FN Thomson Reuters Web of Science™ VR 1.0 PT J AU GANAPOL, BD KORNREICH, DE DAHL, JA NIGG, DW JAHSHAN, SN WEMPLE, CA AF GANAPOL, BD KORNREICH, DE DAHL, JA NIGG, DW JAHSHAN, SN WEMPLE, CA TI THE SEARCHLIGHT PROBLEM FOR NEUTRONS IN A SEMIINFINITE MEDIUM SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article ID RADIATIVE-TRANSFER AB The solution to the searchlight problem for monoenergetic neutrons in a semi-infinite medium with isotropic scattering illuminated at the free surface is obtained through the numerical evaluation of an analytical expression for the scalar flux at various positions within the medium. The sources considered are normally incident pencil beam and isotropic point sources as well as a longitudinal uniformly distributed source. The analytic solution is effected by a recently developed numerical inversion technique applied to the Fourier-Bessel transform. The transform inversion results from the solution method of Rybicki, where the two-dimensional problem is solved by casting it as a variant of a one-dimensional problem. The numerical inversion results in a highly accurate solution. Comparisons of the analytic solution with results from Monte Carlo (MCNP) and discrete ordinates transport codes (DORT, TWODANT, and SMARTEPANTS) show excellent agreement. These comparisons, which are free from any associated data or cross-section set dependencies, provide significant evidence of the proper operation of the transport codes tested. C1 EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. RP GANAPOL, BD (reprint author), UNIV ARIZONA,DEPT NUCL & ENERGY ENGN,TUCSON,AZ 85721, USA. NR 12 TC 20 Z9 20 U1 0 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD SEP PY 1994 VL 118 IS 1 BP 38 EP 53 PG 16 WC Nuclear Science & Technology SC Nuclear Science & Technology GA PD419 UT WOS:A1994PD41900003 ER PT J AU SMOLEN, GR BIERMAN, SR FUKUMURA, N AF SMOLEN, GR BIERMAN, SR FUKUMURA, N TI CRITICALITY DATA AND VALIDATION STUDIES OF ARRAYS OF MIXED-OXIDE FUEL-PINS IN AQUEOUS AND ORGANIC SOLUTIONS SO NUCLEAR TECHNOLOGY LA English DT Article DE CRITICALITY EXPERIMENT; VALIDATION; HETEROGENEOUS AB Critical experiments were conducted with organic- and water-moderated arrays of mixed plutonium and uranium oxide fuel pins. The organic solution consisted of 32 vol% tributyl phosphate and 68 vol% normal paraffin hydrocarbon. The square lattice pitches ranged from 0.761 to 1.935 cm. A direct comparison between the reactivity of the two systems was not possible, because most of the experiments conducted with water were performed approximately 7 yr before the organic solution experiments. At the two lattice pitches where a direct comparison could be made, based on the number of fuel pins required for criticality, it was determined that the reactivity of the water-moderated system was the same or slightly higher than the organic-moderated system. These data were used in calculational studies performed independently al the Oak Ridge National Laboratory (ORNL) and the Power Reactor and Nuclear Fuel Development Corporation of Japan (PNC) with the KENO-IV computer code. A 27-energy-group cross-section library derived from the Evaluated Nuclear Data File B- Version IV (ENDF/B-IV) was used in both studies. The results of these analyses are in good agreement with the experimental results with calculated k(eff)'s ranging from 0. 991 to 1.014. The average calculated k(eff)'s based on the ORNL and PNC analyses were 1.001 and 1.004, respectively. No trends in calculated k(eff) with any parameters were identified. C1 OAK RIDGE NATL LAB, DIV COMP & TELECOMMUN, OAK RIDGE, TN 37831 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. POWER REACTOR & NUCL FUEL DEV CORP, DIV EXPTL FAST REACTOR, MINATO KU, TOKYO, JAPAN. NR 9 TC 1 Z9 1 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1994 VL 107 IS 3 BP 285 EP 303 PG 19 WC Nuclear Science & Technology SC Nuclear Science & Technology GA PD519 UT WOS:A1994PD51900005 ER PT J AU SMOLEN, GR LLOYD, RC FUNABASHI, H AF SMOLEN, GR LLOYD, RC FUNABASHI, H TI CRITICALITY DATA AND VALIDATION STUDIES OF PLUTONIUM-URANIUM NITRATE SOLUTIONS IN CYLINDRICAL AND SLAB GEOMETRY SO NUCLEAR TECHNOLOGY LA English DT Article AB A series of critical experiments was performed with mixed plutonium-uranium nitrate solutions in two cylinders and in a variable thickness slab tank. The solution concentrations ranged from 12 to 174 g Pu/l with Pu/Pu + U ratios of 0.5, 0.4, and 0.2. The criticality data were used to validate two versions of the SCALE computer code system (SCALE-4 and SCALE-2). Calculations were performed with the 27-energy-group cross-section library, derived from the Evaluated Nuclear Data File B- Version IV The average calculated k(eff) for all geometries (39 experiments) is 1.006 (sigma = 0. 006), calculated with SCALE-4, and 1.004 (sigma = 0. 007), calculated with SCALE-2. Overall, the range of calculated k(eff) varied from 0. 989 to 1.019. These experiments covered a wide range of parameters, with variations in physical, chemical, and neutronic parameters. C1 OAK RIDGE NATL LAB, DIV COMP & TELECOMMUN, OAK RIDGE, TN 37831 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. POWER REACTOR & NUCL FUEL DEV CORP, RECYCLE EQUIAMENT TEST FACIL, MINATO KU, TOKYO, JAPAN. NR 17 TC 3 Z9 3 U1 1 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1994 VL 107 IS 3 BP 304 EP 325 PG 22 WC Nuclear Science & Technology SC Nuclear Science & Technology GA PD519 UT WOS:A1994PD51900006 ER PT J AU SMOLEN, GR LLOYD, RC KOYAMA, T AF SMOLEN, GR LLOYD, RC KOYAMA, T TI CRITICALITY DATA AND VALIDATION STUDIES OF PLUTONIUM-URANIUM NITRATE SOLUTIONS IN ANNULAR GEOMETRY SO NUCLEAR TECHNOLOGY LA English DT Article DE VALIDATION; ANNULAR CYLINDER; CRITICALITY EXPERIMENT AB Critical experiments were performed at the Pacific North west Laboratory-Critical Mass Laboratory from 1985 to 1987 with mixed Pu + U nitrate solutions in annular geometry. The 25.4-cm-diam central region of the annular vessel contained various inserts, such as a bottle containing fissile solution and borated-concrete and cadmium-covered polyethylene annular inserts. The fissile solution concentrations ranged from 47 to 226 g Pu/l with Pu/Pu + U ratios of 1.0, 0.5, and 0.2. The criticality data were used to validate two versions of the SCALE computer code system (SCALE-4 and SCALE-2). The analyses were performed with the 27-energy-group cross-section library, derived from the Evaluated Nuclear Data File B- Version IV Computer models were prepared to accurately simulate all significant materials that would affect the system reactivity. The average calculated k(eff) for the 18 experiments was 1.008 (sigma = 0.006) with SCALE-4 and 1.004 (sigma = 0.006) with SCALE-2. Overall, the range of calculated k(eff)'s varied from 0.990 to 1.017. The results of the validation calculations indicate that the SCALE computer code system is capable of accurately modeling Pu + U nitrate, solutions in annular geometry. C1 OAK RIDGE NATL LAB, DIV COMP & TELECOMMUN, OAK RIDGE, TN 37831 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. POWER REACTOR & NUCL FUEL DEV CORP, TOKAI WORKS, MINATO KU, TOKYO, JAPAN. NR 11 TC 2 Z9 2 U1 1 U2 1 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1994 VL 107 IS 3 BP 326 EP 339 PG 14 WC Nuclear Science & Technology SC Nuclear Science & Technology GA PD519 UT WOS:A1994PD51900007 ER PT J AU SMOLEN, GR LLOYD, RC MATSUMOTO, T AF SMOLEN, GR LLOYD, RC MATSUMOTO, T TI CRITICALITY DATA AND VALIDATION STUDIES OF MIXED-OXIDE FUEL PIN ARRAYS IN PU+U+GD NITRATE SO NUCLEAR TECHNOLOGY LA English DT Article DE CRITICALITY EXPERIMENT; VALIDATION; DISSOLVER AB Critical experiments were performed at the Pacific Northwest Laboratory's Critical Mass Laboratory in 1987 and 1988 with a heterogeneous array of mixed-oxide (MOX) fuel pins immersed in mixed plutonium-uranium nitrate solutions. The 996 fuel pins, on a 1. 40-cm-square pitch, were configured in a cylindrical array. The solution heavy metal concentrations ranged from 4 to 468 g/l and had a Pu /Pu + U ratio of 0.2. Critical experiments were also performed with gadolinium added to the fissile solution. These experiments were designed to simulate conditions in a MOX fuel dissolver, where fuel lumps are moderated by aqueous solutions containing fissile nuclides, with and without a soluble neutron poison. For the experimental conditions examined, it was determined that the critical size of the system increased as the heavy metal concentration increased. The criticality data were used to validate two versions of the SCALE computer code system and the 27-energy-group cross-section library, derived from the Evaluated Nuclear Data File B Version IV The calculational results indicate that SCALE-2 has some difficulty in modeling these systems. Modifications in SCALE-4 have led to more accurate k(eff) results. C1 OAK RIDGE NATL LAB, DIV COMP & TELECOMMUN, OAK RIDGE, TN 37831 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. POWER REACTOR & UCL FUEL DEV CORP, TOKAI WORKS, MINATO KU, TOKYO, JAPAN. NR 14 TC 2 Z9 2 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5450 J9 NUCL TECHNOL JI Nucl. Technol. PD SEP PY 1994 VL 107 IS 3 BP 340 EP 355 PG 16 WC Nuclear Science & Technology SC Nuclear Science & Technology GA PD519 UT WOS:A1994PD51900008 ER PT J AU MAIDAK, BL LARSEN, N MCCAUGHEY, MJ OVERBEEK, R OLSEN, GJ FOGEL, K BLANDY, J WOESE, CR AF MAIDAK, BL LARSEN, N MCCAUGHEY, MJ OVERBEEK, R OLSEN, GJ FOGEL, K BLANDY, J WOESE, CR TI THE RIBOSOMAL DATABASE PROJECT SO NUCLEIC ACIDS RESEARCH LA English DT Article AB The Ribosomal Database Project (RDP) is a curated database that offers ribosome-related data, analysis services, and associated computer programs. The offerings include phylogenetically ordered alignments of ribosomal RNA (rRNA) sequences, derived phylogenetic trees, rRNA secondary structure diagrams, and various software for handling, analyzing and displaying alignments and trees. The data are available via anonymous ftp (rdp.life.uiuc.edu), electronic mail (server@rdp.life.uiuc.edu) and gopher (rdpgopher.life.uiuc.edu). The electronic mail server also provides ribosomal probe checking, approximate phylogenetic placement of user-submitted sequences, screening for chimeric nature of newly sequenced rRNAs, and automated alignment. C1 ARGONNE NATL LAB,DIV MATH & COMP SCI,ARGONNE,IL 60439. INDIANA UNIV,DEPT BIOL,BLOOMINGTON,IN 47405. RP MAIDAK, BL (reprint author), UNIV ILLINOIS,DEPT MICROBIOL,131 BURRILL HALL,407 S GOODWIN AVE,URBANA,IL 61801, USA. NR 6 TC 600 Z9 606 U1 2 U2 9 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0305-1048 J9 NUCLEIC ACIDS RES JI Nucleic Acids Res. PD SEP PY 1994 VL 22 IS 17 BP 3485 EP 3487 DI 10.1093/nar/22.17.3485 PG 3 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PJ873 UT WOS:A1994PJ87300011 PM 7524021 ER PT J AU JOHNSON, RW MCHUGH, PR KNOLL, DA AF JOHNSON, RW MCHUGH, PR KNOLL, DA TI DEFECT CORRECTION WITH A FULLY COUPLED INEXACT NEWTON METHOD SO NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS LA English DT Article ID NAVIER-STOKES EQUATIONS; FINITE-DIFFERENCE; QUICK SCHEME; ALGORITHM AB We examine the characteristics of a fully coupled inexact Newton method using defect correction to obtain high-order solutions for two problems: natural convection in a square cavity and mired-convection flow over a backward step. Newton's method produces a linearized system with a Jacobian matrix and a residual vector, each of which can be formed using different discrete operators. Solution accuracy depends on the discretization used for the residuals. Defect correction employs low-order operators for the Jacobian bat high-order operators for the residuals. We employ an O(h(3)) convection operator in the residual vector and upwinding in the Jacobian. We find that defect correction is an efficient and effective way to achieve high-order solutions. RP JOHNSON, RW (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 22 TC 4 Z9 4 U1 0 U2 0 PU HEMISPHERE PUBL CORP PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 1040-7790 J9 NUMER HEAT TR B-FUND JI Numer Heat Tranf. B-Fundam. PD SEP PY 1994 VL 26 IS 2 BP 173 EP 188 DI 10.1080/10407799408914924 PG 16 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA PG382 UT WOS:A1994PG38200004 ER PT J AU Joubert, W AF Joubert, Wayne TI On the Convergence Behavior of the Restarted GMRES Algorithm for Solving Nonsymmetric Linear Systems SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS LA English DT Article DE Nonsymmetric linear systems; Conjugate gradient type iterative methods; GMRES; Restarting AB The solution of nonsymmetric systems of linear equations continues to be a difficult problem. A main algorithm for solving nonsymmetric problems is restarted GMRES. The algorithm is based on restarting full GMRES every s iterations, for some integer s > 0. This paper considers the impact of the restart frequency s on the convergence and work requirements of the method. It is shown that a good choice of this parameter can lead to reduced solution time, while an improper choice may hinder or preclude convergence. An adaptive procedure is also presented for determining automatically when to restart. The results of numerical experiments are presented. C1 Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Joubert, W (reprint author), Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. FU National Science Foundation [DCR-8518722]; Department of Energy [DE-FG05-87ER25048, W-7405-ENG-36]; Cray Research Inc. [LTRDTD 1/18/90]; University of Texas at Austin; Los Alamos National Laboratory FX This work was supported in part by the National Science Foundation through Grant DCR-8518722, by the Department of Energy through Grant DE-FG05-87ER25048, and by Cray Research Inc. through Grant LTRDTD 1/18/90, with the University of Texas at Austin. This work was also supported in part by the Department of Energy through grant W-7405-ENG-36, with Los Alamos National Laboratory. NR 29 TC 29 Z9 29 U1 0 U2 0 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1070-5325 EI 1099-1506 J9 NUMER LINEAR ALGEBR JI Numer. Linear Algebr. Appl. PD SEP-OCT PY 1994 VL 1 IS 5 BP 427 EP 447 DI 10.1002/nla.1680010502 PG 21 WC Mathematics, Applied; Mathematics SC Mathematics GA V32QC UT WOS:000208964700001 ER PT J AU Cai, XC Gropp, WD Keyes, DE AF Cai, Xiao-Chuan Gropp, William D. Keyes, David E. TI A Comparison of Some Domain Decomposition and ILU Preconditioned Iterative Methods for Nonsymmetric Elliptic Problems SO NUMERICAL LINEAR ALGEBRA WITH APPLICATIONS LA English DT Article DE Domain decomposition; Preconditioning; Iterative methods; Nonsymmetric and/or indefinite elliptic problems AB In recent years, competitive domain-decomposed preconditioned iterative techniques of Krylov-Schwarz type have been developed for nonsymmetric linear elliptic systems. Such systems arise when convection-diffusion-reaction problems from computational fluid dynamics or heat and mass transfer are linearized for iterative solution. Through domain decomposition, a large problem is divided into many smaller problems whose requirements for coordination can be controlled to allow effective solution on parallel machines. A central question is how to choose these small problems and how to arrange the order of their solution. Different specifications of decomposition and solution order lead to a plethora of algorithms possessing complementary advantages and disadvantages. In this report we compare several methods, including the additive Schwarz algorithm, the classical multiplicative Schwarz algorithm, an accelerated multiplicative Schwarz algorithm, the tile algorithm, the CGK algorithm, the CSPD algorithm, and also the popular global ILU-family of preconditioners, on some nonsymmetric or indefinite elliptic model problems discretized by finite difference methods. The preconditioned problems are solved by the unrestarted GMRES method. A version of the accelerated multiplicative Schwarz method is a consistently good performer. C1 [Cai, Xiao-Chuan] Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. [Gropp, William D.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Keyes, David E.] Old Dominion Univ, Dept Comp Sci, Norfolk, VA 23529 USA. [Keyes, David E.] NASA Langley Res Ctr, Inst Comp Applicat Sci & Eng, Hampton, VA 23681 USA. RP Cai, XC (reprint author), Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. FU National Science Foundation; Kentucky EPSCoR Program [STI-9108764]; Applied Mathematical Sciences subprogram of the Office of Energy Research, US. Department of Energy [W-31-109-Eng-38]; NSF [ECS-8957475]; National Aeronautics and Space Administration under NASA [NAS1-18605] FX The work of first author was supported in part by the National Science Foundation and the Kentucky EPSCoR Program under grant STI-9108764. The work of second author was supported in part by the Applied Mathematical Sciences subprogram of the Office of Energy Research, US. Department of Energy, under Contract W-31-109-Eng-38. The work of third author was supported in part by the NSF under contract ECS-8957475 and by the National Aeronautics and Space Administration under NASA Contract NAS1-18605 while the author was in residence at the Institute for Computer Applications in Science and Engineering (ICASE), NASA Langley Research Center, Hampton, VA 23665. NR 40 TC 5 Z9 5 U1 0 U2 1 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 1070-5325 EI 1099-1506 J9 NUMER LINEAR ALGEBR JI Numer. Linear Algebr. Appl. PD SEP-OCT PY 1994 VL 1 IS 5 BP 477 EP 504 DI 10.1002/nla.1680010504 PG 28 WC Mathematics, Applied; Mathematics SC Mathematics GA V32QC UT WOS:000208964700003 ER PT J AU ANDREEV, VA LERNER, PB AF ANDREEV, VA LERNER, PB TI PHOTON CLUSTERS AND SUPERSYMMETRY OF MULTIPHOTON TRANSITIONS SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS LA English DT Article ID HAMILTONIANS; STATES AB A new approach to the quantum description of resonance multiphoton processes is suggested. This approach is based on the conditional separation of the degrees of freedom of the photon field into two classes: ''external'' and ''internal''. The equivalence class for the internal degrees of freedom is called ''photon cluster''. Hamiltonians for resonance multiphoton transitions in two-level systems are formulated in terms of photon clusters, rather than in terms of usual single-photon states. The supersymmetry of these Hamiltonians is investigated. C1 LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. RP ANDREEV, VA (reprint author), PN LEBEDEV PHYS SCI INST, DIV OPT, LENINSKY PROSPEKT 53, MOSCOW 117924, RUSSIA. RI Andreev, Vladimir/M-7036-2015; Andreev, Vladimir/B-7861-2017; OI Lerner , Peter/0000-0002-3086-0170 NR 14 TC 1 Z9 1 U1 0 U2 1 PU EDITRICE COMPOSITORI BOLOGNA PI BOLOGNA PA VIA STALINGRADO 97/2, I-40128 BOLOGNA, ITALY SN 1124-1861 J9 NUOVO CIMENTO A JI Nuovo Cimento Soc. Ital. Fis. A-Nucl. Part. Fields PD SEP PY 1994 VL 107 IS 9 BP 1767 EP 1777 DI 10.1007/BF02780709 PG 11 WC Physics, Particles & Fields SC Physics GA PQ041 UT WOS:A1994PQ04100028 ER PT J AU MORENO, JC NILSEN, J DASILVA, LB AF MORENO, JC NILSEN, J DASILVA, LB TI TRAVELING-WAVE EXCITATION AND AMPLIFICATION OF NEON-LIKE GERMANIUM 3P-3S TRANSITIONS SO OPTICS COMMUNICATIONS LA English DT Article ID LASER; EMISSION AB We report on experiments using traveling wave excitation of neon-like germanium to produce amplification of 3p-3s soft X-ray transitions. The laser pulse consisted of three 100 ps Gaussian laser pulses separated by 400 ps. Targets were 3 cm long germanium slabs. Traveling wave excitation was employed by tilting the wave front of the driving laser by 45 degrees to match the propagation speed of the X-ray laser photons along the length of the target. We compare cases with the traveling wave, with no traveling wave, and against the traveling wave. Significant enhancement of the X-ray laser intensities is observed using the traveling wave technique due to the short gain duration of these plasmas. Gain was inferred from line intensity measurements at two lengths. Our results are compared to a numerical model. RP MORENO, JC (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 13 TC 56 Z9 56 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD SEP 1 PY 1994 VL 110 IS 5-6 BP 585 EP 589 DI 10.1016/0030-4018(94)90255-0 PG 5 WC Optics SC Optics GA PE296 UT WOS:A1994PE29600022 ER PT J AU RATOWSKY, RP FLECK, JA FEIT, MD AF RATOWSKY, RP FLECK, JA FEIT, MD TI ACCURATE DESCRIPTION OF ULTRAWIDE-ANGLE BEAM-PROPAGATION IN HOMOGENEOUS MEDIA BY LANCZOS ORTHOGONALIZATION SO OPTICS LETTERS LA English DT Article AB We demonstrate accurate modeling of ultrawide-angle beam propagation in homogeneous media by Lanczos orthogonalization for acceptable longitudinal step sizes. Accuracy is determined by comparison with solutions to the Helmholtz equation obtained by a band-limited Fourier series method. RP RATOWSKY, RP (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI Feit, Michael/A-4480-2009 NR 5 TC 8 Z9 8 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 1 PY 1994 VL 19 IS 17 BP 1284 EP 1286 DI 10.1364/OL.19.001284 PG 3 WC Optics SC Optics GA PD417 UT WOS:A1994PD41700006 PM 19855495 ER PT J AU ENGLAND, AF BURNS, CJ BUCHWALD, SL AF ENGLAND, AF BURNS, CJ BUCHWALD, SL TI NEW SYNTHESES OF (CP-ASTERISK)2TH(PH)2 AND (CP-ASTERISK)2TH(ME)(ARYL) DERIVATIVES SO ORGANOMETALLICS LA English DT Article ID STRUCTURAL DYNAMICS; GRIGNARD-REAGENTS; ALLYLIC AMINES; COMPLEXES; ZIRCONIUM; ALKYL; ORGANOZIRCONIUM; CYCLIZATION; REACTIVITY; CHEMISTRY AB The complex Cp*(2)ThPh(2) (1) is known to be a useful precursor in elimination reactions to yield transient benzyne adduct. This complex may be prepared in improved yield from the reaction of PhMgBr with Cp*2ThCl2 in the presence of p-dioxane. Ortho-substituted precursors Cp*Th-2(Me)(o-MeOC(6)H(4)) (2), Cp*Th-2(Me)(o-MeC(6)H(4)) (3), and Cp*Th-2(Me)(2,5Me(2)C(6)H(3)) (4) are reported for the first time, having been prepared in one-pot procedures using a similar method. The respective intermediate monohalide complexes have also been prepared at room temperature. The tolyl and xylyl derivatives exist as pairs of rotamers in solution, demonstrating the significant steric constraints imposed on this type of complex by ortho substituents. Halide exchange is observed in the preparation of the aryl-halide complexes when arylmagnesium bromides are employed. The extent Of this exchange is influenced by the addition of p-dioxane to reaction mixtures. C1 LOS ALAMOS NATL LAB, INORGAN & STRUCT CHEM GRP, LOS ALAMOS, NM 87545 USA. MIT, DEPT CHEM, CAMBRIDGE, MA 02139 USA. NR 43 TC 14 Z9 14 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0276-7333 EI 1520-6041 J9 ORGANOMETALLICS JI Organometallics PD SEP PY 1994 VL 13 IS 9 BP 3491 EP 3495 DI 10.1021/om00021a023 PG 5 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA PF967 UT WOS:A1994PF96700023 ER PT J AU TAPPIN, DK ROBERTSON, IM KIRK, MA AF TAPPIN, DK ROBERTSON, IM KIRK, MA TI THE ROLE OF ELECTRON-PHONON COUPLING IN THE FORMATION OF CLUSTERED VACANCY DEFECTS IN ELEMENTAL METALS FROM HEAVY-ION IRRADIATION SO PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES LA English DT Article ID ENERGETIC DISPLACEMENT CASCADES; STACKING-FAULT ENERGY; DISLOCATION LOOPS; MELTING TEMPERATURE; COPPER; COLLAPSE; DAMAGE; IRON; DYNAMICS; DENSITY AB The role of electron-phonon coupling in reducing the lifetime of the thermal spike of a collision cascade has been examined by calculating the power absorbed by the electronic system of the lattice and comparing the data with published results for the defect yield in a wide variety of elemental metals. A modified version of TRIM has been used to calculate the cascade energy density for all the irradiation conditions and materials considered. A strong dependence of the efficiency of dislocation loop production (defect yield) on the cascade energy density was determined, and only at constant cascade energy density were variations in the defect yield for different materials compared. Good correlation was found between the strength of electron-phonon coupling and the defect yield data for those materials that exhibit strong electron-phonon coupling. As the strength of this coupling decreased, other factors which influence the molten zone lifetime, such as the melting temperature, were found to become more significant. However, from the data examined, it was not possible to determine which parameters controlled the thermal spike lifetime in those metals for which the power absorbed by the electronic system was negligible; a correlation between a long thermal spike lifetime and low melting temperature was noted. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP TAPPIN, DK (reprint author), UNIV ILLINOIS,DEPT MAT SCI & ENGN,1304 W GREEN ST,URBANA,IL 61801, USA. NR 52 TC 16 Z9 16 U1 1 U2 7 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8610 J9 PHILOS MAG A JI Philos. Mag. A-Phys. Condens. Matter Struct. Defect Mech. Prop. PD SEP PY 1994 VL 70 IS 3 BP 463 EP 479 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA PG035 UT WOS:A1994PG03500005 ER PT J AU UCHIDA, K YU, PY NOTO, N LILIENTALWEBER, Z WEBER, ER AF UCHIDA, K YU, PY NOTO, N LILIENTALWEBER, Z WEBER, ER TI COMPARISON BETWEEN PHOTOLUMINESCENCE AND RAMAN-SCATTERING IN DISORDERED AND ORDERED ALLOYS IN GAINP SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID VAPOR-PHASE EPITAXY; GROWTH TEMPERATURE; BAND-GAP; RESONANT RAMAN; GAAS; GA0.52IN0.48P; IN1-XGAXP AB We have studied the photoluminescence spectra in both ordered and disordered phases of Ga0.5In0.5P alloy as a function of pressure. We found evidence of a pressure-induced conversion of Ga0.5In0.5P from a direct band gap semiconductor to an indirect band gap semiconductor owing to lowering of the X conduction band valleys relative to the minimum at the zone centre. Raman spectra in Ga0.5In0.5P samples doped with Se donors are reported. In ordered Ga0.5In0.5P electronic Raman scattering from single-particle excitations indicates the existence of a high-density electron gas which is absent in a similarly doped disordered sample. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. SHIN ETSU HANDOUTAI CO,ISOBE SEMICOND LAB,ISOBE AN NAKA,GUNMA,JAPAN. RP UCHIDA, K (reprint author), UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720, USA. RI Liliental-Weber, Zuzanna/H-8006-2012 NR 22 TC 15 Z9 15 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1994 VL 70 IS 3 BP 453 EP 466 DI 10.1080/01418639408240220 PG 14 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA PG038 UT WOS:A1994PG03800016 ER PT J AU CHEN, XM QUINN, JJ AF CHEN, XM QUINN, JJ TI MULTI-ANYON IONS AND PHOTOLUMINESCENCE SPECTRUM OF FRACTIONAL QUANTUM HALL SYSTEMS SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID FINITE-SIZE; STATES; EXCITATIONS; HIERARCHY; IMPURITY; FLUID AB Quasiparticles of fractional quantum Hall effect states are anyons carrying fractional charge and obeying fractional statistics. Anyons can interact with charged impurities on or near the plane of the electron layer to form bound states. We study a system consisting of a finite number of electrons confined to a spherical surface interacting with a localized valence-band hole separated from the surface by a distance d. A number of ionic states, consisting of several quasielectrons bound to the localized hole, can be identified from the dependence of the energy spectrum on Landau level filling factor nu(e). The photoluminescence spectrum resulting from electron-hole recombination is studied as a function of separation d and filling factor nu(e) at a finite temperature. The multipeaked structure of the general spectrum supports the hypothesis of stable anyonic ions. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP CHEN, XM (reprint author), UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996, USA. NR 17 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1994 VL 70 IS 3 BP 617 EP 625 DI 10.1080/01418639408240234 PG 9 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA PG038 UT WOS:A1994PG03800030 ER PT J AU COHEN, ML AF COHEN, ML TI SUPERCONDUCTIVITY IN C-60-BASED SOLIDS SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID CARBON NANOTUBES; DOPED C-60; RB3C60; C60; FULLERENES; K3C60; GAP AB Experimental data and theoretical calculations related to C60-based solids are used to interpret some of the electronic and superconducting properties of these materials. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP COHEN, ML (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 38 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1994 VL 70 IS 3 BP 627 EP 636 DI 10.1080/01418639408240235 PG 10 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA PG038 UT WOS:A1994PG03800031 ER PT J AU FUCHS, HD ITOH, KM HALLER, EE AF FUCHS, HD ITOH, KM HALLER, EE TI ISOTOPICALLY CONTROLLED GERMANIUM - A NEW MEDIUM FOR THE STUDY OF CARRIER SCATTERING BY NEUTRAL IMPURITIES SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID NATURAL GE CRYSTALS; INDIRECT ENERGY-GAP; ISOTOPE DEPENDENCE; LATTICE-DYNAMICS; C-13 DIAMOND; DISORDER; PHONONS; SEMICONDUCTORS; ABSORPTION; SPECTRA AB The Hall mobility of carriers in isotopically pure Ge crystals, doped by neutron transmutation, has been measured over a wide temperature range. Our experimental data allow quantitative comparison with theory. We find that at temperatures below 20 K the mobility is limited by neutral impurity scattering and it can be quantitatively described by the theory of McGill and Baron. C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP FUCHS, HD (reprint author), UNIV CALIF BERKELEY,BERKELEY,CA 94720, USA. RI Itoh, Kohei/C-5738-2014 NR 56 TC 6 Z9 6 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD SEP PY 1994 VL 70 IS 3 BP 661 EP 670 DI 10.1080/01418639408240240 PG 10 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA PG038 UT WOS:A1994PG03800036 ER PT J AU FRANK, HA CUA, A CHYNWAT, V YOUNG, A GOSZTOLA, D WASIELEWSKI, MR AF FRANK, HA CUA, A CHYNWAT, V YOUNG, A GOSZTOLA, D WASIELEWSKI, MR TI PHOTOPHYSICS OF THE CAROTENOIDS ASSOCIATED WITH THE XANTHOPHYLL CYCLE IN PHOTOSYNTHESIS SO PHOTOSYNTHESIS RESEARCH LA English DT Article DE ANTHERAXANTHIN; EXCITED STATE; FEMTOSECOND; SPECTROSCOPY; VIOLAXANTIN; ZEAXANTHIN ID LIGHT-HARVESTING FUNCTION; LONG POLYENES; BETA-CAROTENE; SINGLET-STATE; ZEAXANTHIN; COMPLEX; MEMBRANES; PLANTS AB Green plants use the xanthophyll cycle to regulate the flow of energy to chlorophyll a within photosynthetic proteins. Under conditions of low light intensity violaxanthin, a carotenoid possessing nine conjugated double bonds, functions as an antenna pigment by transferring energy from its lowest excited singlet state to that of chlorophyll a within light-harvesting proteins. When the light intensity increases, violaxanthin is biochemically transformed into zeaxanthin, a carotenoid that possesses eleven conjugated double bonds. The results presented here show that extension of the pi conjugation of the polyene lowers the energy of the lowest excited singlet state of the carotenoid below that of chlorophyll a. As a consequence zeaxanthin can act as a trap for the excess excitation energy on chlorophyll a pigments within the protein, thus regulating the flow of energy within photosynthetic light-harvesting proteins. C1 LIVERPOOL JOHN MOORES UNIV, SCH BIOL & EARTH SCI, LIVERPOOL L3 3AF, MERSEYSIDE, ENGLAND. ARGONNE NATL LAB, DIV CHEM, ARGONNE, IL 60439 USA. RP FRANK, HA (reprint author), UNIV CONNECTICUT, DEPT CHEM, U-60, STORRS, CT 06269 USA. RI Gosztola, David/D-9320-2011; OI Gosztola, David/0000-0003-2674-1379; Young, Andrew/0000-0001-6251-0944 NR 20 TC 299 Z9 306 U1 3 U2 35 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0166-8595 EI 1573-5079 J9 PHOTOSYNTH RES JI Photosynth. Res. PD SEP PY 1994 VL 41 IS 3 BP 389 EP 395 DI 10.1007/BF02183041 PG 7 WC Plant Sciences SC Plant Sciences GA PQ467 UT WOS:A1994PQ46700003 PM 24310153 ER PT J AU MOODENBAUGH, AR FISCHER, DA AF MOODENBAUGH, AR FISCHER, DA TI HOLE STATE DENSITY AND SUPERCONDUCTIVITY IN OXYGEN-DEFICIENT LA2-XSRXCUO4-Y AND YBA2CU3O7-DELTA SO PHYSICA C LA English DT Article ID X-RAY ABSORPTION; TC; SPECTROSCOPY AB Oxygen K near-edge spectra measured by fluorescence yield were obtained for fully oxidized and oxygen-deficient YBa2Cu3O7-delta (1:2:3) and La2-xSrxCuO4-y (2:1:4). Two features occur just above the Fermi level, one near 530 eV (hybridized d states) and the other near 528 eV (oxygen 2p holes). For 1:2:3 the oxygen dependence of energy and intensity of the two peaks is determined. The oxygen hole peak intensity has a constant non-zero value for 6.27 less than or equal to (7-delta) less than or equal to 6.40 where the superconducting transition temperature T-c is below 5 K, then rises (as does T-c) as the oxygen content increases toward 7. These results are correlated with earlier Cu K edge measurements which determined the Cu1+ content of similar samples. These quantitative bulk results can also be used as a calibration for estimating the local oxygen content of the microstructure (e.g., grain boundaries) using electron energy loss spectroscopy. We also report oxygen K edge measurements of standard and oxygen-reduced 2:1:4 well into the ''overdoped'' region (0.35 less than or equal to x less than or equal to 0.60), and compare these results with those for 1:2:3. C1 NIST,MAT SCI & ENGN LAB,GAITHERSBURG,MD 20899. RP MOODENBAUGH, AR (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. OI Moodenbaugh, Arnold/0000-0002-3415-6762 NR 19 TC 7 Z9 7 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 SEP 1 PY 1994 VL 230 IS 1-2 BP 177 EP 183 DI 10.1016/0921-4534(94)90461-8 PG 7 WC Physics, Applied SC Physics GA PE884 UT WOS:A1994PE88400022 ER PT J AU BURMESTER, CP WILLE, LT GRONSKY, R AF BURMESTER, CP WILLE, LT GRONSKY, R TI MICROSCOPIC MODEL AND COMPUTER-SIMULATION OF DETWINNING IN YBA2CU3OZ SO PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS LA English DT Article ID LOW-TEMPERATURE BEHAVIOR; LATTICE-GAS MODEL; A-B ANISOTROPY; SINGLE-CRYSTALS; UNTWINNED YBA2CU3O7-DELTA; PHASE-DIAGRAM; MONTE-CARLO; STATE; STRESS; ORDER AB The results of Monte Carlo simulations of the detwinning of the high-temperature superconductor YBa2Cu3Oz are reported, To study the effects of detwinning and the concomitant domain growth in this system, a sample is first produced having a representative domain structure using a Monte Carlo simulation at fixed temperature and oxygen chemical potential based on an asymmetric two-dimensional Ising model. The resulting microstructures typically consist of finely textured orthogonal domains indicative of a twinned structure. Next, a symmetry-breaking detwinning potential is imposed and the time evolution of the system is followed. At low temperatures or detwinning potentials only partial detwinning is typically achieved as the system is often frozen in ''glassy'' domain structures, but at higher temperatures or detwinning potentials complete detwinning is attained. Domain kinetics is mapped out as a function of oxygen chemical potential and temperature and evidence is presented for an algebraic domain growth law of the form t(n) with n between 0.33 and 0.75 depending on the control parameters. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV MAT SCI, BERKELEY, CA 94720 USA. FLORIDA ATLANTIC UNIV, DEPT PHYS, BOCA RATON, FL 33431 USA. RP BURMESTER, CP (reprint author), UNIV CALIF BERKELEY, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA. NR 55 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 EI 1873-2143 J9 PHYSICA C JI Physica C PD SEP 1 PY 1994 VL 230 IS 1-2 BP 16 EP 30 DI 10.1016/0921-4534(94)90442-1 PG 15 WC Physics, Applied SC Physics GA PE884 UT WOS:A1994PE88400003 ER PT J AU NILSEN, J BEIERSDORFER, P ELLIOTT, SR PHILLIPS, TW BRYUNETKIN, BA DYAKIN, VM PIKUZ, TA FAENOV, AY PIKUZ, SA VONGOELER, S BITTER, M LOBODA, PA LYKOV, VA POLITOV, VY AF NILSEN, J BEIERSDORFER, P ELLIOTT, SR PHILLIPS, TW BRYUNETKIN, BA DYAKIN, VM PIKUZ, TA FAENOV, AY PIKUZ, SA VONGOELER, S BITTER, M LOBODA, PA LYKOV, VA POLITOV, VY TI MEASUREMENT OF THE LY-ALPHA MG RESONANCE WITH THE 2S-]3P NE-LIKE GE LINE SO PHYSICAL REVIEW A LA English DT Article ID X-RAY LASER; HIGHLY CHARGED IONS; NICKEL-LIKE IONS; 2-3 TRANSITIONS; SPECTROSCOPY; PLASMAS; ATOMS; INJECTION; OVERLAP; SPECTRA AB Measurements and calculations of the resonance between the Ly-alpha line of magnesium and the 2s --> 3p transition in neonlike germanium are presented. This resonance is of possible use as part of a resonantly photo-pumped x-ray laser scheme recently proposed which would lase on several 2p --> 2s transition between 64 and 89 angstrom in neonlike germanium. Measurements of the resonance are made by three different approaches: one using the electron beam ion trap, the second using laser-produced plasma, and the third on a tokamak. These results are compared with calculations and other measurements. Certain discrepancies are observed with previous measurements which may be due to the partial overlap between oxygenlike and neonlike lines in germanium. The results do show a good resonance between magnesium and germanium, with the germanium line between the two Ly-alpha components of magnesium but nearer to the short-wavelength component. C1 NATL SCI RES INST PHYS TECH RADIOTECH MEASUREMENTS, 141570 MOSCOW, RUSSIA. RUSSIAN ACAD SCI, PN LEBEDEV PHYS INST, MOSCOW 117924, RUSSIA. PRINCETON PLASMA PHYS LAB, PRINCETON, NJ 08543 USA. NATL INST TECH PHYS, CHELYABINSK 454070, RUSSIA. RP LAWRENCE LIVERMORE NATL LAB, L-59, LIVERMORE, CA 94550 USA. RI Pikuz, Sergey/M-8231-2015 NR 36 TC 26 Z9 26 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 SEP PY 1994 VL 50 IS 3 BP 2143 EP 2149 DI 10.1103/PhysRevA.50.2143 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900024 ER PT J AU LUPTON, JH DIETRICH, DD HAILEY, CJ STEWART, RE ZIOCK, KP AF LUPTON, JH DIETRICH, DD HAILEY, CJ STEWART, RE ZIOCK, KP TI MEASUREMENTS OF THE GROUND-STATE LAMB SHIFT AND ELECTRON-CORRELATION EFFECTS IN HYDROGENLIKE AND HELIUM-LIKE URANIUM SO PHYSICAL REVIEW A LA English DT Article ID X-RAY SPECTROMETER; COLLISIONS; ASTRONOMY; ATOMS; U89+ AB We report measurements of transition energies for highly ionized uranium. For hydrogenic uranium we have measured 102 130+/-92 eV for the 2p3/2-1s1/2 transition. This measurement is sensitive to the 1s Lamb shift, probing the electron self-energy in high-field QED. In addition, we have measured the (1s2p)1P1, 3P2-(1s2)1S0 transition in heliumlike uranium as 100 598+/-111 eV, probing relativistic electron-electron correlation effects. Both measurements were obtained with a Doppler spectrometer, a proven technique which we have adapted to the field of high-Z precision atomic transition-energy measurements. These measurements demonstrate the potential of this technique to attain approximately 1 eV uncertainties. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP LUPTON, JH (reprint author), UNIV MICHIGAN,ANN ARBOR,MI 48109, USA. NR 22 TC 25 Z9 25 U1 2 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 SEP PY 1994 VL 50 IS 3 BP 2150 EP 2154 DI 10.1103/PhysRevA.50.2150 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900025 ER PT J AU CHENG, S BERRY, HG DUNFORD, RW GEMMELL, DS KANTER, EP KURTZ, C REHM, KE ZABRANSKY, BJ AF CHENG, S BERRY, HG DUNFORD, RW GEMMELL, DS KANTER, EP KURTZ, C REHM, KE ZABRANSKY, BJ TI MEASUREMENT OF THE LIFETIME OF THE 2P-3(2) STATE IN HELIUM-LIKE KRYPTON USING A 2-FOIL TARGET SO PHYSICAL REVIEW A LA English DT Article ID FORBIDDEN TRANSITIONS; IONS; ATOMS; 23S1 AB The lifetime of the 2(3)P2 level in heliumlike krypton has been measured by an alternative method involving the use of a two-foil target. The experiment demonstrates the potential of this method which allows the standard beam-foil time-of-flight technique to be extended to shorter lifetimes. We measured a lifetime of 9.5+/-0.9 ps, which is in reasonable agreement with current theoretical calculations. C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RI Kurtz, Chalres/G-1037-2011 OI Kurtz, Chalres/0000-0003-2606-0864 NR 29 TC 16 Z9 16 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 SEP PY 1994 VL 50 IS 3 BP 2197 EP 2201 DI 10.1103/PhysRevA.50.2197 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900031 ER PT J AU FOURNIER, KB GOLDSTEIN, WH OSTERHELD, A FINKENTHAL, M LIPPMANN, S HUANG, LK MOOS, HW SPECTOR, N AF FOURNIER, KB GOLDSTEIN, WH OSTERHELD, A FINKENTHAL, M LIPPMANN, S HUANG, LK MOOS, HW SPECTOR, N TI SOFT-X-RAY EMISSION OF GALLIUM-LIKE RARE-EARTH ATOMS PRODUCED BY HIGH-TEMPERATURE LOW-DENSITY TOKAMAK AND HIGH-DENSITY LASER PLASMAS SO PHYSICAL REVIEW A LA English DT Article ID ISOELECTRONIC SEQUENCE; GROUND-STATE; I-LIKE; IONS; GA; ZN; TRANSITIONS; INTERVALS; TRANSPORT; SPECTRUM AB Spectra of rare-earth atoms praseodymium, Z=59, to ytterbium, Z=70, emitted from the high-temperature (1 keV) low-density (10(13) cm-3) laser TEXT tokamak (at the Fusion Research Center, University of Texas, Austin) and high-density (10(20) cm-3) laser plasmas have been recorded in the soft-x-ray range of 50-200 angstrom with an image intensifier detector and on photographic plates. The brightest n = 4 to n = 4 transitions of galliumlike ions have been identified and their emission patterns have been studied by comparison with ab initio atomic structure calculations and collisional radiative models under the respective plasma conditions. We have investigated the use of the ratios of the intensities of 4-4 transitions as indicators of plasma densities. This is possible owing to the doublet structure of the galliumlike ground state, which leads to a strong density dependence for ratios of transitions between low-lying levels. We have also used semiempirical ionization balance calculations to characterize the charge state distribution of the tokamak plasmas, in preparation for an investigation of the use of ratios of galliumlike to zinclike and copperlike emission features as indicators of whether the impurities are in coronal equilibrium or undergoing ionization. C1 JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218. SOREQ NUCL RES CTR,IL-70600 YAVNE,ISRAEL. RP FOURNIER, KB (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 28 TC 12 Z9 12 U1 2 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 SEP PY 1994 VL 50 IS 3 BP 2248 EP 2256 DI 10.1103/PhysRevA.50.2248 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900036 ER PT J AU CHEN, MH REED, KJ AF CHEN, MH REED, KJ TI RELATIVISTIC EFFECTS ON ANGULAR-DISTRIBUTION OF AUGER ELECTRONS EMITTED FROM BE-LIKE IONS FOLLOWING ELECTRON-IMPACT EXCITATION SO PHYSICAL REVIEW A LA English DT Article ID HIGHLY CHARGED IONS; HE-LIKE; X-RAYS; POLARIZATION; SHELL; ANISOTROPY; IONIZATION; DECAY; ATOMS; KR AB We have calculated the angular distribution functions for Auger electrons emitted from Be-like Mg, Fe, and Mo following 1s-2p excitation by electron impact. The calculations were carried out in intermediate coupling with configuration interaction using the relativistic distorted-wave and multiconfiguration Dirac-Fock methods. We found strong angular asymmetry for many transitions. We also found that relativistic effects can completely change the characteristics of the angular distribution for transitions which have many contributing partial waves, even for ions as light as Fe. RP CHEN, MH (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550, USA. NR 20 TC 3 Z9 3 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 SEP PY 1994 VL 50 IS 3 BP 2279 EP 2283 DI 10.1103/PhysRevA.50.2279 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900041 ER PT J AU KIMURA, M SATO, H HINO, K MATSUZAWA, M AF KIMURA, M SATO, H HINO, K MATSUZAWA, M TI ELECTRON-ENERGY SPECTRA OF H- DOUBLY-EXCITED STATES RESULTING FROM COLLISIONS OF H- WITH HE SO PHYSICAL REVIEW A LA English DT Article ID NEGATIVE-ION COLLISIONS; HYPERSPHERICAL APPROACH; DETACHMENT; IMPACT; RESONANCES; EXCITATION; SYSTEM AB Electron-energy spectra for H- doubly excited states resulting from collisions of H- with He are rigorously calculated within a semiclassical molecular representation by including couplings between doubly excited states and continuum states and their interference with direct-detachment processes. An energy sampling procedure, based on the Gauss quadratures, is used to discretize continuum states. The present theoretical result clarifies mechanisms of excitation to doubly excited states, quantitatively reproduces the experimental spectra first observed by Risley and Geballe in 1974, separates the contributions from each of three doubly excited states, and identifies the cause of the interference between channels arising from double-electron excitation and direct detachment with simultaneous excitation. C1 RICE UNIV,DEPT PHYS,HOUSTON,TX 77251. UNIV ELECTROCOMMUN,DEPT APPL PHYS & CHEM,CHOFU,TOKYO 182,JAPAN. RP KIMURA, M (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 24 TC 2 Z9 2 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 SEP PY 1994 VL 50 IS 3 BP 2309 EP 2312 DI 10.1103/PhysRevA.50.2309 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900046 ER PT J AU VANE, CR DATZ, S DITTNER, PF KRAUSE, HF SCHUCH, R GAO, H HUTTON, R AF VANE, CR DATZ, S DITTNER, PF KRAUSE, HF SCHUCH, R GAO, H HUTTON, R TI ELECTRON-POSITRON PAIR PRODUCTION IN COULOMB COLLISIONS BY 6.4-TEV SULFUR IONS SO PHYSICAL REVIEW A LA English DT Article ID RELATIVISTIC HEAVY-IONS; DILEPTON EMISSION; CROSS-SECTION; FIXED TARGETS; FIELDS AB Angular and momentum distributions have been measured for electron-positron pairs created in peripheral collisions of 6.4-TeV bare sulfur ions with thin targets of Al, Pd, and Au. Singly and doubly differential cross sections are presented for 1-17 MeV/c electrons and positrons detected independently and in coincidence as pairs. Integrated yields for pair production are found to vary as the square of the target nuclear charge. Relative angular and momentum differential cross sections are effectively target independent. Various physical parameters are deduced from the coincident electron and positron data, including probability distributions for the pair transverse momentum, the pair total energy, and the positron fraction of the pair energy. Where possible, results of these measurements are compared with theory. C1 STOCKHOLM UNIV,S-10405 STOCKHOLM 50,SWEDEN. LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN. RP VANE, CR (reprint author), OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831, USA. NR 50 TC 30 Z9 30 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1994 VL 50 IS 3 BP 2313 EP 2321 DI 10.1103/PhysRevA.50.2313 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900047 ER PT J AU SCHULTZ, DR REINHOLD, CO AF SCHULTZ, DR REINHOLD, CO TI THEORETICAL DESCRIPTION OF THE EJECTED-ELECTRON SPECTRUM IN COLLISIONS OF 1.5-MEV/U F9+ WITH HELIUM SO PHYSICAL REVIEW A LA English DT Article ID ION-ATOM COLLISIONS; CROSS-SECTIONS; INTERMEDIATE ENERGIES; ANGULAR-DISTRIBUTION; IMPACT-IONIZATION; CHARGE-TRANSFER; HE TARGETS; + HE; HYDROGEN; EMISSION AB We present the results of an extensive classical trajectory Monte Carlo simulation of the ejected electron spectrum in collisions of 1.5-MeV/u F9+ with helium. Excellent agreement is found with the measurements of Lee et al. [Phys. Rev. A 41, 4816 (1990)] for ejection to 0-degree. In particular, the simulation reproduces extremely well the shape and magnitude of the electron-capture-to-the-continuum and binary peaks. We contrast this agreement with calculations utilizing various quantum-mechanical perturbation theories. Also, a continuum-distorted-wave-eikonal-initial-state approach, which describes the interaction between the outgoing electron and the residual target ion through a model potential, has been utilized. This approach is shown to be an improvement over conventional calculations based on the use of effective charges. We draw conclusions regarding the proper representation of the collision dynamics leading to electron ejection in the low-energy, electron-capture-to-the-continuum, and binary peak regimes. Calculations of the doubly differential ionization cross section for non-0-degree ejection are displayed as well. C1 UNIV TENNESSEE,KNOXVILLE,TN 37996. RP SCHULTZ, DR (reprint author), OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831, USA. OI Reinhold, Carlos/0000-0003-0100-4962 NR 35 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 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1994 VL 50 IS 3 BP 2390 EP 2396 DI 10.1103/PhysRevA.50.2390 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900055 ER PT J AU POELKER, M COULTER, KP HOLT, RJ JONES, CE KOWALCZYK, RS YOUNG, L ZEIDMAN, B TOPORKOV, DK AF POELKER, M COULTER, KP HOLT, RJ JONES, CE KOWALCZYK, RS YOUNG, L ZEIDMAN, B TOPORKOV, DK TI HIGH-DENSITY PRODUCTION OF SPIN-POLARIZED ATOMIC-HYDROGEN AND DEUTERIUM SO PHYSICAL REVIEW A LA English DT Article ID ALKALI-METAL VAPOR; ELASTIC-SCATTERING; EXCHANGE COLLISIONS; ELECTRON-CAPTURE; ANALYZING POWER; TARGETS; CONSEQUENCES; SYSTEMS; FIELD AB The electron polarization of hydrogen (H) and deuterium (D) atoms in a spin-exchange optical-pumping apparatus has been measured as a function of H (D) density and magnetic-field strength. The atomic density was varied between 4 x 10(13) and 2.6 x 10(14) atoms/cm3 and the magnetic-field strength from 120 to 400 mT. The results suggest that the atoms approach spin-temperature equilibrium even though the magnetic fields are large compared to the critical fields of the atoms. C1 BUDKER INST NUCL PHYS,630090 NOVOSIBIRSK,RUSSIA. RP POELKER, M (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. RI Holt, Roy/E-5803-2011 NR 35 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 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1994 VL 50 IS 3 BP 2450 EP 2458 DI 10.1103/PhysRevA.50.2450 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900064 ER PT J AU RAFAC, RJ TANNER, CE LIVINGSTON, AE KUKLA, KW BERRY, HG KURTZ, CA AF RAFAC, RJ TANNER, CE LIVINGSTON, AE KUKLA, KW BERRY, HG KURTZ, CA TI PRECISION LIFETIME MEASUREMENTS OF THE 6PP-2(1/2,3/2) STATES IN ATOMIC CESIUM SO PHYSICAL REVIEW A LA English DT Note AB We report measurements of the 6p 2P1/2 and 6p 2P3/2 state lifetimes in the Cs-133 atom with precisions of 0.23% and 0.27%, respectively. The results are important to the interpretation of the next generation of parity nonconservation experiments in atomic cesium. A diode laser was used to selectively excite a fast beam of neutral cesium atoms. The decay in flight of the fluorescence was observed with photon-counting detectors. The lifetime results are 34.934+/-0.094 ns for the 6p 2P1/2 state and 30.499 +/- 0.070 ns for the 6p 2P3/2 state. We present comparisons with previous measurements and with relativistic many-body calculations of alkali-metal-atom transition matrix elements. C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RP RAFAC, RJ (reprint author), UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556, USA. NR 18 TC 56 Z9 56 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1994 VL 50 IS 3 BP R1976 EP R1979 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900004 ER PT J AU ZLATEV, I ZHANG, WM FENG, DH AF ZLATEV, I ZHANG, WM FENG, DH TI POSSIBILITY THAT SCHRODINGERS CONJECTURE FOR THE HYDROGEN-ATOM COHERENT STATES IS NOT ATTAINABLE SO PHYSICAL REVIEW A LA English DT Note ID WAVE PACKET; QUANTUM; ORBITS AB We construct the most general SO(4,2) hydrogen-atom coherent states which are the counterpart of Schrodinger's harmonic-oscillator coherent states. We show that these states cannot be localized and cannot follow the classical orbits. Thus, Schrodinger's conjecture for the hydrogen-atom coherent states is unattainable. C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. ACAD SINICA,INST PHYS,TAIPEI 11529,TAIWAN. RP ZLATEV, I (reprint author), DREXEL UNIV,PHILADELPHIA,PA 19104, USA. RI ZHANG, Wei-Min/Q-3713-2016 OI ZHANG, Wei-Min/0000-0003-2117-3608 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 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD SEP PY 1994 VL 50 IS 3 BP R1973 EP R1975 PG 3 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PG809 UT WOS:A1994PG80900003 ER PT J AU SODERLIND, P AHUJA, R ERIKSSON, O WILLS, JM JOHANSSON, B AF SODERLIND, P AHUJA, R ERIKSSON, O WILLS, JM JOHANSSON, B TI CRYSTAL-STRUCTURE AND ELASTIC-CONSTANT ANOMALIES IN THE MAGNETIC 3D TRANSITION-METALS SO PHYSICAL REVIEW B LA English DT Article ID GROUND-STATE PROPERTIES; GENERALIZED GRADIENT APPROXIMATION; ELECTRONIC-STRUCTURE; ORBITAL MAGNETISM; FCC IRON; BCC; SPIN; FE; CO; NI AB Assuming a saturated ferromagnet, the anomalous crystal structures of the magnetic 3d transition elements Fe, Co, and Ni are explained from simple band-filling arguments. The full-potential linear muffin-tin orbital (FP-LMTO) method is used to calculate the elastic constants (C-11, C-12, and C44) for the magnetic and cubic 3d transition metals Cr, Fe, and Ni. For Co calculations of the elastic constants have been performed in the fcc crystal structure (beta-Co). Good agreement with the experimental data is found even for Fe and Co which have anomalous elastic constants. The behavior of the elastic shear constant C' can be understood from the filling of the spin-down 3d band for the ferromagnetic elements. It is shown that C' correlates with the relative crystal stabilities of the bcc and fcc structures for these elements as has earlier been found for the paramagnetic 4d and 5d metals and alloys. C1 LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. RP SODERLIND, P (reprint author), UNIV UPPSALA, DEPT PHYS, CONDENSED MATTER THEORY GRP, BOX 530, S-75105 UPPSALA, SWEDEN. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 45 TC 89 Z9 89 U1 5 U2 24 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 5918 EP 5927 DI 10.1103/PhysRevB.50.5918 PG 10 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500013 ER PT J AU BERGMANN, U SHASTRI, SD SIDDONS, DP BATTERMAN, BW HASTINGS, JB AF BERGMANN, U SHASTRI, SD SIDDONS, DP BATTERMAN, BW HASTINGS, JB TI TEMPERATURE-DEPENDENCE OF NUCLEAR FORWARD SCATTERING OF SYNCHROTRON-RADIATION IN ALPHA-FE-57 SO PHYSICAL REVIEW B LA English DT Article ID IRON AB The resonant forward scattering of synchrotron radiation by Fe-57 nuclei was investigated over the temperature range from 9.7 to 1048 K. The temperature dependence of the Lamb-Mossbauer factor and the internal magnetic field were determined from the observed time spectra. The data presented here demonstrate the suitability of the synchrotron technique for precise measurements of these quantities. In addition these results demonstrate in a straightforward way the difference between the x-ray Debye-Waller factor and the Lamb-Mossbauer factor. C1 BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. CORNELL UNIV,CORNELL HIGH ENERGY SYNCHROTRON SOURCE,ITHACA,NY 14853. CORNELL UNIV,SCH APPL & ENGN PHYS,ITHACA,NY 14853. NR 21 TC 35 Z9 35 U1 1 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 5957 EP 5961 DI 10.1103/PhysRevB.50.5957 PG 5 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500018 ER PT J AU LAVIOLETTE, RA STUMP, DM AF LAVIOLETTE, RA STUMP, DM TI LOCAL STRUCTURAL MOTIFS IN A QUENCHED MODEL MONATOMIC LIQUID SO PHYSICAL REVIEW B LA English DT Article ID ORDER; GLASSES; FRUSTRATION; SOLIDS; FORCES; DENSE AB Amorphous packings have been generated from steepest-descent quenches applied to a monatomic liquid simulated by molecular dynamics. The model for the interatomic forces employed here provides both liquids and solids with a mean coordination as low as seven at low densities as well as the close-packed configurations with a mean coordination of twelve at higher densities. The low-coordination packings generated from the low-density liquid contain microcrystallites with a simple hexagonal structure which, with increasing density, are eventually suppressed in favor of microcrystallites with a body-centered-cubic (bcc) structure. The abrupt growth of the bcc microcrystallites occurs at densities well below the density for the hexagonal-bcc crystal transition at zero temperature and constant volume. The high-coordination packings quenched from the high-density liquid contain truly amorphous clusters which are neither crystalline nor icosahedral, but share attributes of both. The first result shows that microcrystalline clusters can be important structural elements of even simple amorphous substances. The second result resolves the conflicting claims concerning the abundance or scarcity of icosahedra in the densest amorphous substances. Both of these results challenge widely held pictures of simple amorphous substances. RP LAVIOLETTE, RA (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 24 TC 7 Z9 7 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 5988 EP 5998 DI 10.1103/PhysRevB.50.5988 PG 11 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500022 ER PT J AU BALES, GS CHRZAN, DC AF BALES, GS CHRZAN, DC TI DYNAMICS OF IRREVERSIBLE ISLAND GROWTH DURING SUBMONOLAYER EPITAXY SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; SCANNING-TUNNELING-MICROSCOPY; DIFFUSION-LIMITED AGGREGATION; BY-LAYER GROWTH; SURFACE-DIFFUSION; MONTE-CARLO; THIN-FILMS; EQUATION; NUCLEATION; ENERGY AB The nucleation and growth of two-dimensional islands during the submonolayer stage of epitaxial growth is studied with kinetic Monte Carlo simulations and mean-field rate equations. Previous work on irreversible growth is extended to include relaxation of island shapes by edge diffusion. Island morphologies range from ramified structures at low temperatures to compact, polygonal shapes at higher temperatures. Using a self-consistent calculation of the rate coefficients, quantitative agreement is obtained between the solution to coupled, mean-field rate equations and the simulation results for average quantities. The island size distribution function is described by a single universal ''scaling function.'' The average island size is the only important scale for determining island densities. It is shown that the general form of the scaling ansatz applies to wider range of coverages than anticipated previously. This scaling form is combined with the solution to the rate equations to explore explicitly the D/F dependence of the number density of islands (D is the surface diffusion coefficient and F is the deposition flux). RP BALES, GS (reprint author), SANDIA NATL LABS,DEPT COMPUTAT MAT SCI,LIVERMORE,CA 94551, USA. NR 45 TC 352 Z9 355 U1 5 U2 48 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6057 EP 6067 DI 10.1103/PhysRevB.50.6057 PG 11 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500030 ER PT J AU WANG, WZ SAXENA, A BISHOP, AR AF WANG, WZ SAXENA, A BISHOP, AR TI SYSTEMATIC STUDY OF THE VIBRATIONAL PROPERTIES OF POLY(PHENYLENE VINYLENE) AND RELATED OLIGOMERS SO PHYSICAL REVIEW B LA English DT Article ID DETECTED MAGNETIC-RESONANCE; TRANS-STILBENE; POLY(PARA-PHENYLENE VINYLENE); POLYPARAPHENYLENE-VINYLENE; CONJUGATED POLYMERS; OPTICAL-PROPERTIES; CRYSTAL-STRUCTURE; POLYACETYLENE; SPECTRA; POLY(PARAPHENYLENEVINYLENE) AB Within a two-dimensional Su-Schrieffer-Heeger-like Hamiltonian, the electronic and vibrational properties of poly(phenylene vinylene) (PPV) and its model oligomers are investigated systematically. The stable geometric and electronic configurations of this PPV series are determined within the Bogoliubov-de Gennes formalism, with good agreement with the observed variation of the electronic gap with chain length, and the observed spatial extent of the nonlinear excitations (polarons, bipolarons, etc.). The dynamics of lattice relaxation subsequent to electron doping is also analyzed, and suggests relatively weak e-ph coupling in this system. The two-dimensional vibrational spectra of the PPV series have been obtained in the random-phase and frozen-phonon approximations, and certain doping-induced localized modes are identified to be either ir or Raman active. The ir, Raman, and resonant Raman spectra of the pristine and charged PPV series are calculated and compared carefully with corresponding experiments, with overall good agreement. C1 CHINESE ACAD SCI,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA. RP WANG, WZ (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 71 TC 13 Z9 14 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6068 EP 6076 DI 10.1103/PhysRevB.50.6068 PG 9 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500031 ER PT J AU WESTPHAL, C KADUWELA, AP FADLEY, CS VANHOVE, MA AF WESTPHAL, C KADUWELA, AP FADLEY, CS VANHOVE, MA TI PHOTOELECTRON-DIFFRACTION EFFECTS AND CIRCULAR-DICHROISM IN CORE-LEVEL PHOTOEMISSION SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-ABSORPTION; LOCALIZED MAGNETIC SYSTEMS; MULTIPLE-SCATTERING THEORY; ELECTRON-DIFFRACTION; SPIN POLARIZATION; FINE-STRUCTURE; MOLECULES; NICKEL; SURFACES; EDGES AB We have calculated the circular dichroism associated with core-level photoemission using multiple-scattering photoelectron-diffraction theory. For C Is emission in a chiral geometry from CO adsorbed on Pd(111), photoelectron-diffraction calculations predict the dichroism found in experimental results due to Bansmann et al. and also agree well with prior free-molecule calculations by McKoy and Stephens. Backscattering from the Pd substrate is also found to alter the dichroic asymmetries for different adsorption geometries. Analogous calculations for Fe 2p emission from a small Fe cluster also indicate that dichroism due to a chiral geometry can strongly affect measurements of magnetic circular dichroism in systems with net magnetization. With generalization to include spin-orbit and multiplet splittings in the initial state and spin-dependent scattering of the outgoing electrons, photoelectron-diffraction theory thus should provide a general method for modeling dischroism in core-level photoemission from both nonmagnetic and magnetic systems. C1 UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. RP WESTPHAL, C (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. RI Van Hove, Michel/A-9862-2008; OI Van Hove, Michel/0000-0002-8898-6921; Kaduwela, Ajith/0000-0002-7236-2698 NR 48 TC 31 Z9 31 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6203 EP 6208 DI 10.1103/PhysRevB.50.6203 PG 6 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500048 ER PT J AU TRANQUADA, JM KONG, Y LORENZO, JE BUTTREY, DJ RICE, DE SACHAN, V AF TRANQUADA, JM KONG, Y LORENZO, JE BUTTREY, DJ RICE, DE SACHAN, V TI OXYGEN INTERCALATION STAGE ORDERING, AND PHASE-SEPARATION IN LA2NIO4+DELTA WITH 0.05-LESS-THAN-SIMILAR-TO-DELTA-LESS-THAN-SIMILAR-TO-0.11 SO PHYSICAL REVIEW B LA English DT Article ID NEUTRON-DIFFRACTION; ELECTROCHEMICAL OXIDATION; MAGNETIC CORRELATIONS; LA2NIO4.25 LA8NI4O17; LOCAL-STRUCTURE; LA2CUO4+DELTA; SUPERCONDUCTIVITY; CRYSTAL; TRANSITION; TRANSPORT AB We report neutron diffraction studies on a series of La2NiO4+delta single crystals with 0.05 less than or similar to delta less than or similar to 0.11. At 300 K, all of the crystals have an average tetragonal structure (space group I4/mmm). On cooling below 290 K, one or more orthorhombic phases appear, characterized by incommensurate superlattice peaks at (0, k, l +/- DELTA) with k odd, l even, and 1/4 < DELTA less-than-or-equal-to 1/2. The positions, widths, and intensities of the superlattice peaks are quite sensitive to the cooling rate. We show that the incommensurate peaks are evidence of intercalated layers of oxygen spaced periodically along the c axis, with a one-dimensional ordering similar to the staging of intercalates in graphite. The structure of the La2NiO4 lattice between the interstitial layers is of the Bmab-type; the superlattice peaks result from the ordered autiphase domain boundaries induced by the interstitial oxygens, which sit at (1/4, 1/4, 1/4)-type position.. Observed orderings involve interstitial layers separated by two to four Ni-O layers. Peak shapes and positions are modelled quantitatively using the formulas of Hendricks and Teller for one-dimensional disorder in a layer lattice. Besides the one-dimensional ordering of the intercalant layers, temperature-dependent phase separations are observed. Because of the slow ordering kinetics, phase separation can be suppressed by rapid cooling. C1 UNIV DELAWARE,DEPT CHEM ENGN,NEWARK,DE 19716. RP TRANQUADA, JM (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. RI Tranquada, John/A-9832-2009 OI Tranquada, John/0000-0003-4984-8857 NR 47 TC 118 Z9 119 U1 0 U2 12 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6340 EP 6351 DI 10.1103/PhysRevB.50.6340 PG 12 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500064 ER PT J AU GRONBECHJENSEN, N CAI, D BISHOP, AR LAU, AWC LOMDAHL, PS AF GRONBECHJENSEN, N CAI, D BISHOP, AR LAU, AWC LOMDAHL, PS TI BUNCHED FLUXONS IN COUPLED JOSEPHSON-JUNCTIONS SO PHYSICAL REVIEW B LA English DT Article ID SOLITON OSCILLATORS; TUNNEL-JUNCTIONS; HYPERRADIANCE; EXCITATIONS; DYNAMICS; LOCKING; ARRAYS; SYSTEM AB The nature of bunched fluxons on coupled long Josephson junctions is investigated theoretically by means of a coupled set of sine-Gordon equations. For cases of inductive and capacitive coupling between the junctions, we analyze the stability of the bunched states for different velocities and perturbation parameters, damping and bias. The internal oscillation frequency is found for the bunched modes and the origin of the stability is discussed for the different types of bound states. Extensive numerical simulations are carried out in order to validate the analytical results against the dynamical behavior of the full system. Excellent agreement between the analysis and the simulations is obtained for all values of coupling parameters and velocities. Finally, we demonstrate numerically that the stability of the bound states can persist even when the two systems are not exactly identical, and we conclude that both inductive and capacitive coupling can give rise to large-locking regimes in synchronization experiments on coupled Josephson junctions. C1 UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. RP GRONBECHJENSEN, N (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 25 TC 24 Z9 24 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6352 EP 6359 DI 10.1103/PhysRevB.50.6352 PG 8 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500065 ER PT J AU FAIZ, M JENNINGS, G CAMPUZANO, JC ALP, EE YAO, JM SALDIN, DK YU, JJ AF FAIZ, M JENNINGS, G CAMPUZANO, JC ALP, EE YAO, JM SALDIN, DK YU, JJ TI ORIENTATIONS OF OXYGEN HOLE STATES AND IONICITY OF BISMUTH ATOMS IN BI2SR2CACU2O8 SO PHYSICAL REVIEW B LA English DT Article ID X-RAY-ABSORPTION; ANGLE-RESOLVED PHOTOEMISSION; SYMMETRY; EDGE; XAS AB We report a study of the x-ray-absorption near-edge structure of the Bi L3 and 0 K edges in Bi2Sr2CaCu2O8. A comparison with the Bi L3 edges of Bi2O3 and KBiO3 indicates that the Bi atoms are in a state close to a formal valency of +3 in the superconducting compound. We attribute the peaks below 529 eV in the O K-edge spectra of Bi2Sr2CaCu2O8 to holes on the 0 sites. We investigate the symmetries of these holes by using polarized x rays. By comparing the experimental spectra with simulations based on self-consistent electronic-structure calculations, we determine that the hole states at the O sites in the Cu-O and Bi-O planes do indeed lie in these planes, while those associated with the apical O atoms of the O pyramids in the structure are aligned along the c axis. C1 UNIV ILLINOIS,CHICAGO,IL 60680. UNIV WISCONSIN,MILWAUKEE,WI 53211. SOGANG UNIV,SEOUL 100611,SOUTH KOREA. RP FAIZ, M (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. RI Campuzano, Juan Carlos/G-4358-2012 NR 21 TC 14 Z9 14 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6370 EP 6374 DI 10.1103/PhysRevB.50.6370 PG 5 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500068 ER PT J AU PANKALUOTO, R BANSIL, A SMEDSKJAER, LC MIJNARENDS, PE AF PANKALUOTO, R BANSIL, A SMEDSKJAER, LC MIJNARENDS, PE TI A-AXIS-PROJECTED ELECTRON-POSITRON-MOMENTUM DENSITY AND POSITRON-ANNIHILATION SPECTRA IN YBA2CU3O7-X SO PHYSICAL REVIEW B LA English DT Article ID 2-DIMENSIONAL ANGULAR-CORRELATION; FERMI-SURFACE; TEMPERATURE SUPERCONDUCTORS; UNTWINNED YBA2CU3O6.9; METALLIC YBA2CU3O7-X; 2D ACAR; 2D-ACAR; DISPERSION; RADIATION; LIFETIME AB We present and discuss theoretical and experimental a-axis-projected two-dimensional angular correlation of annihilation radiation (2D-ACAR) spectra from YBa2Cu3O7-x. The experiment involved an untwinned metallic single crystal of YBa2Cu3O6.9 at room temperature. The calculations have been carried out within the conventional first-principles band-theory framework based on the local-density approximation; the positron state is treated in the independent-particle model. After the as-observed 2DACAR spectrum is corrected for an isotropic background, a good accord is found between not only the overall shape but also the fine structure in the measured and computed spectra, some discrepancies not-withstanding. Extensive analysis shows that the experimental spectrum clearly contains the signature of the electron ridge Fermi surface (FS) arising from Cu-O chains in the first Brillouin zone. Also the first and second Umklapp images of the ridge FS at higher momenta are in substantial accord with theoretical predictions. These results suggest that the electron states in Y123 are not localized, at least not strongly, along the c direction. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. DELFT UNIV TECHNOL,INTERFAC REACTOR INST,2629 JB DELFT,NETHERLANDS. TAMPERE UNIV TECHNOL,DEPT PHYS,SF-33101 TAMPERE 10,FINLAND. RP PANKALUOTO, R (reprint author), NORTHEASTERN UNIV,DEPT PHYS,BOSTON,MA 02115, USA. NR 52 TC 9 Z9 9 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6408 EP 6415 DI 10.1103/PhysRevB.50.6408 PG 8 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500073 ER PT J AU DOMINGUEZADAME, F MACIA, E SANCHEZ, A AF DOMINGUEZADAME, F MACIA, E SANCHEZ, A TI OPTICAL-ABSORPTION IN PAIRED CORRELATED RANDOM LATTICES SO PHYSICAL REVIEW B LA English DT Note ID RANDOM-DIMER MODEL; FRENKEL EXCITONS; SYSTEMS AB Optical absorption in a random one-dimensional lattice in the presence of paired correlated disorder is studied. The absorption line shape is evaluated by solving the microscopic equations of motion of the Frenkel-exciton problem in the lattice. We find that paired correlation causes the occurrence of well-defined characteristic lines in the absorption spectra which clearly differ from the case of unpaired correlation. The behavior of the absorption lines as a function of defect concentration is studied in detail. We also show how exciton dynamics can be inferred from experimental data by deriving an analytical expression relating the energy and intensity of lines to the model parameters. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. UNIV CARLOS III MADRID,ESCUELA POLITECN SUPER,E-28911 LEGANES,SPAIN. INST ESTUDIOS INTERDISCIPLINARES,E-28260 MADRID,SPAIN. RP DOMINGUEZADAME, F (reprint author), UNIV COMPLUTENSE,FAC FIS,DEPT FIS MAT,E-28040 MADRID,SPAIN. RI Sanchez, Angel/A-9229-2008; Dominguez-Adame, Francisco/E-4277-2010 OI Sanchez, Angel/0000-0003-1874-2881; Dominguez-Adame, Francisco/0000-0002-5256-4196 NR 8 TC 13 Z9 13 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6453 EP 6456 DI 10.1103/PhysRevB.50.6453 PG 4 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500080 ER PT J AU LI, Q SUENAGA, M GU, GD KOSHIZUKA, N AF LI, Q SUENAGA, M GU, GD KOSHIZUKA, N TI ANGULAR-DEPENDENCE OF THE FLUCTUATION-INDUCED MAGNETIZATION OF SINGLE-CRYSTALLINE BI2SR2CACU2O8 NEAR T(C) SO PHYSICAL REVIEW B LA English DT Note ID VORTEX FLUCTUATIONS; SUPERCONDUCTING BI2SR2CA2CU3O10; H(C2)(T) LINE; THERMODYNAMICS AB We report a detailed measurement of the magnetization for a high-quality Bi2Sr2CaCu2O8 single crystal as a function of magnetic field (H) and the angle between H and the c-axis, near the transition temperature T(c). The fluctuation magnetization for H parallel to the c-axis was found to be in excellent agreement with the recently developed vortex-fluctuation theory by Bulaevskii et al. and the order-parameter fluctuation theory by Tesanovic et al. However, our fluctuation magnetization data for the fields, applied at a large angle with respect to the c-axis, were found inconsistent with the expectations from the above theories. C1 UNIV NEW S WALES,SCH PHYS,KENSINGTON,NSW 2033,AUSTRALIA. ISTEC,SUPERCONDUCT RES LAB,KOTO KU,TOKYO 135,JAPAN. RP LI, Q (reprint author), BROOKHAVEN NATL LAB,DIV MAT SCI,UPTON,NY 11973, USA. NR 15 TC 9 Z9 9 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6489 EP 6492 DI 10.1103/PhysRevB.50.6489 PG 4 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500090 ER PT J AU CHO, JH MALEY, MP FLESHLER, S LACERDA, A BULAEVSKII, LN AF CHO, JH MALEY, MP FLESHLER, S LACERDA, A BULAEVSKII, LN TI HIGH-MAGNETIC-FIELD TRANSPORT-PROPERTIES OF BI2SR2CACU2O8 SINGLE-CRYSTALS SO PHYSICAL REVIEW B LA English DT Note ID JOSEPHSON-COUPLED SYSTEMS; CU-O; SUPERCONDUCTORS; STATE; IRREVERSIBILITY; DISSIPATION; MODEL AB We have measured the high-magnetic-field dependences (up to 18 T) of the in-plane and out-of-plane transport properties of Bi2Sr2CaCu2O8 (Bi-2:2:1:2) single crystals. From I-V curves of c-axis transport we extract the magnetic field and temperature dependences of the interlayer critical current and define a decoupling line H(D)(T) above which J(c,c) vanishes. The temperature dependence of J(c,c) supports a first-order decoupling transition. The decoupling line lies close to the irreversibility line in the field interval 0.5-5 T. The field dependence of the in-plane vortex activation energy is approximately B-0.5 +/- 0.1. C1 LOS ALAMOS NATL LAB,NATL HIGH MAGNET FIELD LAB,PULSED FIELD FACIL,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV NEUROL,LOS ALAMOS,NM 87545. RP CHO, JH (reprint author), LOS ALAMOS NATL LAB,SUPERCONDUCT TECHNOL CTR,MS K763,LOS ALAMOS,NM 87545, USA. NR 28 TC 87 Z9 87 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 9 BP 6493 EP 6496 DI 10.1103/PhysRevB.50.6493 PG 4 WC Physics, Condensed Matter SC Physics GA PG285 UT WOS:A1994PG28500091 ER PT J AU LU, ZW ZUNGER, A AF LU, ZW ZUNGER, A TI UNEQUAL WAVE VECTORS IN SHORT-RANGE VERSUS LONG-RANGE ORDERING IN INTERMETALLIC COMPOUNDS SO PHYSICAL REVIEW B LA English DT Article ID TRANSITION-METAL ALLOYS; DENSITY-FUNCTIONAL THEORY; AU-NI ALLOY; PHASE-DIAGRAMS; SEMICONDUCTOR ALLOYS; ELECTRONIC-STRUCTURE; 1ST-PRINCIPLES CALCULATION; MISCIBILITY GAP; TOTAL ENERGY; STABILITY AB The sign of the formation energy DELTAH(F) of a compound indicates if the low-temperature long-range order (LRO) corresponds to compound formation (when DELTAH(F) < 0) or to phase-separation (when DELTAH(F) > 0). However, DELTAH(F) by itself does not tell us what type (ordering or clustering) of high-temperature short-range order (SRO) can be expected. The reason is that DELTAH(F) contains two types of contributions: an ''elastic,'' volume-deformation energy G(x) that reflects the energy invested in deforming the constituents A and B to the volume V(x) of the A1-(x)B(x) alloy, and a ''chemical'' energy epsilon that reflects A-B interactions (charge transfer and atomic relaxations) at a fixed V(x). We show that the LRO and the SRO have the same behavior only when the signs of DELTAH(F) and epsilon are the same: ordering tendencies (''type I'') when both DELTAH(F) < 0 and epsilon < 0, or phase-separating/clustering tendencies (''type III'') when both DELTAH(F) > 0 and epsilon > 0. However, ''type II'' systems (DELTAH(F) > 0; epsilon < 0) can exhibit a phase-separating LRO and an ordering-type SRO. Direct self-consistent local-density calculations of the total energy coupled with Monte-Carlo simulated annealing calculations of the ensuing Ising-like cluster expansion illustrate these type I, II, and III behaviors in Ni-V, Ni-Au, and Pd-Rh, respectively. C1 NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 82 TC 31 Z9 31 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6626 EP 6636 DI 10.1103/PhysRevB.50.6626 PG 11 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200012 ER PT J AU LU, ZW LAKS, DB WEI, SH ZUNGER, A AF LU, ZW LAKS, DB WEI, SH ZUNGER, A TI 1ST-PRINCIPLES SIMULATED-ANNEALING STUDY OF PHASE-TRANSITIONS AND SHORT-RANGE ORDER IN TRANSITION-METAL AND SEMICONDUCTOR ALLOYS SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC CHARGE-DISTRIBUTION; LONG-PERIOD SUPERSTRUCTURES; EFFECTIVE-PAIR INTERACTIONS; ABSORPTION FINE-STRUCTURE; DENSITY-FUNCTIONAL THEORY; RANDOM SOLID-SOLUTIONS; INTERMETALLIC COMPOUNDS; GROUND-STATE; TOTAL-ENERGY; CU-PD AB Total-energy local-density calculations on approximately 20 periodic crystal structures of a given AB compound are used to define a long-range Ising Hamiltonian which correctly represents atomic relaxations. This allows us to accurately calculate structural energies of relaxed substitutional A1-xBx systems containing thousands of transition-metal atoms, simply by adding up spin products in the Ising Hamiltonian. The computational cost is thus size independent. We then apply Monte Carlo and simulated-annealing techniques to this Ising Hamiltonian, finding (i) the T = 0 ground-state structures, (ii) the order-disorder transition temperatures T(c), and (iii) the T > T(c) short-range-order parameters. The method is illustrated for a transition-metal alloy (Cu1-xPdx) and a semiconductor alloy (Ga1-xInxP). It extends the applicability of the local-density method to finite temperatures and to huge substitutional supercells. We find for Cu0.75Pd0.25 a characteristic fourfold splitting of the diffuse scattering intensity due to short-range order as observed experimentally. C1 NATL RENEWABLE ENERGY LAB, GOLDEN, CO 80401 USA. RI Zunger, Alex/A-6733-2013 NR 110 TC 71 Z9 71 U1 1 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 SEP 1 PY 1994 VL 50 IS 10 BP 6642 EP 6661 DI 10.1103/PhysRevB.50.6642 PG 20 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200014 ER PT J AU WADDILL, GD TOBIN, JG GUO, X TONG, SY AF WADDILL, GD TOBIN, JG GUO, X TONG, SY TI SPIN-POLARIZED PHOTOELECTRON DIFFRACTION USING CIRCULARLY-POLARIZED X-RAYS SO PHYSICAL REVIEW B LA English DT Article ID CORE-LEVEL PHOTOEMISSION; FCC FE FILMS; ULTRATHIN FILMS; DICHROISM; SCATTERING; FE/CU(001); CU(100); FERROMAGNETS; TRANSITION; SOLIDS AB The observation of spin-dependent photoelectron diffraction using circularly polarized x rays is reported for Fe films on Cu(001). Circularly polarized x rays produce spin-polarized photoelectrons from the Fe 2p doublet, and intensity asymmetries in the 2p3/2 level are observed. Fully spin-specific multiple-scattering calculations reproduce the experimentally determined energy and angular dependences. An analytical procedure is introduced which removes exchange shift contributions to the Fe 2p asymmetry, and focuses instead upon intensity variations due to spin-dependent diffraction. C1 UNIV WISCONSIN,SURFACE STUDIES LAB,MILWAUKEE,WI 53201. UNIV WISCONSIN,DEPT PHYS,MILWAUKEE,WI 53201. RP WADDILL, GD (reprint author), LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & AMT SCI,POB 808,L-357,LIVERMORE,CA 94550, USA. RI Tobin, James/O-6953-2015 NR 30 TC 20 Z9 20 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6774 EP 6778 DI 10.1103/PhysRevB.50.6774 PG 5 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200026 ER PT J AU PURWANTO, A ROBINSON, RA HAVELA, L SECHOVSKY, V SVOBODA, P NAKOTTE, H PROKES, K DEBOER, FR SERET, A WINAND, JM REBIZANT, J SPIRLET, JC AF PURWANTO, A ROBINSON, RA HAVELA, L SECHOVSKY, V SVOBODA, P NAKOTTE, H PROKES, K DEBOER, FR SERET, A WINAND, JM REBIZANT, J SPIRLET, JC TI MAGNETIC-ORDERING IN U2PD2IN AND U2PD2SN SO PHYSICAL REVIEW B LA English DT Article ID ACTINIDE AB The tetragonal intermetallic compounds U2Pd2In and U2Pd2Sn have been studied by means of magnetic susceptibility, magnetization, specific heat, electrical resistivity, and x-ray- and neutron-diffraction techniques. The compounds order antiferromagnetically at 36 and 41 K, respectively, and have enhanced electronic specific-heat coefficients gamma of 393 and 203 mJ/mol f.u. K2, respectively. At low temperature, the nearest-neighbor U-U spacing is along the c axis in both compounds, though in U2Pd2Sn the in-plane U-U distance is shorter at room temperature. This crossover is due to motion of the U atoms within the cell rather than anisotropy of the thermal contraction. It is now well established in several classes of (1:1:1) uranium ternary intermetallic compounds that the strong magnetic anisotropy is correlated with the direction of nearest-neighbor U-U links; the moments are almost invariably oriented perpendicular to such links. This is also the case for U2Pd2In and U2Pd2Sn, where the moments lie in the tetragonal basal plane in a canted arrangement along [110] and [11BAR0] directions. Of four such Shubnikov subgroups of P4/mbm, one is clearly preferred by the data. At 10 K, the magnetic moments extracted are (1.6 +/- 0.2)mu(B) and (2.0 +/- 0.1)mu(B) per U atom in U2Pd2In and U2Pd2Sn, respectively. C1 NEW MEXICO STATE UNIV,DEPT PHYS,LAS CRUCES,NM 88003. CHARLES UNIV,DEPT MET PHYS,CS-12116 PRAGUE 2,CZECH REPUBLIC. UNIV AMSTERDAM,VAN DER WAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS. EUROPEAN COMMISS,JOINT RES CTR,INST TRANSURANIUM ELEMENTS,D-76125 KARLSRUHE,GERMANY. RP PURWANTO, A (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545, USA. RI Sechovsky, Vladimir/A-5256-2008 OI Sechovsky, Vladimir/0000-0003-1298-2120 NR 23 TC 54 Z9 54 U1 0 U2 11 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6792 EP 6801 DI 10.1103/PhysRevB.50.6792 PG 10 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200028 ER PT J AU BARNES, T RIERA, J AF BARNES, T RIERA, J TI SUSCEPTIBILITY AND EXCITATION SPECTRUM OF (VO)2P2O7 IN LADDER AND DIMER-CHAIN MODELS SO PHYSICAL REVIEW B LA English DT Article ID SPIN-1/2 HEISENBERG-ANTIFERROMAGNET; HALDANE GAP AB We present numerical results for the magnetic susceptibility of a Heisenberg antiferromagnetic spin ladder as a function of temperature and the spin-spin interaction strengths J(perpendicular-to) and J(parallel-to). These are contrasted with bulk-limit results for the dimer chain. A fit to the experimental susceptibility of the candidate spin-ladder compound vanadyl pyrophosphate, (VO)2P2O7, gives the parameters J(perpendicular-to) = 7.82 meV and J(parallel-to) = 7.76 meV. With these values we predict a singlet-triplet energy gap of E(gap) = 3.9 meV, and give a numerical estimate of the ladder triplet dispersion relation omega(k). In contrast, a fit to the dimer-chain model leads to J1 = 11.11 meV and J2 = 8.02 meV, which predicts a gap of E(gap) = 4.9 meV. C1 OAK RIDGE NATL LAB, CTR COMPUTAT INTENS PHYS, OAK RIDGE, TN 37831 USA. FAC CIENCIAS EXACTAS ROSARIO, DEPT FIS, RA-2000 ROSARIO, ARGENTINA. UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA. VANDERBILT UNIV, DEPT PHYS & ASTRON, NASHVILLE, TN 37235 USA. RP OAK RIDGE NATL LAB, DIV PHYS, OAK RIDGE, TN 37831 USA. RI Riera, Jose/A-1234-2008 OI Riera, Jose/0000-0003-4546-1137 NR 35 TC 214 Z9 214 U1 0 U2 7 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9950 EI 2469-9969 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6817 EP 6822 DI 10.1103/PhysRevB.50.6817 PG 6 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200031 ER PT J AU NORMAN, MR AF NORMAN, MR TI ORBITALLY DEGENERATE SPIN-FLUCTUATION MODEL FOR HEAVY-FERMION SUPERCONDUCTIVITY SO PHYSICAL REVIEW B LA English DT Article ID UPPER CRITICAL-FIELD; SUPERFLUID TRANSITION-TEMPERATURES; UNCONVENTIONAL SUPERCONDUCTIVITY; ELECTRON SUPERCONDUCTORS; NEUTRON-SCATTERING; ORDER PARAMETER; MAGNETIC ORDER; PHASE-DIAGRAM; SYSTEM UPT3; HE-3 AB In this paper, a generalization of standard spin-fluctuation theory is considered by replacing the simple Hubbard interaction by the screened Hartree-Fock interaction for f electrons. This model is then used in both an LS and a JJ coupling scheme to construct the particle-particle scattering vertex. In an on-site approximation, this vertex is shown to lead to an instability for a superconducting pair state which obeys Hunds rules, with L = 5, S = 1, and J = 4, whereas for near-neighbor pairing, the most attractive instability is for J = 0. The degeneracy of these multiplets is broken by anisotropy of the quasi-particle wave functions. Detailed calculations are presented for the case of UPt3. RP NORMAN, MR (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. RI Norman, Michael/C-3644-2013 NR 102 TC 16 Z9 16 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6904 EP 6918 DI 10.1103/PhysRevB.50.6904 PG 15 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200044 ER PT J AU TELSCHOW, KL KOO, LS AF TELSCHOW, KL KOO, LS TI INTEGRAL-EQUATION APPROACH FOR THE BEAM CRITICAL-STATE MODEL IN DEMAGNETIZING AND NONUNIFORM-FIELD GEOMETRIES SO PHYSICAL REVIEW B LA English DT Article ID TC SUPERCONDUCTING GRANULES; MAGNETIC-FLUX PROFILES; DISK-SHAPED SUPERCONDUCTORS; APPROXIMATION AB This paper describes an integral-equation approach to solving for the flux-front profile in the critical-state model. Both nonuniform external fields and demagnetizing geometries can be accommodated as long as cylindrical symmetry is preserved. The solution for a sphere in a uniform external field is presented and compared with those of other calculation techniques. RP TELSCHOW, KL (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415, USA. NR 18 TC 17 Z9 17 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 6923 EP 6928 DI 10.1103/PhysRevB.50.6923 PG 6 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200046 ER PT J AU STAUB, U ANTONIO, MR SODERHOLM, L GUILLAUME, M HENGGELER, W FURRER, A AF STAUB, U ANTONIO, MR SODERHOLM, L GUILLAUME, M HENGGELER, W FURRER, A TI TB OXIDATION-STATE AND HYBRIDIZATION IN Y0.9TB0.1BA2CU3O7-DELTA(DELTA=0.02, 0.84) - A MAGNETIC-SUSCEPTIBILITY AND X-RAY-ABSORPTION STUDY SO PHYSICAL REVIEW B LA English DT Article ID SUPERCONDUCTIVITY; PRBA2CU3O7; SM; EU; GD; CMBA2CU3O7; ERBA2CU3OX; SYSTEMS; SPECTRA; ND AB A variety of experimental techniques are employed to probe the electronic state of Tb in the supeconductor Y0.9Tb0.1Ba2Cu3O7-delta. An analysis of neutron-diffraction data reveals that Tb is incorporated into the sample, replacing Y. There are no anomalies observed in the lattice constants or the planar oxygen thermal parameters determined from the neutron data, but the low concentration of Tb prohibits the determination of Tb oxidation state from these data alone. A comparison of experimentally determined magnetic susceptibilities with those calculated from single-ion, crystal-field models assuming either Tb3+ or Tb4+ shows a close agreement between the Tb3+ model and experiment. The presence of Tb3+ is confirmed by x-ray absorption near-edge spectroscopy. L3-edge data are used to argue that the Tb ions are not significantly hybridized in Y0.9Tb0.1Ba2Cu3O7-delta. C1 PSI & ETH ZURICH,NEUTRONSCATTERING LAB,CH-5232 VILLIGEN,SWITZERLAND. RP STAUB, U (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. RI Staub, Urs/C-4914-2015 NR 37 TC 31 Z9 32 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 7085 EP 7091 DI 10.1103/PhysRevB.50.7085 PG 7 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200060 ER PT J AU LEVY, JL LAUGHLIN, RB AF LEVY, JL LAUGHLIN, RB TI SPIN SUSCEPTIBILITY AND GAP STRUCTURE OF THE FRACTIONAL-STATISTICS GAS SO PHYSICAL REVIEW B LA English DT Article ID RANDOM-PHASE APPROXIMATION; QUANTUM-MECHANICS; SCATTERING AB This paper establishes and tests procedures which can determine the electron energy gap of the high-temperature superconductors using the t-J model with spinon and holon quasiparticles obeying fractional statistics. A simpler problem with similar physics, the spin susceptibility spectrum of the spin-1/2 fractional-statistics gas, is studied. Interactions with the density oscillations of the system substantially decrease the spin gap to a value of (0.2 +/- 0.2)hBARomega(c), much less than the mean-field value of hBARomega(c). The lower-few Landau levels remain visible, though broadened and shifted, in the spin susceptibility. As a check of the methods, the single-particle Green's function of the noninteracting Bose gas viewed in the fermionic representation, as computed by the same approximation scheme, agrees well with the exact results. The same mechanism would reduce the gap of the t-J model without eliminating it. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP LEVY, JL (reprint author), STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305, USA. NR 20 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 7107 EP 7123 DI 10.1103/PhysRevB.50.7107 PG 17 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200063 ER PT J AU CIVALE, L KRUSINELBAUM, L THOMPSON, JR HOLTZBERG, F AF CIVALE, L KRUSINELBAUM, L THOMPSON, JR HOLTZBERG, F TI COLLECTIVE CREEP OF VORTEX BUNDLES IN YBA2CU3O7 CRYSTALS SO PHYSICAL REVIEW B LA English DT Note ID CU-O CRYSTALS; HIGH-TC SUPERCONDUCTORS; FLUX-CREEP; SINGLE-CRYSTAL; THERMAL FLUCTUATIONS; IRREVERSIBILITY LINE; II SUPERCONDUCTORS; CRITICAL STATE; DEPENDENCE; PHASE AB We present evidence for the crossover between creep of individual vortices and collective creep of vortex bundles from measurements of the relaxation of the persistent currents in YBa2Cu3O7 single crystals over long periods of time. In the single-vortex regime at low fields the relaxation is fast and is characterized by an exponent mu congruent-to 0.16, as predicted in the collective-creep scenario. With increasing field, collective bundling of vortices induces a slowdown of the relaxation, with a maximum mu congruent-to 1.4. At even higher fields, mu decreases again to about 1 as the size of the bundles grows. C1 IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 31 TC 42 Z9 42 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 7188 EP 7191 DI 10.1103/PhysRevB.50.7188 PG 4 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200081 ER PT J AU CHACNAM, H FALICOV, LM KOILLER, B AF CHACNAM, H FALICOV, LM KOILLER, B TI ORIENTATIONAL DISORDER AND THE BAND-GAP OF SOLID MOLECULAR-HYDROGEN UNDER PRESSURE SO PHYSICAL REVIEW B LA English DT Note ID 1ST-PRINCIPLES QUASI-PARTICLE; MEGABAR PRESSURES; PHASE-TRANSITION; METALLIZATION; DYNAMICS AB The influence of librational motion (orientational disorder) on the electronic structure of molecular solid hydrogen is investigated by means of a microcrystal formalism. A cluster consisting of 64 molecules in the hexagonal close-packed structure with periodic boundary conditions is diagonalized exactly in a parametrized tight-binding approximation. The influence of pressure and libration are examined for a variety of orientational structures. It is found that the stable orientational structure varies with pressure, and that orientational phase transitions occur just before the insulator-to-metal transition (closing of the gap). The theoretical results seem to explain satisfactorily the anomalies observed in dielectric measurements of solid hydrogen at high pressure. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22452970 RIO JANEIRO,BRAZIL. RP CHACNAM, H (reprint author), UNIV FED MINAS GERAIS,INST CIENCIAS EXATAS,DEPT FIS,CAIXA POSTAL 702,BR-30161 BELO HORIZONT,MG,BRAZIL. NR 16 TC 8 Z9 8 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 7195 EP 7198 DI 10.1103/PhysRevB.50.7195 PG 4 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200083 ER PT J AU JONES, EC CHRISTEN, DK SALES, BC AF JONES, EC CHRISTEN, DK SALES, BC TI SIGN REVERSALS IN THE VORTEX-STATE HALL-EFFECT IN Y-BA-CU-O - CORRELATIONS WITH THE NORMAL-STATE SEEBECK COEFFICIENT SO PHYSICAL REVIEW B LA English DT Note ID EPITAXIAL THIN-FILMS; TRANSPORT-PROPERTIES; II SUPERCONDUCTORS; YBA2CU3O7-DELTA; RESISTIVITY; BEHAVIOR; MOTION AB Superconducting-Hall-effect R(H) transitions were measured on 11 YBa2Cu3O7-delta epitaxial thin films grown under a range of electronic ''doping'' conditions. The data reveal that the relative magnitude of the anomalous sign reversals in R(H) monotonically decrease with decreasing carrier density and vanish below a threshold cutoff value. The sign reversals in R(H) are observed only in films having a negative normal-state Seebeck coefficient, and are correlated in magnitude. This suggests that the energy slope of the electronic density of states plays a role in the occurrence of these anomalies. C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. NR 21 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 1 PY 1994 VL 50 IS 10 BP 7234 EP 7237 DI 10.1103/PhysRevB.50.7234 PG 4 WC Physics, Condensed Matter SC Physics GA PH222 UT WOS:A1994PH22200093 ER PT J AU BATINIC, M LEE, TSH LOCHER, MP LU, Y SVARC, A AF BATINIC, M LEE, TSH LOCHER, MP LU, Y SVARC, A TI OFF-SHELL EFFECTS FOR THE REACTION PP-]PI-D AT HIGH-ENERGIES SO PHYSICAL REVIEW C LA English DT Article ID ISOVECTOR DIBARYON RESONANCE; DIFFERENTIAL CROSS-SECTION; REACTION PP->PI-D; PROTON ENERGIES; ANALYZING POWER; DEUTERON SCATTERING; PP->D-PI+ REACTION; DEPENDENCE; QUESTION; REGION AB The reaction pp --> pi d is studied in a relativistic meson rescattering model. For 1.3 < T-p < 2.4 GeV the differential cross section and the asymmetry are calculated and compared to experiment. The model introduces simple form factors for the leading pi N partial waves which depend on the virtuality of the exchanged mesons, pi and rho. All remaining input is derived from experimental constraints. The data can be described by energy-independent form factors. The asymmetries are sensitive to pp distortion factors and further details of the model. C1 RUDJER BOSKOVIC INST,ZAGREB 41001,CROATIA. ARGONNE NATL LAB,ARGONNE,IL 60439. RP BATINIC, M (reprint author), PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND. NR 33 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 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1994 VL 50 IS 3 BP 1300 EP 1307 DI 10.1103/PhysRevC.50.1300 PG 8 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600011 ER PT J AU FORTUNE, HT LIU, GB ALBURGER, DE AF FORTUNE, HT LIU, GB ALBURGER, DE TI (SD)(2) STATES IN BE-12 SO PHYSICAL REVIEW C LA English DT Article ID NEUTRON AB The Be-10(t, p)Be-12 reaction has been studied with 15- and 17-MeV triton beams. At 17 MeV, angular distributions were measured for five low-lying states, and distorted-wave Born-approximation calculations were used to analyze the data. Contributions from Be-10 (g.s.) circle times(sd)(2) and complete 1p-shell wave functions were investigated. Comparison is made with (sd)2 states in C-14 and C-16. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP FORTUNE, HT (reprint author), UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104, USA. NR 19 TC 87 Z9 88 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 SEP PY 1994 VL 50 IS 3 BP 1355 EP 1359 DI 10.1103/PhysRevC.50.1355 PG 5 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600017 ER PT J AU OLIVEIRA, JRB FRAUENDORF, S DELEPLANQUE, MA CEDERWALL, B DIAMOND, RM MACCHIAVELLI, AO STEPHENS, FS BURDE, J DRAPER, JE DUYAR, C RUBEL, E BECKER, JA HENRY, EA BRINKMAN, MJ KUHNERT, A STOYER, MA WANG, TF AF OLIVEIRA, JRB FRAUENDORF, S DELEPLANQUE, MA CEDERWALL, B DIAMOND, RM MACCHIAVELLI, AO STEPHENS, FS BURDE, J DRAPER, JE DUYAR, C RUBEL, E BECKER, JA HENRY, EA BRINKMAN, MJ KUHNERT, A STOYER, MA WANG, TF TI HIGH-K BANDS IN THE YB-166 REGION SO PHYSICAL REVIEW C LA English DT Article ID NUCLEI AB High-K bands have been observed in the Yb-166,Yb-167,Yb-168 isotopes following the Sn-124(Ca-48,xn gamma) reaction. The nu h(11/2) bend in Yb-167 has been extended to higher spins. The high-K bands in the even-even isotopes were observed for the first time and show very high B(M1)/B(E2) ratios. Configuration assignments for the new bands are proposed. The results are interpreted within the tilted cranking model. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. UNIV CALIF DAVIS,DAVIS,CA 95616. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RI Oliveira, Jose Roberto/J-3124-2012; Cederwall, Bo/M-3337-2014 OI Oliveira, Jose Roberto/0000-0003-1362-7382; Cederwall, Bo/0000-0003-1771-2656 NR 15 TC 11 Z9 11 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1994 VL 50 IS 3 BP 1360 EP 1369 DI 10.1103/PhysRevC.50.1360 PG 10 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600018 ER PT J AU KHANKHASAYEV, MK SARAFIAN, H JOHNSON, MB KURMANOV, ZB AF KHANKHASAYEV, MK SARAFIAN, H JOHNSON, MB KURMANOV, ZB TI EFFECT OF PION EXTERNAL DISTORTION ON LOW-ENERGY PION DOUBLE-CHARGE-EXCHANGE SO PHYSICAL REVIEW C LA English DT Article ID UNIFIED ANALYSIS; NUCLEAR CORRELATIONS; SCATTERING; ATOMS; ABSORPTION; CURRENTS; SINGLE; C-14 AB We simplify a treatment of pion distortions using a separable expansion of optical potential in momentum space. We use this method to gain insight into the role of distortions in isoelastic pion charge-exchange scattering within the framework of the isospin-invariant optical model. The method provides an analytic procedure for calculating external distortions of single- and double-charge-exchange scattering. This allows us to analyze separately the role of on- and off-shell pions in distortions for each partial wave. Results for sequential scattering at 50 MeV for the reaction C-14(pi(+), pi(-))O-14 are presented. It is shown that the external distortions give a small enhancement in forward directions and reduce the differential cross sections at large angles. C1 PENN STATE UNIV,DEPT PHYS,YORK,PA 17403. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NATL NUCL CTR,INST PHYS NUCL,ALMA ATA 480082,KAZAKHSTAN. RP KHANKHASAYEV, MK (reprint author), JOINT INST NUCL RES,THEORET PHYS LAB,DUBNA 141980,RUSSIA. NR 30 TC 5 Z9 5 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 SEP PY 1994 VL 50 IS 3 BP 1424 EP 1435 DI 10.1103/PhysRevC.50.1424 PG 12 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600026 ER PT J AU GOBBI, C DOVER, CB GAL, A AF GOBBI, C DOVER, CB GAL, A TI SCALAR AND VECTOR-MESON PRODUCTION IN (K-, K+) REACTIONS ON NUCLEI SO PHYSICAL REVIEW C LA English DT Article ID DOUBLE HYPERNUCLEUS; K-,K+ REACTION; H-DIBARYON; WEAK DECAY; SEARCH AB An analysis of the observed double-strangeness-exchange (K-, K+) inclusive cross sections at 1.65 GeV/c on nuclear targets is presented. The K+ momentum spectrum displays a low momentum peak centered around 600 MeV/c, which we interpret as due to the first order K(-)p-->phi Lambda, a(0) Lambda, and f(0) Lambda processes, followed by phi, a(0), f(0)--> K+K- decays. This hypothesis is shown to be approximately consistent with the shape of the K+ spectrum, its integrated cross section, and the A(alpha) dependence observed for the (K-,K+) cross section on targets of mass number A. We predict a rapid energy dependence for the nuclear (K-,K+) process in the momentum region 1.4-1.8 GeV/c near the two-body thresholds for producing scalar (a(0),f(0)) and vector (phi) mesons in K(-)p collisions. C1 YALE UNIV,CTR THEORET PHYS,SLOANE PHYS LAB,NEW HAVEN,CT 06511. BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. HEBREW UNIV JERUSALEM,RACAH INST PHYS,IL-91904 JERUSALEM,ISRAEL. RP GOBBI, C (reprint author), UNIV WASHINGTON,NATL INST NUCL THEORY,SEATTLE,WA 98195, USA. NR 31 TC 6 Z9 7 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 SEP PY 1994 VL 50 IS 3 BP 1594 EP 1605 DI 10.1103/PhysRevC.50.1594 PG 12 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600041 ER PT J AU BISPLINGHOFF, J AF BISPLINGHOFF, J TI PREEQUILIBRIUM ALPHA-EMISSION IN THE EXCITON MODEL SO PHYSICAL REVIEW C LA English DT Article ID PARTICLE-EMISSION; CLUSTER EMISSION; SPECTRA; CHANNELS; HYDROGEN; NUCLEI; DECAY AB A new model approach to preequilibrium alpha emission is presented which does not contain a preformation parameter or hypothesis. It takes explicit account of a pickup type of emission process. The correlation requirement proposed for the nucleons forming the emitted cluster is solely based on the cluster binding energy, and it fits readily into the framework of the exciton model. Numerical calculations are shown to be in good agreement with experimental data. C1 UNIV BONN,INST STRAHLEN & KERNPHYS,W-5300 BONN,GERMANY. RP BISPLINGHOFF, J (reprint author), LAWRENCE LIVERMORE NATL LAB,DIV E,LIVERMORE,CA 94550, USA. NR 39 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 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1994 VL 50 IS 3 BP 1611 EP 1616 DI 10.1103/PhysRevC.50.1611 PG 6 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600043 ER PT J AU SCHNEDERMANN, E HEINZ, U AF SCHNEDERMANN, E HEINZ, U TI HYDRODYNAMICAL ASSESSMENT OF 200A GEV COLLISIONS SO PHYSICAL REVIEW C LA English DT Article ID HEAVY-ION COLLISIONS; RELATIVISTIC NUCLEAR COLLISIONS; TRANSVERSE-MOMENTUM DISTRIBUTIONS; QUARK GLUON PLASMA; GEV S+S COLLISIONS; PARTICLE-PRODUCTION; COLLECTIVE FLOW; SPECTRA; MODEL; MATTER AB We are analyzing the hydrodynamics of 200A GeV S+S collisions using a new approach which tries to quantify the uncertainties arising from the specific implementation of the hydrodynamical model. Based on a previous phenomenological analysis we use the global hydrodynamics model to show that the amount of initial how, or initial energy density, cannot be determined from the hadronic momentum spectra. We additionally find that almost always a,sizable transverse how develops, which causes the system to freeze out, thereby limiting the how velocity in itself. This freeze-out dominance in turn makes a distinction between a plasma and a hadron resonance gas equation of state very difficult, whereas a pure pion gas can easily be ruled out from present data. To complete the picture we also analyze particle multiplicity data, which suggest that chemical equilibrium is not reached with respect to the strange particles. However, the overpopulation of pions seems to be at most moderate, with a pion chemical potential far away from the Bose divergence. C1 UNIV REGENSBURG,INST THEORET PHYS,D-93040 REGENSBURG,GERMANY. RP SCHNEDERMANN, E (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 52 TC 89 Z9 90 U1 0 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1994 VL 50 IS 3 BP 1675 EP 1683 DI 10.1103/PhysRevC.50.1675 PG 9 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600050 ER PT J AU VO, DT KELLY, WH WOHN, FK HILL, JC VARY, JP DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM OLIVEIRA, JRB MACCHIAVELLI, AO BECKER, JA HENRY, EA BRINKMAN, MJ STOYER, MA DRAPER, JE AF VO, DT KELLY, WH WOHN, FK HILL, JC VARY, JP DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM OLIVEIRA, JRB MACCHIAVELLI, AO BECKER, JA HENRY, EA BRINKMAN, MJ STOYER, MA DRAPER, JE TI VERY WEAK GAMMA-TRANSITIONS IN THE EPSILON/BETA(+) DECAY OF GA-68 SO PHYSICAL REVIEW C LA English DT Note AB The gamma rays associated with the decay of Ga-68 in equilibrium with Ge-68 have been studied using the 20-element High Energy Resolution Array (HERA) facility. Five new transitions were observed along with the known ones from earlier works. The E2/M1 mixing ratios for two of these new transitions were obtained by gamma-gamma(theta) techniques. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV CALIF DAVIS,DAVIS,CA 95616. UNIV SAO PAULO,SAO PAULO,BRAZIL. RP VO, DT (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011, USA. RI Oliveira, Jose Roberto/J-3124-2012 OI Oliveira, Jose Roberto/0000-0003-1362-7382 NR 9 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 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD SEP PY 1994 VL 50 IS 3 BP 1713 EP 1716 DI 10.1103/PhysRevC.50.1713 PG 4 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600056 ER PT J AU CASTEN, RF VONBRENTANO, P AF CASTEN, RF VONBRENTANO, P TI NEW INTERPRETATION OF THE LOWEST K=0 COLLECTIVE EXCITATION OF DEFORMED-NUCLEI AS A PHONON EXCITATION OF THE GAMMA-BAND SO PHYSICAL REVIEW C LA English DT Note ID INTERACTING-BOSON-APPROXIMATION; STATES; ER-168 AB Interacting-boson approximation calculations of the properties of the lowest K = 0 intrinsic excitation of deformed nuclei suggest that this mode is not a beta vibration as is traditionally thought but rather it is a collective phonon built on the gamma vibration. This conclusion is in agreement with a wide body of experimental data concerning the K=0 excitation. C1 UNIV COLOGNE,INST KERNPHYS,D-50937 COLOGNE,GERMANY. RP CASTEN, RF (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 15 TC 50 Z9 50 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 SEP PY 1994 VL 50 IS 3 BP R1280 EP R1282 PG 3 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600006 ER PT J AU HUGHES, JR BECKER, JA BRINKMAN, MJ FARRIS, LP HENRY, EA HOFF, RW STOYER, MA CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM FALLON, P LEE, IY MACCHIAVELLI, AO STEPHENS, FS BERNSTEIN, LA YOUNES, W JIN, HQ DRAPER, JE DUYAR, C RUBEL, E KELLY, WH VO, DT AF HUGHES, JR BECKER, JA BRINKMAN, MJ FARRIS, LP HENRY, EA HOFF, RW STOYER, MA CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM FALLON, P LEE, IY MACCHIAVELLI, AO STEPHENS, FS BERNSTEIN, LA YOUNES, W JIN, HQ DRAPER, JE DUYAR, C RUBEL, E KELLY, WH VO, DT TI EXCITATIONS IN DOUBLY-MAGIC SUPERDEFORMED PB-194 SO PHYSICAL REVIEW C LA English DT Note ID SHAPE ISOMERISM; NUCLEI; SPIN; BANDS; ALIGNMENT AB A new superdeformed band with an intensity similar to 5% relative to the yrast superdeformed band has been observed in Pb-194. Evidence for a second new band corresponding to the signature partner is also presented. These bands were observed with GAMMASPHERE early implementation via the Yb-174(Mg-25, 5n) reaction at a beam energy of 130 MeV. The rotational characteristics of the new bands suggest an interpretation involving particle-hole excitations in the doubly-magic Pb-194 superdeformed core. The results are compared to neighboring nuclei and recent theoretical calculations, and possible configurations are suggested. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903. UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50010. RP HUGHES, JR (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI Cederwall, Bo/M-3337-2014 OI Cederwall, Bo/0000-0003-1771-2656 NR 27 TC 24 Z9 24 U1 2 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 SEP PY 1994 VL 50 IS 3 BP R1265 EP R1269 PG 5 WC Physics, Nuclear SC Physics GA PH716 UT WOS:A1994PH71600002 ER PT J AU ABE, F ALBROW, MG AMENDOLIA, SR AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H AUCHINCLOSS, P AUSTERN, M AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M COUPAL, DP CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRISCH, H FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, H GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J HENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P LYS, J MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, K STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S AF ABE, F ALBROW, MG AMENDOLIA, SR AMIDEI, D ANTOS, J ANWAYWIESE, C APOLLINARI, G ARETI, H AUCHINCLOSS, P AUSTERN, M AZFAR, F AZZI, P BACCHETTA, N BADGETT, W BAILEY, MW BAO, J DEBARBARO, P BARBAROGALTIERI, A BARNES, VE BARNETT, BA BARTALINI, P BAUER, G BAUMANN, T BEDESCHI, F BEHRENDS, S BELFORTE, S BELLETTINI, G BELLINGER, J BENJAMIN, D BENLLOCH, J BENSINGER, J BENTON, D BERETVAS, A BERGE, JP BERTOLUCCI, S BHATTI, A BIERY, K BINKLEY, M BIRD, F BISELLO, D BLAIR, RE BLOCKER, C BODEK, A BOLOGNESI, V BORTOLETTO, D BOSWELL, C BOULOS, T BRANDENBURG, G BUCKLEYGEER, E BUDD, HS BURKETT, K BUSETTO, G BYONWAGNER, A BYRUM, KL CAMPAGNARI, C CAMPBELL, M CANER, A CARITHERS, W CARLSMITH, D CASTRO, A CEN, Y CERVELLI, F CHAPMAN, J CHENG, MT CHIARELLI, G CHIKAMATSU, T CIHANGIR, S CLARK, AG COBAL, M CONTRERAS, M CONWAY, J COOPER, J CORDELLI, M COUPAL, DP CRANE, D CUNNINGHAM, JD DANIELS, T DEJONGH, F DELCHAMPS, S DELLAGNELLO, S DELLORSO, M DEMORTIER, L DENBY, B DENINNO, M DERWENT, PF DEVLIN, T DICKSON, M DONATI, S DRUCKER, RB DUNN, A EINSWEILER, K ELIAS, JE ELY, R ENGELS, E ENO, S ERREDE, D ERREDE, S FAN, Q FARHAT, B FIORI, I FLAUGHER, B FOSTER, GW FRANKLIN, M FRAUTSCHI, M FREEMAN, J FRIEDMAN, J FRISCH, H FRY, A FUESS, TA FUKUI, Y FUNAKI, S GAGLIARDI, G GALEOTTI, S GALLINARO, M GARFINKEL, AF GEER, S GERDES, DW GIANNETTI, P GIOKARIS, N GIROMINI, P GLADNEY, L GLENZINSKI, D GOLD, M GONZALEZ, J GORDON, A GOSHAW, AT GOULIANOS, K GRASSMANN, H GREWAL, A GRIECO, G GROER, L GROSSOPILCHER, C HABER, C HAHN, SR HAMILTON, R HANDLER, R HANS, RM HARA, K HARRAL, B HARRIS, RM HAUGER, SA HAUSER, J HAWK, C HEINRICH, J HENNESSY, D HOLLEBEEK, R HOLLOWAY, L HOLSCHER, A HONG, S HOUK, G HU, P HUFFMAN, BT HUGHES, R HURST, P HUSTON, J HUTH, J HYLEN, J INCAGLI, M INCANDELA, J ISO, H JENSEN, H JESSOP, CP JOSHI, U KADEL, RW KAJFASZ, E KAMON, T KANEKO, T KARDELIS, DA KASHA, H KATO, Y KEEBLE, L KENNEDY, RD KEPHART, R KESTEN, P KESTENBAUM, D KEUP, RM KEUTELIAN, H KEYVAN, F KIM, DH KIM, HS KIM, SB KIM, SH KIM, YK KIRSCH, L KOEHN, P KONDO, K KONIGSBERG, J KOPP, S KORDAS, K KOSKA, W KOVACS, E KOWALD, W KRASBERG, M KROLL, J KRUSE, M KUHLMANN, SE KUNS, E LAASANEN, AT LAMMEL, S LAMOUREUX, JI LECOMPTE, T LEONE, S LEWIS, JD LIMON, P LINDGREN, M LISS, TM LOCKYER, N LONG, O LORETI, M LOW, EH LU, J LUCCHESI, D LUCHINI, CB LUKENS, P LYS, J MAAS, P MAESHIMA, K MAGHAKIAN, A MAKSIMOVIC, P MANGANO, M MANSOUR, J MARIOTTI, M MARRINER, JP MARTIN, A MATTHEWS, JAJ MATTINGLY, R MCINTYRE, P MELESE, P MENZIONE, A MESCHI, E MICHAIL, G MIKAMO, S MILLER, M MILLER, R MIMASHI, T MISCETTI, S MISHINA, M MITSUSHIO, H MIYASHITA, S MORITA, Y MOULDING, S MUELLER, J MUKHERJEE, A MULLER, T MUSGRAVE, P NAKAE, LF NAKANO, I NELSON, C NEUBERGER, D NEWMANHOLMES, C NODULMAN, L OGAWA, S OH, SH OHL, KE OISHI, R OKUSAWA, T PAGLIARONE, C PAOLETTI, R PAPADIMITRIOU, V PARK, S PATRICK, J PAULETTA, G PAULINI, M PESCARA, L PETERS, MD PHILIPS, TJ PIACENTINO, G PILLAI, M PLUNKETT, R PONDROM, L PRODUIT, N PROUDFOOT, J PTOHOS, F PUNZI, G RAGAN, K RIMONDI, F RISTORI, L ROACHBELLINO, M ROBERTSON, WJ RODRIGO, T ROMANO, J ROSENSON, L SAKUMOTO, WK SALTZBERG, D SANSONI, A SCARPINE, V SCHINDLER, A SCHLABACH, P SCHMIDT, EE SCHMIDT, MP SCHNEIDER, O SCIACCA, GF SCRIBANO, A SEGLER, S SEIDEL, S SEIYA, Y SGANOS, G SGOLACCHIA, A SHAPIRO, M SHAW, NM SHEN, Q SHEPARD, PF SHIMOJIMA, M SHOCHET, M SIEGRIST, J SILL, A SINERVO, P SINGH, P SKARHA, J SLIWA, K SMITH, DA SNIDER, FD SONG, L SONG, T SPALDING, J SPIEGEL, L SPHICAS, P SPIES, A STANCO, L STEELE, J STEFANINI, K STRAHL, K STRAIT, J STUART, D SULLIVAN, G SUMOROK, K SWARTZ, RL TAKAHASHI, T TAKIKAWA, K TARTARELLI, F TAYLOR, W TERAMOTO, Y TETHER, S THERIOT, D THOMAS, J THOMAS, TL THUN, R TIMKO, M TIPTON, P TITOV, A TKACZYK, S TOLLEFSON, K TOLLESTRUP, A TONNISON, J DETROCONIZ, JF TSENG, J TURCOTTE, M TURINI, N UEMURA, N UKEGAWA, F UNAL, G VANDENBRINK, S VEJCIK, S VIDAL, R VONDRACEK, M WAGNER, RG WAGNER, RL WAINER, N WALKER, RC WANG, G WANG, J WANG, MJ WANG, QF WARBURTON, A WATTS, G WATTS, T WEBB, R WENDT, C WENZEL, H WESTER, WC WESTHUSING, T WICKLUND, AB WILKINSON, R WILLIAMS, HH WILSON, P WINER, BL WOLINSKI, J WU, DY WU, X WYSS, J YAGIL, A YAO, W YASUOKA, K YE, Y YEH, GP YEH, P YIN, M YOH, J YOSHIDA, T YOVANOVITCH, D YU, I YUN, JC ZANETTI, A ZETTI, F ZHANG, L ZHANG, S ZHANG, W ZUCCHELLI, S TI EVIDENCE FOR TOP-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS AT ROOT-S=1.8 TEV SO PHYSICAL REVIEW D LA English DT Article ID = 1.8 TEV; ALPHA-S CALCULATION; W-GLUON FUSION; HADRONIC COLLISIONS; PBARP COLLISIONS; P(P)OVER-BAR COLLISIONS; PARTON DISTRIBUTIONS; FERMILAB TEVATRON; PPBAR COLLISIONS; CROSS-SECTION AB We present the results of a search for the top quark in 19.3 pb(-1) of pp $($) over bar$$ collisions at root s = 1.8 TeV. The data were collected at the Fermilab Tevatron collider using the Collider Detector at Fermilab (CDF). The search includes standard model tt $($) over bar$$ decays to final states eevv $$($) over bar e mu vv $$($) over bar, and mu mu vv $$($) over bar; as well as e+v+ jets or mu+v+ jets. In the (e,mu)+v+ jets channel we search for b quarks from r decays via secondary vertex identification and via semileptonic decays of the b and cascade c quarks. In the dilepton final states we find two events with a background of 0.56(-0.13)(+0.25) events. In the e,mu)+v+ jets channel with a b identified via a secondary vertex, we find six events with a background of 2.3 +/- 0.3. With a b identified via a semileptonic decay, we find seven events with a background of 3.1 +/- 0.3. The secondary vertex and semileptonic-decay samples have three events in common. The probability that the observed yield is consistent with the background is estimated to be 0.26%. The statistics are too limited to firmly establish the existence of the top quark; however, a natural interpretation of the excess is that it is due to tt $($) over bar$$ production. We present several cross-checks. Some support this hypothesis; others do not. Under the assumption that the excess yield over background is due to tt, constrained fitting on a subset of the events yields a mass of 174 +/- 10(-12)(+13) GeV/c(2) for the top quark. The tt $($) over bar$$ cross section, using this top quark mass to compute the acceptance, is measured to be 13.9(-4.8)(+6.1) pb. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. BRANDEIS UNIV,WALTHAM,MA 02254. UNIV BOLOGNA,IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. DUKE UNIV,DURHAM,NC 27708. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. HARVARD UNIV,CAMBRIDGE,MA 02138. UNIV ILLINOIS,URBANA,IL 61801. MCGILL UNIV,INST PARTICLE PHYS,MONTREAL H3A 2T8,PQ,CANADA. UNIV TORONTO,TORONTO M5S 1A7,ON,CANADA. JOHNS HOPKINS UNIV,BALTIMORE,MD 21218. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. MIT,CAMBRIDGE,MA 02139. UNIV MICHIGAN,ANN ARBOR,MI 48109. MICHIGAN STATE UNIV,E LANSING,MI 48824. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. OSAKA CITY UNIV,OSAKA 588,JAPAN. UNIV PADUA,INST NAZL FIS NUCL,SEZ PADOVA,I-35131 PADUA,ITALY. UNIV PENN,PHILADELPHIA,PA 19104. UNIV PITTSBURGH,PITTSBURGH,PA 15260. UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY. SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV ROCHESTER,ROCHESTER,NY 14627. ROCKEFELLER UNIV,NEW YORK,NY 10021. RUTGERS STATE UNIV,PISCATAWAY,NJ 08854. ACAD SINICA,TAIPEI 11529,TAIWAN. SUPERCONDUCTING SUPER COLLIDER LAB,DALLAS,TX 75237. TEXAS A&M UNIV,COLLEGE STN,TX 77843. UNIV TSUKUBA,TSUKUBA,IBARAKI 305,JAPAN. TUFTS UNIV,MEDFORD,MA 02155. UNIV WISCONSIN,MADISON,WI 53706. YALE UNIV,NEW HAVEN,CT 06511. UNIV CHICAGO,CHICAGO,IL 60637. RP ABE, F (reprint author), KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN. RI Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012; Punzi, Giovanni/J-4947-2012; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Paulini, Manfred/N-7794-2014 OI Chiarelli, Giorgio/0000-0001-9851-4816; Azzi, Patrizia/0000-0002-3129-828X; Punzi, Giovanni/0000-0002-8346-9052; Warburton, Andreas/0000-0002-2298-7315; Paulini, Manfred/0000-0002-6714-5787 NR 80 TC 489 Z9 490 U1 1 U2 8 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 SEP 1 PY 1994 VL 50 IS 5 BP 2966 EP 3026 DI 10.1103/PhysRevD.50.2966 PG 61 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900004 ER PT J AU MCGAUGHEY, PL MOSS, JM ALDE, DM BAER, HW CAREY, TA GARVEY, GT KLEIN, A LEE, C LEITCH, MJ LILLBERG, J MISHRA, CS PENG, JC BROWN, CN COOPER, WE HSIUNG, YB ADAMS, MR GUO, R KAPLAN, DM MCCARTHY, RL DANNER, G WANG, M BARLETT, M HOFFMANN, G AF MCGAUGHEY, PL MOSS, JM ALDE, DM BAER, HW CAREY, TA GARVEY, GT KLEIN, A LEE, C LEITCH, MJ LILLBERG, J MISHRA, CS PENG, JC BROWN, CN COOPER, WE HSIUNG, YB ADAMS, MR GUO, R KAPLAN, DM MCCARTHY, RL DANNER, G WANG, M BARLETT, M HOFFMANN, G TI CROSS-SECTIONS FOR THE PRODUCTION OF HIGH-MASS MUON PAIRS FROM 800 GEV PROTON-BOMBARDMENT OF H-2 SO PHYSICAL REVIEW D LA English DT Article ID NUCLEAR-DEPENDENCE; DIMUON PRODUCTION; COLLISIONS AB Absolute cross sections as functions of kinematic variables are presented for the production of muon pairs from 800 GeV proton bombardment of H-2. Drell-Yan (continuum) dimuons were recorded in the mass regions 4.5 less than or equal to M(mu+mu-) less than or equal to 9 GeV and M(mu+mu-) greater than or equal to 11 GeV, with an x-Feynman range -0.1 less than or equal to x(F) less than or equal to 0.75. This range corresponds to smaller masses and larger values of x(F) than previous 800 GeV Drell-Yan data. Cross sections for the gamma (1S) resonance are also given versus the transverse momentum and x(F). C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ILLINOIS,CHICAGO,IL 60680. NO ILLINOIS UNIV,DE KALB,IL 60115. SUNY STONY BROOK,STONY BROOK,NY 11794. CASE WESTERN RESERVE UNIV,CLEVELAND,OH 44106. UNIV TEXAS,AUSTIN,TX 78712. RP MCGAUGHEY, PL (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 8 TC 71 Z9 71 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 SEP 1 PY 1994 VL 50 IS 5 BP 3038 EP 3045 DI 10.1103/PhysRevD.50.3038 PG 8 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900006 ER PT J AU AMBROSIO, M ANTOLINI, R AURIEMMA, G BAKER, R BALDINI, A BAM, B BARBARINO, GC BARISH, BC BATTISTONI, G BELLOTTI, R BEMPORAD, C BERNARDINI, P BILOKON, H BISI, V BLOISE, C BOWER, C BUSSINO, S CAFAGNA, F CALICCHIO, M CAMPANA, D CARBONI, M CORONA, A CECCHINI, S CEI, F CHIARELLA, V CORMACK, R COUTU, S DECATALDO, G DEKHISSI, H DEMARZO, C DEVINCENZI, M DICREDICO, A DIEHL, E ERRIQUEZ, O FAVUZZI, C FORTI, C FUSCO, P GIACOMELLI, G GIANNINI, G GIGLIETTO, N GRASSI, M GREEN, P GRILLO, A GUARINO, F GUARNACCIA, P GUSTAVINO, C HABIG, A HEINZ, R HONG, JT IAROCCI, E KATSAVOUNIDIS, E KEARNS, E KERTZMAN, M KYRIAZOPOULOU, S LAMANNA, E LANE, C LEE, C LEVIN, DS LIPARI, P LIU, G LIU, R LONGO, MJ LU, Y LUDLAM, G MANCARELLA, G MANDRIOLI, G MARGIOTTANERI, A MARIN, A MARINI, A MARTELLO, D CHIESA, AM MICHAEL, DG MIKHEYEV, S MILLER, L MITTLEBRUNN, M MONACELLI, P MONTENO, M MUFSON, S MUSSER, J NICOLO, D NOLTY, R NUTTER, S OKADA, C OSTERIA, G PALAMARA, O PARLATI, S PATERA, V PATRIZII, L PAVESI, B PAZZI, R PECK, CW PETRAKIS, J PETRERA, S PIGNATANO, ND PISTILLI, P PREDIERI, F REYNOLDSON, J RONGA, F SANZANI, G SANZGIRI, A SATRIANO, C SATTA, L SCAPPARONE, E SCHOLBERG, K SCIUBBA, A SEMBROSKI, G LUGARESI, PS SEVERI, M SITTA, M SPINELLI, P SPINETTI, M SPURIO, M STEELE, J STEINBERG, R STONE, JL SULAK, LR SURDO, A TARLE, G TOGO, V VALENTE, V WAITER, CW WEBB, R WORSTELL, W AF AMBROSIO, M ANTOLINI, R AURIEMMA, G BAKER, R BALDINI, A BAM, B BARBARINO, GC BARISH, BC BATTISTONI, G BELLOTTI, R BEMPORAD, C BERNARDINI, P BILOKON, H BISI, V BLOISE, C BOWER, C BUSSINO, S CAFAGNA, F CALICCHIO, M CAMPANA, D CARBONI, M CORONA, A CECCHINI, S CEI, F CHIARELLA, V CORMACK, R COUTU, S DECATALDO, G DEKHISSI, H DEMARZO, C DEVINCENZI, M DICREDICO, A DIEHL, E ERRIQUEZ, O FAVUZZI, C FORTI, C FUSCO, P GIACOMELLI, G GIANNINI, G GIGLIETTO, N GRASSI, M GREEN, P GRILLO, A GUARINO, F GUARNACCIA, P GUSTAVINO, C HABIG, A HEINZ, R HONG, JT IAROCCI, E KATSAVOUNIDIS, E KEARNS, E KERTZMAN, M KYRIAZOPOULOU, S LAMANNA, E LANE, C LEE, C LEVIN, DS LIPARI, P LIU, G LIU, R LONGO, MJ LU, Y LUDLAM, G MANCARELLA, G MANDRIOLI, G MARGIOTTANERI, A MARIN, A MARINI, A MARTELLO, D CHIESA, AM MICHAEL, DG MIKHEYEV, S MILLER, L MITTLEBRUNN, M MONACELLI, P MONTENO, M MUFSON, S MUSSER, J NICOLO, D NOLTY, R NUTTER, S OKADA, C OSTERIA, G PALAMARA, O PARLATI, S PATERA, V PATRIZII, L PAVESI, B PAZZI, R PECK, CW PETRAKIS, J PETRERA, S PIGNATANO, ND PISTILLI, P PREDIERI, F REYNOLDSON, J RONGA, F SANZANI, G SANZGIRI, A SATRIANO, C SATTA, L SCAPPARONE, E SCHOLBERG, K SCIUBBA, A SEMBROSKI, G LUGARESI, PS SEVERI, M SITTA, M SPINELLI, P SPINETTI, M SPURIO, M STEELE, J STEINBERG, R STONE, JL SULAK, LR SURDO, A TARLE, G TOGO, V VALENTE, V WAITER, CW WEBB, R WORSTELL, W TI COINCIDENT OBSERVATION OF AIR CERENKOV LIGHT BY A SURFACE ARRAY AND MUON BUNDLES BY A DEEP UNDERGROUND DETECTOR SO PHYSICAL REVIEW D LA English DT Article ID GRAN-SASSO; MACRO DETECTOR; EVENTS; LVD AB We report on the simultaneous observation of atmospheric Cerenkov light by a prototype five telescope array, GRACE (Gran Sasso Air Cerenkov Experiment) with deep underground muons in the MACRO (Monopole Astrophysics and Cosmic Ray Observatory). The telescope array was deployed at Campo Imperatore above the Gran Sasso Laboratory for a run completed in the fall of 1992. The total live time for the combined surface-underground operation was similar to 100 h during which more than 300 events were seen in coincidence. The efficacy of this technique to monitor the electromagnetic and penetrating muon components of a cosmic-ray-induced cascade is discussed. C1 IST NAZL FIS NUCL,I-80125 NAPLES,ITALY. UNIV BARI,DIPARTMENTO FIS,BARI,ITALY. IST NAZL FIS NUCL,BARI,ITALY. UNIV BOLOGNA,DEPT PHYS,I-40126 BOLOGNA,ITALY. IST NAZL FIS NUCL,BOLOGNA,ITALY. BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215. CALTECH,PASADENA,CA 91125. DREXEL UNIV,DEPT PHYS,PHILADELPHIA,PA 19104. INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405. INDIANA UNIV,DEPT ASTRON,BLOOMINGTON,IN 47405. IST NAZL FIS NUCL,LAB NAZL GRAN SASSO,ASSERGI,ITALY. IST NAZL FIS NUCL,LAB NAZL FRASCATI,FRASCATI,ITALY. UNIV LAQUILA,DIPARTIMENTO FIS,I-67100 LAQUILA,ITALY. IST NAZL FIS NUCL,LAQUILA,ITALY. UNIV LECCE,DIPARTIMENTO FIS,I-73100 LECCE,ITALY. IST NAZL FIS NUCL,LECCE,ITALY. UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109. UNIV PISA,DIPARTIMENTO FIS,PISA,ITALY. IST NAZL FIS NUCL,PISA,ITALY. UNIV ROME,DIPARTIMENTO FIS,ROME,ITALY. IST NAZL FIS NUCL,ROME,ITALY. TEXAS A&M UNIV,DEPT PHYS,COLLEGE STN,TX 77843. UNIV TURIN,DIPARTIMENTO FIS,TURIN,ITALY. IST NAZL FIS NUCL,I-10125 TURIN,ITALY. UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. DEPAUW UNIV,DEPT PHYS,GREENCASTLE,IN 46135. UNIV BASILICATA,I-85100 POTENZA,ITALY. IST NAZL FIS NUCL,MILAN,ITALY. CNR,IST TESRE,I-40126 BOLOGNA,ITALY. FAC SCI OUJDA,OUJDA,MOROCCO. UNIV TRIESTE,TRIESTE,ITALY. IST NAZL FIS NUCL,TRIESTE,ITALY. UNIV ROMA,DIPARTIMENTO ENERGET,ROME,ITALY. RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW,RUSSIA. RP AMBROSIO, M (reprint author), UNIV NAPLES,DIPARTIMENTO FIS,NAPLES,ITALY. RI Guarino, Fausto/I-3166-2012; Spurio, Maurizio/G-4170-2012; giglietto, nicola/I-8951-2012; Cafagna, Francesco/A-9299-2010; Lamanna, Ernesto/C-7658-2012; Barbarino, Giancarlo/L-2559-2015; Martello, Daniele/J-3131-2012; Cei, Fabrizio/M-8891-2016 OI Guarino, Fausto/0000-0003-1427-9885; Carboni, Massimo/0000-0003-4296-3799; giglietto, nicola/0000-0002-9021-2888; Cafagna, Francesco/0000-0002-7450-4784; Lamanna, Ernesto/0000-0002-7844-8230; Barbarino, Giancarlo/0000-0001-9253-3397; Martello, Daniele/0000-0003-2046-3910; Cei, Fabrizio/0000-0002-8313-3540 NR 38 TC 2 Z9 2 U1 0 U2 7 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 SEP 1 PY 1994 VL 50 IS 5 BP 3046 EP 3058 DI 10.1103/PhysRevD.50.3046 PG 13 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900007 ER PT J AU BRODSKY, SJ FRANKFURT, L GUNION, JF MUELLER, AH STRIKMAN, M AF BRODSKY, SJ FRANKFURT, L GUNION, JF MUELLER, AH STRIKMAN, M TI DIFFRACTIVE LEPTOPRODUCTION OF VECTOR-MESONS IN QCD SO PHYSICAL REVIEW D LA English DT Article ID DEEP INELASTIC-SCATTERING; DISTRIBUTIONS; COLLISIONS; MOMENTUM; NUCLEI; PHOTON; GLUON AB We demonstrate that the distinctive features of the forward differential cross section of diffractive leptoproduction of a vector meson can be legitimately calculated in perturbative QCD in terms of the lightcone qq $($) over bar$$ wave function of the vector meson and the gluon distribution of the target. In particular, we calculate the Q(2) and nuclear dependence of the diffractive leptoproduction of vector mesons and estimate the cross section. The production of longitudinally polarized vector mesons by longitudinally polarized virtual photons is predicted to be the dominant component, yielding a cross section behaving as Q(-6) The nuclear dependence of the diffractive cross sections, which follows from a factorization theorem in perturbative QCD, provides important tests of color transparency as well as constraints on the shadowing of the gluon structure functions and the longitudinal structure functions of nuclei. C1 TEL AVIV UNIV,RAYMOND & BEVERLY SACKLER FAC EXACT SCI,SCH PHYS & ASTRON,RAMAT AVIV,ISRAEL. UNIV CALIF DAVIS,DAVIS INST HIGH ENERGY PHYS,DEPT PHYS,DAVIS,CA 95616. COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027. PENN STATE UNIV,DEPT PHYS,UNIVERSITY PK,PA 16802. ST PETERSBURG NUCL PHYS INST,ST PETERSBURG,RUSSIA. RP BRODSKY, SJ (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 30 TC 454 Z9 454 U1 1 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 SEP 1 PY 1994 VL 50 IS 5 BP 3134 EP 3144 DI 10.1103/PhysRevD.50.3134 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900014 ER PT J AU BRAATEN, E YUAN, TC AF BRAATEN, E YUAN, TC TI GLUON FRAGMENTATION INTO P-WAVE HEAVY QUARKONIUM SO PHYSICAL REVIEW D LA English DT Article ID QCD PREDICTIONS; Z(0) DECAY; MESONS; CHARMONIUM; JETS; Z0 AB The fragmentation functions for gluons to split into P-wave heavy quarkonium states are calculated to leading order in the QCD coupling constant. Long-distance effects are factored into two nonperturbative parameters: the derivative of the radial wave function at the origin and a second parameter related to the probability for a heavy-quark-antiquark pair that is produced in a color-octet S-wave state to form a color-singlet P-wave bound state. The fragmentation probabilities for a high transverse momentum gluon to split into the P-wave charmonium states chi(c0), chi(c1), and chi(c2) are estimated to be 0.4 x 10(-4), 1.8 x 10(-4), and 2.4 x 10(-4), respectively. This fragmentation process may account for a significant fraction of the rate for the inclusive production of chi(cJ) at large transverse momentum in pp $($) over bar$$ colliders. C1 UNIV CALIF DAVIS,DAVIS INST HIGH ENERGY PHYS,DEPT PHYS,DAVIS,CA 95616. RP BRAATEN, E (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 22 TC 83 Z9 83 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 SEP 1 PY 1994 VL 50 IS 5 BP 3176 EP 3180 DI 10.1103/PhysRevD.50.3176 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900019 ER PT J AU RIZZO, TG AF RIZZO, TG TI CONSTRAINTS FROM B-]S-GAMMA ON THE LEFT-RIGHT-SYMMETRICAL MODEL SO PHYSICAL REVIEW D LA English DT Article ID RIGHT-HANDED CURRENTS; B->S-GAMMA DECAY; STANDARD MODEL; QCD ENHANCEMENT; MESON DECAY; SEARCH; SCALE; QUARK; MASS AB Recent results from the CLEO Collaboration on both inclusive and exclusive radiative B decays are used to constrain the parameter space of two versions of the left-right symmetric model. In the first scenario, when the left- and right-handed Cabibbo-Kobayashi-Maskawa mixing matrices are equal, V-L = V-R, the radiative B decay data are shown to lead to strong bounds on the W-L - W-R mixing angle that are quite insensitive to either the top quark or W-R mass. The second scenario examined is that of Groanu and Wakaizumi wherein b-quark decays proceed only via right-handed currents and V-L and V-R are quite distinct. For this model, the combined constraints from Fermilab Tevatron W-R searches, the B lifetime, and radiative B decays lead to a very highly restricted allowed range for the W-L - W-R mixing angle. RP RIZZO, TG (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309, USA. NR 51 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 SEP 1 PY 1994 VL 50 IS 5 BP 3303 EP 3309 DI 10.1103/PhysRevD.50.3303 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900031 ER PT J AU FRABETTI, PL CHEUNG, HWK CUMALAT, JP DALLAPICCOLA, C GINKEL, JF GREENE, SV JOHNS, WE NEHRING, MS BUTLER, JN CIHANGIR, S GAINES, I GARBINCIUS, PH GARREN, L GOURLAY, SA HARDING, DJ KASPER, P KREYMER, A LEBRUN, P SHUKLA, S VITTONE, M BIANCO, S FABBRI, FL SARWAR, S ZALLO, A CULBERTSON, R GARDNER, RW GREENE, R WISS, J ALIMONTI, G BELLINI, G CACCIANIGA, B CINQUINI, L DICORATO, M GIAMMARCHI, M INZANI, P LEVERARO, F MALVEZZI, S MENASCE, D MERONI, E MORONI, L PEDRINI, D PERASSO, L SALA, A SALA, S TORRETTA, D BUCHHOLZ, D CLAES, D GOBBI, B OREILLY, B BISHOP, JM CASON, NM KENNEDY, CJ KIM, GN LIN, TF PUSELJIC, DL RUCHTI, RC SHEPHARD, WD SWIATEK, JA WU, ZY ARENA, V BOCA, G CASTOLDI, C GIANINI, G RATTI, SP RICCARDI, C VITULO, P LOPEZ, A GRIM, GP PAOLONE, VS YAGER, PM WILSON, JR SHELDON, PD DAVENPORT, F FILASETTA, JF BLACKETT, GR PISHARODY, M HANDLER, T CHEON, BG KANG, JS KIM, KY AF FRABETTI, PL CHEUNG, HWK CUMALAT, JP DALLAPICCOLA, C GINKEL, JF GREENE, SV JOHNS, WE NEHRING, MS BUTLER, JN CIHANGIR, S GAINES, I GARBINCIUS, PH GARREN, L GOURLAY, SA HARDING, DJ KASPER, P KREYMER, A LEBRUN, P SHUKLA, S VITTONE, M BIANCO, S FABBRI, FL SARWAR, S ZALLO, A CULBERTSON, R GARDNER, RW GREENE, R WISS, J ALIMONTI, G BELLINI, G CACCIANIGA, B CINQUINI, L DICORATO, M GIAMMARCHI, M INZANI, P LEVERARO, F MALVEZZI, S MENASCE, D MERONI, E MORONI, L PEDRINI, D PERASSO, L SALA, A SALA, S TORRETTA, D BUCHHOLZ, D CLAES, D GOBBI, B OREILLY, B BISHOP, JM CASON, NM KENNEDY, CJ KIM, GN LIN, TF PUSELJIC, DL RUCHTI, RC SHEPHARD, WD SWIATEK, JA WU, ZY ARENA, V BOCA, G CASTOLDI, C GIANINI, G RATTI, SP RICCARDI, C VITULO, P LOPEZ, A GRIM, GP PAOLONE, VS YAGER, PM WILSON, JR SHELDON, PD DAVENPORT, F FILASETTA, JF BLACKETT, GR PISHARODY, M HANDLER, T CHEON, BG KANG, JS KIM, KY TI SEARCH FOR CP VIOLATION IN CHARM MESON DECAY SO PHYSICAL REVIEW D LA English DT Note AB We report the results of a search for CP-violating decay rate asymmetries (A(CP)) in the charm decay modes DC+ --> K(-)K(+)pi(+), D+ --> (KK+)-K-*0, D+ --> phi pi(+), and D-0 --> K+K-. Our measurements are all consistent with zero asymmetry: A(CP)(KK pi) = -0.03 +/- 0.068, A(CP)((KK)-K-*) = -0.12 +/- 0.13, A(CP)(phi pi)=0.066 +/- 0.086, and A(CP)(KK) = 0.024 +/- 0.084. The data were accumulated by the Fermilab high energy photoproduction experiment E687. C1 IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY. UNIV COLORADO,BOULDER,CO 80309. FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY. UNIV ILLINOIS,URBANA,IL 61801. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. IST NAZL FIS NUCL,I-20133 MILAN,ITALY. NORTHWESTERN UNIV,EVANSTON,IL 60208. UNIV NOTRE DAME,NOTRE DAME,IN 46556. UNIV PAVIA,DIPARTIMENTO FIS NUCL & TEOR,I-27100 PAVIA,ITALY. IST NAZL FIS NUCL,I-27100 PAVIA,ITALY. UNIV PUERTO RICO,MAYAGUEZ,PR. UNIV CALIF DAVIS,DAVIS,CA 95616. UNIV N CAROLINA,ASHEVILLE,NC 28804. NO KENTUCKY UNIV,HIGHLAND HTS,KY 41076. UNIV TENNESSEE,KNOXVILLE,TN 37996. KOREA UNIV,SEOUL 136701,SOUTH KOREA. VANDERBILT UNIV,NASHVILLE,TN 37235. UNIV S CAROLINA,COLUMBIA,SC 29208. RP FRABETTI, PL (reprint author), UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY. NR 6 TC 24 Z9 24 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 SEP 1 PY 1994 VL 50 IS 5 BP R2953 EP R2956 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PG359 UT WOS:A1994PG35900001 ER PT J AU SANCHEZCASTRO, CR AIDUN, JB STRAUB, GK WILLS, JM WALLACE, DC AF SANCHEZCASTRO, CR AIDUN, JB STRAUB, GK WILLS, JM WALLACE, DC TI TEMPERATURE-DEPENDENCE OF PAIR CORRELATIONS AND CORRELATION ENTROPY IN A FLUID SO PHYSICAL REVIEW E LA English DT Article ID MOLECULAR-DYNAMICS; LIQUID AB For a system of atoms interacting through a pair potential, the entropy is evaluated by molecular dynamics at temperatures from the liquid to the gas. The pair potential represents aluminum in the liquid regime and the calculated entropy Is in close agreement with experiment. The temperature dependence of the entropy is understood in terms of structural changes in the pair correlation function. Of the two approximate entropy expansions evaluated in low orders, the Nettleton-Raveche-Green expansion is more accurate at high temperatures, while the multiparticle irreducible correlation expansion is more accurate for the liquid. RP SANCHEZCASTRO, CR (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 21 TC 2 Z9 2 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1994 VL 50 IS 3 BP 2014 EP 2018 DI 10.1103/PhysRevE.50.2014 PG 5 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA PJ443 UT WOS:A1994PJ44300033 ER PT J AU KERSTEIN, AR MCMURTRY, PA AF KERSTEIN, AR MCMURTRY, PA TI LOW-WAVE-NUMBER STATISTICS OF RANDOMLY ADVECTED PASSIVE SCALARS SO PHYSICAL REVIEW E LA English DT Article ID TURBULENCE; CONVECTION; SIMULATIONS AB A heuristic analysis of the decay of a passive scalar field, subject to statistically steady random advection, predicts two low-wave-number spectral scaling regimes analogous to the similarity states previously identified by Chasnov [Phys. Fluids 6, 1036 (1994)]. Consequences of their predicted coexistence in a single flow are examined. The analysis is limited to the idealized case of narrow band advection. To complement the analysis, and to extend the predictions to physically more realistic advection processes, advection diffusion is simulated using a one-dimensional stochastic model. An experimental test of the predictions is proposed. C1 UNIV UTAH, DEPT MECH ENGN, SALT LAKE CITY, UT 84112 USA. RP KERSTEIN, AR (reprint author), SANDIA NATL LABS, COMBUST RES FACIL, LIVERMORE, CA 94551 USA. NR 22 TC 15 Z9 15 U1 0 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 SEP PY 1994 VL 50 IS 3 BP 2057 EP 2063 DI 10.1103/PhysRevE.50.2057 PG 7 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA PJ443 UT WOS:A1994PJ44300038 ER PT J AU WHITNEY, KG THORNHILL, JW GIULIANI, JL DAVIS, J MILES, LA NOLTING, EE KENYON, VL SPEICER, WA DRAPER, JA PARSONS, CR DANG, P SPIELMAN, RB NASH, TJ MCGURN, JS RUGGLES, LE DEENEY, C PRASAD, RR WARREN, L AF WHITNEY, KG THORNHILL, JW GIULIANI, JL DAVIS, J MILES, LA NOLTING, EE KENYON, VL SPEICER, WA DRAPER, JA PARSONS, CR DANG, P SPIELMAN, RB NASH, TJ MCGURN, JS RUGGLES, LE DEENEY, C PRASAD, RR WARREN, L TI OPTIMIZATION OF K-SHELL EMISSION IN ALUMINUM Z-PINCH IMPLOSIONS - THEORY VERSUS EXPERIMENT SO PHYSICAL REVIEW E LA English DT Article ID X-RAY-EMISSION; ARRAY IMPLOSIONS AB Two sets of z-pinch experiments were recently completed at the Saturn and Phoenix facilities of Sandia National Laboratories and the Naval Surface Warfare Center, respectively, using aluminum wire arrays of different wire and array diameters. Measurements of the total x-ray yield from the K shell of aluminum were made. In this paper, a comparison of these measurements is made to both theoretical predictions and to a similar set of earlier measurements that were made at the Double Eagle facility of Physics International Company, These three sets of yield measurements have points of agreement with predicted yields and with each other, but they also show points of mutual disagreement, whose significance is discussed. The data are analyzed using a slightly revised version of a previously published K-shell yield scaling law, and they support the existence of a reasonably well defined region in (load mass)-(implosion velocity) space in which plasma kinetic energy is efficiently converted into K-shell x rays. Furthermore, a correlation is observed between the inferred conversion efficiencies and the times in which the implosions occur relative to the times when each generator's short-circuit current reaches its peak value. Finally, unlike the Double Eagle experiments, the largest measured yields in the new experiments were observed to occur at the upper velocity boundary of the efficient emission region. Moreover, the observed yields are in fairly good quantitative agreement with an earlier scaling law prediction of the maximum K-shell x-ray yield from aluminum as a function of load mass assuming kinetic energy conversion alone. C1 USN,CTR SURFACE WARFARE,WHITE OAK LAB,SILVER SPRING,MD 20903. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. PHYS INT CO,SAN LEANDRO,CA 94577. RP WHITNEY, KG (reprint author), USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375, USA. NR 13 TC 50 Z9 50 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1994 VL 50 IS 3 BP 2166 EP 2174 DI 10.1103/PhysRevE.50.2166 PG 9 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA PJ443 UT WOS:A1994PJ44300052 ER PT J AU RENAUDIN, P CHENAISPOPOVICS, C GAUTHIER, JC PEYRUSSE, O BACK, CA AF RENAUDIN, P CHENAISPOPOVICS, C GAUTHIER, JC PEYRUSSE, O BACK, CA TI TIME-RESOLVED X-RAY-FLUORESCENCE OF HE-LIKE IONS IN AN ALUMINUM-LASER-PRODUCED PLASMA SO PHYSICAL REVIEW E LA English DT Article ID SIMULATIONS AB Quasiresonant photoexcitation and nonresonant photoionization of He-like ions in a two-component laser-produced plasma are demonstrated in the x-ray range. The pumping source is the x-ray emission of a high-Z plasma which modifies the populations of the excited states of an aluminum He-like plasma. Fluorescence of the 1s2p-1s(2) line at 7.757 Angstrom has been measured by time-resolved and time-integrated spectral measurements of the two plasma emissions. Photoionization results compare favorably with radiative transfer simulations which calculate the He-like 1s2p-1s(2) line transfer in the photopumped aluminum plasma. C1 CTR ETUD LIMEIL VALENTON, F-94195 VILLENEUVE ST GEORGES, FRANCE. LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA. RP RENAUDIN, P (reprint author), ECOLE POLYTECH, UTILISAT LASERS INTENSES LAB, F-91128 PALAISEAU, FRANCE. NR 24 TC 1 Z9 1 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1539-3755 J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1994 VL 50 IS 3 BP 2186 EP 2192 DI 10.1103/PhysRevE.50.2186 PG 7 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA PJ443 UT WOS:A1994PJ44300055 ER PT J AU MARCHIORO, TL ARNOLD, M HOFFMAN, DK ZHU, W HUANG, YH KOURI, DJ AF MARCHIORO, TL ARNOLD, M HOFFMAN, DK ZHU, W HUANG, YH KOURI, DJ TI EXTENSIONS TO THE DISTRIBUTED APPROXIMATING FUNCTIONAL - THE HARMONIC PROPAGATOR SO PHYSICAL REVIEW E LA English DT Article ID MONTE-CARLO EVALUATION; INDEPENDENT WAVEPACKET-SCHRODINGER; LIPPMANN-SCHWINGER EQUATIONS; WAVE-PACKET PROPAGATION; FEYNMAN PATH-INTEGRALS; TIME QUANTUM DYNAMICS; TO-ENERGY TRANSFORM; FORMALISM AB The formalism of the distributed approximating functional for integrating the time-dependent Schrodinger equation is extended to allow an analytic treatment of all Hamiltonians of quadratic order. The resulting propagator matrix is highly banded in both position and momentum representations. For certain choices of the parameters, the action of this matrix can be cast in the form of a Toeplitz operator. We demonstrate that banded Toeplitz matrix-vector multiplication can be performed in significantly fewer numerical operations than is required by conventional split-operator fast Fourier transform algorithms. Numerical examples verify the efficiency of this approach in both storage and speed. Extensions of the method to Monte Carlo path integration, and the implementation on massively parallel computer architectures, are discussed. C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50010. UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204. UNIV HOUSTON,DEPT CHEM,HOUSTON,TX 77204. RP MARCHIORO, TL (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50010, USA. NR 30 TC 13 Z9 13 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD SEP PY 1994 VL 50 IS 3 BP 2320 EP 2330 DI 10.1103/PhysRevE.50.2320 PG 11 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA PJ443 UT WOS:A1994PJ44300070 ER PT J AU BARNETT, BM AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BATTY, CJ BEUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CROWE, KM DEGENER, T DIETZ, HP VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, AJ OULDSAADA, F PETERS, K PINDER, CN PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHAFER, E SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOU, B ZOLL, J ZUPANCIC, C AF BARNETT, BM AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BATTY, CJ BEUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CROWE, KM DEGENER, T DIETZ, HP VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, AJ OULDSAADA, F PETERS, K PINDER, CN PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHAFER, E SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOU, B ZOLL, J ZUPANCIC, C TI PHYSICS WITH THE CRYSTAL BARREL - NEW MESONS IN (P)OVER-BAR P ANNIHILATION SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID ANTIPROTON-PROTON ANNIHILATION; PBARP ANNIHILATION; REST; ETA; KKBAR; RESONANCE; SEARCH; MODEL; GAMMA; OMEGA AB An overview of recent results from ppBAR annihilation at rest obtained with the Crystal Barre is presented. These results, which provide information on meson spectroscopy, two-body final states, and meson-decay modes, offer new insight in a number of directions; the results and their implications are discussed. C1 UNIV CALIF BERKELEY,LBL,BERKELEY,CA 94720. UNIV BOCHUM,D-44780 BOCHUM,GERMANY. ACAD SCI BUDAPEST,H-1525 BUDAPEST,HUNGARY. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV HAMBURG,D-22761 HAMBURG,GERMANY. UNIV KARLSRUHE,D-76344 KARLSRUHE,GERMANY. QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV MAINZ,D-55099 MAINZ,GERMANY. UNIV MUNICH,D-85748 MUNICH,GERMANY. CTR RECH NUCL,F-67037 STRASBOURG,FRANCE. UNIV ZURICH,CH-8001 ZURICH,SWITZERLAND. RP BARNETT, BM (reprint author), CERN,DIV PPE,CH-1211 GENEVA 23,SWITZERLAND. NR 51 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1465 EP 1477 PG 13 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300003 ER PT J AU KUNZE, M AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BEUCHERT, K BIRIEN, P BISTIRLICH, J BLUM, P BOSSINGHAM, R BOSSY, H BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CROWE, KM DEGENER, T DIETZ, HP VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MEYERBERKHOUT, U MONTANET, L NOBLE, A OULDSAADA, F PETERS, K PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHAFER, E SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOLL, J ZOU, B ZUPANCIC, C AF KUNZE, M AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BEUCHERT, K BIRIEN, P BISTIRLICH, J BLUM, P BOSSINGHAM, R BOSSY, H BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T COOPER, A CROWE, KM DEGENER, T DIETZ, HP VONDOMBROWSKI, S DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MEYERBERKHOUT, U MONTANET, L NOBLE, A OULDSAADA, F PETERS, K PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHAFER, E SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOLL, J ZOU, B ZUPANCIC, C TI SEARCH FOR HYBRIDS SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID FLUX-TUBE MODEL; SPECTRUM; HADRONS; GEV/C AB The existence of exotic states that do not fit into the picture of qqBAR-mesons is still an unanswered question of QCD. Proton-antiproton annihilation at higher momenta might be a promising source in the search for such states. This report shows the first results obtained using the Crystal Barrel detector system at LEAR (CERN) at an antiproton beam momentum of 1940 MeV/c. C1 UNIV CALIF BERKELEY,LBL,BERKELEY,CA 94720. CERN,DIV PPE,CH-1211 GENEVA 23,SWITZERLAND. UNIV BOCHUM,D-44780 BOCHUM,GERMANY. ACAD SCI BUDAPEST,H-1525 BUDAPEST,HUNGARY. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV HAMBURG,D-22761 HAMBURG,GERMANY. UNIV KARLSRUHE,D-76344 KARLSRUHE,GERMANY. QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV MAINZ,D-55099 MAINZ,GERMANY. UNIV MUNICH,D-85748 MUNICH,GERMANY. CTR RECH NUCL,F-67037 STRASBOURG,FRANCE. UNIV ZURICH,CH-8001 ZURICH,SWITZERLAND. RP KUNZE, M (reprint author), RUHR UNIV BOCHUM,INST EXPTL PHYS 1,UNIV STR 150,D-44801 BOCHUM,GERMANY. OI Meyer, Curtis/0000-0001-7599-3973 NR 16 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1497 EP 1502 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300005 ER PT J AU HASAN, MA ARMSTRONG, T BETTONI, D BHARADWAJ, V BIINO, C BORREANI, G BROEMMELSIEK, D BUZZO, A CALABRESE, R CECCUCCI, A CESTER, R CHURCH, M DALPIAZ, PF DIBENEDETTO, R DIMITROYANNIS, D FABBRI, MG FAST, J GIANOLI, A GINSBURG, C GOLLWITZER, K HAHN, A HSUEH, S LEWIS, R LUPPI, E MACRI, M MAJEWSKA, A MANDELKERN, M MARCHETTO, F MARINELLI, M MARQUES, J MARSH, W MARTINI, M MASUZAWA, M MENICHETTI, E MIGLIORI, A MUSSA, R PALLAVICINI, M PALESTINI, S PASTRONE, N PATRIGNANI, C PEOPLES, J PESANDO, L PETRUCCI, F PIA, MG PORDES, S RAPIDIS, P RAY, R REID, J RINAUDO, G ROCCUZZO, B ROSEN, JL SANTRONI, A SARMIENTO, M SAVRIE, M SCALISI, A SCHULTZ, J SETH, KK SMITH, A SMITH, GA SOZZI, M TROKENHEIM, S WEBER, M WERKEMA, S ZHANG, Y ZHAO, JL ZIOULAS, G AF HASAN, MA ARMSTRONG, T BETTONI, D BHARADWAJ, V BIINO, C BORREANI, G BROEMMELSIEK, D BUZZO, A CALABRESE, R CECCUCCI, A CESTER, R CHURCH, M DALPIAZ, PF DIBENEDETTO, R DIMITROYANNIS, D FABBRI, MG FAST, J GIANOLI, A GINSBURG, C GOLLWITZER, K HAHN, A HSUEH, S LEWIS, R LUPPI, E MACRI, M MAJEWSKA, A MANDELKERN, M MARCHETTO, F MARINELLI, M MARQUES, J MARSH, W MARTINI, M MASUZAWA, M MENICHETTI, E MIGLIORI, A MUSSA, R PALLAVICINI, M PALESTINI, S PASTRONE, N PATRIGNANI, C PEOPLES, J PESANDO, L PETRUCCI, F PIA, MG PORDES, S RAPIDIS, P RAY, R REID, J RINAUDO, G ROCCUZZO, B ROSEN, JL SANTRONI, A SARMIENTO, M SAVRIE, M SCALISI, A SCHULTZ, J SETH, KK SMITH, A SMITH, GA SOZZI, M TROKENHEIM, S WEBER, M WERKEMA, S ZHANG, Y ZHAO, JL ZIOULAS, G TI RECENT RESULTS IN LIGHT-QUARK MESON SPECTROSCOPY FROM FERMILAB EXPERIMENT E-760 SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID ANTIPROTON-PROTON ANNIHILATIONS; RESONANCE; STATES; CALORIMETER AB Fermilab experiment E-760 light-quark meson spectroscopy data for proton-antiproton annihilation to 3pi0, 2pi0eta, pi02eta, and 3eta in-flight have confirmed the 1500 MeV state at rest seen previously at CERN. Structures above this energy are complex, and preliminary results of amplitude analysis, in progress, for extracting spin quantum numbers show the possibility of nearly degenerate states for some of these structures. C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. INFN,I-44100 FERRARA,ITALY. UNIV FERRARA,I-44100 FERRARA,ITALY. INFN,I-16146 GENOA,ITALY. UNIV GENOA,I-16146 GENOA,ITALY. UNIV CALIF IRVINE,IRVINE,CA 92717. NORTHWESTERN UNIV,EVANSTON,IL 60201. PENN STATE UNIV,UNIVERSITY PK,PA 16802. INFN,I-10125 TURIN,ITALY. UNIV TURIN,I-10125 TURIN,ITALY. RP HASAN, MA (reprint author), PENN STATE UNIV,YORK CAMPUS,YORK,PA 16802, USA. RI Pia, Maria Grazia/C-7034-2012; Sozzi, Marco/H-1674-2011; Luppi, Eleonora/A-4902-2015; Calabrese, Roberto/G-4405-2015; Pallavicini, Marco/G-5500-2012; Gianoli, Alberto/H-5544-2015 OI Pia, Maria Grazia/0000-0002-3579-9639; Sozzi, Marco/0000-0002-2923-1465; Luppi, Eleonora/0000-0002-1072-5633; Calabrese, Roberto/0000-0002-1354-5400; Pallavicini, Marco/0000-0001-7309-3023; Gianoli, Alberto/0000-0002-2456-8667 NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1513 EP 1519 PG 7 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300007 ER PT J AU SADOVSKY, SA DONSKOV, SV INYAKIN, AV KACHANOV, VA KHAUSTOV, GV KULIK, AV LANDSBERG, GL LEDNEV, AA LISHIN, VA POLOVNIKOV, SA POLYAKOV, VA PROKOSHKIN, YD SADOVSKY, SA SAMOYLENKO, VD SHAGIN, PM SHTANNIKOV, AV SINGOVSKY, AV SUGONYAEV, VP BRICMAN, C STROOT, JP BINON, FG BENCHEIKH, B GOUANERE, M KINASHI, T PEIGNEUX, JP POULET, M ADLE, D KNAPP, EA BOUTEMEUR, M BELLAZZINI, R BREZ, A MASSAI, MM TORQUATI, MR INABA, S KOBAYASHI, M TAKAMATSU, K TSURU, T NAKAMURA, T KAWAI, H CHIKOVANI, EG TABIDZE, MD AF SADOVSKY, SA DONSKOV, SV INYAKIN, AV KACHANOV, VA KHAUSTOV, GV KULIK, AV LANDSBERG, GL LEDNEV, AA LISHIN, VA POLOVNIKOV, SA POLYAKOV, VA PROKOSHKIN, YD SADOVSKY, SA SAMOYLENKO, VD SHAGIN, PM SHTANNIKOV, AV SINGOVSKY, AV SUGONYAEV, VP BRICMAN, C STROOT, JP BINON, FG BENCHEIKH, B GOUANERE, M KINASHI, T PEIGNEUX, JP POULET, M ADLE, D KNAPP, EA BOUTEMEUR, M BELLAZZINI, R BREZ, A MASSAI, MM TORQUATI, MR INABA, S KOBAYASHI, M TAKAMATSU, K TSURU, T NAKAMURA, T KAWAI, H CHIKOVANI, EG TABIDZE, MD TI NEW GAMS RESULTS ON MESON SPECTROSCOPY SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID GEV/C-PI; ETA-ETA; OMEGA; COLLISIONS; DECAYS; SYSTEM AB Results on meson spectroscopy obtained in 1993 by the GAMS Collaboration are presented. Model-independent measurements of the omega --> etagamma decay branching ratio, as well as the observation of the X(1740) state in the K(s)0K(s)0 decay mode, are considered. The results on the partial-wave analysis of the omegapi0 and pi0pi0 systems produced at small momentum transfer in pi-p charge-exchange reactions are discussed. The experiments on resonant etaeta-system production on a central region of the pp interaction are also discussed. C1 INST INTERUNIV SCI NUCL,BRUSSELS,BELGIUM. UNIV LIBRE BRUXELLES,B-1050 BRUSSELS,BELGIUM. LAB ANNECY LE VIEUX PHYS PARTICULES,ANNECY LE VIEUX,FRANCE. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. CERN,CH-1211 GENEVA 23,SWITZERLAND. NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 30032,JAPAN. MIYAZAKI UNIV,MIYAZAKI 880,JAPAN. CHIBA UNIV,CHIBA,JAPAN. TBILISI STATE UNIV,INST HIGH ENERGY PHYS,TBILISI,REP OF GEORGIA. UNIV PISA,I-56100 PISA,ITALY. INFN,PISA,ITALY. RP SADOVSKY, SA (reprint author), INST HIGH ENERGY PHYS,PROTVINO,RUSSIA. NR 38 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1526 EP 1535 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300009 ER PT J AU DESWART, JJ RIJKEN, TA TIMMERMANS, R AF DESWART, JJ RIJKEN, TA TIMMERMANS, R TI (P)OVER-BAR-P PARTIAL-WAVE ANALYSIS AND (N)OVER-BAR-N POTENTIALS SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID PBARP ELASTIC-SCATTERING; PROTON-ANTIPROTON SCATTERING; CHARGE-EXCHANGE REACTION; PHASE-SHIFT ANALYSIS; BEAM MOMENTUM RANGE; PBARP->LAMBDA-BAR-LAMBDA REACTION; COUPLING-CONSTANT; MESON-EXCHANGE; NUCLEON-SCATTERING; ANALYZING POWER AB A review is given of the various ways to describe ppBAR scattering. The Nijmegen partial-wave analyses of the ppBAR data, as well as the corresponding Nijmegen NNBAR database, are discussed. These partial-wave analyses are used as a tool to construct a better NNBAR potential model and to clarify questions raised in the literature. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP DESWART, JJ (reprint author), CATHOLIC UNIV NIJMEGEN,INST THEORET PHYS,NIJMEGEN,NETHERLANDS. NR 74 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1547 EP 1556 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300012 ER PT J AU SCHAFER, E AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BEUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T CHUNG, SU COOPER, A CROWE, KM DEGENER, T DIETZ, HP DOMBROVSKI, SV DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, A OULDSAADA, F PETERS, K PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOU, B ZOLL, J ZUPANCIC, C AF SCHAFER, E AMSLER, C ARMSTRONG, DS AUGUSTIN, I BAKER, CA BARNETT, BM BATTY, CJ BEUCHERT, K BIRIEN, P BLUM, P BOSSINGHAM, R BRAUNE, K BROSE, J BUGG, DV BURCHELL, M CASE, T CHUNG, SU COOPER, A CROWE, KM DEGENER, T DIETZ, HP DOMBROVSKI, SV DOSER, M DUNNWEBER, W ENGELHARDT, D ENGLERT, M FAESSLER, MA FELIX, C FOLGER, G HACKMANN, R HADDOCK, RP HEINSIUS, FH HESSEY, NP HIDAS, P ILLINGER, P JAMNIK, D JAVORFI, Z KALINOWSKY, H KAMMLE, B KIEL, T KISIEL, J KLEMPT, E KOBEL, M KOCH, H KOLO, C KONIGSMANN, K KUNZE, M LANDUA, R LUDEMANN, J MATTHAY, H MERKEL, M MERLO, JP MEYER, CA MONTANET, L NOBLE, A OULDSAADA, F PETERS, K PINTER, G RAVNDAL, S SALK, J SANJARI, AH SCHMID, B SCHMIDT, P SPANIER, S STRASSBURGER, C STROHBUSCH, U SUFFERT, M URNER, D VOLCKER, C WALTER, F WALTHER, D WIEDNER, U WINTER, N ZOU, B ZOLL, J ZUPANCIC, C TI PONTECORVO REACTIONS IN P(OVER-BAR)D ANNIHILATIONS AT REST SO PHYSICS OF ATOMIC NUCLEI LA English DT Article; Proceedings Paper CT 2nd Biennial International Workshop on Nucleon-Antinucleon Physics (NAN 93) CY SEP 13-18, 1993 CL INST THEORET & EXPTL PHYS, MOSCOW, RUSSIA SP INST THEORET & EXPTL PHYS, LAB NAZL FRASCATI HO INST THEORET & EXPTL PHYS ID ANTIPROTON ANNIHILATION; DEUTERIUM; STATES; NUCLEI AB The first observation of Pontecorvo reactions of the type pdBAR --> Xn is reported. The outgoing meson is fully reconstructed, and the following preliminary branching ratios are found for antiprotons stopped in liquid deuterium: BR(pdBAR --> pi0n) = (7.31 +/- 0.64) x 10(-6), BR(pdBAR --> etan) = (2.91 +/- 0.44) x 10(-6), BR(pdBAR --> omegan) = (22.6 +/- 5.5) x 10(-6), BR(pdBAR --> eta'n) = (13.5 +/- 4.3) x 10(-6). C1 CERN,DIV PPE,CH-1211 GENEVA 23,SWITZERLAND. UNIV CALIF BERKELEY,LBL,BERKELEY,CA 94720. UNIV BOCHUM,D-44780 BOCHUM,GERMANY. ACAD SCI BUDAPEST,H-1525 BUDAPEST,HUNGARY. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV HAMBURG,D-22761 HAMBURG,GERMANY. UNIV KARLSRUHE,D-76344 KARLSRUHE,GERMANY. QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. UNIV MUNICH,D-85748 MUNICH,GERMANY. CTR RECH NUCL,F-67037 STRASBOURG,FRANCE. UNIV ZURICH,CH-8001 ZURICH,SWITZERLAND. RP SCHAFER, E (reprint author), UNIV MAINZ,D-55099 MAINZ,GERMANY. NR 19 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1063-7788 J9 PHYS ATOM NUCL+ JI Phys. Atom. Nuclei PD SEP PY 1994 VL 57 IS 9 BP 1602 EP 1607 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PL963 UT WOS:A1994PL96300019 ER PT J AU BASARAN, OA DEPAOLI, DW AF BASARAN, OA DEPAOLI, DW TI NONLINEAR OSCILLATIONS OD PENDANT DROPS SO PHYSICS OF FLUIDS LA English DT Article ID ELECTRIC-FIELD; VISCOUS OSCILLATIONS; CAPILLARY BRIDGES; CONDUCTING DROPS; ELEMENT METHOD; LIQUID DROP; STABILITY; DRIVEN; SHAPES; SOLIDIFICATION AB Whereas oscillations of free drops have been scrutinized for over a century, oscillations of supported (pendant or sessile) drops have only received limited attention to date. Here, the focus is on the axisymmetric, free oscillations of arbitrary amplitude of a viscous liquid drop of fixed volume V that is pendant from a solid rod of radius R and is surrounded by a dynamically inactive ambient gas. This nonlinear free boundary problem is solved by a method of lines using Galerkin/finite element analysis for discretization in space and an implicit, adaptive finite difference technique for discretization in time. The dynamics of such nonlinear oscillations are governed by four dimensionless groups: (1) a Reynolds number Re, (2) a gravitational Bond number G, (3) dimensionless drop volume V/R(3) or some other measure of drop size, and (4) a measure of initial drop deformation alb. In contrast to free drops whose frequencies of oscillation omega decrease as the amplitudes of their initial deformations increase, the change in frequency Delta omega of pendant drops with increasing initial deformation is drop size dependent. As the average linear size of pendant drops characterized by V-1/3 becomes large compared to the rod radius, V-1/3/R much greater than 1, Delta omega falls as a/b rises, in accordance with results for free drops. The dynamics of very small drops, i.e., ones for which V-1/3/R much less than 1, however, are profoundly affected by the presence of the solid rod. For such small drops, Delta omega rises as alb rises, a remarkable fact. The results show that for drops of a given size, the frequency is insignificantly affected by viscosity over a wide of range of Reynolds numbers. However, when Re falls below a critical value, the nature of drop motion changes from underdamped oscillations to an aperiodic return to the rest state. Detailed examination of flow fields inside oscillating drops and decomposition of drop shapes into their linear modes supply further insights into the underlying physics. The effect of finite G in modifying the frequencies of oscillations and the rate at which they are damped is also investigated. RP OAK RIDGE NATL LAB, DIV CHEM TECHNOL, OAK RIDGE, TN 37831 USA. NR 65 TC 59 Z9 61 U1 2 U2 12 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 SEP PY 1994 VL 6 IS 9 BP 2923 EP 2943 DI 10.1063/1.868120 PG 21 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA PF980 UT WOS:A1994PF98000021 ER PT J AU MOSS, WC CLARKE, DB WHITE, JW YOUNG, DA AF MOSS, WC CLARKE, DB WHITE, JW YOUNG, DA TI HYDRODYNAMIC SIMULATIONS OF BUBBLE COLLAPSE AND PICOSECOND SONOLUMINESCENCE SO PHYSICS OF FLUIDS LA English DT Article AB Numerical hydrodynamic simulations of the growth and collapse of a 10 mu m air bubble in water were performed. Both the air and the water are treated as compressible fluids. The calculations show that the collapse is nearly isentropic until the final 10 ns, after which a strong spherically converging shock wave evolves and creates enormous temperatures and pressures in the inner 0.02 mu m of the bubble. The reflection of the shock from the center of the bubble produces a diverging shock wave that quenches the high temperatures (>30 eV) and pressures in less than 10 ps (full width at half maximum). The picosecond pulse widths are due primarily to spherical convergence/divergence and nonlinear stiffening of the air equation of state that occurs at high pressures. The results are consistent with recent measurements of sonoluminescence that had optical pulse widths less than 50 ps and 30 mW peak radiated power in the visible. RP MOSS, WC (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 27 TC 181 Z9 185 U1 4 U2 12 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD SEP PY 1994 VL 6 IS 9 BP 2979 EP 2985 DI 10.1063/1.868124 PG 7 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA PF980 UT WOS:A1994PF98000025 ER PT J AU OHERN, TJ AF OHERN, TJ TI GALLERY OF FLUID MOTION SO PHYSICS OF FLUIDS LA English DT Editorial Material ID OBLIQUE WAVE RESONANCE; FAR WAKE RP SANDIA NATL LABS, CTR ENGN SCI, MS0834, ALBUQUERQUE, NM 87185 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 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 SEP PY 1994 VL 6 IS 9 BP S1 EP S1 PG 1 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA PF980 UT WOS:A1994PF98000001 ER PT J AU SHAW, LL MUELDER, SA BAUM, DW WINER, KA AF SHAW, LL MUELDER, SA BAUM, DW WINER, KA TI HYPERVELOCITY EXPLOSIVE-DRIVEN METAL JET IN AIR SO PHYSICS OF FLUIDS LA English DT Note RP SHAW, LL (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD SEP PY 1994 VL 6 IS 9 BP S10 EP S10 PG 1 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA PF980 UT WOS:A1994PF98000010 ER PT J AU HAHM, TS AF HAHM, TS TI ROTATION SHEAR-INDUCED FLUCTUATION DECORRELATION IN A TOROIDAL PLASMA SO PHYSICS OF PLASMAS LA English DT Article ID L-H TRANSITION; POLOIDAL ROTATION; TURBULENT FLUCTUATIONS; EDGE TURBULENCE; ELECTRIC-FIELD; TOKAMAK; SUPPRESSION AB The enhanced decorrelation of fluctuations by the combined effects of the ExB flow (V(E)) shear, the parallel flow (V(parallel-to)) shear, and the magnetic shear is studied in toroidal geometry. A two-point nonlinear analysis previously utilized in a cylindrical model [Phys. Fluids B 2, 1 (1990)] shows that the reduction of the radial correlation length below its ambient turbulence value (DELTAr0) is characterized by the ratio between the shearing rate omega(s), and the ambient turbulence scattering rate DELTAomega(T). The derived shearing rate is given by omega(s)2 = (DELTAr0)2[(1/DELTAphi2){(partial derivative/partial derivative r)(qV(E)/r)}2 +(1/DELTAeta2){(partial derivative/partial derivative r)(V(parallel-to)/qR)}2], where DELTAphi and DELTAeta are the correlation angles of the ambient turbulence along the toroidal and parallel directions. This result deviates significantly from the cylindrical result for high magnetic shear or for ballooning-like fluctuations. For suppression of flute-like fluctuations, only the radial shear of qV(E)/r contributes, and the radial shear of V(parallel-to)/qR is irrelevant regardless of the plasma rotation direction. RP PRINCETON UNIV, PLASMA PHYS LAB, PRINCETON, NJ 08543 USA. NR 16 TC 78 Z9 78 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 SEP PY 1994 VL 1 IS 9 BP 2940 EP 2944 DI 10.1063/1.870534 PG 5 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700017 ER PT J AU PHILLION, DW POLLAINE, SM AF PHILLION, DW POLLAINE, SM TI DYNAMICAL COMPENSATION OF IRRADIATION NONUNIFORMITIES IN A SPHERICAL HOHLRAUM ILLUMINATED WITH TETRAHEDRAL SYMMETRY BY LASER-BEAMS SO PHYSICS OF PLASMAS LA English DT Article ID X-RAY GENERATION; 1.3-MU-M; LIGHT; CONFINEMENT; RADIATION; TARGETS AB Indirect-drive inertial confinement fusion with laser beams requires focusing the beams through laser entrance holes (LEHs) onto the inside surface of the hi-Z case comprising the hohlraum. The problem is how to illuminate the hohlraum so that the x-ray flux upon the capsule is as highly symmetric as possible at all times. This approach involves putting four LEHs at the comers of an imaginary regular tetrahedron whose vertices lie on the spherical hohlraum and putting a multiple of three beams through each LEH. Strict tetrahedral symmetry is maintained, so that under any proper tetrahedral symmetry operation, beam cones map into beam cones and LEHs into LEHs. The radiation field can have no l = 1, 2, or 5 spherical harmonic components. By using two sets of twelve beams with different pulse shapes, the single surviving l = 3 and single surviving l = 4 components of the radiation flux upon the capsule can be made to vanish at all times. RP PHILLION, DW (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 13 TC 26 Z9 26 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 2963 EP 2975 DI 10.1063/1.870537 PG 13 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700020 ER PT J AU HINKEL, DE WILLIAMS, EA BERGER, RL AF HINKEL, DE WILLIAMS, EA BERGER, RL TI TEMPORAL EVOLUTION OF STIMULATED BRILLOUIN BACKSCATTER SO PHYSICS OF PLASMAS LA English DT Article ID PARAMETRIC-INSTABILITIES; SCATTERING; PLASMA; SPACE AB A qualitative understanding of the time dependence of stimulated Brillouin scattering (SBS) provides estimates of the amount of temporal growth that occurs in current inertial confinement fusion and short laser pulse interaction experiments when the growth is limited by the length of the experiment or by motion of the ''hot spots'' of the laser intensity pattern induced by beam smoothing. In the weak coupling limit, the instantaneous growth rate depends upon the plasma initial conditions early in time, is proportional to t-1/2 later in time, and asymptotically approaches the absolute growth rate (in the absence of damping). When the instability is strongly coupled, the growth rate depends upon the plasma initial conditions early in time but is proportional to t-1/3 later in time. When the growth rate drops to a value comparable to that of the ion acoustic frequency, the instability becomes effectively weakly coupled. The effects of damping are also discussed. RP HINKEL, DE (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 18 TC 25 Z9 25 U1 1 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 2987 EP 3002 DI 10.1063/1.870539 PG 16 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700022 ER PT J AU YANG, TYB ARONS, J LANGDON, AB AF YANG, TYB ARONS, J LANGDON, AB TI EVOLUTION OF THE WEIBEL INSTABILITY IN RELATIVISTICALLY HOT-ELECTRON POSITRON PLASMAS SO PHYSICS OF PLASMAS LA English DT Article ID CRAB-NEBULA; SHOCKS AB Analytical and numerical studies of the evolution of the Weibel instability in relativistically hot electron-positron plasmas are presented. Appropriate perturbations on the electromagnetic fields and the particle orbits, corresponding to a single unstable mode, are determined analytically and used as initial conditions in the numerical simulations to excite a single unstable mode. A simple estimate of the saturation amplitude is also obtained analytically. Numerical simulations are carried out when a single unstable mode is favorably excited. Comparisons of the simulation results with the analytical ones show very good agreement. Also observed in the simulations are mode competition, mode suppression, and the difference in the long-term evolution between the magnetized and unmagnetized plasmas. For relativistic unmagnetized plasmas, energy-like global constraints, which are conservation laws in addition to the conservation of energy and momentum, are derived. Numerical simulations of the multimode evolution are described. Simulation results show growth in electromagnetic energy in the early stage, a narrowing in the bandwidth and a shift in the peak of the spectrum to longer wavelength in the subsequent evolution, and a decrease in the temperature anisotropy. In a simulation for an unmagnetized plasma, it is observed that the system reaches a steady state halfway through the simulation. In contrast, the peak of the spectrum continues to shift to lower wave number k, and the temperature anisotropy continues to decrease during the entire simulation for a magnetized plasma. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. LAWRENCE LIVERMORE NATL LAB,X DIV,LIVERMORE,CA 94551. LAWRENCE LIVERMORE NATL LAB,PLASMA PHYS RES INST,LIVERMORE,CA 94551. LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY PHYS,LIVERMORE,CA 94551. RP YANG, TYB (reprint author), UNIV CALIF BERKELEY,CTR THEORET ASTROPHYS,601 CAMPBELL HALL,BERKELEY,CA 94720, USA. NR 21 TC 52 Z9 53 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 3059 EP 3077 DI 10.1063/1.870498 PG 19 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700029 ER PT J AU DAVIDSON, RC QIAN, Q AF DAVIDSON, RC QIAN, Q TI PHASE ADVANCE FOR AN INTENSE CHARGED-PARTICLE BEAM PROPAGATING THROUGH A PERIODIC QUADRUPOLE FOCUSING FIELD IN THE SMOOTH-BEAM APPROXIMATION SO PHYSICS OF PLASMAS LA English DT Article AB The envelope equations for a uniform-density Kapchinskij-Vladimirskij (KV) beam equilibrium are used to derive a transcendental equation for the phase advance of an intense charged particle beam propagating through a periodic quadrupole focusing lattice, kappa(q)(S) = kappa(q)(s + S). The analysis is carried out for the case of a matched beam in the smooth-beam approximation, and precise estimates of the phase advance are obtained for a wide range of system parameters and choices of lattice function kappa(q)(s). Introducing the quadratic measure, sigma0(2)/S2 = [[integral-s/s0ds kappa(q)(s)]2], of the average quadrupole focusing field squared, a detailed analysis of the transcendental equation for the phase advance sigma is used to quantify the range of validity of the approximate estimate of the phase advance obtained from the simple quadratic equation (sigma/S)2 + (K/epsilon)(sigma/S) = (sigma0/S)2. Here, sigma = epsilonS/r(b)2BAR is the phase advance for a circular beam with average radiUS r(b)BAR, epsilon is the unnormalized beam emittance, S is the periodicity length of the lattice, and K is the self-field perveance. For sigma0 less than or similar to 30-degrees, it is found that the (approximate) quadratic expression for sigma gives an excellent estimate of the phase advance over the entire range of KS/epsilon, and the quadratic estimate for sigma is accurate to within 5% for values of sigma0 approaching sigma0 = 60-degrees. RP DAVIDSON, RC (reprint author), PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08543, USA. NR 18 TC 14 Z9 14 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 3104 EP 3114 DI 10.1063/1.870502 PG 11 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700033 ER PT J AU BLACK, DC MAYO, RM GERWIN, RA SCHOENBERG, KF SCHEUER, JT HOYT, RP HENINS, I AF BLACK, DC MAYO, RM GERWIN, RA SCHOENBERG, KF SCHEUER, JT HOYT, RP HENINS, I TI 2-DIMENSIONAL MAGNETIC-FIELD EVOLUTION MEASUREMENTS AND PLASMA-FLOW SPEED ESTIMATES FROM THE COAXIAL THRUSTER EXPERIMENT SO PHYSICS OF PLASMAS LA English DT Article ID SPHEROMAKS AB Local, time-dependent magnetic field measurements have been made in the Los Alamos coaxial thruster experiment (CTX) [C. W. Barnes et al., Phys. Fluids B 2, 1871 (1990); J. C. Fernandez et al, Nucl. Fusion 28, 1555 (1988)] using a 24 coil magnetic probe array (eight spatial positions, three axis probes). The CTX is a magnetized, coaxial plasma gun presently being used to investigate the viability of high pulsed power plasma thrusters for advanced electric propulsion. Previous efforts on this device have indicated that high pulsed power plasma guns are attractive candidates for advanced propulsion that employ ideal magnetohydrodynamic (MHD) plasma stream flow through self-formed magnetic nozzles. Indirect evidence of magnetic nozzle formation was obtained from plasma gun performance and measurements of directed axial velocities up to upsilon(z) approximately 10(7) cm/s. The purpose of this work is to make direct measurement of the time evolving magnetic field topology. The intent is to both identify that applied magnetic field distortion by the highly conductive plasma is occurring, and to provide insight into the details of discharge evolution. Data from a magnetic fluctuation probe array have been used to investigate the details of applied magnetic field deformation through the reconstruction of time-dependent flux profiles. Experimentally observed magnetic field line distortion has been compared to that predicted by a simple one-dimensional (1-D) model of the discharge channel. Such a comparison is utilized to estimate the axial plasma velocity in the thruster. Velocities determined in this manner are in approximate agreement with the predicted self-field magnetosonic speed and those measured by a time-of-flight spectrometer. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP BLACK, DC (reprint author), N CAROLINA STATE UNIV,DEPT NUCL ENGN,RALEIGH,NC 27695, USA. NR 8 TC 9 Z9 9 U1 1 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 3115 EP 3131 DI 10.1063/1.870503 PG 17 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700034 ER PT J AU ZWEBEN, SJ DARROW, DS HERRMANN, H BELL, M BOIVIN, R BUDNY, RV BUSH, CE CHANG, CS CHENG, CZ ERNST, D FREDRICKSON, ED HAMMETT, G JOHNSON, LC MCCUNE, D MURAKAMI, M MYNICK, HE OWENS, DK PARK, J PHILLIPS, CK REDI, MH SCHIVELL, J SCOTT, S STRACHAN, J TAYLOR, G TUSZEWSKI, M WHITE, RB WILSON, JR ZARNSTORFF, M AF ZWEBEN, SJ DARROW, DS HERRMANN, H BELL, M BOIVIN, R BUDNY, RV BUSH, CE CHANG, CS CHENG, CZ ERNST, D FREDRICKSON, ED HAMMETT, G JOHNSON, LC MCCUNE, D MURAKAMI, M MYNICK, HE OWENS, DK PARK, J PHILLIPS, CK REDI, MH SCHIVELL, J SCOTT, S STRACHAN, J TAYLOR, G TUSZEWSKI, M WHITE, RB WILSON, JR ZARNSTORFF, M TI ANOMALOUS LOSSES OF DEUTERIUM-DEUTERIUM FUSION PRODUCTS IN THE TOKAMAK FUSION TEST REACTOR (VOL 1, PG 1469, 1994) SO PHYSICS OF PLASMAS LA English DT Correction, Addition RP ZWEBEN, SJ (reprint author), PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. RI Hammett, Gregory/D-1365-2011; Ernst, Darin/A-1487-2010; White, Roscoe/D-1773-2013 OI Hammett, Gregory/0000-0003-1495-6647; Ernst, Darin/0000-0002-9577-2809; White, Roscoe/0000-0002-4239-2685 NR 1 TC 0 Z9 0 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD SEP PY 1994 VL 1 IS 9 BP 3138 EP 3138 DI 10.1063/1.870506 PG 1 WC Physics, Fluids & Plasmas SC Physics GA PG357 UT WOS:A1994PG35700038 ER PT J AU BLANTER, YM KAGANOV, MI PANTSULAYA, AV VARLAMOV, AA AF BLANTER, YM KAGANOV, MI PANTSULAYA, AV VARLAMOV, AA TI THE THEORY OF ELECTRONIC TOPOLOGICAL TRANSITIONS SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID SUB-BAND STRUCTURE; MUON KNIGHT-SHIFT; S-D TRANSITION; LA-TH ALLOYS; FERMI-SURFACE; THERMOELECTRIC-POWER; PHASE-TRANSITION; MG ALLOYS; ELASTIC PROPERTIES; THERMAL-EXPANSION AB In the present review an attempt to survey all the theory of electronic topological transitions from the very first papers until the recent achievements is made. The presentation is started from the description of possible topological singularities in electronic sprectra of metals. Then the singularities of thermodynamical and transport properties of a metal in the vicinity of ETT, their fluctuations are discussed in details. In purpose to attract the wide readers audience, the transport phenomena including the behaviour of conductivity, thermoelectric power and sound absorption coefficient in the vicinity of ETT are discussed in the framework of simple Boltzmann equation approach. The last chapters of the review are devoted to the discussion of the modern problems of E?T theory, application of it to the study of properties of 2D systems, quantum oscillations in magnetic field, generalized topological transitions. The review is supplied by the extensive and complete bibliography including arround 300 references. C1 RUSSIAN ACAD SCI, PL KAPITZA PHYS PROBLEMS INST, MOSCOW 117973, RUSSIA. ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA. RP BLANTER, YM (reprint author), MOSCOW STEEL & ALLOYS INST, LENINSKI PROSPEKT 4, MOSCOW 117936, RUSSIA. NR 308 TC 144 Z9 147 U1 2 U2 19 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD SEP PY 1994 VL 245 IS 4 BP 159 EP 257 DI 10.1016/0370-1573(94)90103-1 PG 99 WC Physics, Multidisciplinary SC Physics GA PJ290 UT WOS:A1994PJ29000001 ER PT J AU NEUBERT, M AF NEUBERT, M TI HEAVY-QUARK SYMMETRY SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID QCD SUM-RULES; EFFECTIVE FIELD-THEORY; MESON FORM-FACTORS; ISGUR-WISE FUNCTION; INTERMEDIATE MOMENTUM-TRANSFER; DIFFERENTIAL-EQUATIONS METHOD; 2ND-ORDER POWER CORRECTIONS; KOBAYASHI-MASKAWA MATRIX; SHORT-DISTANCE EXPANSION; ABELIAN GAUGE THEORIES AB We review the current status of heavy-quark symmetry and its applications to weak decays of hadrons containing a single heavy quark. After an introduction to the underlying physical ideas, we discuss in detail the formalism of the heavy-quark effective theory, including a comprehensive treatment of symmetry breaking corrections. We then illustrate some nonperturbative approaches, which aim at a dynamical, QCD-based calculation of the universal form factors of the effective theory. The main focus is on results obtained using QCD sum rules. Finally, we perform an essentially model-independent analysis of semileptonic B meson decays in the context of the heavy-quark effective theory. C1 STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94309 USA. NR 232 TC 1020 Z9 1021 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 EI 1873-6270 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD SEP PY 1994 VL 245 IS 5-6 BP 259 EP 395 DI 10.1016/0370-1573(94)90091-4 PG 137 WC Physics, Multidisciplinary SC Physics GA PJ907 UT WOS:A1994PJ90700001 ER PT J AU CASTEN, RF BOND, PD AF CASTEN, RF BOND, PD TI WARBURTON,ERNEST,KEELING SO PHYSICS TODAY LA English DT Item About an Individual RP CASTEN, RF (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1994 VL 47 IS 9 BP 116 EP 117 DI 10.1063/1.2808650 PG 2 WC Physics, Multidisciplinary SC Physics GA PG210 UT WOS:A1994PG21000023 ER PT J AU STONE, JL AF STONE, JL TI PHOTOVOLTAICS PROMISE STILL LESS-THAN SUNNY - REPLY SO PHYSICS TODAY LA English DT Letter RP STONE, JL (reprint author), NATL RENEWABLE ENERGY LAB,GOLDEN,CO, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0031-9228 J9 PHYS TODAY JI Phys. Today PD SEP PY 1994 VL 47 IS 9 BP 127 EP & PG 0 WC Physics, Multidisciplinary SC Physics GA PG210 UT WOS:A1994PG21000032 ER PT J AU ARTUS, NN NAITO, S SOMERVILLE, CR AF ARTUS, NN NAITO, S SOMERVILLE, CR TI A MUTANT OF ARABIDOPSIS-THALIANA THAT DEFINES A NEW LOCUS FOR GLYCINE DECARBOXYLATION SO PLANT AND CELL PHYSIOLOGY LA English DT Article DE ARABIDOPSIS THALIANA; GLD1; GLD2; GLYCINE DECARBOXYLASE; MUTANT; PHOTORESPIRATION ID POLYMORPHISM LINKAGE MAP; PEA LEAF MITOCHONDRIA; MULTIENZYME COMPLEX; CLEAVAGE SYSTEM; PISUM-SATIVUM; H-PROTEIN; CLONING; PHOTORESPIRATION; PURIFICATION; EXPRESSION AB A novel photorespiratory mutant of Arabidopsis thaliana, designated gld2, was isolated based on a growth requirement for abnormally high levels of atmospheric CO2. Photosynthetic CO2 fixation was inhibited in the mutant following illumination in air but not in atmosphere containing 2% O-2. Photosynthetic assimilation of (CO2)-C-14 in an atmosphere containing 50% O-2 resulted in accumulation of 48% of the soluble label in glycine in the mutant compared to 9% in the wild type. The rate of glycine decarboxylation by isolated mitochondria from the mutant was reduced to 6% of the wild type rate. In genetic crosses, the mutant complemented two previously described photorespiratory mutants of A. thaliana that accumulate glycine during photosynthesis in air due to defects in glycine decarboxylase (glyD, now designated gld1) and serine transhydroxymethylase (stm). Because glycine decarboxylase is a complex of four enzymes, these results are consistent with a mutation in a glycine decarboxylase subunit other than that affected in the gld1 mutant. The two gld loci were mapped to chromosomes 2 and 5, respectively. C1 UNIV TOKYO,MOLEC GENET RES LAB,TOKYO 113,JAPAN. RP ARTUS, NN (reprint author), MICHIGAN STATE UNIV,US DOE,DEPT CROP & SOIL SCI,PLANT RES LAB,E LANSING,MI 48824, USA. RI Somerville, Christopher/A-4048-2009 OI Somerville, Christopher/0000-0003-4647-0094 NR 31 TC 12 Z9 12 U1 1 U2 1 PU JAPANESE SOC PLANT PHYSIOLOGISTS PI KYOTO PA SHIMOTACHIURI OGAWA HIGASHI KAMIKYOKU, KYOTO 602, JAPAN SN 0032-0781 J9 PLANT CELL PHYSIOL JI Plant Cell Physiol. PD SEP PY 1994 VL 35 IS 6 BP 879 EP 885 PG 7 WC Plant Sciences; Cell Biology SC Plant Sciences; Cell Biology GA PG350 UT WOS:A1994PG35000004 ER PT J AU BENNETT, MJ CHOE, S EISENBERG, D AF BENNETT, MJ CHOE, S EISENBERG, D TI REFINED STRUCTURE OF DIMERIC DIPHTHERIA-TOXIN AT 2.0-ANGSTROM RESOLUTION SO PROTEIN SCIENCE LA English DT Article DE ADP-RIBOSYLTRANSFERASE; DIPHTHERIA; MEMBRANE INSERTION ID BETA-SHEET CONFORMATION; AERUGINOSA EXOTOXIN-A; NAD BINDING-SITE; ACTIVE-SITE; PSEUDOMONAS-AERUGINOSA; CRYSTAL-STRUCTURE; 3-DIMENSIONAL STRUCTURE; GLOBULAR-PROTEINS; ATOMIC RESOLUTION; CYSTINE PEPTIDES AB The refined structure of dimeric diphtheria toxin (DT) at 2.0 Angstrom resolution, based on 37,727 unique reflections (F> 1 sigma(F)), yields a final R factor of 19.5% with a model obeying standard geometry. The refined model consists of 523 amino acid residues, 1 molecule of the bound dinucleotide inhibitor adenylyl 3'-5' uridine 3' monophosphate (ApUp), and 405 well-ordered water molecules. The 2.0-Angstrom refined model reveals that the binding motif for ApUp includes residues in the catalytic and receptor-binding domains and is different from the Rossmann dinucleotide-binding fold. ApUp is bound in part by a long loop (residues 34-52) that crosses the active site. Several residues in the active site were previously identified as NAD-binding residues. Glu 148, previously identified as playing a catalytic role in ADP-ribosylation of elongation factor 2 by DT, is about 5 Angstrom from uracil in ApUp. The trigger for insertion of the transmembrane domain of DT into the endosomal membrane at low pH may involve 3 intradomain and 4 interdomain salt bridges that will be weakened at low pH by protonation of their acidic residues. The refined model also reveals that each molecule in dimeric DT has an ''open'' structure unlike most globular proteins, which we call an open monomer. Two open monomers interact by ''domain swapping'' to form a compact, globular dimeric DT structure. The possibility that the open monomer resembles a membrane insertion intermediate is discussed. C1 UNIV CALIF LOS ANGELES,INST MOLEC BIOL,DEPT CHEM & BIOCHEM,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,UCLA DOE,STRUCT BIOL & MOLEC MED LAB,LOS ANGELES,CA 90024. NR 78 TC 138 Z9 139 U1 0 U2 6 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD SEP PY 1994 VL 3 IS 9 BP 1444 EP 1463 PG 20 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PK830 UT WOS:A1994PK83000011 PM 7833807 ER PT J AU BENNETT, MJ EISENBERG, D AF BENNETT, MJ EISENBERG, D TI REFINED STRUCTURE OF MONOMERIC DIPHTHERIA-TOXIN AT 2.3-ANGSTROM RESOLUTION SO PROTEIN SCIENCE LA English DT Article DE ADP-RIBOSYLTRANSFERASE; DIPHTHERIA; MEMBRANE INSERTION; RECEPTOR RECOGNITION ID MEMBRANE TRANSLOCATION; FRAGMENT; CRYSTALS; PROTEINS; RECEPTOR; BINDING; CYTOSOL; ENTRY; CELL AB The structure of toxic monomeric diphtheria toxin (DT) was determined at 2.3 A resolution by molecular replacement based on the domain structures in dimeric DT and refined to an R factor of 20.7%. The model consists of 2 monomers in the asymmetric unit (1,046 amino acid residues), including 2 bound adenylyl 3'-5' uridine 3' monophosphate molecules and 396 water molecules. The structures of the 3 domains are virtually identical in monomeric and dimeric DT; however, monomeric DT is compact and globular as compared to the ''open'' monomer within dimeric DT (Bennett MJ, Choe S, Eisenberg D, 1994b, Protein Sci 3:0000-0000). Detailed differences between monomeric and dimeric DT are described, particularly (1) changes in main-chain conformations of 8 residues acting as a hinge to ''open'' or ''close'' the receptor-binding (R) domain, and (2) a possible receptor-docking site, a beta-hairpin loop protruding from the R domain containing residues that bind the cell-surface DT receptor. Based on the monomeric and dimeric DT crystal structures we have determined and the solution studies of others, we present a 5-step structure-based mechanism of intoxication: (1) proteolysis of a disulfide-linked surface loop (residues 186-201) between the catalytic (C) and transmembrane (T) domains; (2) binding of a beta-hairpin loop protruding from the R domain to the DT receptor, leading to receptor-mediated endocytosis; (3) low pH-triggered open monomer formation and exposure of apolar surfaces in the T domain, which insert into the endosomal membrane; (4) translocation of the C domain into the cytosol; and (5) catalysis by the C domain of ADP-ribosylation of elongation factor 2. C1 UNIV CALIF LOS ANGELES,INST MOLEC BIOL,DEPT CHEM & BIOCHEM,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,UCLA DOE,STRUCT BIOL & MOLEC MED LAB,LOS ANGELES,CA 90024. NR 34 TC 148 Z9 148 U1 0 U2 3 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0961-8368 J9 PROTEIN SCI JI Protein Sci. PD SEP PY 1994 VL 3 IS 9 BP 1464 EP 1475 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PK830 UT WOS:A1994PK83000012 PM 7833808 ER PT J AU SAUER, MC JONAH, CD AF SAUER, MC JONAH, CD TI THE RATIO OF TRIPLET TO SINGLET EXCITED-STATE FORMATION FROM ION RECOMBINATION IN THE RADIOLYSIS OF AROMATIC SOLUTES IN ALKANE LIQUIDS SO RADIATION PHYSICS AND CHEMISTRY LA English DT Article ID ELECTRON-SPIN-RESONANCE; IRRADIATED CYCLOHEXANE SOLUTIONS; PICOSECOND PULSE-RADIOLYSIS; HIGH-ENERGY ELECTRONS; RADICAL-CATIONS; TEMPERATURE-DEPENDENCE; SATURATED-HYDROCARBONS; COMPUTER-SIMULATION; NONPOLAR LIQUIDS; QUANTUM YIELDS AB The rates of formation of solute triplet and excited singlet states as a function of time have been measured over the first 70 ns in the pulse radiolysis of isooctane, cyclohexane, and n-hexane solutions. At 0.1 M solute (naphthalene or biphenyl), the fraction of the solute excited states formed by ion-recombination that are triplet is determined to be 0.5 +/- 0.1 in the time regime 2 to 70 ns. A similar value is obtained from analysis of the time profile of the triplet state of naphthalene for concentrations from 0.001 to 0.1 M in the same solvents. The implications of these results with respect to the nonhomogeneous ion recombination processes occurring are discussed. The decay rate of the solute radical anion has also been determined, and the relationship between it and the rate of solute excited state formation has been analyzed. RP SAUER, MC (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 83 TC 14 Z9 14 U1 3 U2 9 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-5724 J9 RADIAT PHYS CHEM JI Radiat. Phys. Chem. PD SEP PY 1994 VL 44 IS 3 BP 281 EP 295 DI 10.1016/0969-806X(94)90006-X PG 15 WC Chemistry, Physical; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical SC Chemistry; Nuclear Science & Technology; Physics GA NL474 UT WOS:A1994NL47400006 ER PT J AU YOSHIDA, H HETTICH, RL AF YOSHIDA, H HETTICH, RL TI CHARACTERIZATION OF RADIATION-INDUCED PRODUCTS OF THYMIDINE 3'-MONOPHOSPHATE AND THYMIDYLYL (3'-]5') THYMIDINE BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY AND LASER-DESORPTION FOURIER-TRANSFORM MASS-SPECTROMETRY SO RADIATION RESEARCH LA English DT Article ID INDUCED DEGRADATION PRODUCTS; ELECTRON-SPIN-RESONANCE; AQUEOUS-SOLUTION; DEOXYRIBONUCLEIC-ACID; IONIZING-RADIATION; GAMMA-IRRADIATION; BASE DAMAGE; DNA; THYMINE; OLIGONUCLEOTIDES AB High-performance liquid chromatography (HPLC) and laser-desorption Fourier-transform mass spectrometry (LD FTMS) have been applied for direct measurements of radiation-induced products of nucleic acid constituents containing thymidine. Laser desorption FTMS could be used for the direct detection (neither hydrolyzed nor derivatized) of X ray-induced decomposition products of aqueous thymidine monophosphate. After these initial experiments, a variety of hydrogenated and hydroxylated thymine standards were acquired and examined by FTMS to assist in the identification of unknown radiation-induced decomposition products of thymine-containing nucleotides and dinucleotides. To extend these studies to dinucleotides, the radiation-induced products generated by the gamma radiolysis of thymidylyl (3'-->5') thymidine (TpT) were isolated by reverse-phase HPLC and identified by LD FTMS. Thymine and thymidine 5'-monophosphate were observed as the major products in this case. Several of the minor products of the HPLC profile were pooled in a single fraction and characterized simultaneously by LD FTMS. The resulting mass spectra indicated the presence of hydroxy-5,6-dihydrothymidine monophosphate, 5,6-dihydrothymidine monophosphate and thymidine monophosphate, thymine glycol, hydroxy-5,6-dihydrothymine, 5-hydroxy-methyluracil and 5,6-dihydrothymine. The combination of HPLC purification and LD FTMS structural characterization provides a useful tool for the direct measurement of radiation-induced products of nucleotides and dinucleotides. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RI Hettich, Robert/N-1458-2016 OI Hettich, Robert/0000-0001-7708-786X NR 28 TC 5 Z9 5 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD SEP PY 1994 VL 139 IS 3 BP 271 EP 279 DI 10.2307/3578824 PG 9 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA PE751 UT WOS:A1994PE75100002 PM 8073109 ER PT J AU BADHWAR, GD CUCINOTTA, FA BRABY, LA KONRADI, A AF BADHWAR, GD CUCINOTTA, FA BRABY, LA KONRADI, A TI MEASUREMENTS ON THE SHUTTLE OF THE LET SPECTRA OF GALACTIC COSMIC-RADIATION AND COMPARISON WITH THE RADIATION TRANSPORT MODEL SO RADIATION RESEARCH LA English DT Article AB A new class of tissue-equivalent proportional counters has been flown on two space shuttle flights. These detectors and their associated electronics cover a lineal energy range from 0.4 to 1250 keV/mu m with a multichannel analyzer resolution of 0.1 keV/mu m from 0.4 to 20 keV/mu m and 5 keV/mu m from 20 to 1250 keV/mu m. These detectors provide the most complete dynamic range and highest resolution of any technique currently in use. On one mission, one detector was mounted in the Shuttle payload bay and another older model in the mid-deck, thus providing information on the depth dependence of the lineal energy spectrum. A detailed comparison of the observed lineal energy and calculated LET spectra for galactic cosmic radiation shows that, although the radiation transport models provide a rather accurate description of the dose (+/-15%) and equivalent dose (+/-15%), the calculations significantly underestimate the frequency of events below about 100 keV/mu m. This difference cannot be explained by the inclusion of the contribution of splash protons. The contribution of the secondary pions, kaons and electrons produced in the Shuttle shielding, if included in the radiation transport model, may explain these differences. There are also significant differences between the model predictions and observations above 140 keV/mu m, particularly for 28.5 degrees inclination orbit. C1 NASA, LANGLEY RES CTR, HAMPTON, VA 23681 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP BADHWAR, GD (reprint author), NASA, LYNDON B JOHNSON SPACE CTR, HOUSTON, TX 77058 USA. NR 24 TC 52 Z9 53 U1 0 U2 2 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD SEP PY 1994 VL 139 IS 3 BP 344 EP 351 DI 10.2307/3578832 PG 8 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA PE751 UT WOS:A1994PE75100010 PM 8073117 ER PT J AU MORRIS, GM CODERRE, JA HOPEWELL, JW MICCA, PL NAWROCKY, MM LIU, HYB BYWATERS, A AF MORRIS, GM CODERRE, JA HOPEWELL, JW MICCA, PL NAWROCKY, MM LIU, HYB BYWATERS, A TI RESPONSE OF THE CENTRAL-NERVOUS-SYSTEM TO BORON NEUTRON-CAPTURE IRRADIATION - EVALUATION USING RAT SPINAL-CORD MODEL SO RADIOTHERAPY AND ONCOLOGY LA English DT Article DE BNCT; BOROCAPTATE SODIUM; P-BORONOPHENYLALANINE; SPINAL CORD TOLERANCE; RBE; COMPOUND BIOLOGICAL EFFECTIVENESS FACTOR ID X-RAYS; THERAPY; SINGLE; BORONOPHENYLALANINE; GLIOSARCOMAS; MELANOMA; REPAIR; DAMAGE; RBE AB The response of the central nervous system to boron neutron capture irradiation, with either p-boronophenylalanine (BPA) or borocaptate sodium (BSH) as neutron capture agents, has been assessed using a rat spinal cord model. The mean latency times for the development of myelopathy after irradiation with the thermal neutron beam-alone, or in combination with BPA or BSH, were 23.7 +/- 0.3, 21.8 +/- 0.4 and 19.6 +/- 0.4 weeks, respectively. The radiation-induced lesion in the spinal cord was characterised by white matter necrosis. Due to the variations in the microdistribution of different neutron capture agents in body tissues, it was considered inappropriate to define the biological effectiveness of the high LET radiation, resulting from the B-10(n,alpha)Li-7 neutron capture reaction, relative to photon radiation, using the term 'relative biological effectiveness' (RBE). The term 'compound biological effectiveness' (CBE) factor was used as an alternative. ED(50) values for the various irradiation modalities were calculated from probit fitted dose effect curves. Expressed as total physical absorbed doses these values were 13.6 +/- 0.4, 30.3 +/- 2.7 and 13.8 +/- 0.5 Gy after irradiation with the thermal neutron beam alone, or the thermal neutron beam in combination with BSH or BPA, respectively. The RBE of the thermal neutron beam was 1.4 +/- 0.04. The microdistribution of the two neutron capture agents played a crucial role in the determination of the overall biological effect, after thermal neutron activation. BSH, which is excluded from the CNS parenchyma by the blood brain barrier, had a low CBE factor value of 0.46 +/- 0.5. BPA, on the other hand, which crosses the blood brain barrier and distributes in the CNS parenchyma, had a higher CBE factor value of 1.33 +/- 0.16. C1 BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973. RP MORRIS, GM (reprint author), UNIV OXFORD,CHURCHILL HOSP,RES INST,CRC,NORMAN TISSUE RADIOBIOL RES GRP,S PARKS RD,OXFORD OX3 7LJ,ENGLAND. NR 29 TC 60 Z9 62 U1 0 U2 4 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0167-8140 J9 RADIOTHER ONCOL JI Radiother. Oncol. PD SEP PY 1994 VL 32 IS 3 BP 249 EP 255 DI 10.1016/0167-8140(94)90024-8 PG 7 WC Oncology; Radiology, Nuclear Medicine & Medical Imaging SC Oncology; Radiology, Nuclear Medicine & Medical Imaging GA PR963 UT WOS:A1994PR96300008 PM 7816943 ER PT J AU TANG, K TARANENKO, NI ALLMAN, SL CHEN, CH CHANG, LY JACOBSON, KB AF TANG, K TARANENKO, NI ALLMAN, SL CHEN, CH CHANG, LY JACOBSON, KB TI PICOLINIC-ACID AS A MATRIX FOR LASER MASS-SPECTROMETRY OF NUCLEIC-ACIDS AND PROTEINS SO RAPID COMMUNICATIONS IN MASS SPECTROMETRY LA English DT Article ID SINGLE-STRANDED-DNA; DESORPTION IONIZATION; MOLECULAR-WEIGHT; OLIGONUCLEOTIDES; ULTRAVIOLET; VAPORIZATION AB We found that picolinic acid is a very good matrix for matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry of oligonucleotides, proteins and tRNA. Among the oligonucleotides, picolinic acid was shown to be effective for homo-oligonucleotides, d(G)40 and d(C)60, and for mixed-base oligonucleotides up to 190 bases. In the case of the single-stranded oligonucleotides, and of double-stranded ones as well, only parent ions corresponding to single-stranded DNA were observed. The efficiency for MALDI of oligonucleotides using the picolinic acid matrix was superior to that using 3-hydroxypicolinic acid. MALDI of transfer RNA phenylalanine-specific (tRNA(Phe)), a 76-base ribonucleic acid, was detected with a signal-to-noise ratio of > 10. By comparison with 3-hydroxypicolinic acid the results with picolinic acid are notably superior for all oligonucleotides. C1 OAK RIDGE NATL LAB,POB 2008,BLDG 5500,MS-6378,OAK RIDGE,TN 37831. VANDERBILT UNIV,NASHVILLE,TN 37240. RI Allman, Steve/A-9121-2011; Tang, Kai/A-2194-2011 OI Allman, Steve/0000-0001-6538-7048; NR 24 TC 69 Z9 71 U1 1 U2 13 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0951-4198 J9 RAPID COMMUN MASS SP JI Rapid Commun. Mass Spectrom. PD SEP PY 1994 VL 8 IS 9 BP 673 EP 677 DI 10.1002/rcm.1290080902 PG 5 WC Chemistry, Analytical; Spectroscopy SC Chemistry; Spectroscopy GA PM125 UT WOS:A1994PM12500001 PM 7949332 ER PT J AU TANG, K TARANENKO, NI ALLMAN, SL CHANG, LY CHEN, CH AF TANG, K TARANENKO, NI ALLMAN, SL CHANG, LY CHEN, CH TI DETECTION OF 500-NUCLEOTIDE DNA BY LASER-DESORPTION MASS-SPECTROMETRY SO RAPID COMMUNICATIONS IN MASS SPECTROMETRY LA English DT Article ID HIGH-SPEED; OLIGONUCLEOTIDES; MATRIX; ACID AB We report the first detection of DNA segments as large as 500 nucleotides by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry, using picolinic acid and 3-hydroxypicolinic acid mixtures as desorption matrices. The successful detection of 500-nucleotide DNA indicates that laser mass spectrometry is now emerging as a new biotechnology tool for DNA-related research. It should be possible to utilize fast detection of large DNA segments by laser mass spectrometry for rapid human genome sequencing. C1 OAK RIDGE NATL LAB,DIV HLTH SCI RES,CHEM PHYS SECT,PHOTOPHYS GRP,OAK RIDGE,TN 37831. VANDERBILT UNIV,NASHVILLE,TN 37240. RI Allman, Steve/A-9121-2011; Tang, Kai/A-2194-2011 OI Allman, Steve/0000-0001-6538-7048; NR 17 TC 101 Z9 104 U1 1 U2 6 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0951-4198 J9 RAPID COMMUN MASS SP JI Rapid Commun. Mass Spectrom. PD SEP PY 1994 VL 8 IS 9 BP 727 EP 730 DI 10.1002/rcm.1290080913 PG 4 WC Chemistry, Analytical; Spectroscopy SC Chemistry; Spectroscopy GA PM125 UT WOS:A1994PM12500012 PM 7949335 ER PT J AU KUSTAS, WP PERRY, EM DORAISWAMY, PC MORAN, MS AF KUSTAS, WP PERRY, EM DORAISWAMY, PC MORAN, MS TI USING SATELLITE REMOTE-SENSING TO EXTRAPOLATE EVAPOTRANSPIRATION ESTIMATES IN TIME AND SPACE OVER A SEMIARID RANGELAND BASIN SO REMOTE SENSING OF ENVIRONMENT LA English DT Article; Proceedings Paper CT Remote Sensing of Soils and Vegetation Symposium CY 1993 CL TEMPE, AZ ID SURFACE-ENERGY BALANCE; SOIL-MOISTURE CONDITIONS; THERMAL INFRARED DATA; PARTIAL CANOPY COVER; AREAL EVAPOTRANSPIRATION; METEOROLOGICAL DATA; DAILY EVAPORATION; HEAT-FLUX; TEMPERATURE; MODEL AB Remote sensing data from the NOAA-11 AVHRR satellite were collected over the USDA-Agricultural Research Service Walnut Gulch Experimental Watershed in southeastern Arizona during the MONSOON 90 field campaigns. An energy balance model which relies primarily on remotely sensed inputs was used to extrapolate evapotranspiration (ET) estimates from one location containing near-surface meteorological data to other areas in the basin. Satisfactory results were obtained under a wide range of environmental conditions. However, the ET values are essentially instantaneous and therefore do not necessarily provide reliable estimates of daytime or daily ET fluxes required for many hydrological and resource management applications. An operational technique was developed to extrapolate one time of day ET estimates to daytime averages using the evaporative fraction concept and empirical methods for converting midday available energy to daytime average values. Model derived daytime average ET fluxes were in reasonable agreement with local ground-based measurements. The technique also was used to estimate daily ET at the basin scale. C1 PACIFIC NW LAB, RICHLAND, WA USA. USDA ARS, REMOTE SENSING LAB, BELTSVILLE, MD USA. USDA ARS, US WATER CONSERVAT LAB, PHOENIX, AZ 85040 USA. RP KUSTAS, WP (reprint author), USDA ARS, HYDROL LAB, BLDG 007, BARC W, BELTSVILLE, MD 20705 USA. NR 69 TC 83 Z9 90 U1 1 U2 9 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0034-4257 J9 REMOTE SENS ENVIRON JI Remote Sens. Environ. PD SEP PY 1994 VL 49 IS 3 BP 275 EP 286 DI 10.1016/0034-4257(94)90022-1 PG 12 WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology GA PK030 UT WOS:A1994PK03000012 ER PT J AU KNAPP, GS BENO, MA ROGERS, CS WILEY, CL COWAN, PL AF KNAPP, GS BENO, MA ROGERS, CS WILEY, CL COWAN, PL TI SOLUTION TO THE HIGH HEAT LOADS FROM UNDULATORS AT 3RD GENERATION SYNCHROTRON SOURCES - CRYOGENIC THIN-CRYSTAL MONOCHROMATORS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID POWER-DENSITY; SILICON; PERFORMANCE; OPTICS; BEAMS AB We have developed a new design for a cryogenically cooled monochromator employing a thin-crystal strategy which is capable of handling the central-cone power of the advanced photon source's undulator A at machine currents up to 300 mA. The key to the proposed design is to machine two opposing narrow channels in a large, indirectly cooled block of Si crystal, leaving a thin, similar to 0.6-mm-thick strip of Si. The thin section absorbs only a fraction of the incident beam power so that the operating temperatures of the crystal are in the range where Si has both a very high thermal conductivity and a very small or slightly negative thermal expansion coefficient. The fact that the crystal is operated in the negative range of thermal expansion means that the crystal surface illuminated by the x-ray beam is always under tension and therefore will not buckle. C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RP KNAPP, GS (reprint author), ARGONNE NATL LAB,DIV MAT SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 12 TC 15 Z9 15 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1994 VL 65 IS 9 BP 2792 EP 2797 DI 10.1063/1.1145222 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA PJ058 UT WOS:A1994PJ05800007 ER PT J AU XIE, ZQ LYNEIS, CM AF XIE, ZQ LYNEIS, CM TI PLASMA POTENTIALS AND PERFORMANCE OF THE ADVANCED ELECTRON-CYCLOTRON-RESONANCE ION-SOURCE SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID ECR SOURCE; MINIMAFIOS; GHZ AB The mean plasma potential was measured on the LBL advanced electron cyclotron resonance (AECR) ion source for a variety of conditions. The mean potentials for plasmas of oxygen, argon, and argon mixed with oxygen in the AECR were determined. These plasma potentials are positive with respect to the plasma chamber wall and are on the order of tens of volts. Electrons injected into the plasma by an electron gun or from an aluminum oxide wall coating with a very high secondary electron emission reduce the plasma potential as does gas mixing. A lower plasma potential in the AECR source coincides with enhanced production of high charged state ions indicating longer ion confinement times. The effect of the extra electrons from external injection or wall coatings is to lower the average plasma potential and to increase the n(e) tau(i) of the ECR plasma. With sufficient extra electrons, the need for gas mixing can be eliminated or reduced to a lower level so the source can operate at lower neutral pressures. A reduction of the neutral pressure decreases charge exchange between ions and neutrals and enhances the production of high charge state ions. An aluminum oxide coating results in the lowest plasma potential among the three methods discussed and the best source performance. RP XIE, ZQ (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 19 TC 59 Z9 59 U1 0 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD SEP PY 1994 VL 65 IS 9 BP 2947 EP 2952 DI 10.1063/1.1144583 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA PJ058 UT WOS:A1994PJ05800036 ER PT J AU TOLLE, MC KASSNER, ME AF TOLLE, MC KASSNER, ME TI DUCTILE FRACTURE IN PURE SILVER UNDER HIGH-TRIAXIAL STRESSES SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID CAVITATION INSTABILITIES; INTERLAYERS C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP TOLLE, MC (reprint author), OREGON STATE UNIV,DEPT MECH ENGN,CORVALLIS,OR 97331, USA. NR 14 TC 2 Z9 2 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 1 PY 1994 VL 31 IS 5 BP 531 EP 536 DI 10.1016/0956-716X(94)90139-2 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA NT044 UT WOS:A1994NT04400006 ER PT J AU GORETTA, KC CLUFF, JA BOLINGRISSER, MA ROUTBORT, JL AF GORETTA, KC CLUFF, JA BOLINGRISSER, MA ROUTBORT, JL TI COMPRESSIVE CREEP OF CUO SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID HIGH-TEMPERATURE CREEP; OXIDE SINGLE-CRYSTALS; POINT-DEFECTS; DEFORMATION; DEPENDENCE C1 ARGONNE NATL LAB,DIV MAT,ARGONNE,IL 60439. RP GORETTA, KC (reprint author), ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439, USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 1 PY 1994 VL 31 IS 5 BP 641 EP 646 DI 10.1016/0956-716X(94)90158-9 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA NT044 UT WOS:A1994NT04400025 ER PT J AU MARTIN, SJ FRYE, GC WESSENDORF, KO AF MARTIN, SJ FRYE, GC WESSENDORF, KO TI SENSING LIQUID PROPERTIES WITH THICKNESS-SHEAR MODE RESONATORS SO SENSORS AND ACTUATORS A-PHYSICAL LA English DT Article DE LIQUID SENSORS; THICKNESS-SHEAR MODE RESONATORS ID QUARTZ CRYSTAL MICROBALANCE; PIEZOELECTRIC-CRYSTALS; FREQUENCY; CONTACT; MASS AB The responses of smooth- and textured-surface thickness-shear mode (TSM) resonators in liquid are examined. Smooth devices, which viscously entrain a layer of contacting liquid, exhibit a response that depends on the product of liquid density and viscosity. Textured-surface devices, which also trap liquid in surface crevices, pores, etc., exhibit an additional response that depends on liquid density alone. Combining smooth- and textured-surface resonators in a monolithic sensor enables the liquid density and viscosity to be extracted simultaneously. RP MARTIN, SJ (reprint author), SANDIA NATL LABS,DEPT MICROSENSOR RES & DEV,ALBUQUERQUE,NM, USA. NR 26 TC 143 Z9 149 U1 1 U2 11 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0924-4247 J9 SENSOR ACTUAT A-PHYS JI Sens. Actuator A-Phys. PD SEP PY 1994 VL 44 IS 3 BP 209 EP 218 DI 10.1016/0924-4247(94)00806-X PG 10 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA PH633 UT WOS:A1994PH63300007 ER PT J AU HENDRICKSON, BA WOMBLE, DE AF HENDRICKSON, BA WOMBLE, DE TI THE TORUS-WRAP MAPPING FOR DENSE MATRIX CALCULATIONS ON MASSIVELY-PARALLEL COMPUTERS SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE LU FACTORIZATION; QR FACTORIZATION; HOUSEHOLDER TRIDIAGONALIZATION; PARALLEL COMPUTER; DENSE MATRIX; TORUS-WRAP MAPPING ID DISTRIBUTED-MEMORY MULTIPROCESSOR; LU-DECOMPOSITION; QR FACTORIZATION; COMMUNICATION; HYPERCUBE; COMPUTATIONS; ALGORITHMS; SYSTEMS; ARCHITECTURES; NETWORK AB Dense linear systems of equations are quite common in science and engineering, arising in boundary element methods, least squares problems, and other settings. Massively parallel computers will be necessary to solve the large systems required by scientists and engineers, and scalable parallel algorithms for the linear algebra applications must be devised for these machines. A critical step in these algorithms is the mapping of matrix elements to processors. In this paper, the use of the torus-wrap mapping in general dense matrix algorithms is studied from both theoretical and practical viewpoints. Under reasonable assumptions, it is proved that this assignment scheme leads to dense matrix algorithms that achieve (to within a constant factor) the lower bound on interprocessor communication. It is also shown that the torus-wrap mapping allows algorithms to exhibit less idle time, better load balancing, and less memory overhead than the more common row and column mappings. Finally, practical implementation issues are discussed, such as compatibility with basic linear algebra subprograms (BLAS) levels 1, 2, and 3, and the results of implementations of several dense matrix algorithms are presented. These theoretical and experimental results are compared with those obtained from more traditional mappings. RP HENDRICKSON, BA (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 37 TC 40 Z9 40 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD SEP PY 1994 VL 15 IS 5 BP 1201 EP 1226 DI 10.1137/0915074 PG 26 WC Mathematics, Applied SC Mathematics GA PD568 UT WOS:A1994PD56800014 ER PT J AU MENIKOFF, R AF MENIKOFF, R TI ERRORS WHEN SHOCK-WAVES INTERACT DUE TO NUMERICAL SHOCK WIDTH SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE HYPERBOLIC CONSERVATION LAWS; SHOCK INTERACTIONS; VISCOUS PROFILES ID DETONATION AB A simple test problem proposed by Noh, a cold gas with uniform initial particle velocity directed towards a rigid wall, demonstrates a generic problem with numerical shock capturing algorithms at boundaries that Noh called ''excess wall heating.'' The same type of numerical error is shown to occur when shock waves interact. The underlying cause is due to the numerical shock profile. The error can be understood from an analysis of the asymptotic solution of the partial differential equations when an artificial viscosity is added. The position of the front for a numerical shock wave can be defined by matching the total mass in the profile to that of a discontinuous shock. There is then a difference in the total energy of the numerical wave relative to a discontinuous shock. Moreover, the relative energy depends on the strength of the shock. The error when shock waves interact results from the difference in the relative energies between the incoming and outgoing shock waves. A conservative differencing scheme correctly describes the Hugoniot jump conditions for a steady propagating shock. The error implied by the asymptotic energy shift occurs in the entropy generated by the numerical dissipation in the transient when the waves interact. The entropy error remains localized and does not dissipate. A scaling argument shows that as the viscosity coefficient approaches zero, the error shrinks in spatial extent but the peak pointwise error is constant in magnitude. Consequently, the convergence of the inviscid limit to the hyperbolic solution is nonuniform in regions where shocks have interacted. RP MENIKOFF, R (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 11 TC 29 Z9 30 U1 0 U2 4 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD SEP PY 1994 VL 15 IS 5 BP 1227 EP 1242 DI 10.1137/0915075 PG 16 WC Mathematics, Applied SC Mathematics GA PD568 UT WOS:A1994PD56800015 ER PT J AU SMITH, JL HALVORSON, JJ BOLTON, H AF SMITH, JL HALVORSON, JJ BOLTON, H TI SPATIAL RELATIONSHIPS OF SOIL MICROBIAL BIOMASS AND C AND N MINERALIZATION IN A SEMIARID SHRUB-STEPPE ECOSYSTEM SO SOIL BIOLOGY & BIOCHEMISTRY LA English DT Article ID NITROGEN MINERALIZATION; DEPENDENT VARIABILITY; POTENTIALS; NITRIFIERS; HISTORIES; PASTURE; NITRATE; YIELD AB Microbial mineralization of both C and N in the shrub-steppe soils of central Washington influence plant productivity and ecosystem stability. Microbial processes in arid ecosystems are in turn influenced by heterogeneously-spaced plants and abiotic variables. Our objective was to determine the spatial relationships of C and N mineralization and microbial biomass to plant location. We measured inorganic N pools, microbial biomass and C and N mineralization potentials (C(o), N(o)) from 205 soil samples positioned around five Artemisia tridentata shrub plants. Most variables showed log normal distributions and all were significantly correlated to each other. Microbial biomass had the highest positive correlation with C mineralization and soluble C. The metabolic C quotient (qCO2) was twice that of other natural forest and grassland ecosystems. In addition the metabolic N quotient (qN) was lower in the shrub-steppe soil compared to other ecosystems. The coupled metabolic quotients indicate the shrub-steppe soil has low substrate quality with a high N immobilization capacity. Geostatistical analysis of spatial relationships showed that samples were spatially related with each other to a distance of 0.5-1.0 m. At sample locations where microbial biomass was high C(o) was also high. In contrast, N(o) was low in these areas. Cross-correlation with plants showed that C(o) was spatially related to shrubs and not to grass plants and that N(o) was not related to any plant location. Cross-correlation analysis revealed that variables that are linearly correlated may not necessarily be spatially correlated. Our study showed that the resource island effect of nutrients and microbial biomass in the shrub-steppe ecosystem is important when estimating microbial processes at the landscape level. C1 PACIFIC NW LAB, DEPT ENVIRONM SCI, RICHLAND, WA 99352 USA. RP SMITH, JL (reprint author), WASHINGTON STATE UNIV, USDA ARS, 215 JOHNSON HALL, PULLMAN, WA 99164 USA. RI Bolton, Harvey/E-5583-2011 NR 29 TC 110 Z9 124 U1 4 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-0717 J9 SOIL BIOL BIOCHEM JI Soil Biol. Biochem. PD SEP PY 1994 VL 26 IS 9 BP 1151 EP 1159 DI 10.1016/0038-0717(94)90137-6 PG 9 WC Soil Science SC Agriculture GA PD218 UT WOS:A1994PD21800007 ER PT J AU JOSLIN, JD WOLFE, MH AF JOSLIN, JD WOLFE, MH TI FOLIAR DEFICIENCIES OF MATURE SOUTHERN APPALACHIAN RED SPRUCE DETERMINED FROM FERTILIZER TRIALS SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID GREAT-SMOKY-MOUNTAINS; ALUMINUM TOXICITY; FOREST DECLINE; SOIL CHEMISTRY; TREE SEEDLINGS; CLOUD WATER; NEW-ENGLAND; FIR STANDS; NEW-YORK; DEPOSITION AB A field fertilization study employing additions of Ca, Mg, and N to a mature red spruce (Picea rubens Sarg.) stand was conducted at a high-elevation site in southwestern Virginia. Statistically significant increases in needle weight (20% larger than controls) were observed after two growing seasons in treatments receiving Ca or Ca plus Mg. Significant foliar growth responses were accompanied by significant increases (20-60%) in foliar concentrations of Ca, Zn, Mg, acid Mn in current-year and 1-yr-old needles. Both Ca and Mg addition, alone or together, appear to have alleviated antagonisms by Al towards the uptake of these four cations. Both the foliar growth response (negative) and the foliar N concentration response to N addition were nonsignificant, a response consistent with the evidence for N saturation at this site. Vector analysis, correlation analyses, and literature evidence all provide support at this site for a foliar deficiency of Zn at a foliar concentration of 14 mg kg(-1) and for a foliar and/or root deficiency of Ca at a current-year needle concentration of 1700 mg kg(-1). Foliar concentrations of Ca and Zn at or below these thresholds are common in southern Appalachian red spruce and may be related to its apparent growth decline in the higher elevations. RP JOSLIN, JD (reprint author), OAK RIDGE NATL LAB,DEPT ATMOSPHER SCI,TENNESSEE VALLEY AUTHOR,COOPERAT FOREST STUDIES PROGRAM,OAK RIDGE,TN 37831, USA. NR 47 TC 17 Z9 18 U1 0 U2 0 PU SOIL SCI SOC AMER PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 SN 0361-5995 J9 SOIL SCI SOC AM J JI Soil Sci. Soc. Am. J. PD SEP-OCT PY 1994 VL 58 IS 5 BP 1572 EP 1579 PG 8 WC Soil Science SC Agriculture GA PH246 UT WOS:A1994PH24600042 ER PT J AU TUTTLE, JR ALBIN, DS TENNANT, A GABOR, AM CONTRERAS, M NOUFI, R AF TUTTLE, JR ALBIN, DS TENNANT, A GABOR, AM CONTRERAS, M NOUFI, R TI CHARACTERIZATION OF VARIABLE-BAND-GAP THIN-FILM CU(IN,GA)SE-2 - A SIMPLE-MODEL FOR THE INTERDIFFUSION OF IN AND GA IN ALLOY STRUCTURES SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 7th International Photovoltaic Science and Engineering Conference (PVSEC-7) CY NOV 22-26, 1993 CL NAGOYA, JAPAN SP Japan Soc Appl Phys, Inst Elect Engineers Japan, Nagoya Ind Sci Res Inst, Chem Soc Japan, Electrochem Soc Japan, Illuminating Engn Inst Japan, IEEE, Electron Devices Soc, Inst Electr Informat & Commun Engineers, Inst Televis Engineers Japan, Int Solar Energy Soc, Japanese Sect, Japan Soc Aeronaut & Space Sci, Japan Soc Direct Energy Convers, Japan Solar Energy Soc, Commiss EC, Photovoltaic Div AB Thin-film photovoltaic devices based upon the Cu(In,Ga)Se-2 material system continue to advance with total-area cell efficiencies approaching 16%. Fabrication processes have been developed that may easily be transferred to industrial scale systems. Device designs incorporating variable-band-gap absorbers have been successful in realizing the full potential of the alloy material system. The final In and Ga distribution and phase nature of the variable-band-gap absorber is highly dependent on the fabrication process. A growth model describes the interdiffusion of CuInSe2 and CuGaSe2 for three fabrication scenarios. The incorporation of the In and Ga has been accomplished in such a manner that a range of device parameters results. Higher open-circuit voltage devices offer the opportunity for lower interconnect losses at the module level. The highest efficiency device fabricated to date exhibits the following characteristics: area = 0.43 cm(2), V-oc = 650 mV, J(sc)(total-area)= 32.2 mA/cm(2), FF = 76.1%, and eta = 15.9%. our work at The National Renewable Energy Laboratory is presently focusing on realizing these improvements, scaling to 100 cm(2) submodule sizes, and transferring the processes to a non-physical vapor deposition equipment systems. RP TUTTLE, JR (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 20 TC 12 Z9 12 U1 0 U2 3 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 SEP PY 1994 VL 35 IS 1-4 BP 193 EP 201 PG 9 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA PX516 UT WOS:A1994PX51600025 ER PT J AU STONE, JL AF STONE, JL TI SOLAR-2000 - THE NEXT CRITICAL STEP TOWARDS LARGE-SCALE COMMERCIALIZATION OF PHOTOVOLTAICS IN THE UNITED-STATES SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 7th International Photovoltaic Science and Engineering Conference (PVSEC-7) CY NOV 22-26, 1993 CL NAGOYA, JAPAN SP Japan Soc Appl Phys, Inst Elect Engineers Japan, Nagoya Ind Sci Res Inst, Chem Soc Japan, Electrochem Soc Japan, Illuminating Engn Inst Japan, IEEE, Electron Devices Soc, Inst Electr Informat & Commun Engineers, Inst Televis Engineers Japan, Int Solar Energy Soc, Japanese Sect, Japan Soc Aeronaut & Space Sci, Japan Soc Direct Energy Convers, Japan Solar Energy Soc, Commiss EC, Photovoltaic Div AB The US Department of Energy (DOE), in collaboration with key stakeholders, initiated a strategy to accelerate the adoption of photovoltaics, biomass electric, and solar thermal electric technologies. The three major elements include technology development and validation, market conditioning, and joint venture projects. This paper details the activities associated only with photovoltaics, progress towards goals, and expected payoffs. Success is necessary to accelerate renewable technology acceptance and deployment towards meeting the world's demands for environmentally acceptable electricity generation. RP STONE, JL (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 4 TC 1 Z9 2 U1 0 U2 3 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 SEP PY 1994 VL 34 IS 1-4 BP 41 EP 49 DI 10.1016/0927-0248(94)90022-1 PG 9 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA PK839 UT WOS:A1994PK83900005 ER PT J AU BASORE, PA GEE, JM BUCK, ME SCHUBERT, WK RUBY, DS AF BASORE, PA GEE, JM BUCK, ME SCHUBERT, WK RUBY, DS TI SIMPLIFIED HIGH-EFFICIENCY SILICON CELL PROCESSING SO SOLAR ENERGY MATERIALS AND SOLAR CELLS LA English DT Article; Proceedings Paper CT 7th International Photovoltaic Science and Engineering Conference (PVSEC-7) CY NOV 22-26, 1993 CL NAGOYA, JAPAN SP Japan Soc Appl Phys, Inst Elect Engineers Japan, Nagoya Ind Sci Res Inst, Chem Soc Japan, Electrochem Soc Japan, Illuminating Engn Inst Japan, IEEE, Electron Devices Soc, Inst Electr Informat & Commun Engineers, Inst Televis Engineers Japan, Int Solar Energy Soc, Japanese Sect, Japan Soc Aeronaut & Space Sci, Japan Soc Direct Energy Convers, Japan Solar Energy Soc, Commiss EC, Photovoltaic Div AB We developed an emitter diffusion process that yields a near-ideal doping profile with a passivating oxide in a single furnace step. Because this process subjects the material to only one high-temperature thermal excursion, bulk lifetime is better preserved. This is especially true for lower-cost silicon materials containing a high concentration of oxygen or carbon. Using this process, we routinely obtain one-sun cell efficiencies over 19% on float-zone material and over 18% on Czochralski material. Using solar-grade Czochralski material, we have demonstrated record efficiencies of 18.3% at one sun and 20.0% under concentration. Simple processes that yield high-performance diffusion profiles are expected to become increasingly important as manufacturers adopt improved techniques for ohmic contacts. RP BASORE, PA (reprint author), SANDIA NATL LABS,DEPT PHOTOVOLTA SYST COMPONENTS,DEPT 6213,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 6 TC 9 Z9 9 U1 0 U2 1 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 SEP PY 1994 VL 34 IS 1-4 BP 91 EP 100 DI 10.1016/0927-0248(94)90028-0 PG 10 WC Energy & Fuels; Materials Science, Multidisciplinary; Physics, Applied SC Energy & Fuels; Materials Science; Physics GA PK839 UT WOS:A1994PK83900011 ER PT J AU JACOB, JM KIM, DS BOUCHALKHA, A SONG, JJ KLEM, JF HOU, H TU, CW MORKOC, H AF JACOB, JM KIM, DS BOUCHALKHA, A SONG, JJ KLEM, JF HOU, H TU, CW MORKOC, H TI SPATIAL CHARACTERISTICS OF GAAS, GAAS-LIKE, AND ALAS-LIKE LO PHONONS IN GAAS ALXGA1-XAS SUPERLATTICES - THE STRONG X-DEPENDENCE SO SOLID STATE COMMUNICATIONS LA English DT Article ID PHOTOEXCITED HOT CARRIERS; RAMAN-SCATTERING; OPTICAL PHONONS; CONFINED LO; GENERATION AB Using picosecond Raman scattering, hot phonon occupation numbers (N's) of GaAs, GaAs-like, and AlAs-like LO phonons have been studied over a wide range of structural parameters in more than 20 GaAs/AlxGa1-xAs superlattices. In addition, simultaneous measurements of these LO phonon modes in bulk GaAs and AlxGa1-xAs alloys are made for comparison. N's of both GaAs and GaAs-like mode of the superlattices, deduced by comparing Stokes and anti-Stokes intensities after appropriate corrections for small resonant Raman effects in each sample, are comparable to or larger than those of bulk GaAs or AlxGa1-xAs alloys for x less-than-or-equal-to 0.2. while they are much smaller for x>0.3. Our results suggest that both GaAs and GaAs-like LO phonons observed in Raman scattering are spatially extended for x less-than-or-equal-to 0.2, while they are confined within individual wells for x>0.3. C1 OKLAHOMA STATE UNIV,CTR LASER RES,STILLWATER,OK 74078. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV CALIF SAN DIEGO,DEPT ELECT ENGN,LA JOLLA,CA 92093. UNIV ILLINOIS,COORDINATED SCI LAB,URBANA,IL 61801. RP JACOB, JM (reprint author), OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078, USA. NR 26 TC 18 Z9 18 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD SEP PY 1994 VL 91 IS 9 BP 721 EP 724 DI 10.1016/0038-1098(94)00452-8 PG 4 WC Physics, Condensed Matter SC Physics GA PD569 UT WOS:A1994PD56900012 ER PT J AU WANG, ZN SHI, DL AF WANG, ZN SHI, DL TI TRANSPORT RESISTIVE BROADENING BY AVALANCHE FLUX MOTION IN HIGH-TEMPERATURE SUPERCONDUCTORS - SOC IN A DRIVEN SYSTEM SO SOLID STATE COMMUNICATIONS LA English DT Article ID SELF-ORGANIZED CRITICALITY; THERMALLY ACTIVATED DISSIPATION; II SUPERCONDUCTORS; CRITICAL CURRENTS; SINGLE-CRYSTALS; CURRENT-DENSITY; MAGNETIC-FIELD; CRITICAL STATE; BI2SR2CACU2OX AB Characteristics of self-organized critically (SOC) are investigated for a driven system in high-T(c) superconductors. By applying a bias current to a single crystal of Bi2Sr2CaCu2Ox, we are able to drive the vortex state to criticality. We establish a magnetic field profile for a type-II superconductor by considering both the magnetic force (caused by the Bean critical current) and the Lorentz force (associated with the bias current). The resistive broadening is interpreted in the framework of SOC. We show that the R vs T curve is divided into regions of flux flow, thermally activated flux avalanche, and thermally activated flux creep. C1 IIT,DEPT PHYS,CHICAGO,IL 60616. RP WANG, ZN (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 24 TC 2 Z9 2 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1098 J9 SOLID STATE COMMUN JI Solid State Commun. PD SEP PY 1994 VL 91 IS 9 BP 741 EP 746 DI 10.1016/0038-1098(94)00384-X PG 6 WC Physics, Condensed Matter SC Physics GA PD569 UT WOS:A1994PD56900016 ER PT J AU FRANKE, JE NIEMCZYK, TM HAALAND, DM AF FRANKE, JE NIEMCZYK, TM HAALAND, DM TI INFRARED SPECTROSCOPIC TECHNIQUES FOR QUANTITATIVE CHARACTERIZATION OF DIELECTRIC THIN-FILMS ON SILICON-WAFERS SO SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY LA English DT Review ID CHEMICAL VAPOR-DEPOSITION; PHOSPHOSILICATE GLASS-FILMS; LEAST-SQUARES METHODS; EXTERNAL REFLECTION SPECTROSCOPY; THERMAL EMISSION-SPECTROSCOPY; ION MASS-SPECTROMETRY; X-RAY-FLUORESCENCE; BOROPHOSPHOSILICATE GLASS; MULTIVARIATE CALIBRATION; TEMPERATURE-MEASUREMENT AB Dielectric thin films are critical components of microelectronic devices, and for proper device function their properties must be carefully controlled. Rapid and efficient quality control techniques are needed for characterizing these films. Infrared (IR) spectroscopy in the mid-IR region (400-4000 cm-1) has been widely used for qualitative characterization of solid, dielectric thin films in the microelectronics industry. The IR spectra of these films on silicon exhibit overlapping spectral bands, solid-solid molecular interactions, and nonlinear behavior of spectral bands arising from a variety of sources. Conventional univariate analysis of such spectra did not yield reliable quantitative predictions of the dielectric thin-film properties. The relatively recent appearance of quantitative IR studies of dielectric thin films has followed progress in chemistry toward multivariate analysis of IR spectral data. This article reviews some of the processing and non-IR characterization methods for dielectric thin films currently used in the production of integrated circuits, and it reviews univariate quantitative and semi-quantitative analyses that have used IR spectroscopy. It stresses recent developments in IR techniques and multivariate calibration that together permit rapid, precise, nondestructive, and quantitative determinations of various critical dielectric thin-film properties. Results from the application of quantitative IR techniques to the analysis of dielectric thin films are drawn from a review of the authors' work in the field. C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 171 TC 18 Z9 18 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0584-8539 J9 SPECTROCHIM ACTA A JI Spectroc. Acta Pt. A-Molec. Biomolec. Spectr. PD SEP PY 1994 VL 50 IS 10 BP 1687 EP 1723 DI 10.1016/0584-8539(94)80177-0 PG 37 WC Spectroscopy SC Spectroscopy GA PD221 UT WOS:A1994PD22100001 ER PT J AU BRANDON, WD GARRETT, WR CHEN, CH ALLMAN, SL PAYNE, MG AF BRANDON, WD GARRETT, WR CHEN, CH ALLMAN, SL PAYNE, MG TI EXPERIMENTAL-VERIFICATION OF A SIMPLE METHOD TO AVOID ISOTOPIC BIASES RESULTING FROM HYPERFINE-STRUCTURE IN RESONANT IONIZATION MASS-SPECTROSCOPY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID BROAD-BAND RADIATION; ABUNDANCES; LASERS AB Hyperfine structure plays a major role in producing ''anomalous'' odd-to-even isotope ratios in the stepwise excitation, ionization and mass analysis of an element with broad bandwidth, long-pulsed lasers. PAYNE et al. [Spectrochim Acta 46B, 1439 (1992)] proposed that these anomalies may be avoided by cautious application of a simple prescription. We test the prediction by conducting a one-color, two-step ionization experiment on Sn at sufficient laser intensity such that the power-broadened width of a selected resonant transition exceeds the laser bandwidth. The laser is detuned from resonance by an amount greater than the laser bandwidth but less than the power-broadened width. The data obtained in our study confirm the prediction that a slightly detuned resonant ionization scheme effectively eliminates odd/even isotope ionization biases and that operating at adequate laser intensity produces a fairly wide detuning regime over which faithful odd/even isotope ratios are expected. Specifically, detunings of 5-10 cm-1 are sufficient to eliminate these biases in the two-photon stepwise (1+1) ionization by way of P-3O --> P-3(1) resonance in tin (Sn) at a laser power density of 10(8) W cm-2. C1 GEORGIA SO UNIV,LANDRUM,GA 30460. RP BRANDON, WD (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. RI Allman, Steve/A-9121-2011 OI Allman, Steve/0000-0001-6538-7048 NR 15 TC 8 Z9 8 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD SEP PY 1994 VL 49 IS 11 BP 1057 EP 1066 DI 10.1016/0584-8547(94)80091-X PG 10 WC Spectroscopy SC Spectroscopy GA PZ337 UT WOS:A1994PZ33700002 ER PT J AU CAI, MX ISHII, I CLIFFORD, RH MONTASER, A PALMER, BA LAYMAN, LR AF CAI, MX ISHII, I CLIFFORD, RH MONTASER, A PALMER, BA LAYMAN, LR TI FUNDAMENTAL PROPERTIES OF HELIUM INDUCTIVELY-COUPLED PLASMAS MEASURED BY HIGH-RESOLUTION FOURIER-TRANSFORM SPECTROMETRY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID RELATIVE OSCILLATOR-STRENGTHS; FE-I TRANSITIONS; RADIAL EXCITATION TEMPERATURES; GAS-FLOW TORCH; PRECISION-MEASUREMENT; ICP; ARGON; 0.5-PERCENT; DISCHARGES; FREQUENCY AB Intensities and widths of atomic spectral lines of He, H, and Fe, excited in an atmospheric-pressure helium inductively coupled plasma (He ICP) were measured with a high-resolution Fourier transform spectrometer. These data along with measured intensities of rotational bands, such as B2SIGMA(u)+ --> X2SIGMA(g)+ of N2+ and A2SIGMA+ --> X2PI(i) of OH, were used to estimate excitation, rotational, and Doppler temperatures, and electron number densities. Similar to an Ar ICP, the widths of Fe lines ranged from 3 to 4 pm. The line widths of H and He lines in the spectra from a dry He ICP generally were larger than those observed from a wet plasma. The line-width data for H were used to evaluate electron number densities in wet and dry He ICP discharges. The excitation temperature of He ICP was dependent upon the energy levels of the selected thermometric species. The rotational temperatures measured from OH (3000 K) and N2+ (2200 K) were substantially different from those of an Ar ICP. The presence of water in the aerosol resulted in an increase in the excitation temperature of the He ICP, similar to the trend observed earlier for the Ar ICP. The implications of these results in He ICP spectrochemical analysis are discussed. C1 GEORGE WASHINGTON UNIV,DEPT CHEM,WASHINGTON,DC 20052. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 49 TC 16 Z9 16 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD SEP PY 1994 VL 49 IS 11 BP 1081 EP 1095 DI 10.1016/0584-8547(94)80093-6 PG 15 WC Spectroscopy SC Spectroscopy GA PZ337 UT WOS:A1994PZ33700004 ER PT J AU ISHII, I CAI, MX MONTASER, A PALMER, BA LAYMAN, LR AF ISHII, I CAI, MX MONTASER, A PALMER, BA LAYMAN, LR TI ROTATIONAL TEMPERATURES OF ARGON NITROGEN ICP DISCHARGES MEASURED BY HIGH-RESOLUTION FOURIER-TRANSFORM SPECTROMETRY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Note ID INDUCTIVELY-COUPLED PLASMA; ATOMIC EMISSION-SPECTROMETRY; RADIAL EXCITATION TEMPERATURES; POLYATOMIC-ION INTERFERENCES; DIRECT SAMPLE INSERTION; MIXED-GAS PLASMAS; MASS-SPECTROMETRY; SIMPLEX OPTIMIZATION; DENSITY-MEASUREMENTS; MOLECULAR GASES AB The intensity distribution in the rotational structure of the electronic band B2SIGMA(u)+ --> X2SIGMA(g)+ of N2+ (0,0) was measured by high-resolution Fourier transform spectrometry. This spectral information enabled estimates of the rotational temperatures in atmospheric-pressure argon-nitrogen inductively coupled plasmas (Ar-N2 ICPs). These rotational temperatures were compared to the excitation and the Doppler temperatures of Ar ICP and Ar-N2 ICPs having from 0 to 100% nitrogen in the outer gas flow. The rotational temperature of the mixed-gas plasmas ranged from 5500 to 10 000 K, depending on the percentage of nitrogen in the outer gas flow, compared to 7800 K for the Ar ICP. The lowest and the highest rotational temperatures were obtained when the outer gas flow contained 100% and 17% nitrogen, respectively. C1 GEORGE WASHINGTON UNIV,DEPT CHEM,WASHINGTON,DC 20052. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 48 TC 18 Z9 18 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0584-8547 J9 SPECTROCHIM ACTA B JI Spectroc. Acta Pt. B-Atom. Spectr. PD SEP PY 1994 VL 49 IS 11 BP 1111 EP 1119 DI 10.1016/0584-8547(94)80096-0 PG 9 WC Spectroscopy SC Spectroscopy GA PZ337 UT WOS:A1994PZ33700007 ER PT J AU NING, L DALEY, LS SOELDNER, AH CALLIS, JB OZANICH, RM AF NING, L DALEY, LS SOELDNER, AH CALLIS, JB OZANICH, RM TI CONSTRUCTION OF AN IMAGING VISIBLE SPECTROPHOTOMETER AND ITS APPLICATION TO PLANT SCIENCES SO SPECTROSCOPY LA English DT Article ID AVIRIS DATA; LEAVES; FLUORESCENCE; APPARATUS; CAM; SPECTROSCOPY; SPECTRA AB Visible spectra of plant leaves yield information with considerable potential far improving agricultural production. Because the related spectral information contained in leaves is distributed unevenly across the surface of the leaf, we constructed an imaging spectrophotometer, which uses a charge-coupled device (CCD] camera that; can acquire spectra for 31,680 positions per sample. The instrument was tested using in vivo spectra of plants, because in vivo absorbence between 600 and 750 nm are associated with photosynthetic light gathering systems, Difference spectra of leaf areas showing different cell types were obtained and compared to spectra of a full sun-tolerant, chlorophyll b-deficient ornamental perennial grass [Millium effusum L. var. aureum) and the published spectra of chloroplasts of OY-OG chlorophyll b deficient mutant of Zea mays L. Excellent results were also obtained when the relative respiration rate of plant roots was determined by measuring pH dependent absorbance of a dye-impregnated agar matrix around the roots. C1 OREGON STATE UNIV, DEPT HORT, CORVALLIS, OR 97331 USA. UNIV WASHINGTON, DEPT CHEM, SEATTLE, WA 98195 USA. PACIFIC NW LAB, CTR EARTH & ENVIRONM SCI, RICHLAND, WA 99352 USA. NR 54 TC 10 Z9 10 U1 0 U2 3 PU ADVANSTAR COMMUNICATIONS PI DULUTH PA 131 W FIRST ST, DULUTH, MN 55802 SN 0887-6703 J9 SPECTROSCOPY JI Spectroscopy PD SEP PY 1994 VL 9 IS 7 BP 41 EP 48 PG 8 WC Spectroscopy SC Spectroscopy GA RF250 UT WOS:A1994RF25000009 ER PT J AU WU, W CHU, CY ROUTBORT, JL HODGE, JD KLEMPTNER, LJ APPLEGATE, DS GORETTA, KC AF WU, W CHU, CY ROUTBORT, JL HODGE, JD KLEMPTNER, LJ APPLEGATE, DS GORETTA, KC TI GLASS COATING OF YBA2CU3OX WIRES SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Note ID MECHANICAL-PROPERTIES; MICROSTRUCTURAL DEVELOPMENT; SUPERCONDUCTING WIRES; NEUTRON-DIFFRACTION; DENSE; BI2SR2CACU2OX; FABRICATION; PHASE; STEEL; FILMS AB PbO/B2O3-based glass coatings were applied to monolithic YBa2Cu3Ox wires. Smooth, dense coatings were obtained by heating in O-2 at 375 degrees C for 0.5-1.0 h. The coatings did not affect superconducting properties and provided mechanical strengthening. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. ILLINOIS SUPERCONDUCTOR CORP,EVANSTON,IL 60201. ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439. NR 41 TC 1 Z9 1 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-2048 J9 SUPERCOND SCI TECH JI Supercond. Sci. Technol. PD SEP PY 1994 VL 7 IS 9 BP 691 EP 695 DI 10.1088/0953-2048/7/9/012 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA PG512 UT WOS:A1994PG51200012 ER PT J AU PENG, J ODOM, JD DUNLAP, RB SILKS, LA AF PENG, J ODOM, JD DUNLAP, RB SILKS, LA TI USE OF A SELONE CHIRAL DERIVATIZING AGENT FOR THE ABSOLUTE CONFIGURATIONAL ASSIGNMENT OF STEREOGENIC CENTERS SO TETRAHEDRON-ASYMMETRY LA English DT Note ID MAGNETIC-RESONANCE SPECTROSCOPY; O-METHYLMANDELATE; REAGENTS; ALPHA AB Coupling of chiral selone a chiral derivatizing agent to D and L amino acids gives adducts which are characterized by Se-77 NMR, UV, and circular dichroism spectroscopy and allows for the determination of the absolute configuration of the parent amino acid. C1 LOS ALAMOS NATL LAB,BIOCHEM & SPECTROSCOPY SECT,LOS ALAMOS,NM 87544. UNIV S CAROLINA,DEPT CHEM & BIOCHEM,COLUMBIA,SC 29208. NR 16 TC 16 Z9 16 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0957-4166 J9 TETRAHEDRON-ASYMMETR JI Tetrahedron: Asymmetry PD SEP PY 1994 VL 5 IS 9 BP 1627 EP 1630 DI 10.1016/0957-4166(94)80066-9 PG 4 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic; Chemistry, Physical SC Chemistry GA PF551 UT WOS:A1994PF55100001 ER PT J AU Somorjai, GA Materer, N AF Somorjai, G. A. Materer, N. TI Surface structures in ammonia synthesis SO TOPICS IN CATALYSIS LA English DT Article DE ammonia synthesis; surface structure; structure sensitivity; iron; rhenium; STM AB Ammonia synthesis is one of the most structure sensitive catalytic reactions. Reaction studies using single crystals showed the open (111) and (211) crystal faces of iron and the (11 (2) over bar1) and (11 (2) over bar0) crystal faces of rhenium to be most active, while the close packed iron (110) and rhenium (0001) crystal faces were almost inactive. These studies suggest that seven (C-7) and eight (C-8) metal atom coordinated surface sites, which are available only on the active surfaces, are very active for the dissociation of dinitrogen, the limiting factor in the reaction rate under most experimental circumstances. In this paper, the experimental evidence for the existence of the C-7 sites in iron is reviewed. In addition, the role of potassium in creating a different active site which is less sensitive to the iron surface structure is discussed. Newly developed surface science techniques should permit investigations into the dissociation of dinitrogen at the C-7 sites and how the resulting chemisorbed nitrogen atoms are removed to allow for reaction turnover. Advances in LEED-surface crystallography, allowing detailed determination of relaxation in the clean metal surfaces and adsorbate induced restructuring of the metal surface, reopen the question of the real structure of the active sites in the presence of atomic nitrogen, or atomic nitrogen coadsorbed with potassium and oxygen. Investigation of the dynamics of surface restructuring involving the movements of both the substrate metal atoms and the chemisorbed atoms by surface diffusion becomes feasible by the availability of the high pressure/high temperature STM system built in our laboratory. Studies of the surface structures of the model iron catalysts under dynamic conditions, using 0.1 ms time resolution and atomic spatial resolution under reaction conditions are now possible. C1 [Somorjai, G. A.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Div Mat Sci, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Somorjai, GA (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. FU Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division, of the US Department of Energy [DE-AC03-76SF00098] FX This work was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, Materials Sciences Division, of the US Department of Energy under contract No. DE-AC03-76SF00098. NR 27 TC 45 Z9 46 U1 2 U2 33 PU SPRINGER/PLENUM PUBLISHERS PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1022-5528 J9 TOP CATAL JI Top. Catal. PD SEP PY 1994 VL 1 IS 3-4 BP 215 EP 231 DI 10.1007/BF01492277 PG 17 WC Chemistry, Applied; Chemistry, Physical SC Chemistry GA V26ES UT WOS:000208529500004 ER PT J AU FERNANDES, TRC LEE, WE MITCHELL, TE AF FERNANDES, TRC LEE, WE MITCHELL, TE TI MICROSTRUCTURAL ASPECTS OF REDUCTION OF ZIMBABWE CHROMITE TO HIGH-CARBON FERROCHROMIUM SO TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY LA English DT Article ID DEFORMATION AB Examination by transmission-electron microscopy of natural and metallurgically reduced chromites indicates that the microstructures of the chromite spinels have a profound influence on the metallurgical characteristics of the ores. Spinesl of refining ores have relatively defect-free structures with a low density of dislocations and inclusions, whereas non-refining ores are characterized by many crystal defects that include dislocations, inclusions, silicate veins and microfractures. These defects influence the reactions that occur on the reduction of chromite ore to high-carbon ferro-chromium. Nucleation of the alloy is favoured at crystal imperfections, which have higher free energies than the surrounding defect-free lattice. The growth, morphology and orientation of the precipitates are controlled by the crystallographic planes and axes of the spinel. Dislocations in the spinel assist the growth of the precipitates by providing easy paths for the diffusion of cations. C1 UNIV SHEFFIELD,DEPT ENGN MAT,SHEFFIELD S10 2TN,S YORKSHIRE,ENGLAND. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544. CASE WESTERN RESERVE UNIV,DEPT ENGN MAT,CLEVELAND,OH 44106. RP FERNANDES, TRC (reprint author), UNIV ZIMBABWE,INST MIN RES,POB MP 167,MT PLEASANT,HARARE,ZIMBABWE. NR 21 TC 5 Z9 5 U1 0 U2 0 PU INST MINING METALLURGY PI LONDON PA 44 PORTLAND PLACE, LONDON, ENGLAND W1N 4BR SN 0371-9553 J9 T I MIN METALL C JI Trans. Inst. Min. Metall. Sect. C-Miner. Process. Extr. Metall. PD SEP-DEC PY 1994 VL 103 BP C177 EP C187 PG 11 WC Mining & Mineral Processing SC Mining & Mineral Processing GA PN014 UT WOS:A1994PN01400002 ER PT J AU BURGESS, WG PRESTON, AR BOTTON, GA ZALUZEC, NJ HUMPHREYS, CJ AF BURGESS, WG PRESTON, AR BOTTON, GA ZALUZEC, NJ HUMPHREYS, CJ TI BENEFITS OF ENERGY-FILTERING FOR ADVANCED CONVERGENT-BEAM ELECTRON-DIFFRACTION PATTERNS SO ULTRAMICROSCOPY LA English DT Article ID CRYSTALS AB Energy filtering is well known to have a dramatic effect on the appearance of standard, zone-axis convergent beam electron diffraction patterns. In this paper, the effects of energy filtering on some less-common types of CBED patterns are shown. In particular, the (002) and (402) quasi-forbidden reflections in silicon are investigated, and the effects of energy filtering demonstrated. The filtering of HOLZ excess lines in large-angle zone-axis patterns is shown, as these patterns are of interest for Debye-Waller factor determination. Filtered and unfiltered bright-field large-angle CBED (LACBED) patterns of aluminium are presented along with EELS spectra to demonstrate the partial removal of inelastically scattered electrons due to the LACBED geometry. C1 ARGONNE NATL LAB,DIV MAT SCI,CTR ELECTRON MICROSCOPY,ARGONNE,IL 60439. RP BURGESS, WG (reprint author), DEPT MAT SCI & MET,PEMBROKE ST,CAMBRIDGE CB2 3QZ,ENGLAND. NR 13 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-3991 J9 ULTRAMICROSCOPY JI Ultramicroscopy PD SEP PY 1994 VL 55 IS 3 BP 276 EP 283 DI 10.1016/0304-3991(94)90062-0 PG 8 WC Microscopy SC Microscopy GA PL273 UT WOS:A1994PL27300009 ER PT J AU BERRY, CR HOUSE, JK POULOS, PP MADIGAN, JE WOODARD, JC POOL, RR OBRIEN, TR ACKERMAN, N AF BERRY, CR HOUSE, JK POULOS, PP MADIGAN, JE WOODARD, JC POOL, RR OBRIEN, TR ACKERMAN, N TI RADIOGRAPHIC AND PATHOLOGICAL FEATURES OF OSTEOPETROSIS IN 2 PERUVIAN PASO FOALS SO VETERINARY RADIOLOGY & ULTRASOUND LA English DT Article DE EQUINE; OSTEOPETROSIS; RADIOGRAPHY; PATHOLOGY ID CONGENITAL OSTEOPETROSIS; IA RATS; OSTEOCLASTS; CALVES AB The radiographic and pathologic findings of two Peruvian Paso foals with osteopetrosis are described. Both foals, one male and one female, presented with respiratory difficulty, brachygnathia and failure to rise after birth. Both foals were mildly anemic, hypogammaglobulinemic and had elevations in serum alkaline phosphatase. Increased medullary bone opacity was noted on radiographs of the extremities, spine and skull in both foals. A lack of normal cortical:medullary bone distinction was evident radiographically. The medullary primary spongiosa appeared to run in parallel columns away from the physes of all long bones and the vertebrae. This created a distinctive hour glass appearance to the osteopetrotic bones. One foal developed a bacterial pneumonia. Both foals were euthanized due to failure to thrive. Histopathology and electron microscopy documented these foals to have normal osteoclastic numbers but lack normal ruffled borders, lack of a clear zone and normal lysosomal numbers indicative of cellular dysfunction. These clinical, radiographic and pathologic findings are similar to the juvenile, lethal autosomal recessive form of osteopetrosis described in humans. Osteopetrosis has not been previously described in a female foal. C1 LAWRENCE LIVERMORE NATL LAB,SCH VET MED,DEPT COMPARAT PATHOL,DAVIS,CA 95616. LAWRENCE LIVERMORE NATL LAB,SCH VET MED,DEPT SURG SCI,DAVIS,CA 95616. LAWRENCE LIVERMORE NATL LAB,SCH VET MED,DEPT RADIOL SCI,DAVIS,CA 95616. UNIV FLORIDA,COLL VET MED,DEPT COMPARAT & EXPTL PATHOL,GAINESVILLE,FL 32610. UNIV FLORIDA,COLL VET MED,DEPT SMALL ANIM CLIN SCI,GAINESVILLE,FL 32610. POULOS VET IMAGING,DAVIS,CA 95616. RP BERRY, CR (reprint author), N CAROLINA STATE UNIV,COLL VET MED,DEPT ANAT PHYSIOL SCI & RADIOL,RALEIGH,NC 27606, USA. NR 22 TC 2 Z9 2 U1 0 U2 2 PU AMER COLL VETERINARY RADIOLOGY PI RALEIGH PA 2520 BEECHRIDGE RD, RALEIGH, NC 27608 SN 1058-8183 J9 VET RADIOL ULTRASOUN JI Vet. Radiol. Ultrasound PD SEP-OCT PY 1994 VL 35 IS 5 BP 355 EP 361 DI 10.1111/j.1740-8261.1994.tb02054.x PG 7 WC Veterinary Sciences SC Veterinary Sciences GA PJ717 UT WOS:A1994PJ71700004 ER PT J AU SAIERS, JE HORNBERGER, GM LIANG, LY AF SAIERS, JE HORNBERGER, GM LIANG, LY TI FIRST-ORDER AND SECOND-ORDER KINETICS APPROACHES FOR MODELING THE TRANSPORT OF COLLOIDAL PARTICLES IN POROUS-MEDIA SO WATER RESOURCES RESEARCH LA English DT Article ID SUSPENDED PARTICLES; BROWNIAN PARTICLES; FLOW CONDITIONS; DOUBLE-LAYER; PACKED-BEDS; DEPOSITION; MOBILIZATION; FILTRATION; ADSORPTION; DYNAMICS AB We present results from experiments on the migration of inorganic colloids through laboratory columns containing clean quartz sand. Particle retention on the quartz collectors was found to be substantially less in experiments using negatively charged silica (SiO2) colloids than in experiments using positively charged anatase (TiO2) or boehmite (AlOOH) colloids. Analysis of these data with respect to two different advection-dispersion models indicates that deposition of colloidal silica follows a first-order, reversible kinetics process, while deposition of both anatase and boehmite is more closely depicted by second-order kinetics. Fitted values of the rate constant used to describe particle attachment vary consistently with the mean grain size of the sand and, for anatase and boehmite, are within a factor of 2 of the values predicted on the basis of colloid filtration theory. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. RP SAIERS, JE (reprint author), UNIV VIRGINIA,DEPT ENVIRONM SCI,CLARK HALL,CHARLOTTESVILLE,VA 22903, USA. RI Liang, Liyuan/O-7213-2014 OI Liang, Liyuan/0000-0003-1338-0324 NR 37 TC 85 Z9 91 U1 2 U2 10 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1994 VL 30 IS 9 BP 2499 EP 2506 DI 10.1029/94WR01046 PG 8 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA PE742 UT WOS:A1994PE74200002 ER PT J AU NICHOLL, MJ GLASS, RJ WHEATCRAFT, SW AF NICHOLL, MJ GLASS, RJ WHEATCRAFT, SW TI GRAVITY-DRIVEN INFILTRATION INSTABILITY IN INITIALLY DRY NONHORIZONTAL FRACTURES SO WATER RESOURCES RESEARCH LA English DT Article ID WETTING FRONT INSTABILITY; HELE-SHAW CELLS; POROUS-MEDIA; STABILITY ANALYSIS; MOVEMENT; ROCK AB Experimental evidence demonstrating gravity-driven wetting front instability in an initially dry natural fracture is presented. An experimental approach is developed using a transparent analog rough-walled fracture to explore gravity-driven instability. Three different boundary conditions were observed to produce unstable fronts in the analog fracture: application of fluid at less than the imbibition capacity, inversion of a density-stratified system, and redistribution of flow at the cessation of stable infiltration. The redistribution boundary condition (analogous to the cessation of ponded infiltration) is considered in a series of systematic experiments. Gravitational gradient and magnitude of the fluid input were varied during experimentation. Qualitative observations imply that finger development is strongly correlated to the structure of the imbibition front at the onset of flow redistribution. Measurements of fingertip velocity are used to develop a first-order relationship with fingertip length. Measured finger width is compared to theoretical predictions based on linear stability theory. C1 UNIV NEVADA,DEPT GEOL SCI,RENO,NV 89557. RP NICHOLL, MJ (reprint author), SANDIA NATL LABS,CTR GEOSCI,DEPT 6115,ALBUQUERQUE,NM 87185, USA. NR 28 TC 77 Z9 81 U1 0 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1994 VL 30 IS 9 BP 2533 EP 2546 DI 10.1029/94WR00164 PG 14 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA PE742 UT WOS:A1994PE74200005 ER PT J AU MCNAB, WW NARASIMHAN, TN AF MCNAB, WW NARASIMHAN, TN TI MODELING REACTIVE TRANSPORT OF ORGANIC-COMPOUNDS IN GROUNDWATER USING A PARTIAL REDOX DISEQUILIBRIUM APPROACH SO WATER RESOURCES RESEARCH LA English DT Article ID HETEROGENEOUS CHEMICAL-REACTIONS; MULTICOMPONENT MASS-TRANSPORT; NUMERICAL ALGORITHM; ANOXIC GROUNDWATER; AROMATIC-COMPOUNDS; SOLUTE TRANSPORT; SHALLOW SAND; POROUS-MEDIA; AQUIFER; LANDFILL AB The chemical transformation of organic contaminants in natural groundwater systems is clearly dependent upon local geochemistry which determines the thermodynamically favorable degradation reactions and the nature of local microbial populations. Conversely, groundwater geochemistry may be impacted Significantly in terms of pH and redox couple speciation by the chemical transformation of sufficient quantities of organic compounds. Therefore an understanding of the coupling between degradation reactions, local geochemistry, and chemical transport is essential in predicting the chemical evolution of contaminated aquifers. Equilibrium-based reactive chemical transport models are usually:not utilized for problems' involving the transport of degradable organic compounds due to slow reaction kinetics and the persistence of intermediate degradation products. In this study we propose a reactive geochemical transport model which considers these types of degradation reactions. An expert system approach is used to postulate a set of sequential, first-order degradation reactions for the organic compounds based upon thermodynamic considerations and user-defined rules. Redox disequilibrium provides the driving force for the abiotic or microbially mediated transformation of the organic compounds as well as the associated response of groundwater geochemistry. Coupling between local inorganic geochemistry and reacting organic compounds is achieved by assuring conservation of operational valence and mass balance. The composite geochemical model is in turn coupled with an integral finite difference transport algorithm using a two-step sequential Solution approach. The transport equation is solved separately for each inorganic aqueous species, complex, and dissolved organic species, allowing a high degree of flexibility in problem definition. We apply the model to an illustrative example problem concerning the introduction of aromatic hydrocarbons and chlorinated ethenes into an initially oxidizing aquifer. Modeling results agree well qualitatively with field and laboratory observations reported in the literature in terms of degradation patterns and the effects on groundwater geochemistry. RP MCNAB, WW (reprint author), UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,DIV EARTH SCI,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 58 TC 56 Z9 56 U1 1 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1994 VL 30 IS 9 BP 2619 EP 2635 DI 10.1029/94WR01305 PG 17 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA PE742 UT WOS:A1994PE74200012 ER PT J AU MEYER, PD VALOCCHI, AJ EHEART, JW AF MEYER, PD VALOCCHI, AJ EHEART, JW TI MONITORING NETWORK DESIGN TO PROVIDE INITIAL DETECTION OF GROUNDWATER CONTAMINATION SO WATER RESOURCES RESEARCH LA English DT Article ID TRANSFORM GALERKIN TECHNIQUE; SOLUTE TRANSPORT; HYDRAULIC CONDUCTIVITY; TRACER TEST; SAMPLING DESIGN; MASS-TRANSPORT; CAPE-COD; MODEL; FLOW; OPTIMIZATION AB The design of a monitoring network to provide initial detection of groundwater contamination at a waste disposal facility is complicated by uncertainty in both the characterization of the subsurface and the nature of the contaminant source. In addition, monitoring network design requires the resolution of multiple conflicting objectives. A method is presented that incorporates system uncertainty in monitoring network design and provides network alternatives that are noninferior with respect to several objectives. Monte Carlo simulation of groundwater contaminant transport is the method of uncertainty analysis. The random inputs to the simulation are the hydraulic conductivity field and the contaminant source location. The design objectives considered are (1) minimize the number of monitoring wells, (2) maximize the probability of detecting a contaminant leak, and (3) minimize the expected area of contamination at the time of detection. The network design problem is formulated as a multiobjective, integer programming problem and is solved using simulated annealing. An application of the method illustrates the configurations of noninferior network solutions and the trade-offs between objectives. The probability of detection can be increased either by using more monitoring wells or by locating the wells farther from the source. The latter case results in an increase in the average area of the detected contaminant plumes at the time of initial detection. If monitoring is carried out very close to the contaminant source to reduce the expected area of a detected plume, a large number of wells are required to provide a high probability of detection. A sensitivity analysis showed that the predicted performance of a given number of wells decreases significantly as the heterogeneity of the porous medium increases. In addition, a poor estimate of hydraulic conductivity was shown to result in optimistic estimates of network performance. In general, the trade-offs between monitoring objectives are an important factor in network design unless the cost (as expressed by the number of monitoring wells) is of limited concern. C1 UNIV ILLINOIS, DEPT CIVIL ENGN, URBANA, IL 61801 USA. RP MEYER, PD (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. OI Meyer, Philip/0000-0002-8714-4693 NR 44 TC 101 Z9 102 U1 0 U2 8 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0043-1397 J9 WATER RESOUR RES JI Water Resour. Res. PD SEP PY 1994 VL 30 IS 9 BP 2647 EP 2659 DI 10.1029/94WR00872 PG 13 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA PE742 UT WOS:A1994PE74200014 ER PT J AU WUOSMAA, AH AF WUOSMAA, AH TI MANY-PARTICLE DECAYS OF ALPHA-CHAIN STRUCTURES IN MG-24 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article; Proceedings Paper CT 2nd International Conference on Atomic and Nuclear Clusters CY JUN 28-JUL 02, 1993 CL SANTORINI, GREECE SP INST NUCL PHYS, DEMOKRITOS, GREECE, HAHN MELINER INST ID CLUSTER MODEL AB We have searched for evidence of exotic cluster configurations in Mg-24 resembling a linear chain of alpha particles in various many-particle final states of the C-12+C-12 system, including C-12(0(2)(+))+C-12(0(2)(+)) and Be-8+O-16*(4 alpha). Such configurations are predicted to occur by a number of different theoretical models of the structure of Mg-24. An array of highly segmented double-sided silicon strip detectors permits detailed, high resolution reconstruction of these many charged-particle final states. RP WUOSMAA, AH (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 12 TC 20 Z9 20 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PD SEP PY 1994 VL 349 IS 3-4 BP 249 EP 253 DI 10.1007/BF01288969 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PG396 UT WOS:A1994PG39600012 ER PT J AU POPLE, JS CLARKE, NM FULTON, BR LEDDY, MJ MURGATROYD, JT CHAN, Y STOKSTAD, RG RAE, WDM CATFORD, WN FOX, SP GYAPONG, GJ WATSON, DL BENNETT, SJ AF POPLE, JS CLARKE, NM FULTON, BR LEDDY, MJ MURGATROYD, JT CHAN, Y STOKSTAD, RG RAE, WDM CATFORD, WN FOX, SP GYAPONG, GJ WATSON, DL BENNETT, SJ TI THE BREAKUP OF MG-24 INTO O-16 AND BE-8 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article; Proceedings Paper CT 2nd International Conference on Atomic and Nuclear Clusters CY JUN 28-JUL 02, 1993 CL SANTORINI, GREECE SP INST NUCL PHYS, DEMOKRITOS, GREECE, HAHN MELINER INST ID FISSION AB The breakup of Mg-24 into O-16 and Be-8 fragments has been studied using the reactions C-12(Mg-24,(OBe)-O-16-Be-8) C-12 and C-12(Ne-20, (OBe)-O-16-Be-8) Be-8. In the latter case, discrete states are observed near 24-28 MeV of excitation in Mg-24 and the yield from this reaction is an order of magnitude greater than that of the former. This implies the excited configuration populated in Mg-24 is favoured by the transfer of an alpha-particle and would therefore suggest an association with a 4-particle 4-hole configuration. This suggests a link with the octupole stabilised deformed minimum which appears in Nilsson-Strutinsky calculations of the potential energy surface in Mg-24, and also with the alpha- O-16 - alpha structure predicted in cranked cluster model calculations. In the excitation spectrum no states appear above 31 MeV indicating a possible band termination in disagreement with recent results using the O-16 + C-12 reaction. These results are discussed in terms of the Harvey model. C1 UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA. UNIV OXFORD,OXFORD,ENGLAND. UNIV SURREY,GUILDFORD GU2 5XH,SURREY,ENGLAND. UNIV YORK,YORK YO1 5DD,N YORKSHIRE,ENGLAND. WAYNE STATE UNIV,DETROIT,MI 48202. NR 8 TC 3 Z9 3 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PD SEP PY 1994 VL 349 IS 3-4 BP 349 EP 350 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PG396 UT WOS:A1994PG39600035 ER PT J AU CARJAN, N SEROT, O STROTTMAN, D AF CARJAN, N SEROT, O STROTTMAN, D TI TIME-DEPENDENT SCHRODINGER APPROACH TO SUBBARRIER FISSION SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article; Proceedings Paper CT 2nd International Conference on Atomic and Nuclear Clusters CY JUN 28-JUL 02, 1993 CL SANTORINI, GREECE SP INST NUCL PHYS, DEMOKRITOS, GREECE, HAHN MELINER INST ID EMISSION; SCALES; DECAY AB The time-dependent Schrodinger equation for the fission of At-213 through a one-dimensional potential barrier was solved numerically within a finite spatial grid. Several initial quasi-stationary vibrational states at and below the top of the barrier were considered. The time dependence of the decay rate lambda(t) was calculated. The non-exponential evolution of the process in the very early stages (less than or equal to 10(-20) s) differs considerably from the asymptotic (stationary) one. Fission is therefore delayed by the sum of this preexponential time, of the tunneling time and of the time necessary for the descent from the outer turning point to the scission point. These non-dissipative quantum times play the same role as the classical transient times usually included in the analyses of experimental data on pre-scission emission of light particles and gamma rays. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP CARJAN, N (reprint author), CEN BORDEAUX GRADIGNAN,F-33175 GRADIGNAN,FRANCE. NR 14 TC 12 Z9 12 U1 1 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PD SEP PY 1994 VL 349 IS 3-4 BP 353 EP 355 DI 10.1007/BF01288994 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA PG396 UT WOS:A1994PG39600037 ER PT J AU SCHNEDERMANN, E AF SCHNEDERMANN, E TI THE INVERSE LAPLACE TRANSFORM AS THE ULTIMATE TOOL FOR TRANSVERSE MASS-SPECTRA SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID EXPONENTIAL RELAXATION RATES; SINGULAR SYSTEM-ANALYSIS; TEMPERATURE RETRIEVAL; DISCRETE-DATA; COLLISIONS; RESOLUTION; RECOVERY; PIONS; O-16 AB New high statistics data from the second generation of ultrarelativistic heavy-ion experiments open up new possibilities in terms of data analysis. To fully utilize the potential we propose to analyze the m(perpendicular-to)-spectra of hadrons using the inverse Laplace transform. The problems with its inherent ill-definedness can be overcome and several applications in other fields like biology, chemistry or optics have already shown its feasibility. Moreover the method also promises to deliver upper bounds on the total information content of the spectra, which is of big importance for all other means of analysis. Here we compute several Laplace inversions from different thermal scenarios both analytically and numerically to test the efficiency of the method. Especially the case of a two component structure, related to a possible first order phase transition to a quark gluon plasma, is closer investigated and it is shown that at least a signal to noise ratio of 10(4) is necessary to resolve two individual components. RP SCHNEDERMANN, E (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 29 TC 6 Z9 6 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PD SEP PY 1994 VL 64 IS 1 BP 85 EP 90 DI 10.1007/BF01557238 PG 6 WC Physics, Particles & Fields SC Physics GA PJ641 UT WOS:A1994PJ64100010 ER PT J AU YANG, SH KNICKELBEIN, MB AF YANG, SH KNICKELBEIN, MB TI PHOTOIONIZATION STUDIES OF TRANSITION-METAL CLUSTERS - IONIZATION-POTENTIALS OF SCNO (N=5-36) SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID ELECTRONIC SHELL STRUCTURE; GAS VANDERWAALS COMPLEXES; GEOMETRIC STRUCTURE; NICKEL CLUSTERS; OXIDE CLUSTERS; ATOM CLUSTERS; IRON; THRESHOLD; PARTICLES; SPECTRA AB The photoionization efficiency (PIE) spectra and ionization potentials are reported for scandium cluster monoxides (Sc(n)O, n = 5-36). As found for other transition metal clusters, strong dependence of ionization potential on cluster size is found for small clusters, with the ionization potentials of larger clusters decreasing relatively smoothly with increasing size. The IPs are 0.6-0.8 eV lower than that predicted by conducting spherical droplet model. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP YANG, SH (reprint author), HONG KONG UNIV SCI & TECHNOL,DEPT CHEM,CLEAR WATER BAY,KOWLOON,HONG KONG. OI Yang, Shihe/0000-0002-6469-8415 NR 46 TC 17 Z9 17 U1 0 U2 4 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0178-7683 J9 Z PHYS D ATOM MOL CL JI Z. Phys. D-Atoms Mol. Clusters PD SEP PY 1994 VL 31 IS 3 BP 199 EP 203 PG 5 WC Physics, Atomic, Molecular & Chemical SC Physics GA PE641 UT WOS:A1994PE64100010 ER PT J AU GILBERT, TL AF GILBERT, TL TI BY THE GRACE OF GUILE - THE ROLE OF DECEPTION IN NATURAL-HISTORY AND HUMAN AFFAIRS - RUE,LD SO ZYGON LA English DT Book Review DE APPEARANCE; DECEPTION; EVOLUTION; GUILE; MORALITY; MYTH; NIHILISM; NOBLE LIE; PERSONAL WHOLENESS; REALITY; SOCIAL COHERENCE; TRUTH C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP GILBERT, TL (reprint author), CHICAGO CTR RELIG & SCI,1100 E 55TH ST,CHICAGO,IL 60615, USA. NR 1 TC 0 Z9 0 U1 1 U2 2 PU BLACKWELL PUBLISHERS PI CAMBRIDGE PA 350 MAIN STREET, STE 6, CAMBRIDGE, MA 02148-5023 SN 0591-2385 J9 ZYGON JI Zygon PD SEP PY 1994 VL 29 IS 3 BP 417 EP 424 DI 10.1111/j.1467-9744.1994.tb00680.x PG 8 WC Social Issues; Religion SC Social Issues; Religion GA PD776 UT WOS:A1994PD77600015 ER PT J AU RIDDIFORD, A AF RIDDIFORD, A TI THE COSMIC SELF - A PENETRATING LOOK AT TODAYS NEW-AGE MOVEMENTS - PETERS,T SO ZYGON LA English DT Book Review DE BOHM,DAVID; MYSTICISM; MEDITATION; NEW AGE; VEDANTA AB Responding to Ted Peters's The Cosmic Self, the author finds parallels and dissonances between New Age assertions and traditional mysticism, East and West. The comprehensive consciousness and interconnectedness of life are addressed by various mysticisms in their search for spiritual realities. However, many of the most recent movements are distinguished by superficiality. C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. NR 30 TC 0 Z9 0 U1 0 U2 1 PU BLACKWELL PUBLISHERS PI CAMBRIDGE PA 350 MAIN STREET, STE 6, CAMBRIDGE, MA 02148-5023 SN 0591-2385 J9 ZYGON JI Zygon PD SEP PY 1994 VL 29 IS 3 BP 437 EP 446 DI 10.1111/j.1467-9744.1994.tb00682.x PG 10 WC Social Issues; Religion SC Social Issues; Religion GA PD776 UT WOS:A1994PD77600020 ER PT J AU MEDFORTH, CJ SENGE, MO FORSYTH, TP HOBBS, JD SHELNUTT, JA SMITH, KM AF MEDFORTH, CJ SENGE, MO FORSYTH, TP HOBBS, JD SHELNUTT, JA SMITH, KM TI CONFORMATIONAL STUDY OF 2,3,5,7,8,12,13,15,17,18-DECAALKYLPORPHYRINS SO INORGANIC CHEMISTRY LA English DT Article ID RESONANCE RAMAN-SPECTRA; NONPLANAR NICKEL(II) PORPHYRINS; FORCE-FIELD; DISTORTION; PLANAR; OCTAETHYLPORPHYRIN; FLEXIBILITY; MODES; N-15 AB X-ray crystal structures are reported for two sterically crowded porphyrins: 3,5,7,13,15,17-hexaethyl-2,8,12,18-tetramethylporphyrin (6, H2DAP) and (3,5,7,13,15,17-hexaethyl-2,8,12,18-tetramethylporphinato)nickel?? (II) (Ni6, NiDAP). In the NiDAP structure, steric crowding is relieved by the usual mechanism of the porphyrin adopting a nonplanar conformation. The crystal structure of H2DAP is unusual, as it shows an essentially planar conformation of the porphyrin macrocycle. In this case, steric crowding of the meso and pyrrole ethyl groups is relieved by a novel elongation of the macrocycle along the 5,15 axis. A detailed study is made of the solution conformations of H2DAP, NiDAP, and the corresponding zinc(II) complex (ZnDAP), using optical spectroscopy, variable-temperature proton NMR spectroscopy, and molecular mechanics calculations. It is suggested that the two species observed in low-temperature proton NMR studies of H2DAP and ZnDAP correspond to cis and trans conformations of the methyl groups of the meso ethyls, and not the syn and anti structures proposed previously (Maruyama; et al. J. Phys. Org. Chem. 1988, 1, 63). Crystal data: H2DAP (6), C36H46N4, M(r) = 534.8, monoclinic, P2(1)/c, a = 6.458(4) angstrom, b = 16.58(2) angstrom, c = 13.778(7) angstrom, beta = 99.78(4)-degrees, V = 1,454(2) angstrom3, Z = 2, D(x) = 1.222 Mg.m-3, lambda(Mo Kalpha) = 0.710 73 angstrom, mu = 0.072 mm-1, 130 K, R = 0.069 for 1769 reflections with F > 4.0sigma(F); NiDAP (Ni6), C36H44N4Ni, M(r) = 591.5, monoclinic, P2(1)/c, a = 14.350(8) angstrom, b = 16.043(6) angstrom, c = 15.049(6) angstrom, beta = 117.12(3)-degrees, V = 3,083(2) angstrom3, Z = 4, D(x) = 1.274 Mg.m-3, lambda(Mo Kalpha) = 0.710 73 angstrom, mu = 0.660 mm-1, 130 K, R = 0.072 for 3717 reflections with F > 4.0sigma(F). C1 SANDIA NATL LABS,FUEL SCI DEPT 6211,ALBUQUERQUE,NM 87185. RP MEDFORTH, CJ (reprint author), UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616, USA. RI Shelnutt, John/A-9987-2009; Senge, Mathias/F-1504-2011; Medforth, Craig/D-8210-2013; REQUIMTE, FMN/M-5611-2013; REQUIMTE, UCIBIO/N-9846-2013; Smith, Kevin/G-1453-2011 OI Shelnutt, John/0000-0001-7368-582X; Senge, Mathias/0000-0002-7467-1654; Medforth, Craig/0000-0003-3046-4909; Smith, Kevin/0000-0002-6736-4779 NR 33 TC 39 Z9 39 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 31 PY 1994 VL 33 IS 18 BP 3865 EP 3872 DI 10.1021/ic00096a008 PG 8 WC Chemistry, Inorganic & Nuclear SC Chemistry GA PF041 UT WOS:A1994PF04100008 ER PT J AU LANG, RF JU, TD KISS, G HOFF, CD BRYAN, JC KUBAS, GJ AF LANG, RF JU, TD KISS, G HOFF, CD BRYAN, JC KUBAS, GJ TI OXIDATIVE ADDITION OF DISULFIDES TO THE COMPLEX W(CO)3(PHEN)(ETCN) - SYNTHESIS, STRUCTURE, AND REACTIVITY OF W(CO)2(PHEN)(SR)2 (R=PH, ME, CH2PH, TBU PHEN = 1,10-PHENANTHROLINE) COORDINATIVELY UNSATURATED COMPLEXES OF TUNGSTEN(II) THAT REVERSIBLY BIND CO AND OTHER LIGANDS SO INORGANIC CHEMISTRY LA English DT Article ID RAY CRYSTAL-STRUCTURES; CARBON BOND STRENGTHS; METAL-HYDROGEN; DISSOCIATION; MONONUCLEAR; MOLYBDENUM; CHEMISTRY AB The complex W(CO)3(phen)(EtCN) undergoes oxidative addition with disulfides forming the formally 16-electron complexes W(CO)2(phen)(SR)2(R = Ph, (t)Bu, Me, benzyl). The reactions proceed through intermediates identified spectroscopically as the coordinated disulfide complexes. The rate of oxidative addition of coordinated disulfides is in the order (t)BuSSBu(t) << MeSSMe < PhCH2SSCH2Ph < PhSSPh. The complexes W(CO)2(phen)(SR)2 undergo ligand addition, ligand substitution, and thiol/thiolate exchange reactions. Variable-temperature equilibrium studies yielded thermodynamic parameters for binding of CO to W(CO)2(phen)(SR)2: R = Ph, DELTAH = -7.2 +/- 0.5 kcal/mol, DELTAS = -29 +/- 3.5 cal/(mol deg); R = (t)Bu, DELTAH = -9.5 +/- 0.5 kcal/mol, DELTAS = -41 +/- 3.5 cal/(mol deg). Reaction with trimethylphosphine yields an equilibrium mixture of the 18-electron adduct W(CO)2(phen)(PMe3)(SPh)2 as well as the 16-electron monocarbonyl complex W(CO)(phen)(PMe3)(SPh)2. Addition of trimethyl phosphite yields only W(CO)(phen)(P(OMe)3)(SPh)2. Pyridine, propionitrile, hydrogen, and THF do not bind to the W(II) complexes. Reaction of W(CO)2(phen)(S(t)Bu)2 with 1 equiv of thiophenol yields W(CO)2(phen)(S(t)Bu)(SPh), which reacts with additional thiophenol to yield W(CO)2(phen)(SPh)2. Reaction with excess hydrogen sulfide yields W(CO)2(phen)(SH)2, which reacts further with thiophenol to yield W(CO)2(phen)(SPh)2. Crystal structures are reported for W(CO)2(phen)(SPh)2 and W(CO)(Phen)(P(OMe)3(SPh)2. C1 UNIV MIAMI,DEPT CHEM,CORAL GABLES,FL 33124. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 24 TC 31 Z9 31 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 31 PY 1994 VL 33 IS 18 BP 3899 EP 3907 DI 10.1021/ic00096a013 PG 9 WC Chemistry, Inorganic & Nuclear SC Chemistry GA PF041 UT WOS:A1994PF04100013 ER PT J AU BARNHART, DM CLARK, DL GORDON, JC HUFFMAN, JC WATKIN, JG AF BARNHART, DM CLARK, DL GORDON, JC HUFFMAN, JC WATKIN, JG TI OLIGOMERIZATION OF METAL-OXYGEN BONDS IN THORIUM ALKOXIDE CHEMISTRY - X-RAY CRYSTAL-STRUCTURES OF TH4(O-I-PR)16(PY)2 AND TH2(OCHET2)8(PY)2 SO INORGANIC CHEMISTRY LA English DT Article ID TERT-BUTOXIDE COMPLEXES; REACTIVITY; MOLYBDENUM; ACTIVATION AB Reaction of the thorium(IV) metallacycle [(Me3Si)2N]2Th(CH2SiMe2NSiMe3) with 4 equiv of 2-propanol in toluene generates a homoleptic thorium isopropoxide [Th(O-i-Pr4]x (1) in good yield. In contrast, the reaction of the thorium metallacycle with 4 equivalents of 2-propanol in toluene, followed by the addition of excess pyridine and crystallization from hexane, yields the tetrameric complex Th4(O-i-Pr)16(py)2 (2). However, if compound 1 is allowed to ''age'' for 2 days, no reaction with pyridine and the aged material is observed. Compound 2 may also be prepared by the metathesis reaction of ThBr4(THF)4 with 4 equiv of potassium isopropoxide in THF followed by the addition of excess pyridine. An X-ray crystal structure of 2 revealed a zigzag chain of four thorium atoms comprised of a dimer of edge-shared bioctahedra joined by one axial and one equatorial bridging alkoxide ligand. The local coordination geometry about each thorium atom is that of a distorted octahedron, and the thorium atoms at each end of the zigzag chain are capped with a pyridine ligand. Average terminal and bridging Th-O distances are 2.172 and 2.420 angstrom. The Th-N distance is 2.740 angstrom, and nonbonding Th--Th distances average 4.031 angstrom. A similar reaction between [(Me3Si)2N]2Th(CH2SiMe2NSiMe3) and 4 equiv of pentan-3-ol in toluene followed by addition of excess pyridine and crystallization from hexane yields the dimeric complex Th2(OCHEt2)8(py)2 (3). An X-ray crystal structure of 3 revealed a centrosymmetric edge-sharing bioctahedron with average Th-O, Th-mu-O, Th-N, and Th--Th distances of 2.170, 2.427, 2.730, and 4.055 angstrom, respectively. Crystal data for 2 (at - 170-degrees-C): Triclinic space group P1BAR, a = 11.211(2) angstrom, b = 18.689(4) angstrom, c = 9.984(2) angstrom, alpha = 101.65(1)-degree, beta = 108.57(1)-degree, gamma = 75.60(1)-degree, V = 1903.52 angstrom3, Z = 1, d(calc) = 1.772 g cm-3, R(F) = 0.0441, R(w)(F) = 0.0453. Crystal data for 3 (at -70-degrees-C): Triclinic space group P1BAR, a = 11.302(3) angstrom, b = 11.458(3) angstrom, c = 14.191(3) angstrom, alpha = 113.02(2)-degrees, beta = 92.50(2)-degrees, gamma = 115.82(2)-degrees, V = 1470.9 angstrom3, Z = 1, d(calc) = 1.345 g cm-3, R(F) = 0.0448, R(w)(F) = 0.0498. C1 LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP CST-3,LOS ALAMOS,NM 87545. INDIANA UNIV,DEPT CHEM,CTR MOLEC STRUCT,BLOOMINGTON,IN 47405. RI Clark, David/A-9729-2011 NR 27 TC 13 Z9 13 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 31 PY 1994 VL 33 IS 18 BP 3939 EP 3944 DI 10.1021/ic00096a018 PG 6 WC Chemistry, Inorganic & Nuclear SC Chemistry GA PF041 UT WOS:A1994PF04100018 ER PT J AU CAI, Y CHEN, SS ROTE, DM COFFEY, HT AF CAI, Y CHEN, SS ROTE, DM COFFEY, HT TI VEHICLE GUIDEWAY INTERACTION FOR HIGH-SPEED VEHICLES ON A FLEXIBLE GUIDEWAY SO JOURNAL OF SOUND AND VIBRATION LA English DT Article AB Dynamic interactions between the vehicle and guideway of a high speed ground transportation system based on magnetically levitated (maglev) vehicles were studied, with an emphasis on the effects of vehicle and guideway parameters. Two dynamic models for the vehicle are presented. In one model, the vehicle is considered a moving force travelling at various speeds on a simply supported single- or two-span beam(s). In the second model, the vehicle is considered to be one-dimensional, with two degrees of freedom, representing the primary and secondary suspensions of the vehicle with lumped masses, linear springs, and dampings. The Bernoulli-Euler beam equation is used to model the characteristics of a flexible guideway, and the guideway synthesis is based on a modal analysis method. Analyses have been performed to understand response characteristics under various loading conditions, and provide some benchmark data for verification of existing comprehensive computer programs and some basic design guidelines for maglev systems. RP CAI, Y (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 13 TC 49 Z9 68 U1 3 U2 9 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0022-460X J9 J SOUND VIB JI J. Sound Vibr. PD AUG 31 PY 1994 VL 175 IS 5 BP 625 EP 646 DI 10.1006/jsvi.1994.1350 PG 22 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA PE396 UT WOS:A1994PE39600004 ER PT J AU BLACKBURN, NJ BARR, ME WOODRUFF, WH VANDEROOOST, J DEVRIES, S AF BLACKBURN, NJ BARR, ME WOODRUFF, WH VANDEROOOST, J DEVRIES, S TI METAL-METAL BONDING IN BIOLOGY - EXAFS EVIDENCE FOR A 2.5-ANGSTROM COPPER-COPPER BOND IN THE CU-A CENTER OF CYTOCHROME-OXIDASE SO BIOCHEMISTRY LA English DT Article ID ABSORPTION FINE-STRUCTURE; ELECTRON-PARAMAGNETIC RESONANCE; MAGNETIC-CIRCULAR-DICHROISM; STUTZERI N2O REDUCTASE; CURVED-WAVE THEORY; PSEUDOMONAS-STUTZERI; OPTICAL-PROPERTIES; SITE; SPECTROSCOPY; PROTEIN AB Evidence for a direct Cu-Cu bond in the Cu-A center of cytochrome oxidase is reported. Simulation of the X-ray absorption spectrum of a recombinant Cu-A-binding domain of Bacillus subtilis cytochrome oxidase, and comparison with a structurally characterized directly-bonding Cu(1.5)...Cu(1.5) inorganic complex, suggests that a Cu-Cu interaction of 2.5 +/- 0.1 Angstrom together with a short 2.2 Angstrom Cu-S interaction may be present in the Cu-A site. In light of these data, previous interpretations of the EXAFS of a number of cytochrome oxidase and nitrous oxide reductase enzymes which modeled the 2.6 Angstrom interaction as a long Cu-S(methionine) bona are possibly incorrect. A structural model based on the new data is presented which suggests that the Cu-A sites in cytochrome oxidase and N2O reductase are likely composed of a pair of modified type 1 copper centers with one histidine, one cysteine, and one weakly bound ligand (Met and/or Gln) joined by a Cu-Cu bond. C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. FREE UNIV AMSTERDAM,DEPT MICROBIOL,1081 HV AMSTERDAM,NETHERLANDS. DELFT UNIV TECHNOL,DEPT MICROBIOL & ENZYMOL,2628 BC DELFT,NETHERLANDS. RP BLACKBURN, NJ (reprint author), OREGON GRAD INST SCI & TECHNOL,DEPT CHEM BIOCHEM & MOLEC BIOL,POB 91000,PORTLAND,OR 97291, USA. FU NINDS NIH HHS [R01 NS-27583] NR 45 TC 130 Z9 131 U1 2 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 30 PY 1994 VL 33 IS 34 BP 10401 EP 10407 DI 10.1021/bi00200a022 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PE328 UT WOS:A1994PE32800022 PM 8068678 ER PT J AU KLESS, H ORENSHAMIR, M MALKIN, S MCINTOSH, L EDELMAN, M AF KLESS, H ORENSHAMIR, M MALKIN, S MCINTOSH, L EDELMAN, M TI THE D-E REGION OF THE D1 PROTEIN IS INVOLVED IN MULTIPLE QUINONE AND HERBICIDE INTERACTIONS IN PHOTOSYSTEM-II SO BIOCHEMISTRY LA English DT Article ID PHOTOSYNTHETIC REACTION-CENTER; REACTION CENTER POLYPEPTIDES; SITE-SPECIFIC MUTAGENESIS; RHODOBACTER-SPHAEROIDES; BINDING-SITE; RHODOPSEUDOMONAS-VIRIDIS; NICHE; PLASTOQUINONE; DEGRADATION; MUTATIONS AB The region between helices D and E (D-E region) of the D1 protein of photosystem II (PSII) is exposed at the stromal side of the photosynthetic membrane, contains the secondary plastoquinone (Q(B)) binding niche, and is involved in processes at the reducing side of PSII. The role of the D-E region was studied in 27 site-directed mutants generated in the psbAII gene of the cyanobacterium Synechocystis sp. PCC 6803. The photochemical performance of the modified PSII reaction centers was assessed with respect to photoautotrophic growth, oxygen evolution, fluorescence induction, and herbicide inhibition. A few mutations, located at positions presumably involved in essential interactions in the Q(B) binding niche, greatly interfered with PSII performance. On the other hand, mutations in the presumptive loop region between helices D and de resulted in relatively minor effects, indicating a flexible region not critical for photochemical function. Indeed, although more than 80% of the D-E region is phylogenetically invariant, the bulk of the mutations affected the measured parameters only moderately. The significance of the conserved residues appears to be in subtle interactions that optimize the thermodynamic balance between some of the redox components of PSII, as indicated by mild changes in the steady state fluorescence. Many mutations modified tolerances to PSII herbicides. The dispersion of these mutations throughout the D-E region indicates the complex nature of the interactions, direct and indirect, affecting herbicide binding in the Q(B) niche. Mutation of codons Ser221 and Ser222 to Leu221 and Ala222 revealed a new location coordinating the herbicide diuron in the D1 protein. Mutational analysis of the D-E region fully supports the widely held analogy in structure and activity between the D1 protein of PSII and the L subunit of the bacterial reaction center. C1 WEIZMANN INST SCI,DEPT PLANT GENET,IL-76100 REHOVOT,ISRAEL. WEIZMANN INST SCI,DEPT BIOCHEM,IL-76100 REHOVOT,ISRAEL. MICHIGAN STATE UNIV,US DOE,PLANT RES LABS,E LANSING,MI 48824. MICHIGAN STATE UNIV,DEPT BIOCHEM,E LANSING,MI 48824. NR 46 TC 43 Z9 44 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 30 PY 1994 VL 33 IS 34 BP 10501 EP 10507 DI 10.1021/bi00200a035 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PE328 UT WOS:A1994PE32800035 PM 8068689 ER PT J AU AURED, M MOLINER, E ALFONSO, M YRUELA, I TOON, SP SEIBERT, M PICOREL, R AF AURED, M MOLINER, E ALFONSO, M YRUELA, I TOON, SP SEIBERT, M PICOREL, R TI PIGMENT STOICHIOMETRY OF THE PHOTOSYSTEM-II REACTION-CENTER FROM HIGHER-PLANTS SO BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS LA English DT Article; Proceedings Paper CT 8th European Bioenergetic Conference (EBEC) CY SEP 12-17, 1994 CL VALENCIA, SPAIN DE CHLOROPHYLL; CHROMATOGRAPHY; FPLC; PHEOPHYTIN; PHOTOSYNTHESIS; REACTION CENTER; PIGMENT STOICHIOMETRY ID PHOTOSYNTHETIC REACTION CENTER; REACTION CENTER COMPLEX; B559 COMPLEX; SPINACH; CYTOCHROME-B-559; CHLOROPHYLL AB A preparation of Photosystem II reaction center complex containing 4 chlorophylls per 2 pheophytins was obtained from three different species of higher plants. A 'standard' reaction center preparation (6 Chl/2 Pheo) was used as starting material. This material was loaded onto a sieve chromatography Superose-6 column run on a FPLC system. Three different sets of fractions were eluted from the column. The first few fractions showed a distinct absorption band at 435 nm and pigment content of 10 Chl per 2 Pheo. The peak fractions did not show a distinct band at 435 nm, but rather a shoulder, and contained 4 Chl per 2 Pheo. The few last fractions exhibited relatively higher absorption at 416 nm, most probably due to higher cytochrome content, but they also contained 4 Chl per 2 Pheo. Similar results were observed when a reaction center preparation of about 5 Chl was loaded onto the Superose-6 column. This indicates that the 'standard' Photosystem II reaction center preparation is heterogenous, composed of 4 Chl reaction centers and contaminants containing higher pigment content. To further validate this conclusion, we obtained a 4 Chl preparation by modification of the 'standard' reaction center purification procedure. After loading this preparation onto the Superose-6 column, one single chromatographic band was obtained, and all fractions contained 4 Chl per 2 Pheo. This strongly suggests that a 4 Chl per 2 Pheo preparation corresponds to that of a native core Photosystem II reaction center preparation. C1 CSIC,ESTAC EXPTL AULA DEI,DEPT PLANT NUTR,E-50080 ZARAGOZA,SPAIN. NATL RENEWABLE ENERGY LAB,PHOTOCONVERS BRANCH,GOLDEN,CO 80401. RI PICOREL, RAFAEL/K-7930-2014; Alfonso, Miguel/L-6970-2014; Yruela, Inmaculada/A-9330-2015 OI PICOREL, RAFAEL/0000-0003-3791-129X; Alfonso, Miguel/0000-0002-8190-5156; Yruela, Inmaculada/0000-0003-3608-4720 NR 18 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0005-2728 J9 BBA-BIOENERGETICS JI Biochim. Biophys. Acta-Bioenerg. PD AUG 30 PY 1994 VL 1187 IS 2 BP 187 EP 190 DI 10.1016/0005-2728(94)90108-2 PG 4 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA PF178 UT WOS:A1994PF17800018 ER PT J AU BHATIA, S ENGELKE, F PRUSKI, M KING, TS AF BHATIA, S ENGELKE, F PRUSKI, M KING, TS TI IN-SITU NMR-STUDIES OF HYDROGEN INTERACTION WITH SUPPORTED RU-GROUP IB BIMETALLIC CATALYSTS SO CATALYSIS TODAY LA English DT Article; Proceedings Paper CT American-Chemical-Society, Petroleum-Chemistry-Division Symposium on Chemistry and Characterization of Metal-Like Catalysts CY AUG 24-27, 1993 CL CHICAGO, IL SP AMER CHEM SOC, PETR CHEM DIV ID ADSORBED HYDROGEN; CARBON-MONOXIDE; SILICA SUPPORT; CU CATALYSTS; COPPER; CHEMISORPTION; RUTHENIUM; ALLOYS; CLUSTERS; SURFACES AB An in situ NMR technique was employed to study hydrogen adsorption on silica supported Ru-Group Ib bimetallic catalysts at pressures up to one atmosphere. Two different hydrogen-on-metal resonances, alpha and beta, were observed. Addition of silver to Ru was found to greatly diminish the relative amount of the weakly bound beta hydrogen. Since silver preferentially populates edge, corner and other defect-like sites, the weakly bound beta was correlated with low coordinated metal atoms. The total hydrogen population on the catalyst remains approximately the same with the addition of copper. The difference in catalytic behavior of Ru, Ru-Cu and Ru-Ag is postulated to be due to the surface segregation induced structure sensitivity of the weakly bound beta hydrogen. C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP BHATIA, S (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM ENGN,AMES,IA 50011, USA. NR 38 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0920-5861 J9 CATAL TODAY JI Catal. Today PD AUG 30 PY 1994 VL 21 IS 1 BP 129 EP 140 DI 10.1016/0920-5861(94)80039-1 PG 12 WC Chemistry, Applied; Chemistry, Physical; Engineering, Chemical SC Chemistry; Engineering GA PF952 UT WOS:A1994PF95200011 ER PT J AU BRANDOW, BH AF BRANDOW, BH TI VALENCE-FLUCTUATION MECHANISM FOR CUPRATE SUPERCONDUCTIVITY SO INTERNATIONAL JOURNAL OF MODERN PHYSICS B LA English DT Review ID HIGH-TC-SUPERCONDUCTORS; HIGH-TEMPERATURE SUPERCONDUCTORS; ANDERSON LATTICE MODEL; COPPER-OXIDE SUPERCONDUCTORS; ANGLE-RESOLVED PHOTOEMISSION; HEAVY-FERMION SYSTEMS; ELECTRON-PHONON INTERACTIONS; CA-CU-O; PENETRATION-DEPTH MEASUREMENTS; TRANSITION-METAL MONOXIDES AB We explore the concept that the above-T-c state is a normal Fermi liquid with strong correlations of the type found in valence-fluctuation and heavy-fermion materials. Experimental evidence and theoretical arguments for this phase are presented. Using an Anderson lattice model Hamiltonian, and a variational many-body formalism, the finite-U mechanism for s-like (full point-group symmetry) pairing is examined in detail. At the mean field or (1/N)(0) level of approximation, the pairing tendency is strongly opposed by a magnetic tendency arising from a Gutzwiller version of hybridization renormalization. pairing does not seem possible for realistic Hamiltonian parameters. This finite-U treatment has, however, now been extended to the (1/N)(1) level of approximation. The lattice aspect is found to play a major and unexpected role here, leading to strong suppression of the magnetic tendency. This refined treatment is now found to provide adequate pairing attraction, for reasonable Hamiltonian parameters. Superconductivity is found only when the charge transfer energy Delta(CT) is quite large, Delta(CT) greater than or similar to U, but there is evidence that acT is indeed of this magnitude in the cuprate materials. Adequate band narrowing (mass enhancement or heaviness) and a very short coherence length ace also obtained, in reasonable agreement with experiment. The quasiparticle interaction at the Fermi surface is strongly repulsive. This provides a reasonable source for the large and linear resistivity, as well as for other aspects of marginal-Fermi-liquid phenomenology. Evidence is found for a strong reduction of T-c due to pair-breaking by the quasiparticle scattering. The main (fully self-consistent) calculations assume in-plane isotropy. However, a simplified calculation with a more realistic (anisotropic) band structure for the CuO2 plane is found to provide a highly anisotropic gap, which may or may not have nodes. There is considerable evidence for such types of gap structure. Because a connection is found here between anomalously short coherence length and anomalously high resistivity, we suggest that this mechanism is also operating within other families of ''exotic'' superconductors, C1 LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA. UPPSALA UNIV, DEPT PHYS, CONDENSED MATTER THEORY GRP, UPPSALA, SWEDEN. MAX PLANCK INST FESTKORPERFORSCH, W-7000 STUTTGART 80, GERMANY. RP BRANDOW, BH (reprint author), LOS ALAMOS NATL LAB, CTR MAT SCI, LOS ALAMOS, NM 87545 USA. NR 199 TC 13 Z9 13 U1 1 U2 1 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-9792 J9 INT J MOD PHYS B JI Int. J. Mod. Phys. B PD AUG 30 PY 1994 VL 8 IS 19 BP 2667 EP 2719 DI 10.1142/S021797929400107X PG 53 WC Physics, Applied; Physics, Condensed Matter; Physics, Mathematical SC Physics GA PL547 UT WOS:A1994PL54700005 ER PT J AU CHANG, KY TINOCO, I AF CHANG, KY TINOCO, I TI CHARACTERIZATION OF A KISSING HAIRPIN COMPLEX DERIVED FROM THE HUMAN-IMMUNODEFICIENCY-VIRUS GENOME SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE TRANSACTIVATION RESPONSE ELEMENT HAIRPIN; RNA RNA INTERACTIONS; ANTISENSE ID TRANSACTIVATION RESPONSE ELEMENT; TRANS-ACTIVATOR GENE; COLE1 ROM PROTEIN; HIV-1 TAR ELEMENT; RNA STEM-LOOPS; ANTISENSE RNA; NMR-SPECTROSCOPY; TYPE-1; REPLICATION; SUPPRESSION AB Base-pair formation between two hairpin loops-a ''kissing'' complex-is an RNA-folding moth that links two elements of RNA secondary structure. It is also a unique protein recognition site involved in regulation of ColE1 plasmid DNA replication. The trans-activation response element (TAR), a hairpin and bulge at the 5' end of the untranslated leader region of the human immunodeficiency virus 1 mRNA, enhances the transcription Of the virus and is necessary for viral replication. Gel electrophoresis and absorbance melting curves indicate that a synthesized RNA hairpin (Tar*-16) with a loop sequence complementary to the TAR loop sequence (CUGGGA) associates specifically with a 16-nucleotide TAR hairpin (Tar-16) to form a stable complex. RNase T1 probing indicates that the three guanines in the Tar-16 loop become inaccessible in the complex. NMR imino proton spectra reveal that 5 base pairs are formed between the two hairpin loops (Tar-16 and Tar*-16); only the adenine at the 3' terminus of the TAR loop does not form a base pair with the 5'-terminal uracil of the complementary loop. A 14-nucleotide hairpin [CCUA-(UCCCAG)UAGG] with a loop sequence complementary to the TAR loop is conserved within the gag gene of human immunodeficiency virus 1. A synthesized RNA hairpin corresponding to this conserved sequence also binds to the Tar-16 hairpin with high affinity. It is possible that the same RNA loop-loop interaction occurs during the viral life cycle. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV STRUCT BIOL,BERKELEY,CA 94720. RP CHANG, KY (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. FU NIGMS NIH HHS [GM 10840] NR 40 TC 89 Z9 89 U1 1 U2 5 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD AUG 30 PY 1994 VL 91 IS 18 BP 8705 EP 8709 DI 10.1073/pnas.91.18.8705 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PE388 UT WOS:A1994PE38800081 PM 8078946 ER PT J AU CHOW, AF LICHTENWALNER, DJ WOOLCOTT, RR GRAETTINGER, TM AUCIELLO, O KINGON, AI BOATNER, LA PARIKH, NR AF CHOW, AF LICHTENWALNER, DJ WOOLCOTT, RR GRAETTINGER, TM AUCIELLO, O KINGON, AI BOATNER, LA PARIKH, NR TI EPITAXIAL KNBO3 THIN-FILMS ON KTAO3, MGAL2O4, AND MGO SUBSTRATES SO APPLIED PHYSICS LETTERS LA English DT Article AB Epitaxial potassium niobate (KNbO3) thin films have been deposited on KTaO3 (100), MgAl2O4 (100), and MgO (100) substrates using ion-beam sputter deposition. X-ray-diffraction results show that KNbO3 films have orthorhombic (110) orientation on all three substrates. Rutherford backscattering channeling analysis of KNbO3 films on KTaO3, MgAl2O4, and MgO exhibits minimum scattering yields (chi(min)) of 7%, 9%, and 18% for the Nb peak, respectively. This illustrates how the quality of epitaxy improves as the lattice mismatch decreases. Prism-coupling measurements reveal near-bulk refractive indices of about 2.27 for TE modes and 2.22 for TM modes for films on each substrate. C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. UNIV N CAROLINA,DEPT PHYS,CHAPEL HILL,NC 27599. RP CHOW, AF (reprint author), N CAROLINA STATE UNIV,DEPT MAT SCI & ENGN,RALEIGH,NC 27695, USA. RI Lichtenwalner, Daniel/D-4396-2009; Boatner, Lynn/I-6428-2013 OI Boatner, Lynn/0000-0002-0235-7594 NR 11 TC 29 Z9 29 U1 1 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 29 PY 1994 VL 65 IS 9 BP 1073 EP 1075 DI 10.1063/1.112129 PG 3 WC Physics, Applied SC Physics GA PE158 UT WOS:A1994PE15800003 ER PT J AU KUNG, AH AF KUNG, AH TI NARROW-BAND MIDINFRARED GENERATION USING KTIOASO4 SO APPLIED PHYSICS LETTERS LA English DT Article ID OPTICAL PARAMETRIC OSCILLATOR; CRYSTALS AB Continuously tunable mid-infrared radiation from 3.0 to 5.3 mum was produced by difference frequency mixing in KTiOAsO4. A photon efficiency of 7% for conversion to 4.4 mum was achieved, providing peak power exceeding 250 kW, and pulse energy of over 0.5 mJ in a 2 nanosecond pulse. An absorption spectrum of CO2 in air with better than 1 cm-1 resolution was obtained simply by scanning the wavelength of one of the input lasers. RP KUNG, AH (reprint author), LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720, USA. RI Kung, Andy/F-7909-2012 NR 17 TC 15 Z9 15 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 29 PY 1994 VL 65 IS 9 BP 1082 EP 1084 DI 10.1063/1.112132 PG 3 WC Physics, Applied SC Physics GA PE158 UT WOS:A1994PE15800006 ER PT J AU LI, Z FOSTER, CM GUO, D ZHANG, H BAI, GR BALDO, PM REHN, LE AF LI, Z FOSTER, CM GUO, D ZHANG, H BAI, GR BALDO, PM REHN, LE TI GROWTH OF HIGH-QUALITY SINGLE-DOMAIN SINGLE-CRYSTAL FILMS OF PBTIO3 SO APPLIED PHYSICS LETTERS LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; THIN-FILMS AB Single-crystal films of PbTiO3 have been deposited on (100) SrTiO3 substrates by metalorganic chemical vapor deposition. X-ray diffraction spectra and transmission electron microscopy images revealed that the development of 90-degrees domains was directly related to the thickness of the film. Single-domain, single-crystal films were obtained for film thickness less than 150 nm. The minimum yields of the films in ion-channeling experiments were only 3 %, similar to that of a perfect single crystal. The ordinary refractive index of the film measured by optical waveguiding experiment was also the same as that of PbTiO3 single crystals. RP LI, Z (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 12 TC 53 Z9 54 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 29 PY 1994 VL 65 IS 9 BP 1106 EP 1108 DI 10.1063/1.112112 PG 3 WC Physics, Applied SC Physics GA PE158 UT WOS:A1994PE15800014 ER PT J AU MOLL, AJ HALLER, EE AGER, JW WALUKIEWICZ, W AF MOLL, AJ HALLER, EE AGER, JW WALUKIEWICZ, W TI DIRECT EVIDENCE OF CARBON PRECIPITATES IN GAAS AND INP SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; P-TYPE GAAS; DOPED GAAS; IMPLANTATION; DIFFUSION AB Raman spectra of carbon-doped GaAs and InP show two peaks which are characteristic of C clusters with sp2 bonding. The peaks are seen in C-implanted GaAs and InP following either rapid thermal annealing or furnace annealing. The peaks are also seen in heavily doped epilayers following furnace annealing. Various mechanisms for C precipitation are discussed. Experimental evidence suggests that the loss of the group V component at the surface during annealing may play a role in the precipitation of C. C1 LAWRENCE BERKELEY LAB,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. RP MOLL, AJ (reprint author), LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720, USA. OI Ager, Joel/0000-0001-9334-9751 NR 18 TC 22 Z9 22 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 29 PY 1994 VL 65 IS 9 BP 1145 EP 1147 DI 10.1063/1.112123 PG 3 WC Physics, Applied SC Physics GA PE158 UT WOS:A1994PE15800027 ER PT J AU ZHANG, XK STUART, JO CLARSON, SJ SABATA, A BEAUCAGE, G AF ZHANG, XK STUART, JO CLARSON, SJ SABATA, A BEAUCAGE, G TI TIME-OF-FLIGHT SECONDARY-ION MASS-SPECTROMETRY OF DEUTERATED LINEAR POLY(DIMETHYLSILOXANE) SO MACROMOLECULES LA English DT Article C1 UNIV CINCINNATI, DEPT MAT SCI & ENGN, CINCINNATI, OH 45221 USA. UNIV CINCINNATI, POLYMER RES CTR, CINCINNATI, OH 45221 USA. ARMCO RES & TECHNOL, MIDDLETOWN, OH 45044 USA. SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. NR 13 TC 12 Z9 12 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 29 PY 1994 VL 27 IS 18 BP 5229 EP 5231 DI 10.1021/ma00096a058 PG 3 WC Polymer Science SC Polymer Science GA PE830 UT WOS:A1994PE83000058 ER PT J AU SMITH, AB AF SMITH, AB TI NEUTRON INTERACTION WITH DOUBLY-MAGIC CA-40 SO NUCLEAR PHYSICS A LA English DT Article DE MEASURED CALCIUM NEUTRON D-SIGMA/D-OMEGA(EL) AND D-SIGMA/D-OMEGA(INEL) 1.5-10 MEV; OPTICAL-STATISTICAL, DISPERSIVE-OPTICAL, AND COUPLED-CHANNEL MODELS AND MODEL SYSTEMATICS; EXTRAPOLATION TO BOUND STATES ID OPTICAL-MODEL ANALYSIS; NUCLEUS ELASTIC-SCATTERING; DISPERSION-RELATION; CROSS-SECTIONS; PB-208; DEPENDENCE; ENERGY AB Differential neutron elastic- and inelastic-scattering cross sections of elemental calcium are measured from approximate to 1.5 to 10 MeV with sufficient detail to determine their energy-averaged behavior in the highly fluctuating environment. These results, combined with values previously reported in the literature, are assessed in the contexts of optical-statistical, dispersive-optical, and coupled-channels models, applicable to the energy domain 0-30 + MeV, with particular emphasis on the lower energies where the processes are sensitive to the dispersion relationship. The interpretations define the energy dependencies of the potential parameters (resolving prior ambiguities), suggest that previous estimates of the prominent low-energy (n, p) and (n, alpha) reactions are too large, reasonably describe observables to at least 30 MeV, and provide a vehicle for extrapolation into the bound-state regime that gives a good description of hole- and particle-state binding energies. The resulting real-potential parameters are consistent with global trends. C1 UNIV ARIZONA,TUCSON,AZ 85721. RP SMITH, AB (reprint author), ARGONNE NATL LAB,DIV ENGN PHYS,D-207,AA-115,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 69 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 AUG 29 PY 1994 VL 576 IS 2 BP 165 EP 188 DI 10.1016/0375-9474(94)90255-0 PG 24 WC Physics, Nuclear SC Physics GA PE465 UT WOS:A1994PE46500002 ER PT J AU AHMAD, I GINDLER, JE CARPENTER, MP HENDERSON, DJ MOORE, EF JANSSENS, RVF BEARDEN, IG FOSTER, CC AF AHMAD, I GINDLER, JE CARPENTER, MP HENDERSON, DJ MOORE, EF JANSSENS, RVF BEARDEN, IG FOSTER, CC TI LEVEL STRUCTURE OF THE ODD-ODD NUCLEUS (224)(89)AC SO NUCLEAR PHYSICS A LA English DT Article DE RADIOACTIVITY REACTIONS PA-228(ALPHA) [FROM TH-232(P,5N)]; MEASURED E(ALPHA), I-ALPHA, E(GAMMA), I-GAMMA, I(CE), ALPHA-GAMMA-, ALPHA-GAMMA-GAMMA-, ALPHA(CE)-COIN; AC-224 DEDUCED LEVELS, J, PI, ICC, GAMMA-MULTIPOLARITY ID OCTUPOLE DEFORMATION; REFLECTION ASYMMETRY; PARITY DOUBLETS; AC-225 AB The level structure of the odd-odd nucleus Ac-224 has been studied by measuring radiations associated with the alpha-decay of the 22 h P-228 isotope. The Pa-228 activity was produced by the irradiation of Th metal foils with 45 MeV protons. The Pa fraction was subsequently chemically isolated. Alpha singles as well as alpha gamma-, alpha e-, alpha gamma gamma-coincidence measurements were performed with thin sources, and a partial level scheme was deduced for the Ac-224. Although the spins of the observed levels have not been uniquely determined, the data establish positive- and negative-parity bands which exhibit characteristics of parity doublets. In particular, two bands at 354 and 360 keV appear to be members of a parity doublet. The similarity in the hindrance factors of alpha-decays to the 354 and 360 keV levels, which have opposite parities, indicates that the wavefunctions of the two states are very similar, which is a signature for octupole deformation. C1 PURDUE UNIV,W LAFAYETTE,IN 47907. INDIANA UNIV,CYCLOTRON FACIL,BLOOMINGTON,IN 47405. RP AHMAD, I (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Bearden, Ian/M-4504-2014; Carpenter, Michael/E-4287-2015 OI Bearden, Ian/0000-0003-2784-3094; Carpenter, Michael/0000-0002-3237-5734 NR 16 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 AUG 29 PY 1994 VL 576 IS 2 BP 246 EP 266 DI 10.1016/0375-9474(94)90259-3 PG 21 WC Physics, Nuclear SC Physics GA PE465 UT WOS:A1994PE46500006 ER PT J AU KEATON, GL AF KEATON, GL TI THE CONSTITUENT QUARK AS A TOPOLOGICAL SOLITON SO NUCLEAR PHYSICS B LA English DT Article ID SPIN STRUCTURE; SKYRME MODEL; SCATTERING; STABILITY; NUCLEON; PROTON; QCD AB Recently it was proposed that the constituent quark is a topological soliton. I investigate this soliton, calculating its mass, radius, magnetic moment, color magnetic moment, and spin structure function. Within the approximations used, the magnetic moments and spin structure function cannot simultaneously be made to agree with the constituent quark model. Some discussion of what to expect from better approximations is included. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720. RP KEATON, GL (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 48 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 29 PY 1994 VL 425 IS 3 BP 595 EP 612 DI 10.1016/0550-3213(94)90289-5 PG 18 WC Physics, Particles & Fields SC Physics GA PH175 UT WOS:A1994PH17500007 ER PT J AU DOREY, N HUGHES, J MATTIS, MP AF DOREY, N HUGHES, J MATTIS, MP TI SOLVABILITY, CONSISTENCY, AND THE RENORMALIZATION-GROUP IN LARGE-N(C) MODELS OF HADRONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID = JT RULE; LARGE-N; SOLITON; QCD; SCATTERING; BARYONS AB We study meson-baryon Lagrangians in the large-N(c) limit, and show the following. (a) To leading order in 1/N(c), the dressed 1-meson-2-baryon Green's functions (an infinite class of divergent Feynman graphs) are obtained exactly by solving coupled classical field equations with a UV cutoff. (b) The only effect of this graph resummation is to renormalize-consistent with large-N(c) selection rules-the bare Yukawa couplings, baryon masses and hyperfine baryon mass splittings. (c) The exact large-N(c) renormalization group equations for these quantities are derived. Skyrme-type models are conjectured to be UV fixed points of such flows. C1 MICHIGAN STATE UNIV,DEPT PHYS,E LANSING,MI 48823. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP DOREY, N (reprint author), UNIV COLL SWANSEA,DEPT PHYS,SWANSEA SA2 8PP,W GLAM,WALES. NR 22 TC 14 Z9 14 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 AUG 29 PY 1994 VL 73 IS 9 BP 1211 EP 1214 DI 10.1103/PhysRevLett.73.1211 PG 4 WC Physics, Multidisciplinary SC Physics GA PD936 UT WOS:A1994PD93600006 ER PT J AU NAGLE, JL KUMAR, BS BENNETT, MJ DIEBOLD, GE POPE, JK SORGE, H SULLIVAN, JP AF NAGLE, JL KUMAR, BS BENNETT, MJ DIEBOLD, GE POPE, JK SORGE, H SULLIVAN, JP TI SOURCE SIZE DETERMINATION IN RELATIVISTIC NUCLEUS-NUCLEUS COLLISIONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID ENERGY; DYNAMICS; MODEL AB We describe a technique whereby the freeze-out interaction volumes of nucleus-nucleus collisions are extracted from a cascade (plus coalescence) model, after comparison to measured abundances of light nuclei. We conclude that the interaction volume undergoes significant expansion before light nuclei are produced. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP NAGLE, JL (reprint author), YALE UNIV,AW WRIGHT NUCL STRUCT LAB,NEW HAVEN,CT 06520, USA. NR 27 TC 15 Z9 15 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 AUG 29 PY 1994 VL 73 IS 9 BP 1219 EP 1222 DI 10.1103/PhysRevLett.73.1219 PG 4 WC Physics, Multidisciplinary SC Physics GA PD936 UT WOS:A1994PD93600008 ER PT J AU WALKER, B SHEEHY, B DIMAURO, LF AGOSTINI, P SCHAFER, KJ KULANDER, KC AF WALKER, B SHEEHY, B DIMAURO, LF AGOSTINI, P SCHAFER, KJ KULANDER, KC TI PRECISION-MEASUREMENT OF STRONG-FIELD DOUBLE-IONIZATION OF HELIUM SO PHYSICAL REVIEW LETTERS LA English DT Article ID NONSEQUENTIAL DOUBLE-IONIZATION; ABOVE-THRESHOLD IONIZATION; ENERGY AB The production of He+ and He-2+ by a 160 fs, 780 nm laser has been measured over an unprecedented 12 orders of magnitude in counting range. Enhanced double electron emission, called nonsequential (NS) ionization. was observed over an intensity range where the single ionization dynamics is evolving from multiphoton to pure tunneling. The NS yield is found to scale with the ac-tunneling rate for the neutral, even when tunneling is not the dominant ionization pathway. A rescattering mechanism fails to predict the observed NS threshold or magnitude. C1 CTR ETUD SACLAY,SERV RECH SURFACES & IRRADIAT MAT,F-91191 GIF SUR YVETTE,FRANCE. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309. RP WALKER, B (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. RI Walker, Barry/F-8532-2011 NR 14 TC 681 Z9 693 U1 7 U2 50 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 AUG 29 PY 1994 VL 73 IS 9 BP 1227 EP 1230 DI 10.1103/PhysRevLett.73.1227 PG 4 WC Physics, Multidisciplinary SC Physics GA PD936 UT WOS:A1994PD93600010 ER PT J AU MOSLEY, WD DYKES, JW SHELTON, RN STERNE, PA HOWELL, RH AF MOSLEY, WD DYKES, JW SHELTON, RN STERNE, PA HOWELL, RH TI DIRECT OBSERVATION OF THE FERMI-SURFACE IN BA1-XKXBIO3 SO PHYSICAL REVIEW LETTERS LA English DT Article ID SUPERCONDUCTIVITY; SYSTEM; YBA2CU3O7-DELTA AB Positron angular correlation measurements have been used to measure electron-positron momentum density distributions in high-quality single crystals of the 32 K superconductor Ba1-xKxBiO3. Using first-principles calculations we are able to separate those features due to the strong overlap of the electron and positron wave functions from those associated with Fermi surface breaks. We have identified a roughly cubic Fermi surface centered around GAMMA, whose location is in excellent correspondence with that predicted by the band structure calculations. C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP MOSLEY, WD (reprint author), UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616, USA. NR 19 TC 16 Z9 16 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 AUG 29 PY 1994 VL 73 IS 9 BP 1271 EP 1274 DI 10.1103/PhysRevLett.73.1271 PG 4 WC Physics, Multidisciplinary SC Physics GA PD936 UT WOS:A1994PD93600021 ER PT J AU KAWASHIMA, N GUBERNATIS, JE AF KAWASHIMA, N GUBERNATIS, JE TI LOOP ALGORITHMS FOR MONTE-CARLO SIMULATIONS OF QUANTUM SPIN SYSTEMS SO PHYSICAL REVIEW LETTERS LA English DT Article ID DYNAMICS AB We present a new algorithm for world line Monte Carlo simulations of quantum spin systems. The algorithm consists of a stochastic pairing and a stochastic flipping procedure, and the formula for the pairing probability is explicitly given for Heisenberg models. As an illustration of the algorithm, we calculated autocorrelation times for simulations of the S = 1 antiferromagnetic Heisenberg chain. The rapid increase in autocorrelation times which is seen in the conventional world line method as the imaginary-time spacing decreases is eliminated by the present algorithm. C1 LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. RP LOS ALAMOS NATL LAB, CTR NONLINEAR STUDIES, LOS ALAMOS, NM 87545 USA. NR 18 TC 60 Z9 60 U1 1 U2 1 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 AUG 29 PY 1994 VL 73 IS 9 BP 1295 EP 1298 DI 10.1103/PhysRevLett.73.1295 PG 4 WC Physics, Multidisciplinary SC Physics GA PD936 UT WOS:A1994PD93600027 ER PT J AU HALLETT, WA HOWIE, DJH SILVER, JD DIETRICH, DD AF HALLETT, WA HOWIE, DJH SILVER, JD DIETRICH, DD TI MEASUREMENT OF 1S2S3S1-1S2P3P2,0 WAVELENGTHS IN HELIUM-LIKE ARGON SO PHYSICS LETTERS A LA English DT Article ID TRIPLET-STATES; RECOIL IONS; DIRAC-FOCK; ENERGIES; TRANSITIONS; SEQUENCE AB We have used photographic spectroscopy of a recoil-ion source to perform a measurement of the vacuum ultra-violet 1s2s3S1-1s2p3P2,0 transition wavelengths in heliumlike argon. The results are 559.95 +/- 0.02 angstrom and 661.58 +/- 0.002 angstrom respectively. This measurement constitutes a sensitive test of current relativistic and quantum electrodynamic calculations. C1 LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550. RP HALLETT, WA (reprint author), UNIV OXFORD,CLARENDON LAB,OXFORD OX1 3PU,ENGLAND. NR 18 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD AUG 29 PY 1994 VL 192 IS 1 BP 43 EP 46 DI 10.1016/0375-9601(94)91012-X PG 4 WC Physics, Multidisciplinary SC Physics GA PE042 UT WOS:A1994PE04200008 ER PT J AU YAKHONTOV, VL AMUSIA, MY AF YAKHONTOV, VL AMUSIA, MY TI HYPERFINE SPLITTING COMPUTATION IN THE 1S(1/2)(E)2S(1/2)(MU) STATE OF THE EXOTIC (HE-4(2+)-MU-E-)0 AND (HE-3(2+)-MU-E-)0 ATOMS SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID MUONIC HELIUM ATOM AB An ab initio calculation of the hyperfine splitting (HFS) intervals in the 2s1/2(mu)1s1/2(e) state of the exotic (He-4(2+)-mu-e-)0 and (He-3(2+)-mu-e-)0 atoms is carried out. The samllness of beta = m(e)/m(mu) approximately 1/200 (the electron and the mu-meson mass ratio) enables us to take into account the non-relativistic interparticle correlational interaction perturbatively. Corresponding corrections, which give the dominant contribution to the HFS, are calculated to logarithmic accuracy analytically and exactly. Together with the leading relativistic and radiative corrections the HFS values obtained tum out to be in accord with the results of other calculations. C1 ST PETERSBURG STATE TECH UNIV,POLYTECHNICHESKAYA 29,195251 ST PETERSBURG,RUSSIA. AF IOFFE PHYS TECH INST,194021 ST PETERSBURG,RUSSIA. UNIV CHICAGO,ARGONNE NATL LAB,ARGONNE,IL 60439. RP YAKHONTOV, VL (reprint author), UNIV OXFORD,INST MATH,24-29 ST GILES,OXFORD OX1 3LB,ENGLAND. RI Amusia, Miron/K-7726-2014 NR 33 TC 9 Z9 10 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-4075 J9 J PHYS B-AT MOL OPT JI J. Phys. B-At. Mol. Opt. Phys. PD AUG 28 PY 1994 VL 27 IS 16 BP 3743 EP 3765 DI 10.1088/0953-4075/27/16/021 PG 23 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA PD623 UT WOS:A1994PD62300021 ER PT J AU EIDEN, GC NOGAR, NS AF EIDEN, GC NOGAR, NS TI THE 2-PHOTON SPECTRUM OF IRON AND SILICON DETECTED BY RESONANT LASER-ABLATION SO CHEMICAL PHYSICS LETTERS LA English DT Article ID IONIZATION MASS-SPECTROMETRY; MULTIPHOTON IONIZATION; INDUCED FLUORESCENCE; SI-I; SPECTROSCOPY; DESORPTION; EXCITATION; ATOMS; SENSITIVITY; GAAS AB We report ionization spectra of Si and Fe atoms ablated at low fluence from bulk Si and Re targets, respectively. Two-photon transition intensities are calculated using second-order perturbation theory. We obtain moderate agreement between experimental and calculated intensities, assuming a temperature of 1100 +/- 200 K for Fe ablation from Re. Si and Fe are detected in excited electronic states up to 1.9 and 1.5 eV, respectively. Ablation of electronically excited Si is enhanced with exposure to oxygen or water. This effect is compared with a similar effect observed in ion induced sputtering of Si and other materials. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 32 TC 22 Z9 23 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 AUG 26 PY 1994 VL 226 IS 5-6 BP 509 EP 516 DI 10.1016/0009-2614(94)00765-9 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PE005 UT WOS:A1994PE00500013 ER PT J AU SCOTT, B BERKEY, M SWANSON, BI AF SCOTT, B BERKEY, M SWANSON, BI TI SYNTHESIS AND CHARACTERIZATION OF [PT(CHXN)2][PT(CHXN)2I2)I4 - A QUASI-ONE-DIMENSIONAL MATERIAL AT THE CDW SDW PHASE-BOUNDARY SO CHEMICAL PHYSICS LETTERS LA English DT Article ID MIXED-VALENCE; PHOTOINDUCED DEFECTS; COMPLEXES; TEMPERATURE; CRYSTAL; PEIERLS; STATES AB The pseudo-one-dimensional solid [Pt(chxn)2][Pt(chxn)2I2)]I4 (chxn = 1R,2R-diaminocyclohexane) was synthesized and characterized, X-ray diffraction shows that the MX chain portion of the structure is a very weak charge-density-wave (CDW). X-ray diffraction also reveals that this material is non-stoichiometric, resulting in intrinsic defects in the chains. Magnetic susceptibility indicates a weak magnetic system that is antiferromagnetically coupled. Absorption spectroscopy shows a low-energy band edge, and a broad intergap absorption that grows with photoexcitation at room temperature. These results support a structure composed of SDW segments embedded in a weak CDW host chain. RP SCOTT, B (reprint author), LOS ALAMOS NATL LAB,SPECT & BIOCHEM CST-14,LOS ALAMOS,NM 87545, USA. RI Scott, Brian/D-8995-2017 OI Scott, Brian/0000-0003-0468-5396 NR 18 TC 5 Z9 5 U1 1 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 AUG 26 PY 1994 VL 226 IS 5-6 BP 537 EP 542 DI 10.1016/0009-2614(94)00768-3 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PE005 UT WOS:A1994PE00500017 ER PT J AU PENG, J BARR, ME ASHBURN, DA ODOM, JD DUNLAP, RB SILKS, LA AF PENG, J BARR, ME ASHBURN, DA ODOM, JD DUNLAP, RB SILKS, LA TI SYNTHESIS AND CHARACTERIZATION OF CHIRAL OXAZOLIDINE-2-SELONES - A GENERAL ONE-STEP PROCEDURE FROM READILY AVAILABLE OXAZOLINES SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Review ID NUCLEAR-MAGNETIC-RESONANCE; ENANTIOMERIC EXCESS DETERMINATION; MULTIFUNCTIONAL CARBON STRUCTURE; FLUOROPHENYLACETIC ACID CFPA; SPIN-LATTICE RELAXATION; SELENIUM DOUBLE-BONDS; ION-PAIR STRUCTURES; DELTA-DELTA VALUES; P-31 NMR METHOD; SE-77 NMR AB The synthesis of a wide variety of chiral oxazolidine-2-selones from readily available 2-oxazolines has been accomplished in one step with yields ranging from 82 to 98%. A mechanistic investigation of the formation of these selones has indicated the presence of intermediate anions which have been characterized by C-13 and Se-77 NMR spectroscopy. X-ray crystallographic data suggest the chiral selones exists as dimeric pairs or networks linked by unusual selenium hydrogen bonds. These chiral reagents exhibit extraordinary Se-77 chemical shift sensitivity and are useful fdr the detection and quantitation of chirality at remotely disposed chiral centers. C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. UNIV S CAROLINA,DEPT CHEM & BIOCHEM,COLUMBIA,SC 29208. NR 123 TC 26 Z9 26 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD AUG 26 PY 1994 VL 59 IS 17 BP 4977 EP 4987 DI 10.1021/jo00096a048 PG 11 WC Chemistry, Organic SC Chemistry GA PE443 UT WOS:A1994PE44300048 ER PT J AU WALLOW, TI NOVAK, BM AF WALLOW, TI NOVAK, BM TI HIGHLY EFFICIENT AND ACCELERATED SUZUKI ARYL COUPLINGS MEDIATED BY PHOSPHINE-FREE PALLADIUM SOURCES SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Article ID ORGANIC ELECTROPHILES; ORGANOTIN COMPOUNDS; CATALYZED REACTION; ARYLBORONIC ACIDS; HALIDES; DERIVATIVES; HALOARENES; COMPLEXES; IODIDES; CHEMISTRY AB Suzuki aryl cross-couplings employing aryl bromides and aryl iodides proceed under mild conditions (65 degrees C) with high efficiency (substrate-to-catalyst ratios in excess of 500) in the presence of phosphine-free palladium catalysts derived from palladium acetate, Pd-2(dba)(3).C6H6 (dba = dibenzylideneacetone), and [(eta(3)-C3H5)PdCl](2). Phosphine inhibition is shown to play a key role in limiting catalytic efficiency; qualitative comparison studies show that the phosphine-free systems are 1-2 orders of magnitude more active than phosphine-supported catalytic systems. Pd[P(Ph)(3)](4) proved to be the least active of the catalytic species screened. The phosphine-free methodology appears to be generally applicable; cross-couplings of aryl iodides yielding biaryls 6 and 7 proceed without noticeable steric or electronic effects. Cross-couplings employing aryl bromides are insensitive to electronic effects in the synthesis of 6 but are slowed by steric hindrance in the synthesis of 7. Acceleration of cross-coupling is observed in the presence of polar cosolvents and at high pH. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CTR ADV MAT,DIV SCI MAT,BERKELEY,CA 94720. NR 56 TC 235 Z9 242 U1 3 U2 34 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3263 J9 J ORG CHEM JI J. Org. Chem. PD AUG 26 PY 1994 VL 59 IS 17 BP 5034 EP 5037 DI 10.1021/jo00096a056 PG 4 WC Chemistry, Organic SC Chemistry GA PE443 UT WOS:A1994PE44300056 ER PT J AU ORON, A ROSENAU, P AF ORON, A ROSENAU, P TI ON A NONLINEAR THERMOCAPILLARY EFFECT IN THIN LIQUID LAYERS SO JOURNAL OF FLUID MECHANICS LA English DT Article ID SURFACE-TENSION; MARANGONI CONVECTION; TEMPERATURE; PATTERNS; FILMS AB Dilute aqueous solutions of long alcohol chains were recently found to cause a quadratic dependence of surface tension on the temperature without affecting other bulk properties of the liquid: sigma = sigma0 + alpha(Q)(T-T0)2, alpha(Q) > 0. The impact of such Marangoni instability on the behaviour of a thin liquid layer is studied in this work. We derive an equation describing a nonlinear spatiotemporal evolution of a thin film. The behaviour of the perturbed film in the absence of gravity, critically depends on whether the temperature T0, yielding a minimal surface tension, is attained on the surface of the film. When this is the case, a qualitatively new behaviour is observed: perturbations of the film interface may evolve into continuous steady patterns that do not rupture. Otherwise, the observed patterns due to the linear and quadratic Marangoni effects are qualitatively similar and result in the rupture of the film into separate drops. C1 TECHNION ISRAEL INST TECHNOL,CTR RES NONLINEAR PHENOMENA,IL-32000 HAIFA,ISRAEL. LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. RP ORON, A (reprint author), TECHNION ISRAEL INST TECHNOL,FAC MECH ENGN,IL-32000 HAIFA,ISRAEL. NR 14 TC 44 Z9 44 U1 1 U2 6 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD AUG 25 PY 1994 VL 273 BP 361 EP 374 DI 10.1017/S0022112094001977 PG 14 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA PE845 UT WOS:A1994PE84500015 ER PT J AU TRUHLAR, DG LIU, YP SCHENTER, GK GARRETT, BC AF TRUHLAR, DG LIU, YP SCHENTER, GK GARRETT, BC TI TUNNELING IN THE PRESENCE OF A BATH - A GENERALIZED TRANSITION-STATE THEORY APPROACH SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID CHEMICAL-REACTION RATES; POTENTIAL-ENERGY SURFACE; MODEL ACTIVATED REACTION; NONEQUILIBRIUM SOLVATION; RATE CONSTANTS; POLYATOMIC-MOLECULES; ELECTRON-TRANSFER; DYNAMICS; APPROXIMATION; CURVATURE AB In this article we propose a new approximation for incorporating tunneling into variational transition state theory when the critical degrees of freedom are coupled to a bath. The new approximation is based on a canonically averaged mean-shape potential which can be evaluated from the bath contribution to the potential of mean force as a function of temperature. The new approximation is applied to a polyatomic organic reaction in which some low-frequency modes are treated as a bath and to a model reaction in solution. C1 UNIV MINNESOTA, INST SUPERCOMP, MINNEAPOLIS, MN 55455 USA. PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RP TRUHLAR, DG (reprint author), UNIV MINNESOTA, DEPT CHEM, 207 PLEASANT ST SE, MINNEAPOLIS, MN 55455 USA. RI Garrett, Bruce/F-8516-2011; Schenter, Gregory/I-7655-2014; Truhlar, Donald/G-7076-2015 OI Schenter, Gregory/0000-0001-5444-5484; Truhlar, Donald/0000-0002-7742-7294 NR 71 TC 66 Z9 67 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 25 PY 1994 VL 98 IS 34 BP 8396 EP 8405 DI 10.1021/j100085a021 PG 10 WC Chemistry, Physical SC Chemistry GA PD464 UT WOS:A1994PD46400021 ER PT J AU SU, MC LIM, KP MICHAEL, JV HRANISAVLJEVIC, J XUN, YM FONTIJN, A AF SU, MC LIM, KP MICHAEL, JV HRANISAVLJEVIC, J XUN, YM FONTIJN, A TI KINETICS STUDIES OF THE O(P-3)+CH2CL2 AND CHCL3 REACTIONS OVER THE 468-1355-K AND 499-1090-K RANGES USING 2 TECHNIQUES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SHOCK-TUBE TECHNIQUE; THERMAL-DECOMPOSITION; RATE-CONSTANT; PHOTOLYSIS; O(P-3); FLASH; N2O AB The thermal bimolecular rate coefficients, O + CH2Cl2 and O + CHCl3, have been investigated in this work over the respective temperature ranges 468-1355 and 499-1090 K using two entirely different techniques. The first technique, HTP (high-temperature photochemistry) at Rensselaer, provided results for the lower temperatures of these ranges, while the higher temperature measurements were carried out at Argonne using the LP-ST (laser photolysis-shock tube) method. Substantial variations in source and reactant molecular concentrations, as well as in other experimental parameters specific to each experiment, were employed in each of the studies. Temperature overlap in the databases was possible with CH2Cl2 but not with CHCl3. The combined results for (1) O + CH2Cl2 --> OH + CHCl2 and (2) O + CHCl3 --> OH + CCl3, are k(1) = 1.1 X 10(-17) (T/K)(1.99) exp(-2855 K/T) and k(2) = 1.9 X 10(-11) (T/K)(0.22) exp(-4755 K/T) cm(3) molecule(-1) s(-1), with estimated 1 sigma accuracy limits of +/-25%. The present results are compared to the related O + CH4 and O + CH3Cl reactions. The four reactions have nearly equal rate coefficients. This is discussed on the basis of BEBO calculations. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RENSSELAER POLYTECH INST,ISERMANN DEPT CHEM ENGN,TROY,NY 12180. RI Michael, Joe/E-3907-2010 NR 37 TC 12 Z9 12 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 25 PY 1994 VL 98 IS 34 BP 8411 EP 8418 DI 10.1021/j100085a023 PG 8 WC Chemistry, Physical SC Chemistry GA PD464 UT WOS:A1994PD46400023 ER PT J AU EMERY, VJ AF EMERY, VJ TI HIGH-TEMPERATURE SUPERCONDUCTORS - THE SEARCH FOR SYMMETRY SO NATURE LA English DT Editorial Material RP EMERY, VJ (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,BLDG 510,UPTON,NY 11973, USA. NR 9 TC 17 Z9 17 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW SN 0028-0836 J9 NATURE JI Nature PD AUG 25 PY 1994 VL 370 IS 6491 BP 598 EP 598 DI 10.1038/370598a0 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PD310 UT WOS:A1994PD31000024 ER PT J AU SAWICKI, M AHLUWALIA, DV AF SAWICKI, M AHLUWALIA, DV TI PARITY AND FERMIONS IN FRONT-FORM - AN UNEXPECTED RESULT SO PHYSICS LETTERS B LA English DT Article ID KINEMATIC ACAUSALITY; ARBITRARY-SPIN; FIELDS; QUANTIZATION; FORMALISM; EQUATIONS; SCALAR AB We show that under the operation of parity the front-form (1/2, 0) and (0, 1/2) Weyl spinors (massive or massless) do not get interchanged. This has the important consequence that if a front-form theory containing (1/2, 0) + (0, 1/2) representation space has to be parity covariant then one must study the evolution of a physical system not only along x+ but also along the x- direction. As a result of our analysis, we find an indication that there may be no halving of the degrees of freedom in the front form of field theories. C1 LOS ALAMOS NATL LAB,NUCL & PARTICLE PHYS RES GRP,LOS ALAMOS,NM 87545. RP SAWICKI, M (reprint author), JOHN A LOGAN COLL,DEPT PHYS SCI,CARTERVILLE,IL 62918, USA. NR 31 TC 4 Z9 4 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 AUG 25 PY 1994 VL 335 IS 1 BP 24 EP 28 DI 10.1016/0370-2693(94)91552-0 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PE040 UT WOS:A1994PE04000005 ER PT J AU DU, JY KLEINHANS, FW MAZUR, P CRITSER, JK AF DU, JY KLEINHANS, FW MAZUR, P CRITSER, JK TI HUMAN SPERMATOZOA GLYCEROL PERMEABILITY AND ACTIVATION-ENERGY DETERMINED BY ELECTRON-PARAMAGNETIC-RESONANCE SO BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES LA English DT Article DE ERYTHROCYTE; MEMBRANE; EPR; GLYCEROL PERMEABILITY; ACTIVATION ENERGY; (HUMAN SPERMATOZOON) ID HUMAN RED-CELL; REFLECTION COEFFICIENTS; WATER PERMEABILITY; SPIN-RESONANCE; OSMOTIC WATER; COLD SHOCK; SPERM; LIPOSOMES; VOLUME; EQUILIBRIUM AB The permeability of human spermatozoa to glycerol and its activation energy were determined using electron paramagnetic resonance (EPR) techniques. EPR was used to monitor the aqueous cell volume change vs. time during the glycerol permeation process using the aqueous spin label N-15-tempone and the membrane impermeable broadening agent potassium trioxalatochromiate (chromium oxalate). The permeation process was completed in tens of seconds, requiring the use of a stopped-flow methodology. The glycerol permeability coefficient (P-g) was determined by fitting a simple theoretical model to the experimental data. The permeabilities of human spermatozoa in 1 molar and 2 molar glycerol at 20 degrees C are (10.3 +/- 0.3).10(-4) cm/min (mean +/- S.D.) and (6.0 +/- 1.4).10(-4) cm/min, respectively. The permeabilities of human spermatozoa in 2 molar glycerol at 30, 20, 10, and 0 degrees C are (8.3 +/- 1.3).10(-4) cm/min, (6.0 +/- 1.4).10(-4) cm/min, (2.1 +/- 0.4).10(-4) cm/min, and (1.1 +/- 0.3).10(-4) cm/min, respectively. The activation energy (E(a)) for glycerol permeation between 30 degrees C and 0 degrees C was found to be 11.6 kcal/mol. C1 METHODIST HOSP INDIANA,CRYOBIOL RES INST,INDIANAPOLIS,IN 46202. INDIANA UNIV PURDUE UNIV,DEPT PHYS,INDIANAPOLIS,IN 46202. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. INDIANA UNIV,SCH MED,DEPT PHYSIOL & BIOPHYS & OBSTET GYNECOL,INDIANAPOLIS,IN 46202. FU NICHD NIH HHS [R01 HD-25949, KO4-HD00980] NR 56 TC 23 Z9 23 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0005-2736 J9 BBA-BIOMEMBRANES JI Biochim. Biophys. Acta-Biomembr. PD AUG 24 PY 1994 VL 1194 IS 1 BP 1 EP 11 DI 10.1016/0005-2736(94)90196-1 PG 11 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA PE492 UT WOS:A1994PE49200001 PM 8075122 ER PT J AU KLOOSTER, WT KOETZLE, TF JIA, GC FONG, TP MORRIS, RH ALBINATI, A AF KLOOSTER, WT KOETZLE, TF JIA, GC FONG, TP MORRIS, RH ALBINATI, A TI SINGLE-CRYSTAL NEUTRON-DIFFRACTION STUDY OF THE COMPLEX [RU(H...H)(C(5)ME(5))(DPPM)]BF4 WHICH CONTAINS AN ELONGATED DIHYDROGEN LIGAND SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID R = PH; MOLECULAR-HYDROGEN COMPLEXES; X-RAY; ETA-2-DIHYDROGEN; POLYHYDRIDES; COORDINATION; DIHYDRIDE; CLEAVAGE; HYDRIDE; H-2 AB The H-H distance of the dihydrogen ligand in [Ru(H H)(C(5)Me(5))(dppm)]BF4 is 1.08(3) Angstrom as determined by neutron diffraction on a crystal of volume 3.2 mm(3) at 15 K: monoclinic, space group P2(1), a 10.833(3), b = 15.045(4), c 10.781(2) Angstrom, beta = 114.47(2)degrees, V = 1599.3(7) Angstrom(3), and D-c = 1.473 g cm(-3) for Z = 2; R(F) = 0.071, R(F-2) = 0.151, R(W)(F-2) = 0.099 for 4198 reflections. The H-H distance, when corrected for the effects of thermal motion, lengthens slightly from 1.08(3) to 1.10(3) Angstrom. The complex contains an elongated dihydrogen ligand which is symmetrically, side-on bonded to the ruthenium as one leg of a three-legged piano stool structure. The H-2 ligand lies parallel to the C(5)Me(5) ligand plane, an orientation where pi-overlap with an a ''d orbital on the metal is optimum. The T-1 NMR method gives an H-H distance of 1.10(1) Angstrom for the case of restricted rotation. The present structure provides a model for coordinated H-2 at an intermediate stage of oxidative addition. The (1)J(H,D) coupling in the Ru(H...D) isotopomer increases with decreasing temperature; this is interpreted as a slight shortening of the H-D distance. The structural and H-1 NMR data are compared for dihydrogen complexes which have been studied by single crystal neutron diffraction. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. HONG KONG UNIV SCI & TECHNOL,DEPT CHEM,KOWLOON,HONG KONG. UNIV TORONTO,DEPT CHEM,TORONTO M5S 1A1,ON,CANADA. UNIV MILAN,IST CHIM FARMACEUT,I-20131 MILAN,ITALY. RI Albinati, Alberto/I-1262-2015; Morris, Robert/R-8760-2016 OI Albinati, Alberto/0000-0002-8779-3327; Morris, Robert/0000-0002-7574-9388 NR 34 TC 95 Z9 95 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 24 PY 1994 VL 116 IS 17 BP 7677 EP 7681 DI 10.1021/ja00096a026 PG 5 WC Chemistry, Multidisciplinary SC Chemistry GA PD697 UT WOS:A1994PD69700026 ER PT J AU KOTHE, G WEBER, S OHMES, E THURNAUER, MC NORRIS, JR AF KOTHE, G WEBER, S OHMES, E THURNAUER, MC NORRIS, JR TI HIGH TIME RESOLUTION ELECTRON-PARAMAGNETIC-RESONANCE OF LIGHT-INDUCED RADICAL PAIRS IN PHOTOSYNTHETIC BACTERIAL REACTION CENTERS - OBSERVATION OF QUANTUM BEATS SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID RHODOBACTER-SPHAEROIDES R-26; REACTION CENTER PROTEIN; TRANSIENT EPR SPECTROSCOPY; QUINONE ACCEPTOR COMPLEX; HIGH-FIELD EPR; RHODOPSEUDOMONAS-SPHAEROIDES; SPIN POLARIZATION; SINGLE-CRYSTAL; PHOTOSYSTEM-I; H-SUBUNIT AB Light-induced radical pairs in fully deuterated photosynthetic reaction centers of purple bacteria Rhodobacter sphaeroides have been studied by high time resolution electron paramagnetic resonance. Quantum beat oscillations are detected at early times after laser excitation for native and iron-removed reaction center preparations. Due to their spin-correlated generation, the secondary radical pairs P+[QFe(2+)](-) and P(+)Q(-) are expected to start out in a coherent superposition of eigenstates, as observed experimentally. Analysis of the quantum beats as a function of the static magnetic field can ultimately provide detailed information on the molecular structure of the short-lived intermediates in the primary steps of bacterial photosynthesis. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP KOTHE, G (reprint author), UNIV STUTTGART,DEPT CHEM PHYS,PFAFFENWALDRING 55,D-70569 STUTTGART,GERMANY. RI Weber, Stefan/G-6164-2010 NR 56 TC 39 Z9 42 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 24 PY 1994 VL 116 IS 17 BP 7729 EP 7734 DI 10.1021/ja00096a033 PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA PD697 UT WOS:A1994PD69700033 ER PT J AU BRUCE, JE CHENG, X BAKHTIAR, R WU, Q HOFSTADLER, SA ANDERSON, GA SMITH, RD AF BRUCE, JE CHENG, X BAKHTIAR, R WU, Q HOFSTADLER, SA ANDERSON, GA SMITH, RD TI TRAPPING, DETECTION, AND MASS MEASUREMENT OF INDIVIDUAL IONS IN A FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE MASS-SPECTROMETER SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID MULTIPLY CHARGED IONS; ELECTROSPRAY-IONIZATION; SINGLE MOLECULES; PROTEINS; TIME; REMEASUREMENT; EXCITATION; FIELD; BIOMOLECULES AB A Fourier transform ion cyclotron resonance (FTICR) mass spectrometer has been used to trap individual multiply charged ions of several high molecular weight polymers, including poly(ethylene oxide), sodium poly(styrene sulfonate), and the protein bovine serum albumin. Detection of these ions is performed with the nondestructive method distinctive of FTICR, which also allows remeasurement of the same ion or ion population over several hours. For the determination of the charge states (and hence the masses) of individual ions, a new scheme was developed on the basis of the observation of the stepwise mit shifts that result from charge exchange reactions or adduction of a substance of known mass. A novel technique for mass determination of individual ions has been made possible with the observation of cyclotron frequency shifts during the time-domain acquisition period. This time-resolved ion correlation (TRIC) technique allows reactant and product ions to be correlated with confidence and provides the basis for simultaneously studying a moderate number of ions. In this work, a range of observations related to the detection and measurement of Individual ions is presented, as are examples of mass determinations of individual ions performed by utilizing the TRIC technique. Results are presented that show the measurement of poly(ethylene glycol) (PEG) individual ions of more than 5 MDa with more than 2500 net charges and measurement of ions as small as albumin (66 kDa) with as few as 30 charges. Other results illustrate that unexpected behavior can be observed for individual ions that would not be apparent in large ion populations. C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 47 TC 54 Z9 54 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 24 PY 1994 VL 116 IS 17 BP 7839 EP 7847 DI 10.1021/ja00096a046 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA PD697 UT WOS:A1994PD69700046 ER PT J AU LANG, RF JU, TD KISS, G HOFF, CD BRYAN, JC KUBAS, GJ AF LANG, RF JU, TD KISS, G HOFF, CD BRYAN, JC KUBAS, GJ TI OXIDATIVE ADDITION OF THIOLS, DISULFIDES, IODINE, AND HYDROGEN IODIDE TO W(CO)(3)((PPR3)-PR-I)(2) - PREPARATION OF STABLE 17-ELECTRON TUNGSTEN THIOLATE RADICALS FROM COMPLEXES WITH WEAK W-H BONDS SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note ID STRENGTHS C1 UNIV MIAMI,DEPT CHEM,CORAL GABLES,FL 33124. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 15 TC 29 Z9 29 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 24 PY 1994 VL 116 IS 17 BP 7917 EP 7918 DI 10.1021/ja00096a067 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA PD697 UT WOS:A1994PD69700067 ER PT J AU SUN, H BLATTER, F FREI, H AF SUN, H BLATTER, F FREI, H TI SELECTIVE OXIDATION OF TOLUENE TO BENZALDEHYDE BY O-2 WITH VISIBLE-LIGHT IN BARIUM(2+)-EXCHANGED AND CALCIUM(2+)-EXCHANGED ZEOLITE-Y SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CHEM BIODYNAM LAB,BERKELEY,CA 94720. NR 23 TC 69 Z9 71 U1 3 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD AUG 24 PY 1994 VL 116 IS 17 BP 7951 EP 7952 DI 10.1021/ja00096a084 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA PD697 UT WOS:A1994PD69700084 ER PT J AU TSURUTA, H VACHETTE, P SANO, T MOODY, MF AMEMIYA, Y WAKABAYASHI, K KIHARA, H AF TSURUTA, H VACHETTE, P SANO, T MOODY, MF AMEMIYA, Y WAKABAYASHI, K KIHARA, H TI KINETICS OF THE QUATERNARY STRUCTURE CHANGE OF ASPARTATE-TRANSCARBAMYLASE TRIGGERED BY SUCCINATE, A COMPETITIVE INHIBITOR SO BIOCHEMISTRY LA English DT Article ID BISUBSTRATE ANALOG N-(PHOSPHONACETYL)-L-ASPARTATE; RAY SOLUTION SCATTERING; ALLOSTERIC TRANSITION; ESCHERICHIA-COLI; CARBAMOYLTRANSFERASE; BINDING; MECHANISMS AB The quaternary structural change of Escherichia coli aspartate transcarbamylase (ATCase) was studied by time-resolved X-ray solution scattering following the binding of carbamoyl phosphate and of succinate, a competitive inhibitor of the natural substrate L-aspartate. Stopped-flow experiments at sub-zero temperatures in the presence of 30% ethylene glycol allowed us to monitor the evolution of the scattering pattern, including the characteristic scattering peak in an s (= 2 sin theta/lambda) range of 0.01-0.06 Angstrom(-1). The inhibitor binding promotes a quaternary structure change from the T state toward the R state, and as expected for a simple ligand binding process, ATCase remains in the R state, unlike the physiological enzyme reaction [Tsuruta, H., et al. (1990) FEBS Lett. 263, 66-68]. After equilibrium had been established, the final scattering pattern was recorded. When the succinate concentration was sufficiently high, this pattern was the same as that given by ATCase saturated with the bisubstrate analogue N-phosphonoacetyl-L-aspartate (PALA). This implies that, under cryogenic conditions, succinate and carbamoyl phosphate promote the same quaternary structure changes as PALA, which is in good agreement with the crystallographic studies of [Gouaux and Lipscomb, W.N. (1988) Proc. Natl. Acad. Sci. U.S.A. 85, 4205-4208]. Scattering patterns recorded during the course of the structural transition were satisfactorily reproduced by a linear combination of the initial and final patterns, suggesting that there is no significant concentration of quaternary structure intermediates between the T and R states. This is consistent with a concerted structural transition of ATCase. The kinetic data yield the change of (R) over bar (fraction of R structure) with time, from which the apparent rate constant, k(app), of the structure change is calculated. k(app) is substantially larger at higher succinate concentrations, and this concentration dependence looks like the early stage of a sigmoidal curve. The (R) over bar value evaluated for the final equilibrium patterns increases in a similar way, but it saturates at a lower succinate concentration than the rate constant. The two-state allosteric transition model, originally proposed by Monod et al. [Monod, J., Wyman, J., & Changeux, J. (1965) J. Mol. Biol. 12, 88-118], successfully accounts for both the kinetic (rate constant) and final static ((R) over bar) observations and allows estimates of the reaction parameters that characterize the allostery of ATCase. The reaction parameters thus obtained are not only self-consistent but also in good agreement with those obtained in other studies. C1 UNIV LONDON,SCH PHARM,LONDON WC1N 1AX,ENGLAND. NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN. HIROSHIMA UNIV,FAC SCI,DEPT MAT SCI,HIGASHIHIROSHIMA 734,JAPAN. OSAKA UNIV,FAC ENGN SCI,DEPT BIOPHYS ENGN,TOYONAKA,OSAKA 560,JAPAN. KANSAI MED UNIV,PHYS LAB,HIRAKATA,OSAKA 573,JAPAN. UNIV PARIS 11,LURE,CNRS,CEA,MESR,F-91405 ORSAY,FRANCE. RP TSURUTA, H (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD SYNCHROTRON RADIAT LAB,POB 4349,MS 69,STANFORD,CA 94309, USA. NR 28 TC 20 Z9 20 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 23 PY 1994 VL 33 IS 33 BP 10007 EP 10012 DI 10.1021/bi00199a026 PG 6 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PD219 UT WOS:A1994PD21900026 PM 8060968 ER PT J AU CREUTZ, C NEWTON, MD SUTIN, N AF CREUTZ, C NEWTON, MD SUTIN, N TI METAL-LIGAND AND METAL-METAL COUPLING ELEMENTS SO JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY LA English DT Article ID DONOR-ACCEPTOR INTERACTIONS; LIQUID-CRYSTALLINE SOLUTION; ELECTRON-TRANSFER REACTIONS; PENTAAMMINERUTHENIUM(II) COMPLEXES; 2,6-DIHALOGENATED DERIVATIVES; INTERMEDIATE NEGLECT; BINUCLEAR COMPLEXES; RUTHENIUM AMMINES; TORSIONAL ANGLES; SPECTROSCOPY AB The electronic matrix element coupling a ground and charge-transfer excited state can be calculated from the energy and intensity of the appropriate charge-transfer transition. An expression for the electronic coupling element widely used for this purpose is based on equations derived by Mulliken and Hush for an effective two-state model and is frequently assumed to be valid only in the perturbation limit. This expression is shown to be exact within a two-state model. Provided that overlap can be neglected and that the spectroscopic transition is polarized along the donor-acceptor axis, it can be applied to systems ranging from those which are very weakly coupled to those which are very strongly coupled. Application of the Mulliken-Hush expression to (NH3)5RuL2+ complexes, for which metal-ligand backbonding is important, yields metal-ligand coupling elements of 5000-6000 cm-1 with pyridyl ligands (donor-acceptor separation 3.5 angstrom), in very good agreement with estimates obtained from a molecular orbital analysis of the band energies. With use of the superexchange formalism, the metal-ligand coupling elements were used to calculate metal-metal coupling elements for binuclear mixed-valence complexes. Comparison of these values with those obtained from the Mulliken-Hush expression applied directly to the metal-to-metal charge-transfer transition yields agreement within a factor of two or better. RP CREUTZ, C (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 55 TC 340 Z9 340 U1 1 U2 32 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 1010-6030 J9 J PHOTOCH PHOTOBIO A JI J. Photochem. Photobiol. A-Chem. PD AUG 23 PY 1994 VL 82 IS 1-3 BP 47 EP 59 DI 10.1016/1010-6030(94)02013-2 PG 13 WC Chemistry, Physical SC Chemistry GA PF130 UT WOS:A1994PF13000006 ER PT J AU BERTNESS, KA KURTZ, SR FRIEDMAN, DJ KIBBLER, AE KRAMER, C OLSON, JM AF BERTNESS, KA KURTZ, SR FRIEDMAN, DJ KIBBLER, AE KRAMER, C OLSON, JM TI 29.5-PERCENT-EFFICIENT GALNP/GAAS TANDEM SOLAR-CELLS SO APPLIED PHYSICS LETTERS LA English DT Article ID 2-JUNCTION AB We report on multijunction GaInP/GaAs photovoltaic cells with efficiencies of 29.5% at 1-sun concentration and air mass (AM) 1.5 global and 25.7% 1-sun, AM0. These values represent the highest efficiencies achieved by any solar cell under these illumination conditions. Three key areas in this technology are identified and discussed; the grid design, front surface passivation of the top cell, and bottom surface passivation of both cells. Aspects of cell design related to its operation under concentration are also discussed. RP BERTNESS, KA (reprint author), NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401, USA. NR 17 TC 206 Z9 212 U1 3 U2 39 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 22 PY 1994 VL 65 IS 8 BP 989 EP 991 DI 10.1063/1.112171 PG 3 WC Physics, Applied SC Physics GA PC897 UT WOS:A1994PC89700021 ER PT J AU WILSON, RG SCHWARTZ, RN ABERNATHY, CR PEARTON, SJ NEWMAN, N RUBIN, M FU, T ZAVADA, JM AF WILSON, RG SCHWARTZ, RN ABERNATHY, CR PEARTON, SJ NEWMAN, N RUBIN, M FU, T ZAVADA, JM TI 1.54-MU-M PHOTOLUMINESCENCE FROM ER-IMPLANTED GAN AND ALN SO APPLIED PHYSICS LETTERS LA English DT Article ID ERBIUM; GAAS AB We report the observation of the 1.54-mum luminescence of optically excited Er3+ in ion-implanted epitaxially grown GaN and AlN films using below band-gap excitation. The Er-implanted layers were co-implanted with oxygen. At room temperature, this luminescence for GaN grown on sapphire is nearly as intense as it is at 6 or 77 K and exhibits many resolved transitions between crystal-field levels of the 4I13/2 first excited multiplet and the 4I15/2 ground multiplet. C1 UNIV FLORIDA,DEPT MAT SCI & ENGN,GAINESVILLE,FL 32611. USA,RES OFF,RES TRIANGLE PK,NC 27709. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP WILSON, RG (reprint author), HUGHES RES LABS,MALIBU,CA 90265, USA. RI Newman, Nathan/E-1466-2011 OI Newman, Nathan/0000-0003-2819-9616 NR 21 TC 168 Z9 175 U1 1 U2 15 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 22 PY 1994 VL 65 IS 8 BP 992 EP 994 DI 10.1063/1.112172 PG 3 WC Physics, Applied SC Physics GA PC897 UT WOS:A1994PC89700022 ER PT J AU CHEN, AL WALUKIEWICZ, W HALLER, EE AF CHEN, AL WALUKIEWICZ, W HALLER, EE TI PRESSURE-DEPENDENCE OF THE PHOTOLUMINESCENCE SPECTRA OF NITROGEN-DOPED ZNSE - EVIDENCE OF COMPENSATING DEEP DONORS SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY AB We have measured the photoluminescence spectra of nitrogen-doped ZnSe under hydrostatic pressure. From the pressure dependence of the peak positions of the acceptor-bound exciton and donor-acceptor-pair emissions, we show that highly doped samples have two donor-acceptor-pair transitions, one involving shallow and one involving deep donors. Our results confirm that one mechanism limiting the free hole concentration is compensation from this deep donor. C1 UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720. RP CHEN, AL (reprint author), LAWRENCE BERKELEY LAB,CTR ADV MAT,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 17 TC 20 Z9 20 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 22 PY 1994 VL 65 IS 8 BP 1006 EP 1008 DI 10.1063/1.112207 PG 3 WC Physics, Applied SC Physics GA PC897 UT WOS:A1994PC89700027 ER PT J AU WARREN, WL DIMOS, D TUTTLE, BA NASBY, RD PIKE, GE AF WARREN, WL DIMOS, D TUTTLE, BA NASBY, RD PIKE, GE TI ELECTRONIC DOMAIN PINNING IN PB(ZR,TI)O3 THIN-FILMS AND ITS ROLE IN FATIGUE SO APPLIED PHYSICS LETTERS LA English DT Article AB Switchable polarization can be significantly suppressed in Pb(Zr,Ti)O3 thin films by optical, thermal, and electrical processes. The optical (thermal) suppression effects occur by biasing the ferroelectric near the switching threshold and illuminating the material with band-gap light (heating the material to almost-equal-to 100-degrees-C). The electrical suppression effect, commonly known as electrical fatigue, occurs by subjecting the ferroelectric to repeated polarization reversals. It is found that the suppressed polarization in all three cases can be restored to essentially its initial polarization value by injecting electronic charge carriers into the ferroelectric. This strongly suggests that all three forms of degradation involve locking domains by electronic charge trapping centers. RP WARREN, WL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 22 TC 280 Z9 283 U1 2 U2 29 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 22 PY 1994 VL 65 IS 8 BP 1018 EP 1020 DI 10.1063/1.112211 PG 3 WC Physics, Applied SC Physics GA PC897 UT WOS:A1994PC89700031 ER PT J AU MERCHANT, N LUO, JS MARONI, VA RILEY, GN CARTER, WL AF MERCHANT, N LUO, JS MARONI, VA RILEY, GN CARTER, WL TI REACTION INDUCED TEXTURE OF (BI,PB)2SR2CA2CU3O10+DELTA/AG COMPOSITE CONDUCTORS SO APPLIED PHYSICS LETTERS LA English DT Article ID PHASE AB A considerable body of evidence collected on silver-sheathed (Bi,Pb)2Sr2Ca2Cu3O10+delta (Bi-2223/Ag) composite conductors heat treated without any additional rolling or pressing (beyond fabrication of the initial composite) has revealed that significant texturing of the Bi-2223 grains occurs as the Bi-2223 formation reaction takes place. During heat treatment, Bi-2223 is produced via a reaction between Bi-2212 and second phases in the core of the composite. As the Bi-2223 forms, it develops texture by what appears to be a grain growth mechanism. These concurrent processes ultimately result in a well-textured, single-phase conductor even when no additional rolling or pressing is done to the initial composite. This observation raises important questions about the relative contributions of the heat treatment and deformation steps to texture development during conventional oxide-powder-in-tube processing of Bi-2223/Ag composite conductors. C1 AMER SUPERCOND CORP,WESTBOROUGH,MA 01581. RP MERCHANT, N (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 12 TC 80 Z9 81 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 22 PY 1994 VL 65 IS 8 BP 1039 EP 1041 DI 10.1063/1.112145 PG 3 WC Physics, Applied SC Physics GA PC897 UT WOS:A1994PC89700038 ER PT J AU PETRAKIS, L AF PETRAKIS, L TI WHAT KIND OF SCIENCE POLICY SO CHEMICAL & ENGINEERING NEWS LA English DT Letter C1 BROOKHAVEN NATL ASSOCIATED UNIV INC,UPTON,NY. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0009-2347 J9 CHEM ENG NEWS JI Chem. Eng. News PD AUG 22 PY 1994 VL 72 IS 34 BP 4 EP 5 PG 2 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA PD158 UT WOS:A1994PD15800001 ER PT J AU DEGROOT, FMF FONTAINE, A KAO, CC KRISCH, M AF DEGROOT, FMF FONTAINE, A KAO, CC KRISCH, M TI CHARGE-TRANSFER MULTIPLET CALCULATIONS OF THE K-BETA X-RAY-EMISSION SPECTRA OF DIVALENT NICKEL COMPOUNDS SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID TRANSITION-METAL COMPOUNDS; ABSORPTION; SPECTROSCOPY; HALIDES AB The Kbeta x-ray emission spectra of divalent nickel compounds are analysed with both the crystal field multiplet model and the charge transfer multiplet model. The spin-dependent Kbeta x-ray emission spectrum is calculated and it is shown that the charge transfer effect is rather different in nature for spin-up (2A2) and spin-down (4A2) symmetry states. In Case the of a spin-up symmetry state it is shown that multiplet-induced mixing strongly affects the spectral shape. It is argued that renormalized crystal field multiplet calculations remain a useful approach to describe the Kbeta x-ray emission spectral shape. C1 BROOKHAVEN NATL LAB,NSLS,UPTON,NY 11973. ESRF,F-38043 GRENOBLE,FRANCE. RP DEGROOT, FMF (reprint author), UNIV PARIS 11,LURE,BATIMENT 209D,F-91405 ORSAY,FRANCE. RI de Groot, Frank/A-1918-2009 NR 27 TC 41 Z9 41 U1 0 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0953-8984 J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD AUG 22 PY 1994 VL 6 IS 34 BP 6875 EP 6884 PG 10 WC Physics, Condensed Matter SC Physics GA PD624 UT WOS:A1994PD62400019 ER PT J AU BENLLOCH, JM SUMOROK, K GIELE, WT AF BENLLOCH, JM SUMOROK, K GIELE, WT TI POSSIBILITIES OF DISCOVERING A HEAVY TOP-QUARK IN THE LEPTON-MULTIJET CHANNEL SO NUCLEAR PHYSICS B LA English DT Article ID COLLISIONS; SIGNALS; SEARCH AB As the Fermilab experiments steadily increase the top quark mass limit, one has to study the top quark discovery in an scenario where its mass is larger than 150 GeV. We will show in this paper that one can apply simple and efficient cuts in the single lepton plus inclusive four jets channel which will reduce the QCD background by a factor of at least 5, while the top quark signal efficiency is more than 70%. With these cuts a discovery limit of 180 GeV can be set for an integrated luminosity of 100 pb-1. This limit is much higher than previously quoted in the literature and does not use the method of heavy quark tagging. The analysis includes energy smearing of the measured jets to simulate the most important detector effects. C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP BENLLOCH, JM (reprint author), MIT,CAMBRIDGE,MA 02139, USA. OI Benlloch Baviera, Jose Maria/0000-0001-6073-1436 NR 20 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 22 PY 1994 VL 425 IS 1-2 BP 3 EP 14 DI 10.1016/0550-3213(94)90170-8 PG 12 WC Physics, Particles & Fields SC Physics GA PG735 UT WOS:A1994PG73500001 ER PT J AU BERN, Z DIXON, L DUNBAR, DC KOSOWER, DA AF BERN, Z DIXON, L DUNBAR, DC KOSOWER, DA TI ONE-LOOP N-POINT GAUGE-THEORY AMPLITUDES, UNITARITY AND COLLINEAR LIMITS SO NUCLEAR PHYSICS B LA English DT Article ID JET CROSS-SECTIONS; HIGHER-ORDER CORRECTIONS; RESOLVING QCD JETS; LEADING ORDER; FEYNMAN DIAGRAMS; DIMENSIONAL REGULARIZATION; MULTIPLE BREMSSTRAHLUNG; ALGEBRAIC REDUCTION; DECAY PROBABILITIES; GLUON SCATTERING AB We present a technique which utilizes unitarity and collinear limits to construct ansatze for one-loop amplitudes in gauge theory. As an example, we obtain the one-loop contribution to amplitudes for n-gluon scattering in N = 4 supersymmetric Yang-Mills theory with the helicity configuration of the Parke-Taylor tree amplitudes. . We prove that our N = 4 ansatz is correct using general properties of the relevant one-loop n-point integrals. We also give the ''splitting amplitudes'' which govern the collinear behavior of one-loop helicity amplitudes in gauge theories. C1 UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA. CTR ETUD SACLAY, SERV PHYS THEOR SACLAY, F-91191 GIF SUR YVETTE, FRANCE. STANFORD UNIV, STANFORD LINEAR ACCELERATOR CTR, STANFORD, CA 94305 USA. OI dunbar, david/0000-0003-2433-1675 NR 86 TC 730 Z9 730 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 EI 1873-1562 J9 NUCL PHYS B JI Nucl. Phys. B PD AUG 22 PY 1994 VL 425 IS 1-2 BP 217 EP 260 DI 10.1016/0550-3213(94)90179-1 PG 44 WC Physics, Particles & Fields SC Physics GA PG735 UT WOS:A1994PG73500010 ER PT J AU DUNIETZ, I COOPER, PS FALK, AF WISE, MB AF DUNIETZ, I COOPER, PS FALK, AF WISE, MB TI ANOTHER SOURCE OF BARYONS IN B-MESON DECAYS SO PHYSICAL REVIEW LETTERS LA English DT Article ID EXCLUSIVE DECAYS; ANTIBARYON PAIRS AB It is usually assumed that the production of baryons in B decays is induced primarily by the process b --> cudBAR, where the charm quark hadronizes into a char-med baryon. Motivated by an examination of the LAMBDA(c) momentum spectrum in the transition B --> LAMBDA(c)X, we consider the alternative hypothesis that the production of charmed baryons in B decays is in fact dominated by the transition b --> ccsBAR, and is seen primarily in modes with two charmed baryons in the final state. The dominance of such a mechanism would have potentially important implications for the ''charm deficit'' in B decays. C1 UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093. CALTECH,PASADENA,CA 91125. RP DUNIETZ, I (reprint author), FERMILAB NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 15 TC 13 Z9 13 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 AUG 22 PY 1994 VL 73 IS 8 BP 1075 EP 1078 DI 10.1103/PhysRevLett.73.1075 PG 4 WC Physics, Multidisciplinary SC Physics GA PC884 UT WOS:A1994PC88400006 ER PT J AU DING, D HUANG, J COMPTON, RN KLOTS, CE HAUFLER, RE AF DING, D HUANG, J COMPTON, RN KLOTS, CE HAUFLER, RE TI CW LASER IONIZATION OF C-60 AND C-70 SO PHYSICAL REVIEW LETTERS LA English DT Article ID DELAYED ELECTRON-EMISSION; THERMIONIC EMISSION; MULTIPHOTON IONIZATION; TRANSIENT ABSORPTION; TRIPLET-STATE; FULLERENES; EXCITATION; DISSOCIATION; C-60; FRAGMENTATION AB ''Delayed'' photoionization of the all-carbon cage fullerene molecules C60 and C70 is observed using a weakly focused cw argon ion laser (flux I < 10(5) W/cm2). At these fluxes photoexcitation occurs incoherently and so slowly that intersystem crossing must be occurring simultaneously. A ''thermionic emission'' model adequately describes the delayed ionization. RP DING, D (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 33 TC 54 Z9 54 U1 0 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 AUG 22 PY 1994 VL 73 IS 8 BP 1084 EP 1087 DI 10.1103/PhysRevLett.73.1084 PG 4 WC Physics, Multidisciplinary SC Physics GA PC884 UT WOS:A1994PC88400008 ER PT J AU REGAN, MJ RICE, M VANRAAP, MBF BIENENSTOCK, A AF REGAN, MJ RICE, M VANRAAP, MBF BIENENSTOCK, A TI ANISOTROPIC PHASE-SEPARATION THROUGH THE METAL-INSULATOR-TRANSITION IN AMORPHOUS-ALLOYS SO PHYSICAL REVIEW LETTERS LA English DT Article ID X-RAY-SCATTERING AB The characterization of nanometer-scale phase separation in sputtered, amorphous, metal-Ge and Fe-Si films has led to the observation of a new microstructure that extends through the metal-insulator transition. The phase separated regions, which are dependent on deposition conditions, are well correlated and of the order of 1 nm in the growth plane but poorly correlated and 1.5-2.0 nm in the growth direction. The results suggest that fluctuations during film growth play a pivotal role in preventing anticipated columnar structures, probably leading to unusual percolation properties. C1 STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309. NR 16 TC 18 Z9 18 U1 0 U2 3 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 AUG 22 PY 1994 VL 73 IS 8 BP 1118 EP 1121 DI 10.1103/PhysRevLett.73.1118 PG 4 WC Physics, Multidisciplinary SC Physics GA PC884 UT WOS:A1994PC88400017 ER PT J AU AUTREY, T ALBORNCLEVELAND, E CAMAIONI, DM FRANZ, JA AF AUTREY, T ALBORNCLEVELAND, E CAMAIONI, DM FRANZ, JA TI HYDROGEN-EXCHANGE PATHWAYS BETWEEN ARENES AND DIHYDROARENES - AN EXPERIMENTAL AND MECHANISTIC MODELING STUDY OF HIGH-TEMPERATURE HYDROGEN-TRANSFER PATHWAYS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 1 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101821 ER PT J AU BEENE, JR AF BEENE, JR TI GIANT-RESONANCE DECAY, GIANT-RESONANCE SPECTROSCOPY, AND REACTION DYNAMICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 2 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900002 ER PT J AU MCNUTT, B HADDER, J HOLMES, J MCADAMS, HT AF MCNUTT, B HADDER, J HOLMES, J MCADAMS, HT TI ECONOMIC-IMPACT OF REFORMULATED GASOLINE REQUIREMENTS IN PADD-I AND PADD-III REFINERIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,OFF ENERGY DEMAND POLICY,WASHINGTON,DC 20585. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. ADV COMP CTR ARGENTA,ARGENTA,IL 62501. ENERGY & ENVIRONM ANAL INC,ARLINGTON,VA 22209. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 2 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900530 ER PT J AU BASH, PA LENT, GE ROWLAN, J CRUZNEIRA, C LANGLEY, R AF BASH, PA LENT, GE ROWLAN, J CRUZNEIRA, C LANGLEY, R TI INTERACTIVE MOLECULAR DOCKING USING REAL-TIME MOLECULAR-DYNAMICS IN A VIRTUAL-REALITY ENVIRONMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV ILLINOIS,CHICAGO,IL 60680. FLORIDA STATE UNIV,TALLAHASSEE,FL 32306. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 3 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101310 ER PT J AU CAMAIONI, DM AUTREY, ST FRANZ, JA AF CAMAIONI, DM AUTREY, ST FRANZ, JA TI INTRINSIC BARRIERS FOR H-ATOM TRANSFER-REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 3 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101823 ER PT J AU HOULBERG, LM TAYLOE, SL MAVOURNIN, KH HOVATTER, PS FRANCIS, MW LU, PY AF HOULBERG, LM TAYLOE, SL MAVOURNIN, KH HOVATTER, PS FRANCIS, MW LU, PY TI RESOURCE FOR STATE ENVIRONMENTAL-REGULATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,ENVIRONM INFORMAT ANAL SECT,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 3 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100921 ER PT J AU PERRY, DL AF PERRY, DL TI CHEMICAL AND PHYSICAL DATA FOR THE ACTINIDE ELEMENTS AND THEIR COMPOUNDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 3 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 3 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102083 ER PT J AU PLIMPTON, S HENDRICKSON, B BOLDING, B AF PLIMPTON, S HENDRICKSON, B BOLDING, B TI A NEW PARALLEL MOLECULAR-DYNAMICS ALGORITHM FOR SIMULATION OF ORGANIC MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. CRAY RES INC,EAGAN,MN. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 4 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101311 ER PT J AU SIMONSON, JM AF SIMONSON, JM TI MEASUREMENT AND ESTIMATION OF EXCESS THERMODYNAMIC PROPERTIES OF AQUEOUS-ELECTROLYTE SOLUTIONS TO HIGH-TEMPERATURES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 5 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102085 ER PT J AU ARYAEINEJAD, R COLE, JD GREENWOOD, RC HAMILTON, JH BUTLERMOORE, K RAMAYYA, AV MA, WC KORMICKI, J JOHNSON, NR MCGOWAN, FK TERAKOPIAN, G OGANESSIAN, Y AF ARYAEINEJAD, R COLE, JD GREENWOOD, RC HAMILTON, JH BUTLERMOORE, K RAMAYYA, AV MA, WC KORMICKI, J JOHNSON, NR MCGOWAN, FK TERAKOPIAN, G OGANESSIAN, Y TI NUCLEAR-STRUCTURE AND HIGH-SPIN STATES IN NEUTRON-RICH NUCLEI FROM SPONTANEOUS FISSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 VANDERBILT UNIV,DEPT PHYS,NASHVILLE,TN 37235. ORNL,OAK RIDGE,TN 37831. JINR,DUBNA,RUSSIA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 6 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900006 ER PT J AU ELDER, T KELLEY, SS AF ELDER, T KELLEY, SS TI PROPERTIES OF CELLULOSE MIXED ESTERS - A COMPUTATIONAL APPROACH SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 AUBURN UNIV,SCH FORESTRY,AUBURN,AL 36849. NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 6 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100604 ER PT J AU ALNAJJAR, M GLEICHER, G FRANZ, J TRUKSA, S ZHANG, XM BORDWELL, F AF ALNAJJAR, M GLEICHER, G FRANZ, J TRUKSA, S ZHANG, XM BORDWELL, F TI SUBSTITUENT EFFECTS ON C-H BOND STRENGTHS OF THE BENZYLIC POSITIONS IN COAL-MODEL COMPOUNDS - EFFECTS OF SULFUR, SULFOXIDES, SULFONES, AND AROMATIC MOIETIES ON THE STABILITIES OF RADICALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. OREGON STATE UNIV, DEPT CHEM, CORVALLIS, OR 97331 USA. NORTHWESTERN UNIV, DEPT CHEM, EVANSTON, IL 60201 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 7 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101826 ER PT J AU STOYER, MS RASSMUSSEN, JO CHU, F GREGORICH, KE LEE, IY MOHAR, MF NITSCHKE, JM MOODY, K LOUGHEED, R PRUSSIN, SG ASZTALOS, S ARYAEINEJAD, R COLE, J DARDENNE, YX DRIGERT, M HAMILTON, J LU, OH MA, WC RAMAYYA, AV AF STOYER, MS RASSMUSSEN, JO CHU, F GREGORICH, KE LEE, IY MOHAR, MF NITSCHKE, JM MOODY, K LOUGHEED, R PRUSSIN, SG ASZTALOS, S ARYAEINEJAD, R COLE, J DARDENNE, YX DRIGERT, M HAMILTON, J LU, OH MA, WC RAMAYYA, AV TI GAMMA-RAY STUDIES OF THE SPONTANEOUS FISSION OF PU-242 AND CF-252 USING GAMMASPHERE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UCB,BERKELEY,CA 94720. INEL,IDAHO FALLS,ID 83415. VANDERBILT UNIV,NASHVILLE,TN 37232. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 7 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900007 ER PT J AU PITZER, KS AF PITZER, KS TI THERMODYNAMICS OF INDUSTRIAL AND NATURAL-WATERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 8 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102088 ER PT J AU COULTER, KE SAULT, AG BOESPFLUG, EP HARRINGTON, M AF COULTER, KE SAULT, AG BOESPFLUG, EP HARRINGTON, M TI SURFACE-PROPERTIES OF CO/SIO2 AND CO/ZRO2/SIO2 CATALYSTS FOR FISCHERTROPSCH SYNTHESIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 9 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101069 ER PT J AU MESMER, RE HO, PC HOLMES, HF PALMER, DA SIMONSON, JM AF MESMER, RE HO, PC HOLMES, HF PALMER, DA SIMONSON, JM TI ION-ASSOCIATION - DATA, MODELS, AND THERMODYNAMICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 9 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102089 ER PT J AU PREMUZIC, ET LIN, MS AF PREMUZIC, ET LIN, MS TI CHEMICAL CHARACTERIZATION OF BIOTREATED FOSSIL-FUELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV BIOSYST & PROC SCI,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 9 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900536 ER PT J AU BECKER, JA CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM FALLON, P HUA, PF LEE, IY MACCHIAVELLI, AO SALADIN, JX SARANTITES, DG SOBOTKA, LG STEPHENS, FS WOZNIAK, GJ YU, CH AF BECKER, JA CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM FALLON, P HUA, PF LEE, IY MACCHIAVELLI, AO SALADIN, JX SARANTITES, DG SOBOTKA, LG STEPHENS, FS WOZNIAK, GJ YU, CH TI GAMMA-RAY SPECTROSCOPY USING DEEP-INELASTIC REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LBL,BERKELEY,CA 94720. WASHINGTON UNIV,ST LOUIS,MO 63130. LLNL,LIVERMORE,CA 94550. UNIV PITTSBURGH,PITTSBURGH,PA 15260. UNIV ROCHESTER,ROCHESTER,NY 14627. RI Cederwall, Bo/M-3337-2014 OI Cederwall, Bo/0000-0003-1771-2656 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 10 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900010 ER PT J AU KELLEY, SS SHOJAIE, SS AF KELLEY, SS SHOJAIE, SS TI PERMSELECTIVE PROPERTIES OF WELL CHARACTERIZED CELLULOSE MIXED ESTER COPOLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 10 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100608 ER PT J AU REYNOLDS, JG KHAN, MR AF REYNOLDS, JG KHAN, MR TI ENVIRONMENTAL-REGULATIONS OF THE PETROLEUM AND FUEL INDUSTRIES - TARGET AREAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 11 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101518 ER PT J AU HUA, PF LAFOSSE, D KOROLIJA, M SARANTITES, DG BAKTASH, C CROSS, C CEDERWALL, B FALLON, P LEE, IY MACHIAVELLI, A AF HUA, PF LAFOSSE, D KOROLIJA, M SARANTITES, DG BAKTASH, C CROSS, C CEDERWALL, B FALLON, P LEE, IY MACHIAVELLI, A TI SEARCH FOR HYPERDEFORMATION IN GD-146 USING THE MICROBALL AND GAMMASPHERE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WASHINGTON UNIV,ST LOUIS,MO 63130. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RI Cederwall, Bo/M-3337-2014 OI Cederwall, Bo/0000-0003-1771-2656 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 12 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900012 ER PT J AU PERRY, DL AF PERRY, DL TI MATERIALS CHEMISTRY FOR THE FUTURE - THE MATERIALS CHEMISTRY AND ENGINEERING SUBDIVISION OF THE INDUSTRIAL AND ENGINEERING CHEMISTRY DIVISION OF THE AMERICAN-CHEMICAL-SOCIETY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 12 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102092 ER PT J AU SUN, J WISHART, JF VANELDIK, R SHALDERS, RD SWADDLE, TW AF SUN, J WISHART, JF VANELDIK, R SHALDERS, RD SWADDLE, TW TI REDOX VOLUME CHANGE OF CYTOCHROME-C AND REACTION VOLUMES FOR ELECTRON-TRANSFER IN RUTHENIUM-MODIFIED CYTOCHROMES-C BY HIGH-PRESSURE ELECTROCHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. UNIV WITTEN HERDECKE,INST INORGAN CHEM,D-58448 WITTEN,GERMANY. UNIV CALGARY,DEPT CHEM,CALGARY T2N 1N4,ALBERTA,CANADA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 12 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100291 ER PT J AU CHUM, HL AF CHUM, HL TI THE ROLE OF PLASTICS RECYCLING IN WASTE MANAGEMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,DIV IND TECHNOL,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 13 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901539 ER PT J AU HUBLER, TL HALLEN, RT AF HUBLER, TL HALLEN, RT TI CHARACTERIZATION STUDIES OF RESORCINOL-FORMALDEHYDE ION-EXCHANGE RESINS FOR SELECTIVE REMOVAL OF CESIUM IN HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 13 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102093 ER PT J AU KHOO, TL AF KHOO, TL TI FEEDING AND DECAY OF SUPERDEFORMED BANDS - FROM CHAOS TO ORDER TO CHAOS TO ORDER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 13 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900013 ER PT J AU LEE, AK GREGG, HR MURRAY, AM REYNOLDS, JG AF LEE, AK GREGG, HR MURRAY, AM REYNOLDS, JG TI CHARACTERIZATION OF METALLOPETROPORPHYRINS AS PROCESS INDICATORS - PYROLYSIS OF GREEN RIVER OIL-SHALE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 13 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101958 ER PT J AU PADILLA, D SCHAKE, A AVENS, LR WORL, LA AF PADILLA, D SCHAKE, A AVENS, LR WORL, LA TI MAGNETIC SEPARATION TO REMOVE ACTINIDES FROM SOILS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,NUCL MAT PROC GRP,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 13 EP TECH PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101000 ER PT J AU BRINKMAN, MJ AF BRINKMAN, MJ TI DISCRETE DECAY FROM THE SUPERDEFORMED BAND IN PB-194 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 14 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900014 ER PT J AU GONG, M SASSOON, RE AF GONG, M SASSOON, RE TI A MODEL FOR CHEMICAL SPECIATIONS IN THE PLASMA OF AN ICP-MS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. SCI APPLICAT INT CORP,LA JOLLA,CA 92037. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 14 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100293 ER PT J AU SHANK, CV QUING, W SCHOENLEIN, RW PETEANU, LA ROSENTHAL, SJ MATHIES, RW AF SHANK, CV QUING, W SCHOENLEIN, RW PETEANU, LA ROSENTHAL, SJ MATHIES, RW TI FEMTOSECOND VIBRATIONALLY COHERENT PHOTOCHEMISTRY IN RHODOPSIN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RI Schoenlein, Robert/D-1301-2014 OI Schoenlein, Robert/0000-0002-6066-7566 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 14 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900627 ER PT J AU HUGHES, JR AHMAD, I BECKER, JA BRINKMAN, MJ CARPENTER, MP CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM DRAPER, JE DUYAR, C FALLON, P HARFENIST, S HENRY, EA HENRY, RG HOFF, RW JANSSENS, RVF KHOO, TL LAURITSEN, T LEE, IY RUBEL, E STEPHENS, FS STOYER, MA AF HUGHES, JR AHMAD, I BECKER, JA BRINKMAN, MJ CARPENTER, MP CEDERWALL, B DELEPLANQUE, MA DIAMOND, RM DRAPER, JE DUYAR, C FALLON, P HARFENIST, S HENRY, EA HENRY, RG HOFF, RW JANSSENS, RVF KHOO, TL LAURITSEN, T LEE, IY RUBEL, E STEPHENS, FS STOYER, MA TI LIFETIME MEASUREMENT IN EXCITED AND YRAST SUPERDEFORMED BANDS IN A=190 REGION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RI Cederwall, Bo/M-3337-2014; Carpenter, Michael/E-4287-2015 OI Cederwall, Bo/0000-0003-1771-2656; Carpenter, Michael/0000-0002-3237-5734 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 15 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900015 ER PT J AU SHOJAIE, SS KELLEY, SS RIALS, TG AF SHOJAIE, SS KELLEY, SS RIALS, TG TI PREPARATION AND CHARACTERIZATION OF CELLULOSE ESTER-BASED ORGANIC-INORGANIC HYBRID MATERIALS PREPARED USING THE SOL-GEL PROCESS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. SO FORESTRY EXPT STN,PINEVILLE,LA 71360. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 16 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100614 ER PT J AU GUTHRIE, RD RAMAKRISHNAN, S BRITT, PF BUCHANAN, AC DAVIS, BH AF GUTHRIE, RD RAMAKRISHNAN, S BRITT, PF BUCHANAN, AC DAVIS, BH TI THERMOLYSIS OF SILICA-IMMOBILIZED 4'-HYDROXY-1,2-DIPHENYLETHANE UNDER D2 - A COAL HYDROLIQUEFACTION MODEL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. UNIV KENTUCKY,CTR APPL ENERGY RES,LEXINGTON,KY 40511. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 17 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101835 ER PT J AU ARNEY, DSJ BURNS, CJ AF ARNEY, DSJ BURNS, CJ TI ORGANO-F-ELEMENT COMPLEXES CONTAINING MULTIPLY-BONDED FUNCTIONAL-GROUPS OF THE HEAVIER PNICTIDE AND CALCOGENIDE ELEMENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,INORGAN & STRUCT CHEM GRP CST3,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 18 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102194 ER PT J AU BAKTASH, C AF BAKTASH, C TI PROBING FINITE-TEMPERATURE EFFECTS IN WARM NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 18 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900018 ER PT J AU BRITT, PF BUCHANAN, AC AF BRITT, PF BUCHANAN, AC TI THERMOLYSIS OF PHENETHYL PHENYL ETHER - A MODEL OF ETHER LINKAGES IN LOW-RANK COAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 19 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101837 ER PT J AU KIROV, AS NICOLIS, NG SARANTITES, DG SOBOTKA, LG STRACENER, DW CHARITY, RJ AF KIROV, AS NICOLIS, NG SARANTITES, DG SOBOTKA, LG STRACENER, DW CHARITY, RJ TI POPULATION-PATTERNS IN SR-82 AND STRETCHED PROTON EMISSION BY TOTAL SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WASHINGTON UNIV,ST LOUIS,MO 63130. OAK RIDGE NATL LAB,OAK RIDGE,TN 37830. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 19 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900019 ER PT J AU BUCHANAN, AC BRITT, PF THOMAS, KB AF BUCHANAN, AC BRITT, PF THOMAS, KB TI RESTRICTED MASS-TRANSPORT EFFECTS ON FREE-RADICAL REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 20 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101838 ER PT J AU DIETZ, ML HORWITZ, EP CHIARIZIA, R DIAMOND, H RHOADS, S AF DIETZ, ML HORWITZ, EP CHIARIZIA, R DIAMOND, H RHOADS, S TI SEPARATION AND PRECONCENTRATION OF METAL-IONS FROM ACIDIC MEDIA BY EXTRACTION CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 20 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102100 ER PT J AU LEE, IY AF LEE, IY TI CONTINUUM GAMMA-RAY STUDIES ON ND-135 AND HF-171 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 20 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900020 ER PT J AU MORSS, LR ROGERS, RD AF MORSS, LR ROGERS, RD TI SYNTHESIS AND CRYSTAL-STRUCTURE OF AN F-ELEMENT COMPLEX WITH STRONG M-N BONDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NO ILLINOIS UNIV,DEPT CHEM,DE KALB,IL 60115. RI Rogers, Robin/C-8265-2013 OI Rogers, Robin/0000-0001-9843-7494 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 21 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102101 ER PT J AU ROTHENBERGER, KS CUGINI, AV SCHROEDER, KT VELOSKI, GA CIOCCO, MV AF ROTHENBERGER, KS CUGINI, AV SCHROEDER, KT VELOSKI, GA CIOCCO, MV TI THE EFFECT OF COAL ADDITION ON SOLVENT HYDROGENATION AND COAL CONVERSION IN A MODEL ALKYLNAPHTHALENE SOLVENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 21 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101839 ER PT J AU CUGINI, AV ROTHENBERGER, KS CIOCCO, MV VELOSKI, GA MARTELLO, DV AF CUGINI, AV ROTHENBERGER, KS CIOCCO, MV VELOSKI, GA MARTELLO, DV TI THE EFFECT OF PRESSURE AND SOLVENT QUALITY ON 1ST STAGE COAL-LIQUEFACTION WITH DISPERSED CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 22 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101840 ER PT J AU DELDEBBIO, JA AF DELDEBBIO, JA TI VOLATILIZATION OF CESIUM, TECHNETIUM AND CADMIUM FROM SIMULATED AND ACTUAL HIGH-LEVEL CALCINED WASTE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE IDAHO NUCL CO,IDAHO FALLS,ID 83403. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 22 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102102 ER PT J AU LESKO, KT AF LESKO, KT TI ANALYZING ENVIRONMENTAL-FACTORS INFLUENCING NUCLEOSYNTHESIS WITH NUCLEAR GAMMA-RAY SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract ID LU-176 C1 LAWRENCE BERKELEY LAB, DIV NUCL SCI, BERKELEY, CA 94720 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 22 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900022 ER PT J AU EGLINTON, TI VAIRAVAMURTHY, A AF EGLINTON, TI VAIRAVAMURTHY, A TI EVALUATION OF ABIOTIC SULFUR INCORPORATION AS AN ORGANIC-CARBON PRESERVATION MECHANISM IN PERU MARGIN SEDIMENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WOODS HOLE OCEANOG INST,DDEPT MARINE CHEM & GEOCHEM,WOODS HOLE,MA 02543. BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 24 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101969 ER PT J AU MCDONALD, MA ZAROCHAK, MF GRAHAM, WJ AF MCDONALD, MA ZAROCHAK, MF GRAHAM, WJ TI PRESSURE EFFECTS ON THE OXYHYDROCHLORINATION OF METHANE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 25 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101843 ER PT J AU PALMER, DA WESOLOWSKI, DJ MESMER, RE AF PALMER, DA WESOLOWSKI, DJ MESMER, RE TI THE HYDROGEN-ELECTRODE CONCENTRATION CELL AS A SENSITIVE TOOL IN HIGH-TEMPERATURE AQUEOUS CHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 26 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102106 ER PT J AU SHOWALTER, MC SHELNUTT, JA MEDFORTH, CJ QUIRKE, JME AF SHOWALTER, MC SHELNUTT, JA MEDFORTH, CJ QUIRKE, JME TI BIOMIMETIC CATALYST DEVELOPMENT FOR NATURAL-GAS CONVERSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DEPT FUEL SCI,ALBUQUERQUE,NM 87185. UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616. FLORIDA INT UNIV,DEPT CHEM,MIAMI,FL 33199. RI Shelnutt, John/A-9987-2009 OI Shelnutt, John/0000-0001-7368-582X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 26 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101844 ER PT J AU BALACHANDRAN, U DUSEK, JT SWEENEY, SM MIEVILLE, RL MAIYA, PS KLEEFISCH, MS PEI, S KOBYLINSKI, TP BOSE, AC AF BALACHANDRAN, U DUSEK, JT SWEENEY, SM MIEVILLE, RL MAIYA, PS KLEEFISCH, MS PEI, S KOBYLINSKI, TP BOSE, AC TI CERAMIC MEMBRANES FOR GENERATION OF PARTIAL-OXIDATION PRODUCTS FROM METHANE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,ARGONNE,IL 60439. AMOCO RES CTR,NAPERVILLE,IL 60566. US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 27 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101845 ER PT J AU MARSICK, DJ FAWCETT, H DSIDA, P AF MARSICK, DJ FAWCETT, H DSIDA, P TI CHEMICAL SAFETY TRAINING - EFFECTIVENESS AND ALTERNATIVES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,OFF OCCUPAT SAFETY,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 27 EP CHAS PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100940 ER PT J AU BOZELL, JJ BLACK, SK MYERS, M AF BOZELL, JJ BLACK, SK MYERS, M TI CLEAN FRACTIONATION OF LIGNOCELLULOSICS - A NEW PROCESS FOR PREPARATION OF ALTERNATIVE FEEDSTOCKS FOR THE CHEMICAL-INDUSTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 28 EP CELL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100626 ER PT J AU CAMAIONI, DM AUTREY, ST FRANZ, JA AF CAMAIONI, DM AUTREY, ST FRANZ, JA TI INTRINSIC BARRIERS FOR H-ATOM TRANSFER-REACTIONS INVOLVING HYDROCARBONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 29 EP PETR PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900556 ER PT J AU SRIVASTAVA, SC MAUSNER, LF KOLSKY, KL AF SRIVASTAVA, SC MAUSNER, LF KOLSKY, KL TI CRITERIA FOR THE SELECTION AND PRODUCTION OF RADIONUCLIDES FOR DIAGNOSIS AND THERAPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 29 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900029 ER PT J AU BOSE, AC STIEGEL, GJ AF BOSE, AC STIEGEL, GJ TI GAS-TO-LIQUIDS RESEARCH-PROGRAM OF THE US-DEPARTMENT-OF-ENERGY - A PROGRAMMATIC OVERVIEW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. BURNS & ROE SERV CORP,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 30 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101848 ER PT J AU KAPOOR, S JONAH, C MATHESON, M SAUER, M MEISEL, D AF KAPOOR, S JONAH, C MATHESON, M SAUER, M MEISEL, D TI MECHANISMS OF RADIOLYTIC EFFECTS IN HANFORD HLW SIMULANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 30 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102110 ER PT J AU KOLSKY, KL MEINKEN, GE MAUSNER, LF SRIVASTAVA, SC AF KOLSKY, KL MEINKEN, GE MAUSNER, LF SRIVASTAVA, SC TI A NEW RADIOCHEMICAL SEPARATION OF NO-CARRIER-ADDED CU-67 FROM ZINC-OXIDE TARGETS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 30 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900030 ER PT J AU AHMAD, I AUSTIN, SM BACK, B BAZIN, D BETTS, RR CALAPRICE, FP CHAN, KC CHISHTI, AA DUNFORD, R FOX, JD FREEDMAN, SJ FREER, M GAZES, SB GREENBERG, JS HALLIN, AL HAPP, T KALOSKAMIS, NI KASHY, E KUTSCHERA, W LAST, J LISTER, CJ LIU, M MAIER, MR MERCER, D MIKOLAS, D PERERA, PAA RHEIN, MD ROA, DE SCHIFFER, JP TRAINOR, T WILT, P WINFIELD, JS WOLANSKI, M WOLFS, FLH WUOSMAA, AH YOUNG, AR XU, G YURKON, JE AF AHMAD, I AUSTIN, SM BACK, B BAZIN, D BETTS, RR CALAPRICE, FP CHAN, KC CHISHTI, AA DUNFORD, R FOX, JD FREEDMAN, SJ FREER, M GAZES, SB GREENBERG, JS HALLIN, AL HAPP, T KALOSKAMIS, NI KASHY, E KUTSCHERA, W LAST, J LISTER, CJ LIU, M MAIER, MR MERCER, D MIKOLAS, D PERERA, PAA RHEIN, MD ROA, DE SCHIFFER, JP TRAINOR, T WILT, P WINFIELD, JS WOLANSKI, M WOLFS, FLH WUOSMAA, AH YOUNG, AR XU, G YURKON, JE TI APEX - THE ATLAS POSITRON EXPERIMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV BIRMINGHAM,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. ARGONNE NATL LAB,ARGONNE,IL 60439. UNIV CHICAGO,CHICAGO,IL 60637. QUEENS UNIV,KINGSTON K7L 3N6,ONTARIO,CANADA. GESELL SCHWERIONENFORSCH MBH,W-6100 DARMSTADT 11,GERMANY. PRINCETON UNIV,PRINCETON,NJ 08544. WASHINGTON UNIV,ST LOUIS,MO 63130. MICHIGAN STATE UNIV,E LANSING,MI 48824. FLORIDA STATE UNIV,TALLAHASSEE,FL 32306. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV ROCHESTER,ROCHESTER,NY 14627. YALE UNIV,NEW HAVEN,CT 06520. RI Hallin, Aksel/H-5881-2011; Freer, Martin/F-9379-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 32 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900032 ER PT J AU CHENG, X EDMONDS, CG WU, Q BAKHTIAR, R SPRINGER, DL MORRIS, BJ THRALL, BD CAMP, DG BRUCE, JE SMITH, RD AF CHENG, X EDMONDS, CG WU, Q BAKHTIAR, R SPRINGER, DL MORRIS, BJ THRALL, BD CAMP, DG BRUCE, JE SMITH, RD TI MOLECULAR-WEIGHT DETERMINATION OF MEGADALTON DNA USING MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 32 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100311 ER PT J AU FELMY, AR SCHROEDER, CC RAO, L RAI, D MASON, MJ FULTON, RW AF FELMY, AR SCHROEDER, CC RAO, L RAI, D MASON, MJ FULTON, RW TI SOLUBILITY RELATIONS FOR AQUEOUS SI, AL, AND CR(III) SPECIES IN CONCENTRATED ELECTROLYTE-SOLUTIONS - DEVELOPMENT OF ACCURATE AQUEOUS THERMODYNAMIC MODELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 32 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102111 ER PT J AU SCHROEDER, KT BOCKRATH, BC MILLER, RD AF SCHROEDER, KT BOCKRATH, BC MILLER, RD TI MODEL REACTIONS AS A MEASURE OF MOS2 ACTIVITY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECH CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 32 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101850 ER PT J AU CAMPBELL, JA LUCKE, RB WAHL, KL MONG, GM GRANT, KE BEAN, RM CLAUSS, SA AF CAMPBELL, JA LUCKE, RB WAHL, KL MONG, GM GRANT, KE BEAN, RM CLAUSS, SA TI ANALYSIS OF ORGANICS IN WASTE FROM TANK 101-SY USING DERIVATIZATION GAS-CHROMATOGRAPHY MASS-SPECTROMETRY (GC/MS) AND LIQUID-CHROMATOGRAPHY (LC) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 33 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102112 ER PT J AU WUOSMAA, A AF WUOSMAA, A TI EXOTIC ALPHA-CLUSTER STRUCTURES IN LIGHT-NUCLEI SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 33 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900033 ER PT J AU GLASS, RS BALAZSA, GB HRUBESH, LW PEKALA, RW MAYER, ST WANG, J AF GLASS, RS BALAZSA, GB HRUBESH, LW PEKALA, RW MAYER, ST WANG, J TI PROPERTIES AND SOME APPLICATIONS OF CARBON AND SILICA AEROGELS AND XEROGELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,LIVERMORE,CA 94550. NEW MEXICO STATE UNIV,DEPT CHEM & BIOCHEM,LAS CRUCES,NM 88003. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 34 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102113 ER PT J AU LINEHAN, JC MATSON, DW DARAB, JG AUTREY, ST FRANZ, JA CAMAIONI, DM AF LINEHAN, JC MATSON, DW DARAB, JG AUTREY, ST FRANZ, JA CAMAIONI, DM TI MECHANISMS OF IRON-BASED CATALYSTS INVESTIGATED USING MODEL COMPOUNDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 34 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101852 ER PT J AU MOLTZ, DM TIGHE, RJ OGNIBENE, TJ ROWE, MW CERNY, J AF MOLTZ, DM TIGHE, RJ OGNIBENE, TJ ROWE, MW CERNY, J TI NUCLEAR-STRUCTURE EXPERIMENTS WITH VERY-LOW-ENERGY PROTON DETECTORS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 34 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900034 ER PT J AU DEJONQHE, LC AF DEJONQHE, LC TI PROCESSING OF COMPOSITE CERAMIC POWDERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 35 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102114 ER PT J AU DUNN, RC METS, L XIE, XS AF DUNN, RC METS, L XIE, XS TI PROBING ELECTRON-TRANSFER ON A SINGLE-MOLECULE BASIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV CHICAGO, DEPT MOLEC GENET & CELL BIOL, CHICAGO, IL 60637 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 35 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900648 ER PT J AU FARCASIU, M PETROSIUS, SC AF FARCASIU, M PETROSIUS, SC TI HETEROGENEOUS CATALYSIS - MECHANISMS OF SELECTIVE CLEAVAGE OF STRONG CARBON-CARBON BONDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 35 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101853 ER PT J AU TOTH, KS AF TOTH, KS TI INVESTIGATION OF GROUND-STATE PROTON DECAYS WITH THE HOLIFIELD-RADIOACTIVE-ION-BEAM-FACILITY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 35 EP NUC0 PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900035 ER PT J AU VAIRAVAMURTHY, A ZHOU, W EGLINTON, T MANOWITZ, B AF VAIRAVAMURTHY, A ZHOU, W EGLINTON, T MANOWITZ, B TI SULFONATES - UBIQUITOUS OCCURRENCE OF A NOVEL CLASS OF ORGANIC SULFUR-COMPOUNDS IN MARINE-SEDIMENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,GEOCHEM PROGRAM,UPTON,NY 11973. WOODS HOLE OCEANOG INST,DEPT MARINE CHEM & GEOCHEM,WOODS HOLE,MA 02543. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 35 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101980 ER PT J AU WALDO, GS PENNERHAHN, JE VAIRAVAMURTHY, A MANOWITZ, B AF WALDO, GS PENNERHAHN, JE VAIRAVAMURTHY, A MANOWITZ, B TI APPLICATION OF XANES SELF-ABSORPTION CORRECTION TO THE ANALYSIS OF SULFUR FORMS IN GEOLOGICAL SAMPLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N CAROLINA STATE UNIV,DEPT BIOCHEM,RALEIGH,NC 27695. UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109. BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 36 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101981 ER PT J AU BUTLER, GW BAI, Y LOBNER, KEG PHILLIPS, DR ROSENAUER, D VIEIRA, DJ WOUTERS, JM AF BUTLER, GW BAI, Y LOBNER, KEG PHILLIPS, DR ROSENAUER, D VIEIRA, DJ WOUTERS, JM TI TEST OF A THIN TARGET HIGH-INTENSITY PRODUCTION SOURCE FOR RADIOACTIVE BEAMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 37 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900037 ER PT J AU KELLEY, RD AF KELLEY, RD TI MATERIALS CHEMISTRY RESEARCH SUPPORTED BY BASIC ENERGY SCIENCES, DEPARTMENT-OF-ENERGY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,DIV MAT SCI,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 38 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900650 ER PT J AU SCHEELE, RD BURGER, LL SELL, RL AF SCHEELE, RD BURGER, LL SELL, RL TI ENERGETICS AND KINETICS OF FERROCYANIDE AND NITRATE NITRITE REACTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, DEPT CHEM TECHNOL, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 39 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102118 ER PT J AU BRYAN, SA POOL, KH SELL, RL BRYAN, SL AF BRYAN, SA POOL, KH SELL, RL BRYAN, SL TI QUANTITATIVE MEASUREMENT OF CYANIDE COMPLEXES IN SIMULATED AND ACTUAL HANFORD FERROCYANIDE WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 40 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102119 ER PT J AU MANN, M CZERNIK, S WANG, D CHORNET, E AF MANN, M CZERNIK, S WANG, D CHORNET, E TI BIOMASS TO HYDROGEN VIA PYROLYSIS PLUS REFORMING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 40 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101858 ER PT J AU LILGA, MA SCHIEFELBEIN, GF LUMETTA, MR ALDERSON, EV BABAD, H MEACHAM, JE CASH, RJ AF LILGA, MA SCHIEFELBEIN, GF LUMETTA, MR ALDERSON, EV BABAD, H MEACHAM, JE CASH, RJ TI AGING OF FERROCYANIDE WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 41 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102120 ER PT J AU DIEBOLD, J PHILLIPS, S TYNDALL, D SCAHILL, J FEIK, C CZERNIK, S AF DIEBOLD, J PHILLIPS, S TYNDALL, D SCAHILL, J FEIK, C CZERNIK, S TI CATALYTIC UPGRADING OF BIOCRUDE OIL VAPORS TO PRODUCE HYDROCARBONS FOR REFINERY APPLICATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 42 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101860 ER PT J AU GEBHARD, SC GRATSON, DA FRENCH, RJ RATCLIFF, MA PATRICK, JA PAISLEY, MA ZHAO, X COWLEY, SW AF GEBHARD, SC GRATSON, DA FRENCH, RJ RATCLIFF, MA PATRICK, JA PAISLEY, MA ZHAO, X COWLEY, SW TI CHARACTERIZATION AND CATALYTIC CONDITIONING OF SYNTHESIS GAS PRODUCED BY BIOMASS GASIFICATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. COLORADO SCH MINES,DEPT CHEM & GEOCHEM,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 43 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101861 ER PT J AU SAMUELS, WD CAMAIOM, DM BURGER, LL BABAD, H AF SAMUELS, WD CAMAIOM, DM BURGER, LL BABAD, H TI EFFECTS OF AGING ON THE ENERGY CONTENT OF ORGANIC-COMPOUNDS IN THE HANFORD TANKS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 43 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102122 ER PT J AU SWEET, MP MEASE, RC JOSHI, V SRIVASTAVA, SC AF SWEET, MP MEASE, RC JOSHI, V SRIVASTAVA, SC TI SYNTHESIS OF A NOVEL BICYCLIC BIFUNCTIONAL CHELATING AGENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT MED,UPTON,NY 11973. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 43 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900043 ER PT J AU WOODRUFF, WH AF WOODRUFF, WH TI TIME-RESOLVED VIBRATIONAL SPECTROSCOPIES - STRUCTURE-SPECIFIC PROBES OF PROTEIN DYNAMICS AND FUNCTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 43 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102219 ER PT J AU SAMUELS, WD CAMAIONI, DM LENIHAN, BD BABAD, H AF SAMUELS, WD CAMAIONI, DM LENIHAN, BD BABAD, H TI DESTRUCTION OF ORGANIC-CHEMICALS IN HANFORD HLW TANKS BY RADIOLYTIC AND CHEMICAL AGING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 44 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102123 ER PT J AU LUCKE, RB MCVEETY, BD CLAUSS, TW FRUCHTER, JS GOHEEN, SC AF LUCKE, RB MCVEETY, BD CLAUSS, TW FRUCHTER, JS GOHEEN, SC TI ORGANIC-ANALYSIS OF THE HEADSPACE IN HANFORD WASTE TANKS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 46 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102125 ER PT J AU WATKIN, JG GORDON, PL AF WATKIN, JG GORDON, PL TI THE DETERMINATION OF RED OIL STABILITY IN HANFORD HLW SIMULANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 47 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102126 ER PT J AU BUELOW, SJ DELLORCO, PC ELY, J FOY, BR LE, L WILMANNS, E AF BUELOW, SJ DELLORCO, PC ELY, J FOY, BR LE, L WILMANNS, E TI DESTRUCTION OF ORGANICS IN HANFORD TANK WASTES USING HIGH-TEMPERATURE AQUEOUS SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 48 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102127 ER PT J AU ROWLEY, JK FIREMAN, EL CLEVELAND, BT DAVIS, R LANDE, K AF ROWLEY, JK FIREMAN, EL CLEVELAND, BT DAVIS, R LANDE, K TI A REEVALUATION OF THE COSMIC-RAY BACKGROUND FOR THE HOMESTAKE CHLORINE SOLAR-NEUTRINO DETECTOR SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV PENN,DEPT ASTRON,PHILADELPHIA,PA 19104. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 48 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900047 ER PT J AU MEEKS, AMS KELLER, JM AF MEEKS, AMS KELLER, JM TI IMPROVED SEPARATION TECHNIQUES FOR THE CHARACTERIZATION OF MIXED WASTE SAMPLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 49 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102128 ER PT J AU WILLIAMS, GP AF WILLIAMS, GP TI INFRARED MICROSPECTROSCOPY WITH SYNCHROTRON-RADIATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 50 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102129 ER PT J AU FAULON, JL AF FAULON, JL TI BUILDING INITIAL MOLECULAR-STRUCTURES FOR GEOCHEMICAL MACROMOLECULES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 51 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101996 ER PT J AU FOWLER, JS VOLKOW, ND DING, YS WOLF, AP AF FOWLER, JS VOLKOW, ND DING, YS WOLF, AP TI PET STUDIES OF COCAINE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 51 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900050 ER PT J AU TUMAS, W FENG, SG LELACHEUR, R MORGENSTERN, D WILLIAMS, P BUELOW, S BURNS, C FOY, B MITCHELL, M BURK, M WAYMOUTH, R AF TUMAS, W FENG, SG LELACHEUR, R MORGENSTERN, D WILLIAMS, P BUELOW, S BURNS, C FOY, B MITCHELL, M BURK, M WAYMOUTH, R TI CHEMICAL AND CATALYTIC TRANSFORMATIONS IN SUPERCRITICAL FLUIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 51 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101558 ER PT J AU CARLSON, GA FAULON, JL AF CARLSON, GA FAULON, JL TI MOLECULAR MODELING APPLIED TO COAL MACROMOLECULES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,DEPT FUEL SCI,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 52 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101997 ER PT J AU LAMBLE, GM KELLEY, MJ AF LAMBLE, GM KELLEY, MJ TI X-RAY-ABSORPTION SPECTROSCOPY OF METAL-CONTAMINATED SOILS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. DUPONT CO INC,WILMINGTON,DE 19880. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 52 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102131 ER PT J AU CARLSON, CD BRAY, LA BROWN, GN ELOVICH, RJ CARSON, KJ DESCHANE, JR TANAKA, PK AF CARLSON, CD BRAY, LA BROWN, GN ELOVICH, RJ CARSON, KJ DESCHANE, JR TANAKA, PK TI ION-EXCHANGE REMOVAL OF CESIUM FROM ALKALINE HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 54 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102133 ER PT J AU KOWALEWSKI, I VANDENBROUKE, M FAULON, JL AF KOWALEWSKI, I VANDENBROUKE, M FAULON, JL TI CONFORMATION OF TYPE-II AND TYPE-III ASPHALTENES USING MOLECULAR MODELING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 INST FRANCAIS PETR,F-92506 RUEIL MALMAISON,FRANCE. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 54 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101999 ER PT J AU LOTT, SE GARDNER, TJ MCLAUGHLIN, LI OELFKE, JB AF LOTT, SE GARDNER, TJ MCLAUGHLIN, LI OELFKE, JB TI COMPARISON OF NICKEL-MOLYBDENUM HYDROUS METAL-OXIDES WITH COMMERCIAL CATALYSTS FOR HDS HDN OF COAL LIQUIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,PROC RES DEPT,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 55 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101873 ER PT J AU GARDNER, TJ MCLAUGHLIN, LI LOTT, SE OELFKE, JB AF GARDNER, TJ MCLAUGHLIN, LI LOTT, SE OELFKE, JB TI CHARACTERIZATION OF HYDROUS TITANIUM-OXIDE (HTO)-SUPPORTED NIMO CATALYST COATINGS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,PROC RES DEPT,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 56 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101874 ER PT J AU SCHMIDT, AJ ELMORE, MR ORTH, RJ JONES, EO ZACHER, AH HART, TR NEUENSCHWANDER, GG POSHUSTA, JC AF SCHMIDT, AJ ELMORE, MR ORTH, RJ JONES, EO ZACHER, AH HART, TR NEUENSCHWANDER, GG POSHUSTA, JC TI LOW-TEMPERATURE HYDROTHERMAL DESTRUCTION OF ORGANICS IN HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 57 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102134 ER PT J AU BOWLES, TJ AF BOWLES, TJ TI THE RUSSIAN-AMERICAN GALLIUM SOLAR-NEUTRINO EXPERIMENT (SAGE) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV PHYS,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 58 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900057 ER PT J AU COLBY, SA DELEGARD, CH MCLAUGHLIN, DF DANIELSON, MJ AF COLBY, SA DELEGARD, CH MCLAUGHLIN, DF DANIELSON, MJ TI CALCINATION DISSOLUTION PROCESSING OF HANFORD WASTE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. WESTINGHOUSE ELECT CORP, CTR SCI & TECHNOL, PITTSBURGH, PA 15222 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 58 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102135 ER PT J AU VAIRAVAMURTHY, A ZHOU, W MANOWITZ, B AF VAIRAVAMURTHY, A ZHOU, W MANOWITZ, B TI DI-SULFIDE AND POLYSULFIDE CROSS-LINKING IN THE FORMATION OF HUMIC POLYMERS IN MARINE-SEDIMENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,GEOCHEM PROGRAM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 58 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102003 ER PT J AU LADERMAN, SS FISCHERCOLBRIE, A SHIMAZAKI, A MIYAZAKI, K KANEKO, M MATSUMURA, T BRENNAN, S TAKAURA, N PIANETTA, P KORTRIGHT, JB AF LADERMAN, SS FISCHERCOLBRIE, A SHIMAZAKI, A MIYAZAKI, K KANEKO, M MATSUMURA, T BRENNAN, S TAKAURA, N PIANETTA, P KORTRIGHT, JB TI SYNCHROTRON-RADIATION TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROSCOPY FOR WAFER SURFACE TRACE IMPURITY ANALYSIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 HEWLETT PACKARD CORP,PALO ALTO,CA 94304. STANFORD UNIV,SYNCHROTRON RADIAT LAB,STANFORD,CA 94305. TOSHIBA CO LTD,TOKYO,JAPAN. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 60 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102137 ER PT J AU NELSON, B EGLINTON, T SEEWALD, J AF NELSON, B EGLINTON, T SEEWALD, J TI TRANSFORMATIONS IN ORGANIC SULFUR SPECIATION DURING MATURATION OF MONTEREY SHALE - CONSTRAINTS FROM LABORATORY EXPERIMENTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WOODS HOLE OCEANOG INST,DEPT MARINE CHEM & GEOCHEM,WOODS HOLE,MA 02543. BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 62 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102007 ER PT J AU SHUH, DK EDELSTEIN, NM BUCHER, JJ AF SHUH, DK EDELSTEIN, NM BUCHER, JJ TI APPLICATION OF SYNCHROTRON-RADIATION TECHNIQUES TO CHEMICAL ISSUES IN THE ENVIRONMENTAL SCIENCES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 63 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102140 ER PT J AU KELLER, DA SHIBATA, M MANCHESTER, JI ORNSTEIN, RL REIN, R AF KELLER, DA SHIBATA, M MANCHESTER, JI ORNSTEIN, RL REIN, R TI SIDE-CHAIN PLACEMENT BY THE DEAD-END AND FUZZY-END ELIMINATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NEW YORK STATE DEPT HLTH, ROSWELL PK MEM INST, DEPT BIOPHYS, BUFFALO, NY 14263 USA. PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 64 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101371 ER PT J AU KOTTENSTETTE, RJ SCHNEIDER, DA LOY, DA AF KOTTENSTETTE, RJ SCHNEIDER, DA LOY, DA TI ABSOLUTE HYDROGEN DETERMINATION IN COAL-DERIVED HEAVY DISTILLATE SAMPLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 64 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101882 ER PT J AU CROWELL, RA HOLTOM, GR XIE, SX AF CROWELL, RA HOLTOM, GR XIE, SX TI DYNAMICS OF LIQUID WATER-MOLECULES PROBED BY FEMTOSECOND INFRARED-SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 65 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900677 ER PT J AU BROWN, SD SIRKECIOGLU, O ISMAIL, K ANDRESEN, J SNAPE, CE BUCHANAN, AC BRITT, PF AF BROWN, SD SIRKECIOGLU, O ISMAIL, K ANDRESEN, J SNAPE, CE BUCHANAN, AC BRITT, PF TI USE OF HYDROPYROLYSIS-MS TO PROBE THE HYDROCRACKING OF DIPHENYLALKANE LINKAGES IN THE SOLID-STATE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,GLASGOW G1 1XL,SCOTLAND. OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 66 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101884 ER PT J AU FRYBERGER, TB KUHN, WL WATSON, JS AF FRYBERGER, TB KUHN, WL WATSON, JS TI OVERVIEW OF THE EFFICIENT SEPARATIONS AND PROCESSING INTEGRATED PROGRAM (ESPIP) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, GERMANTOWN, MD USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 66 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102143 ER PT J AU JONES, TE AF JONES, TE TI HISTORY OF PROCESS CHEMISTRY AT HANFORD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 67 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102144 ER PT J AU LANDE, K CLEVELAND, BT DAILY, T DISTEL, J LEE, CK WILDENHAIN, P HAXTON, W BURMAN, R ALLEN, G GAVRIN, V AF LANDE, K CLEVELAND, BT DAILY, T DISTEL, J LEE, CK WILDENHAIN, P HAXTON, W BURMAN, R ALLEN, G GAVRIN, V TI DEVELOPMENT OF A NEW RADIOCHEMICAL SOLAR ELECTRON-NEUTRINO DETECTOR-I-127 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV PENN,DEPT ASTRON,PHILADELPHIA,PA 19104. UNIV WASHINGTON,SEATTLE,WA 98195. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV MARYLAND,COLLEGE PK,MD 20742. MOSCOW NUCL RES INST,MOSCOW,RUSSIA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 68 EP NUCL PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900067 ER PT J AU POHL, PI SMITH, DM AF POHL, PI SMITH, DM TI COMPUTER-AIDED MOLECULAR ANALYSIS OF IMOGOLITE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV NEW MEXICO,NSF,CTR MICRO ENGINEERED CERAM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,DEPT 6622,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 68 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102013 ER PT J AU LAFEMINA, JP BLANCHARD, DL BUNKER, BC COLTON, NG FELMY, AR FRANZ, JA LIU, J VIRDEN, JW AF LAFEMINA, JP BLANCHARD, DL BUNKER, BC COLTON, NG FELMY, AR FRANZ, JA LIU, J VIRDEN, JW TI TANK WASTE TREATMENT SCIENCE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 69 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102146 ER PT J AU MITRAKIRTLEY, S MULLINS, OC VANELP, J CRAMER, SP AF MITRAKIRTLEY, S MULLINS, OC VANELP, J CRAMER, SP TI NITROGEN XANES STUDIES OF ARGONNE COALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ROSE HULMAN INST TECHNOL,DEPT PHYS & APPL OPT,TERRE HAUTE,IN 47803. SCHLUMBERGER DOLL RES CTR,RIDGEFIELD,CT 06877. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 70 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101888 ER PT J AU LUMETTA, GJ RAPKO, BM COLTON, NG AF LUMETTA, GJ RAPKO, BM COLTON, NG TI WASHING AND CAUSTIC LEACHING OF HANFORD TANK SLUDGES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 71 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102148 ER PT J AU CARLSON, CD BRAY, LA BROWN, GN ELOVICH, RJ CARSON, KJ DESCHANE, JR TANAKA, PK AF CARLSON, CD BRAY, LA BROWN, GN ELOVICH, RJ CARSON, KJ DESCHANE, JR TANAKA, PK TI ION-EXCHANGE REMOVAL OF CESIUM FROM ALKALINE HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 73 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102150 ER PT J AU JACKSON, NB KOHLER, SD HARRINGTON, MS AF JACKSON, NB KOHLER, SD HARRINGTON, MS TI ATTRITION AND CARBON FORMATION ON IRON CATALYSTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,CTR ADV ENERGY TECHNOL,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 73 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101891 ER PT J AU MAHAJAN, D PANDYA, K AF MAHAJAN, D PANDYA, K TI ULTRAFINE PARTICLES OF IRON IN FISCHER-TROPSCH SYNTHESIS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 74 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101892 ER PT J AU KLAVETTER, EA BROWN, NE TRUDELL, D ANTHONY, RG GU, D THIBAUDERKEY, C AF KLAVETTER, EA BROWN, NE TRUDELL, D ANTHONY, RG GU, D THIBAUDERKEY, C TI ION-EXCHANGE PERFORMANCE OF CRYSTALLINE SILICO-TITANATES FOR CESIUM REMOVAL FROM HANFORD TANK WASTE SIMULANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. TEXAS A&M UNIV,COLLEGE STN,TX 77843. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 77 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102153 ER PT J AU WESTER, DW BRAY, LA BROWN, GN YATES, SF DEFILIPPI, IC SEDATH, RH CLEARFIELD, A CAHILL, RA KAFKA, TM GOKEN, GL ANDERSON, DR WHITE, LR BRUENING, RL TARBET, BJ KRAKOWIAK, KE AF WESTER, DW BRAY, LA BROWN, GN YATES, SF DEFILIPPI, IC SEDATH, RH CLEARFIELD, A CAHILL, RA KAFKA, TM GOKEN, GL ANDERSON, DR WHITE, LR BRUENING, RL TARBET, BJ KRAKOWIAK, KE TI NEW APPROACHES FOR REMOVING CESIUM AND STRONTIUM FROM AQUEOUS-SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. TEXAS A&M UNIV, DEPT CHEM, COLLEGE STN, TX 77843 USA. THREE M CO, DEPT NEW PROD, ST PAUL, MN 55144 USA. ALLIED SIGNAL INC, DES PLAINES, IL 60017 USA. IBC ADV TECHNOL, PROVO, UT 84603 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 78 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102154 ER PT J AU HOBBS, DT AF HOBBS, DT TI ELECTROCHEMICAL TREATMENT OF ALKALINE NUCLEAR WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER TECHNOL CTR,AIKEN,SC 29808. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 79 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102155 ER PT J AU HUNT, JE WINANS, RE AF HUNT, JE WINANS, RE TI COMPARISON OF SEVERAL CONTEMPORARY IONIZATION MASS ANALYZER TECHNIQUES FOR LARGE COMPONENTS OF COMPLEX FOSSIL-DERIVED MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 80 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101897 ER PT J AU VANDEGRIFT, GF LEONARD, RA REGALBUTO, MC COPPLE, JM JASKOT, RJ HORWITZ, EP AF VANDEGRIFT, GF LEONARD, RA REGALBUTO, MC COPPLE, JM JASKOT, RJ HORWITZ, EP TI USE OF THE GENERIC TRUEX MODEL TO DESIGN FLOWSHEETS FOR TREATING HIGH-LEVEL WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 80 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102156 ER PT J AU WELKER, MF HERMES, RE AF WELKER, MF HERMES, RE TI FUNCTIONAL AMPHIPHILIC POLYORGANOPHOSPHAZENES AS MACROMOLECULAR CHELATORS IN AQUEOUS ACTINIDE SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87544. LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 81 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102157 ER PT J AU AGBLEVOR, FA DAVIS, MF EVANS, RJ AF AGBLEVOR, FA DAVIS, MF EVANS, RJ TI MOLECULAR-BEAM MASS-SPECTROMETRIC CHARACTERIZATION OF BIOMASS PYROLYSIS PRODUCTS FOR FUELS AND CHEMICALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 82 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101899 ER PT J AU BUCHHOLZ, BA NUNEZ, L VANDEGRIFT, GF AF BUCHHOLZ, BA NUNEZ, L VANDEGRIFT, GF TI EFFECT OF ALPHA-RADIOLYSIS ON TRUEX-NPH SOLVENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. RI Buchholz, Bruce/G-1356-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 82 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102158 ER PT J AU BUCHHOLZ, BA NUNEZ, L VANDEGRIFT, GF AF BUCHHOLZ, BA NUNEZ, L VANDEGRIFT, GF TI RADIATION EFFECTS ON THE REMOVAL OF TRANSURANICS IN SOLUTION BY COATED MAGNETIC MICROPARTICLES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DEPT CHEM TECHNOL,ARGONNE,IL 60439. RI Buchholz, Bruce/G-1356-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 83 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102159 ER PT J AU YARBRO, SL PUNJAK, WA SCHREIBER, SB ORTIZ, EM JARVINEN, GD AF YARBRO, SL PUNJAK, WA SCHREIBER, SB ORTIZ, EM JARVINEN, GD TI FLOW SHEET DEVELOPMENT FOR THE REMEDIATION OF TANK SY-102 AT THE HANFORD NUCLEAR RESERVATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 85 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102161 ER PT J AU BLANCHARD, DL AF BLANCHARD, DL TI HANFORD TANK WASTES - CHEMICAL AND PHYSICAL-PROPERTIES OF WASTE LIQUIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 86 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102162 ER PT J AU TINGEY, JM AF TINGEY, JM TI PHYSICAL AND RHEOLOGICAL CHARACTERIZATION OF HANFORD TANK WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 87 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102163 ER PT J AU EPPLER, AS CREMERS, DA HICKMOTT, DD KOSKELO, AC FERRIS, MJ MARTIN, WB AF EPPLER, AS CREMERS, DA HICKMOTT, DD KOSKELO, AC FERRIS, MJ MARTIN, WB TI MATRIX EFFECTS STUDIES FOR PB AND BA EMISSION IN A LASER-INDUCED PLASMA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 88 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100367 ER PT J AU LILGA, MA SCHIEFELBEIN, GF LUMETTA, MR ALDERSON, EV BABAD, H MEACHAM, JE CASH, RJ AF LILGA, MA SCHIEFELBEIN, GF LUMETTA, MR ALDERSON, EV BABAD, H MEACHAM, JE CASH, RJ TI AGING OF FERROCYANIDE WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. WESTINGHOUSE HANFORD CO, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 88 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102164 ER PT J AU MARANO, JJ CHOI, GN KRAMER, SJ ROGERS, S AF MARANO, JJ CHOI, GN KRAMER, SJ ROGERS, S TI PRODUCT VALUATION OF FISCHER-TROPSCH DERIVED FUELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BURNS & ROE SERV CORP,PITTSBURGH,PA 15236. BECHTEL CORP,SAN FRANCISCO,CA 94119. AMOCO OIL CO,NAPERVILLE,IL 60566. US DOE,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 88 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101905 ER PT J AU BRYAN, SA POOL, KH SELL, RL BRYAN, SL AF BRYAN, SA POOL, KH SELL, RL BRYAN, SL TI QUANTITATIVE MEASUREMENT OF CYANIDE COMPLEXES IN SIMULATED AND ACTUAL HANFORD FERROCYANIDE WASTES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 89 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102165 ER PT J AU HOBBS, DT COLEMAN, CJ AF HOBBS, DT COLEMAN, CJ TI CHARACTERIZATION OF HIGH-LEVEL WASTE SALTCAKE STORED AT THE SAVANNA RIVER SITE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER TECHNOL CTR,AIKEN,SC 29808. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 91 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102167 ER PT J AU FELMY, AR RUSTAD, JR MASON, MJ AF FELMY, AR RUSTAD, JR MASON, MJ TI DEVELOPMENT OF A CHEMICAL-MODEL FOR HANFORD TANK WASTES - NA+-NO3--NO2--SO4(2-)-CO3(2-)-F--PO4(3-)-OH--AL(OH)4--H2O SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 92 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102168 ER PT J AU KARRAKER, DG AF KARRAKER, DG TI RADIATION EFFECTS ON PU SOLUBILITY IN ALKALINE WASTE SOLUTIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER TECHNOL CTR,AIKEN,SC 29892. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 93 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102169 ER PT J AU FELMY, AR AF FELMY, AR TI SOLUBILITY RELATIONS FOR AQUEOUS SI, AL, AND CR(III) SPECIES IN CONCENTRATED ELECTROLYTE-SOLUTIONS - DEVELOPMENT OF ACCURATE AQUEOUS THERMODYNAMIC MODELS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 94 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102170 ER PT J AU BAREFIELD, JE FERRAN, MD KOSKELO, A AF BAREFIELD, JE FERRAN, MD KOSKELO, A TI RAPID ANALYSIS OF HANFORD WASTE TANK SIMULANTS VIA OPTICAL-EMISSION FROM LASER-INITIATED MICROPLASMAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 95 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102171 ER PT J AU LIU, J VIRDEN, JW BUNKER, BC SONG, L AF LIU, J VIRDEN, JW BUNKER, BC SONG, L TI HANFORD TANK SLUDGES - INVESTIGATION OF PHYSICAL AND CHEMICAL-PROPERTIES USING TRANSMISSION ELECTRON-MICROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 96 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102172 ER PT J AU MAYORQA, MA JANUSZKIEWICZ, AJ LEHNERT, BE AF MAYORQA, MA JANUSZKIEWICZ, AJ LEHNERT, BE TI ENVIRONMENTAL NITROGEN-DIOXIDE EXPOSURE HAZARDS OF CONCERN TO THE US-ARMY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WALTER REED ARMY INST RES,DEPT RESP,WASHINGTON,DC 20307. LOS ALAMOS NATL LAB,LOS PULM BIOL TOXICOL PROGRAM,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 96 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901621 ER PT J AU CAMPBELL, AA SONG, L PATTILLO, MJ GRAFF, GL BUNKER, BC AF CAMPBELL, AA SONG, L PATTILLO, MJ GRAFF, GL BUNKER, BC TI MECHANISM OF CALCIUM-OXALATE MONOHYDRATE NUCLEATION AND GROWTH ON OXIDE SURFACES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, DEPT MAT SCI, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 97 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101156 ER PT J AU WU, Q BAKHTIAR, R VANORDEN, S HOFSTADLER, SA SMITH, RD AF WU, Q BAKHTIAR, R VANORDEN, S HOFSTADLER, SA SMITH, RD TI COLLISION-ACTIVATED DISSOCIATION OF LARGE BIOMOLECULES USING ELECTROSPRAY-IONIZATION FOURIER-TRANSFORM ION-CYCLOTRON MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, DEPT CHEM SCI, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 0 TC 0 Z9 0 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 97 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100376 ER PT J AU BUCK, EC BATES, JK AF BUCK, EC BATES, JK TI ELECTRON-BEAM MICROANALYSIS OF NUCLEAR WASTE GLASS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. RI Buck, Edgar/D-4288-2009; Buck, Edgar/N-7820-2013 OI Buck, Edgar/0000-0001-5101-9084 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 98 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102174 ER PT J AU FERRAN, MD BAREFIELD, JE AF FERRAN, MD BAREFIELD, JE TI THE ANALYSIS OF SOLID MIXED WASTE SAMPLES CONTAINING PLUTONIUM AND AMERICIUM VIA EMISSION FROM LASER-INDUCED MICROPLASMAS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV NUCL MAT & TECHNOL,LOS ALAMOS,NM 87544. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 99 EP IEC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102175 ER PT J AU GRAY, SK NOID, DW SUMPTER, BG AF GRAY, SK NOID, DW SUMPTER, BG TI SYMPLECTIC INTEGRATORS FOR CLASSICAL MOLECULAR-DYNAMICS SIMULATIONS AND WAVE-PACKET PROPAGATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,THEORET CHEM GRP,ARGONNE,IL 60439. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 100 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101407 ER PT J AU CENTENO, JA CASTILLO, J HERNANDEZ, SP FELIU, LA POLANCO, A PERRY, DL AF CENTENO, JA CASTILLO, J HERNANDEZ, SP FELIU, LA POLANCO, A PERRY, DL TI VIBRATIONAL ANALYSIS OF [CU(II)(NO3)(2,2'-BIPYRIDYL)2](NO3).H2O AND [CU(I)(2,2'-BIPYRIDYL)2](NO3) COMPLEXES AS EXPERIMENTAL-MODELS IN ENVIRONMENTAL-STUDIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 AGMUS,DEPT NAT SCI,RIO PIEDRAS,PR 00928. ARMED FORCES INST PATHOL,DEPT ENVIRONM & TOXICOL PATHOL,WASHINGTON,DC 20306. UNIV PUERTO RICO,DEPT CHEM,MAYAGUEZ,PR 00708. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 101 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101608 ER PT J AU WOLFRAM, JH ROGERS, RD SILVER, G ATTALLA, A PRISC, M AF WOLFRAM, JH ROGERS, RD SILVER, G ATTALLA, A PRISC, M TI BIOPROCESSING OF CONCENTRATED MIXED HAZARDOUS INDUSTRIAL-WASTE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MONTANA STATE UNIV,BOZEMAN,MT 59717. NATL ENGN LAB,IDAHO FALLS,ID. IDAHO NATL MOUND APPL TECHNOL LAB,MIAMISBURG,OH. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 101 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101160 ER PT J AU ZHOU, PZ WINSCHEL, RA KLUNDER, EB AF ZHOU, PZ WINSCHEL, RA KLUNDER, EB TI PREMIUM DISTILLATE PRODUCTS FROM DIRECT LIQUEFACTION OF COAL SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BURNS & ROE SERV CORP,PITTSBURGH,PA 15236. CONSOL INC,LIBRARY,PA 15129. US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 105 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101923 ER PT J AU GOLDFIELD, EM GRAY, SK HARDING, LB AF GOLDFIELD, EM GRAY, SK HARDING, LB TI QUANTUM DYNAMICS OF RENNER-TELLER VIBRONIC COUPLING - THE PREDISSOCIATION OF HCO SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. CORNELL UNIV,CTR THEORY,ITHACA,NY 14850. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 106 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900718 ER PT J AU MACHEL, HG KROUSE, HR FOGHT, JM RICIPUTI, LR COLE, DR AF MACHEL, HG KROUSE, HR FOGHT, JM RICIPUTI, LR COLE, DR TI THE DEVONIAN NISKU SOUR GAS PLAY, ALBERTA, CANADA - A UNIQUE NATURAL LABORATORY FOR STUDY OF THERMOCHEMICAL SULFATE REDUCTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV ALBERTA,DEPT GEOL,EDMONTON T6G 2E1,ALBERTA,CANADA. UNIV CALGARY,DEPT PHYS,CALGARY T2N 1N4,ALBERTA,CANADA. UNIV ALBERTA,DEPT MICROBIOL,EDMONTON T6G 2E1,ALBERTA,CANADA. OAK RIDGE NATL LAB,DIV CHEM,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 106 EP GEOC PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102051 ER PT J AU SHULTS, WD AF SHULTS, WD TI THE IMPACT OF THE DOE LABORATORIES ON ANALYTICAL-CHEMISTRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 106 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100385 ER PT J AU MALOY, JT LOVE, LJC HIRSCH, RF AF MALOY, JT LOVE, LJC HIRSCH, RF TI COMPUTER-APPLICATIONS IN THE UNDERGRADUATE ANALYTICAL-CHEMISTRY LABORATORY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SETON HALL UNIV,DEPT CHEM,S ORANGE,NJ 07079. US DOE,OFF HLTH & ENVIRONM RES,WASHINGTON,DC 20585. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 107 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100386 ER PT J AU SLOMKA, BJ AF SLOMKA, BJ TI DEASHING OF COAL LIQUIDS BY SONICALLY ASSISTED FILTRATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 109 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101927 ER PT J AU SMALLEY, JF FELDBERG, SW NEWTON, MD LIU, YP AF SMALLEY, JF FELDBERG, SW NEWTON, MD LIU, YP TI THE ELECTRON-TRANSFER KINETICS OF FERROCENE-TERMINATED ALKANETHIOL MONOLAYERS ON GOLD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 109 EP ANYL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26100388 ER PT J AU TAYLOR, CE AF TAYLOR, CE TI PETCS ON-SITE NATURAL-GAS CONVERSION EFFORTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 121 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101939 ER PT J AU DETERING, BA KONG, PC MAFFIA, GJ AF DETERING, BA KONG, PC MAFFIA, GJ TI FEASIBILITY STUDY OF A NOVEL THERMAL PLASMA PROCESS FOR NATURAL-GAS CONVERSION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 124 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101942 ER PT J AU MILLER, JR AF MILLER, JR TI POSING QUESTIONS ABOUT LONG-DISTANCE ELECTRON-TRANSFER SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 124 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900736 ER PT J AU CENA, RJ AF CENA, RJ TI A HOT-RECYCLED-SOLID OIL-SHALE RETORTING PROCESS FOR THE PRODUCTION OF SHALE OIL AND SPECIALTY CHEMICALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 125 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101943 ER PT J AU LEE, SK HAGAMAN, EW AF LEE, SK HAGAMAN, EW TI THE ACID-CATALYZED REACTIONS OF PENTAMETHYLBENZYL FLUORIDE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 144 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900219 ER PT J AU HENSON, BF ROBINSON, JM AF HENSON, BF ROBINSON, JM TI 2ND-HARMONIC GENERATION MEASUREMENTS OF SURFACE-COMPOSITION AND REACTIVITY OF SIMULATED ATMOSPHERIC AEROSOLS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 146 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900758 ER PT J AU LAWLESS, D KAPOOR, S MEISEL, D AF LAWLESS, D KAPOOR, S MEISEL, D TI PHOTOPHYSICAL EFFECTS OF BRIDGING CDS TO TIO2 USING MERCAPTOCARBOXYLIC ACIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 148 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101207 ER PT J AU BUTLER, PD MAGID, LJ HAMILTON, WA HAYTER, JB BAKER, SM SMITH, GS PYNN, R LUJAN, M AF BUTLER, PD MAGID, LJ HAMILTON, WA HAYTER, JB BAKER, SM SMITH, GS PYNN, R LUJAN, M TI IONIC-STRENGTH EFFECTS ON THE NEAR-SURFACE HEXAGONAL ORDERING OF MICELLES OF CETYLTRIMETHYLAMMONIUM 3,5-DICHLOROBENZOATE UNDER POISEUILLE FLOW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. LOS ALAMOS NATL LAB,CTR NEUTRON SCATTERING,LOS ALAMOS,NM 87544. RI Butler, Paul/D-7368-2011; Smith, Gregory/D-1659-2016 OI Smith, Gregory/0000-0001-5659-1805 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 153 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901678 ER PT J AU SU, WF LAI, RW AF SU, WF LAI, RW TI STUDY OF POLYMERIZATION KINETICS USING A SIMPLE PROPORTIONALITY LAW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. PITTSBURGH ENERGY TECHNOL CTR,PITTSBURGH,PA 15236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 153 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901168 ER PT J AU BRYCE, AL HELMER, B CLARK, SB STOUT, B RIZKALLA, E AF BRYCE, AL HELMER, B CLARK, SB STOUT, B RIZKALLA, E TI EXAFS AND RAMAN SPECTROPHOTOMETRY OF THE URANYL THIOCYANATE SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. UNIV CINCINNATI,DEPT CHEM,CINCINNATI,OH 45221. FLORIDA STATE UNIV,DEPT CHEM,TALLAHASSEE,FL 32306. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 156 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102333 ER PT J AU FALDI, A GENZER, J COMPOSTO, RJ DOZIER, WD AF FALDI, A GENZER, J COMPOSTO, RJ DOZIER, WD TI SEGREGATION AT THE POLYMER BINARY POLYMER BLEND INTERFACE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104. ARGONNE NATL LAB,ARGONNE,IL 60439. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 156 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901681 ER PT J AU HJELM, RP DOUGLAS, EP BENICEWICZ, BC AF HJELM, RP DOUGLAS, EP BENICEWICZ, BC TI THE SOLUTION STRUCTURE OF A LIQUID-CRYSTAL POLYMER WITH SMALL LIQUID-CRYSTAL THERMOSETS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545. RI Lujan Center, LANL/G-4896-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 158 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901683 ER PT J AU MATTES, BR MCBRANCH, D KOSKELO, A ROBINSON, JM LOVE, SP AF MATTES, BR MCBRANCH, D KOSKELO, A ROBINSON, JM LOVE, SP TI THE SYNTHESIS AND OPTICAL CHARACTERIZATION OF FULLERENE GLASSES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV MAT,LOS ALAMOS,NM 87545. LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 160 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900772 ER PT J AU FAULQUES, EC PERRY, DL ZUBKOWSKI, JD VALENTE, EJ AF FAULQUES, EC PERRY, DL ZUBKOWSKI, JD VALENTE, EJ TI RAMAN AND INFRARED-SPECTROSCOPY OF THE COBALT-EDTA SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 INST MAT,PHYS CRISTALLINE LAB,F-44072 NANTES 03,FRANCE. MISSISSIPPI COLL,DEPT CHEM,CLINTON,MS 39056. LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. JACKSON STATE UNIV,DEPT CHEM,JACKSON,MS 39217. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 162 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102338 ER PT J AU GATRONE, RC MITCHELL, CD RAUSCH, DJ DIETZ, ML AF GATRONE, RC MITCHELL, CD RAUSCH, DJ DIETZ, ML TI IONIC RECOGNITION - THE DESIGN OF LIGANDS SELECTIVE FOR MONOVALENT CATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 166 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900241 ER PT J AU GATRONE, RC SMITH, LA CLAPPERGOWDY, M DIETZ, ML HORWITZ, EP AF GATRONE, RC SMITH, LA CLAPPERGOWDY, M DIETZ, ML HORWITZ, EP TI ISOMER EFFECTS ON THE COMPLEXATION OF METAL-IONS BY CROWN-ETHERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 167 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900242 ER PT J AU GARRETT, BC SCHENTER, GK AF GARRETT, BC SCHENTER, GK TI VARIATIONAL TRANSITION-STATE THEORY METHODS FOR CALCULATIONS OF RATE CONSTANTS OF REACTIONS IN GAS AND SOLUTION PHASES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 173 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101480 ER PT J AU WAGNER, AF BURLEIGH, D AF WAGNER, AF BURLEIGH, D TI THE EXPLOITATION OF PARALLEL COMPUTERS IN THE QUANTUM DYNAMICS OF INELASTIC-SCATTERING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV REACTOR ANAL & SAFETY,DIV CHEM,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 190 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101497 ER PT J AU WUEBBLES, DJ PATTEN, KO KINNISON, DE CONNELL, PS AF WUEBBLES, DJ PATTEN, KO KINNISON, DE CONNELL, PS TI CFC AND HALON REPLACEMENTS - POTENTIAL EFFECTS ON OZONE AND CLIMATE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE LIVERMORE NATL LAB,DIV GLOBAL CLIMATE RES,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 191 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101698 ER PT J AU GOLDFIELD, EM AF GOLDFIELD, EM TI REACTIVE WAVEPACKET DYNAMICS FOR 4 ATOM SYSTEMS ON SCALABLE PARALLEL COMPUTERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. CORNELL UNIV,CTR THEORY,ITHACA,NY 14850. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 193 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101500 ER PT J AU HO, L BASH, PA AF HO, L BASH, PA TI SIMULATION ANALYSIS OF THE ENZYME REACTION-MECHANISM OF MALATE-DEHYDROGENASE USING A COMBINED QUANTUM MOLECULAR MECHANICS METHOD SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV REACTOR ANAL & SAFETY,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 195 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101502 ER PT J AU WIGNALL, GD LONDONO, JD ALAMO, RG MANDELKERN, L STEHLING, FC AF WIGNALL, GD LONDONO, JD ALAMO, RG MANDELKERN, L STEHLING, FC TI THE MORPHOLOGY OF BLENDS OF LINEAR AND BRANCHED POLYETHYLENES IN SOLID-STATE BY SANS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. FLORIDA STATE UNIV,TALLAHASSEE,FL 32306. EXXON CHEM CO,BAYTOWN,TX 77520. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 195 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901720 ER PT J AU LONDONO, JD WIGNALL, GD AF LONDONO, JD WIGNALL, GD TI THE FLORY-HUGGINS INTERACTION PARAMETER IN BLENDS OF POLYSTYRENE AND POLY(P-METHYLSTYRENE) FROM SMALL-ANGLE NEUTRON-SCATTERING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 197 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901722 ER PT J AU LUO, H MCPHERSON, DW LAMBERT, CR KNAPP, FF AF LUO, H MCPHERSON, DW LAMBERT, CR KNAPP, FF TI THE BROMINATED ANALOG OF IQNP BLOCKS MUSCARINIC-CHOLINERGIC RECEPTOR (M-ACHR) UPTAKE OF IQNP SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,NUCL MED GRP,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 197 EP MEDI PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102989 ER PT J AU XIE, XS DUNN, RC AF XIE, XS DUNN, RC TI DYNAMICS OF SINGLE MOLECULES AT GLASS SURFACES PROBED BY NEAR-FIELD FLUORESCENCE SPECTROSCOPY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 201 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900813 ER PT J AU JACOBS, SJ ROHLFING, CM CAHILL, PA AF JACOBS, SJ ROHLFING, CM CAHILL, PA TI REACTIONS AT THE EQUATOR OF C-70 - THEORY AND EXPERIMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 210 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900822 ER PT J AU MCDERMOTT, MT GREEN, JBD PORTER, MD AF MCDERMOTT, MT GREEN, JBD PORTER, MD TI FRICTION MEASUREMENTS AT SPONTANEOUSLY ADSORBED THIOLATE MONOLAYERS ON GOLD USING THE ATOMIC-FORCE MICROSCOPE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,CTR MICROANALYT INSTRUMENTAT,AMES,IA 50011. NR 2 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 217 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101275 ER PT J AU DESHMUKH, S MYERS, JD HESS, WP AF DESHMUKH, S MYERS, JD HESS, WP TI INVESTIGATION OF ACETYL-CHLORIDE PHOTODISSOCIATION BY PHOTOFRAGMENT IMAGING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 218 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900830 ER PT J AU MCDERMOTT, CA GREEN, JB MCDERMOTT, MT PORTER, MD AF MCDERMOTT, CA GREEN, JB MCDERMOTT, MT PORTER, MD TI IN-SITU SCANNING PROBE MICROSCOPIC INVESTIGATIONS OF ALKANETHIOLATE MONOLAYERS SPONTANEOUSLY FORMED AT AU(111) SUBSTRATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,CTR MICROANALYT INSTRUMENTAT,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 220 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101278 ER PT J AU KULKARNI, S KRAUSE, S WIGNALL, GD HAMMOUDA, B AF KULKARNI, S KRAUSE, S WIGNALL, GD HAMMOUDA, B TI INVESTIGATION OF PORE STRUCTURE IN SYNTHETIC MEMBRANES USING SMALL-ANGLE NEUTRON-SCATTERING (SANS) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 RENSSELAER POLYTECH INST,DEPT CHEM,TROY,NY 12180. NATL INST STAND & TECHNOL,CTR HIGH RESOLUT NEUTRON SCATTERING,GAITHERSBURG,MD 20899. UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 222 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901747 ER PT J AU LAMP, BD PORTER, MD HOBARA, D IAMABAYASHI, S NIKI, K CHUMANOV, GD COTTON, TM AF LAMP, BD PORTER, MD HOBARA, D IAMABAYASHI, S NIKI, K CHUMANOV, GD COTTON, TM TI DECOMPOSITION OF 4-PYRIDINETHIOLATE MONOLAYERS ADSORBED AT GOLD - IMPLICATIONS TO THE ELECTROLYSIS OF CYTOCHROMES AND RELATED SPECIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. YOKOHAMA NATL UNIV,DEPT PHYS CHEM,YOKOHAMA,JAPAN. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 223 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101281 ER PT J AU HUNG, NC NAGY, Z ZURAWSKI, DJ AF HUNG, NC NAGY, Z ZURAWSKI, DJ TI CHLORIDE-ION CATALYSIS OF THE CU++/CU+ REDOX REACTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 224 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101282 ER PT J AU MALEKANI, K RICE, JA LINE, JS AF MALEKANI, K RICE, JA LINE, JS TI COMPARISON OF TECHNIQUES FOR DETERMINING THE FRACTAL DIMENSION OF CLAY COLLOIDS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 S DAKOTA STATE UNIV,DEPT CHEM,BROOKINGS,SD 57007. OAK RIDGE NATL LAB,CTR SMALL ANGLE SCATTERING,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 234 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101741 ER PT J AU GREGORY, BW AVILA, A CHUMANOV, G UPHAUS, RA COTTON, TM AF GREGORY, BW AVILA, A CHUMANOV, G UPHAUS, RA COTTON, TM TI SURFACE-ENHANCED RAMAN-SPECTROSCOPY OF SELF-ASSEMBLED AND LANGMUIR-BLODGETT N-ALKYLSILANE THIN-FILMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 241 EP COLL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101299 ER PT J AU SUN, J WISHART, JF AF SUN, J WISHART, JF TI DRIVING-FORCE AND REORGANIZATION EFFECTS ON ELECTRON-TRANSFER IN RUTHENIUM-MODIFIED, COBALT-SUBSTITUTED CYTOCHROME-C SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 244 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102420 ER PT J AU SHREVE, AP MATHIES, RA AF SHREVE, AP MATHIES, RA TI EFFECTS OF THERMALIZATION IN RESONANCE RAMAN-SCATTERING - APPLICATIONS TO RHODOPSIN AND BACTERIORHODOPSIN SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 248 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900860 ER PT J AU CAHILL, PA MEINHARDT, MB BOBBITT, KL AF CAHILL, PA MEINHARDT, MB BOBBITT, KL TI DESIGN AND SYNTHESIS OF DYES FOR POLYIMIDE-BASED ELECTROOPTIC DEVICES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 249 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901263 ER PT J AU SIBBALD, M CHUMANOV, G COTTON, T AF SIBBALD, M CHUMANOV, G COTTON, T TI REDOX REACTIONS AT HALIDE-MODIFIED SURFACES OF LASER-ABLATED SILVER COLLOID SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 249 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900861 ER PT J AU TROUW, FR AF TROUW, FR TI NEUTRON SPECTROSCOPY OF ADSORBATES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,INTENSE PULSED NEUTRON SOURCE,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 262 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900874 ER PT J AU WILES, CC AF WILES, CC TI MUNICIPAL SOLID-WASTE COMBUSTION ASH - STATE-OF-THE-KNOWLEDGE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 266 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101773 ER PT J AU TRAVIS, CC BLAYLOCK, BP AF TRAVIS, CC BLAYLOCK, BP TI HEALTH RISKS ASSOCIATED WITH AIR EMISSIONS FROM MSW COMBUSTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,CTR RISK MANAGEMENT,OAK RIDGE,TN 37831. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 269 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101776 ER PT J AU SMALL, JH SHEA, KJ LOY, DA AF SMALL, JH SHEA, KJ LOY, DA TI SYNTHESIS AND POLYMERIZATION OF ACRYLAMIDE AND METHACRYLIMIDATE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CALIF IRVINE,DEPT CHEM,IRVINE,CA 92717. SANDIA NATL LABS,DEPT PROPERTIES ORGAN MAT,ALBUQUERQUE,NM 87185. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 272 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901286 ER PT J AU LIN, JB IJADIMAGHSOODI, S BARTON, TJ MEYER, RK BENNER, RE VARDENY, ZV WEI, X SMITH, AV SHINAR, J AF LIN, JB IJADIMAGHSOODI, S BARTON, TJ MEYER, RK BENNER, RE VARDENY, ZV WEI, X SMITH, AV SHINAR, J TI 1ST SYNTHESIS AND STUDY OF CUMULENE-CONTAINING CONJUGATED POLYMERS AS 3RD-ORDER NONLINEAR-OPTICAL ACTIVE MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. UNIV UTAH,DEPT ELECT ENGN,SALT LAKE CITY,UT 84112. UNIV UTAH,DEPT PHYS,SALT LAKE CITY,UT 84112. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 274 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901288 ER PT J AU STECKLE, WP DUKE, JR JORGENSEN, BS AF STECKLE, WP DUKE, JR JORGENSEN, BS TI COBALT DICARBOLLIDE CONTAINING POLYMER RESINS FOR CESIUM AND STRONTIUM UPTAKE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87504. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 274 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901798 ER PT J AU ZACHARIAH, MR WESTMORELAND, PR BURGESS, D TSANG, W MELIUS, CF AF ZACHARIAH, MR WESTMORELAND, PR BURGESS, D TSANG, W MELIUS, CF TI THEORETICAL PREDICTION OF THERMOCHEMISTRY AND KINETICS OF FLUOROCARBONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL INST STAND TECHNOL,GAITHERSBURG,MD. UNIV MASSACHUSETTS,AMHERST,MA 01003. SANDIA NATL LABS,LIVERMORE,CA 94550. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 284 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101791 ER PT J AU TATSUMOTO, K ELAM, CC EVANS, RJ LOOKER, M CHUM, HL AF TATSUMOTO, K ELAM, CC EVANS, RJ LOOKER, M CHUM, HL TI TERTIARY RECYCLING OF MIXED WASTE PLASTICS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,DIV IND TECHNOL,PROC RES BRANCH,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 287 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901811 ER PT J AU ELAM, CC MEGLEN, RR TATSUMOTO, K EVANS, RJ CHUM, HL AF ELAM, CC MEGLEN, RR TATSUMOTO, K EVANS, RJ CHUM, HL TI THE APPLICATION OF INTELLIGENT CHEMICAL-PROCESSING TO THE PROBLEM OF PLASTICS RECYCLING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,DIV IND TECHNOL,PROC RES BRANCH,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 288 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901812 ER PT J AU BROWNING, PW JENSEN, E WASCHEWSKY, GCG TATE, MR BUTLER, LJ AF BROWNING, PW JENSEN, E WASCHEWSKY, GCG TATE, MR BUTLER, LJ TI PROBING THE DYNAMICS AT A CONICAL INTERSECTION - EMISSION-SPECTRA OF DISSOCIATING H2S EXCITED IN THE 1ST ABSORPTION-BAND SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637. UNIV CHICAGO,DEPT CHEM,CHICAGO,IL 60637. ARGONNE NATL LAB,ARGONNE,IL 60439. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 296 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900908 ER PT J AU WOODRUFF, WH AF WOODRUFF, WH TI SPECTROSCOPY, DYNAMICS, AND FUNCTION OF HEME-COPPER OXIDASES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV CHEM SCI & TECHNOL,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 309 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102485 ER PT J AU MAGID, LJ BUTLER, PD KREKE, PJ HAMILTON, WA HAYTER, JB HAMMOUDA, B AF MAGID, LJ BUTLER, PD KREKE, PJ HAMILTON, WA HAYTER, JB HAMMOUDA, B TI KINETICS OF ALIGNMENT AND RELAXATION OF CETYLTRIMETHYLAMMONIUM 3,5-DICHLOROBENZOATE MICELLES UNDER COUETTE-FLOW SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. RI Butler, Paul/D-7368-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 310 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901834 ER PT J AU KENNEDY, JR AF KENNEDY, JR TI A NEW SUBCLASS OF INTERCALATION HOST MATERIALS - METAL-METAL BONDED BINARY METAL-HALIDES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 IDAHO NATL ENGN LAB,MAT CHEM UNIT,IDAHO FALLS,ID 83415. MONTANA STATE UNIV,DEPT CHEM,BOZEMAN,MT 59717. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 313 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102489 ER PT J AU KENDRICK, BK PACK, RT AF KENDRICK, BK PACK, RT TI POTENTIAL-ENERGY SURFACES FOR THE LOW-LYING 2A'' AND 2A' STATES OF HO2 - USE OF THE DIM MODEL TO FIT AB-INITIO DATA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 321 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900931 ER PT J AU HUANG, JR VALENTINI, JJ MUCKERMAN, JT AF HUANG, JR VALENTINI, JJ MUCKERMAN, JT TI QUASI-CLASSICAL TRAJECTORY STUDY OF POLYATOMIC REACTION DYNAMICS - H+CH4-]H2(V',J')+CH3 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 COLUMBIA UNIV,DEPT CHEM,NEW YORK,NY 10027. BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RI Muckerman, James/D-8752-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 342 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900952 ER PT J AU BEUHLER, AJ WARGOWSKI, DA SINGER, KD KOWALCZYK, TC KOSC, TZ CAHILL, PA SEAGER, CH MEINHARDT, MG AF BEUHLER, AJ WARGOWSKI, DA SINGER, KD KOWALCZYK, TC KOSC, TZ CAHILL, PA SEAGER, CH MEINHARDT, MG TI OPTICAL WAVE-GUIDES BASED ON PHOTODEFINABLE POLYIMIDE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CASE WESTERN RESERVE UNIV,DEPT PHYS,CLEVELAND,OH 44106. SANDIA LAB,ALBUQUERQUE,NM 87175. RI Singer, Kenneth/G-6553-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 351 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901365 ER PT J AU CAUSGROVE, TP WILLIAMS, S DYER, RB WOODRUFF, WH AF CAUSGROVE, TP WILLIAMS, S DYER, RB WOODRUFF, WH TI LASER TEMPERATURE-JUMP STUDY OF THE DYNAMICS OF PROTEIN-FOLDING IN THE 10(-10)-10(-3) 2ND RANGE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOS ALAMOS NATL LAB,DIV CST,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 358 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900967 ER PT J AU SUMPTER, BG NOID, DW GAKH, AA AF SUMPTER, BG NOID, DW GAKH, AA TI COMPUTATIONAL NEURAL NETWORKS AS TOOLS FOR PREDICTING PHYSICAL-PROPERTIES OF MOLECULAR-SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831. RI Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 368 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26900977 ER PT J AU CHEN, SH LIU, YC BAGLIONI, P LONOSTRO, P TEIXEIRA, J LIN, JS AF CHEN, SH LIU, YC BAGLIONI, P LONOSTRO, P TEIXEIRA, J LIN, JS TI COUNTERION CONDENSATION ON SPHERICAL MICELLES STUDIED BY COMBINED SMALL-ANGLE NEUTRON AND X-RAY-SCATTERING SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MIT,CAMBRIDGE,MA 02139. UNIV FLORENCE,I-50121 FLORENCE,ITALY. OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. CENS,LAB LEON BRILLOUIN,F-91190 GIF SUR YVETTE,FRANCE. RI Teixeira, Jose/E-6084-2010; Lo Nostro, Pierandrea/G-6585-2011; Baglioni, Piero/B-1208-2011 OI Baglioni, Piero/0000-0003-1312-8700 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 382 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901906 ER PT J AU WEISS, DE KALWEIT, HW KENSEK, RP AF WEISS, DE KALWEIT, HW KENSEK, RP TI CALIBRATION OF MONTE-CARLO SIMULATION CODE TO LOW-VOLTAGE ELECTRON-BEAMS THROUGH RADIOCHROMIC DOSIMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 THREE M CO,CORP RES,ST PAUL,MN 55144. SANDIA NATL LABS,DIV SIMULAT TECHNOL RES,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 390 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901404 ER PT J AU STINNETT, RW GREENLY, JB AF STINNETT, RW GREENLY, JB TI THE USE OF PULSED, HIGH-ENERGY ION-BEAMS FOR POLYMER SURFACE-TREATMENT SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. CORNELL UNIV,ITHACA,NY 14853. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 391 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901405 ER PT J AU GILLEN, KT CLOUGH, RL WISE, J MALONE, GM AF GILLEN, KT CLOUGH, RL WISE, J MALONE, GM TI EXPLANATION OF ENHANCED MECHANICAL DEGRADATION RATE FOR RADIATION-AGED POLYOLEFINS AS THE AGING TEMPERATURE IS DECREASED SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 393 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901407 ER PT J AU BRADLEY, RA HESS, WP AF BRADLEY, RA HESS, WP TI LASER INTERACTIONS WITH AN IONIC MOLECULAR-CRYSTAL - ABLATION OF SODIUM-NITRATE IN THE 6 EV BAND SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 406 EP PHYS PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901015 ER PT J AU PERRY, DL THOMPSON, AC AF PERRY, DL THOMPSON, AC TI SYNCHROTRON-INDUCED X-RAY-FLUORESCENCE MICROPROBE STUDIES OF THE COPPER-LEAD SULFIDE SOLUTION INTERFACE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 429 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102606 ER PT J AU CURTIS, CJ MICIC, OI SPRAGUE, JR NOZIK, AJ AF CURTIS, CJ MICIC, OI SPRAGUE, JR NOZIK, AJ TI SYNTHESIS AND CHARACTERIZATION OF INP QUANTUM DOTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 432 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102607 ER PT J AU CLOUGH, RL GILLEN, KT MALONE, GM WALLACE, JS AF CLOUGH, RL GILLEN, KT MALONE, GM WALLACE, JS TI RADIATION-INDUCED DISCOLORATION OF POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 480 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901494 ER PT J AU PLADALMAU, A BROSS, AD HURLBUT, CR MOSER, SW AF PLADALMAU, A BROSS, AD HURLBUT, CR MOSER, SW TI RADIATION EFFECTS IN POLYMERS FOR PLASTIC SCINTILLATION DETECTORS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. BICRON CORP,NEWBURY,OH 44065. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 482 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA269 UT WOS:A1994PA26901496 ER PT J AU BLACK, EP ULIBARRI, TA LOY, DA JAMISON, GM ASSINK, RA MYERS, ST SHEA, KJ AF BLACK, EP ULIBARRI, TA LOY, DA JAMISON, GM ASSINK, RA MYERS, ST SHEA, KJ TI SYNTHESIS AND CHARACTERIZATION OF ARYLENE-BRIDGED AND ALKYLENE-BRIDGED POLYSILSEQUIOXANE POLYDIMETHYLSILOXANE COMPOSITE-MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV CALIF IRVINE,DEPT CHEM,IRVINE,CA 92717. RI Loy, Douglas/D-4847-2009 OI Loy, Douglas/0000-0001-7635-9958 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 504 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102679 ER PT J AU MCCARLEY, RE HILSENBECK, SJ XIE, X AF MCCARLEY, RE HILSENBECK, SJ XIE, X TI AMORPHOUS PRECURSORS FOR LOW-TEMPERATURE PREPARATION OF CHEVREL PHASES MXMO6S8, AND THEIR TUNGSTEN ANALOGS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP 519 EP INOR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26102694 ER PT J AU VORRES, KS CRONAUER, DC CURTIS, CW BRANNAN, CJ AF VORRES, KS CRONAUER, DC CURTIS, CW BRANNAN, CJ TI ION-EXCHANGE AND ABSORPTION TECHNIQUES TO APPLY CATALYSTS FOR LIQUEFACTION OF LOWER RANK COALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ARGONNE NATL LAB,CHM 211,ARGONNE,IL 60439. AMOCO RES CTR,NAPERVILLE,IL 60566. AUBURN UNIV,DEPT CHEM ENGN,AUBURN,AL 36849. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 21 PY 1994 VL 208 BP A100 EP FUEL PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA PA261 UT WOS:A1994PA26101918 ER PT J AU WANG, SJ CHU, SY AF WANG, SJ CHU, SY TI AN ALGEBRAIC APPROACH TO THE INVERSE EIGENVALUE PROBLEM FOR A QUANTUM SYSTEM WITH A DYNAMICAL GROUP SO JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL LA English DT Article AB An algebraic approach to the inverse eigenvalue problem for a quantum system with a dynamical group is formulated for the first time. The one-dimensional problem is treated explicitly in detail for both the finite-dimensional and infinite-dimensional Hilbert spaces. For the finite-dimensional Hilbert space, the su(2) algebraic representation is used; while for the infinite-dimensional Hilbert space, the Heisenberg-Weyl algebraic representation is employed. The Fourier expansion technique is generalized to the operator space, which is suitable for analysis of irregular spectra. The polynomial operator basis is also used for the complement, which is appropriate for analysis of some simple Hamiltonians. The proposed new approach is applied to solve the classical inverse Sturm-Liouville problem and to study the problems of quantum regular and irregular spectra. C1 TH DARMSTADT, D-64220 DARMSTADT, GERMANY. GESELL SCHWERIONENFORSCH MBH, D-64220 DARMSTADT, GERMANY. LANZHOU UNIV, DEPT MODERN PHYS, LANZHOU 730000, PEOPLES R CHINA. RP LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. NR 20 TC 4 Z9 5 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0305-4470 J9 J PHYS A-MATH GEN JI J. Phys. A-Math. Gen. PD AUG 21 PY 1994 VL 27 IS 16 BP 5655 EP 5671 DI 10.1088/0305-4470/27/16/029 PG 17 WC Physics, Multidisciplinary; Physics, Mathematical SC Physics GA PD622 UT WOS:A1994PD62200029 ER PT J AU MEDFORTH, CJ MUZZI, CM SMITH, KM ABRAHAM, RJ HOBBS, JD SHELNUTT, JA AF MEDFORTH, CJ MUZZI, CM SMITH, KM ABRAHAM, RJ HOBBS, JD SHELNUTT, JA TI NOVEL LIGAND ORIENTATIONS IN PYRIDINE AND IMIDAZOLE COMPLEXES OF A HIGHLY SUBSTITUTED NONPLANAR PORPHYRIN, AND IMPLICATIONS FOR THE DESIGN OF PORPHYRINS AS REGIO-SPECIFIC AND STEREO-SPECIFIC OXIDATION CATALYSTS SO JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS LA English DT Article ID CYTOCHROMES-B; NICKEL(II) PORPHYRINS; MODELS; METALLOPORPHYRINS; PLANAR; TETRAPHENYLPORPHINATOIRON(III); DISTORTION; ROTATION AB Specific orientations are observed for pyridine and imidazole ligands complexed to a highly substituted nonplanar porphyrin, suggesting that suitably designed nonplanar porphyrins might be used to direct substrates and increase regio- and stereo-specificity in porphyrin catalysed oxidation reactions. C1 UNIV LIVERPOOL,DEPT CHEM,LIVERPOOL L69 3BX,ENGLAND. SANDIA NATL LABS,DEPT FUEL SCI 6211,ALBUQUERQUE,NM 87185. RP MEDFORTH, CJ (reprint author), UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616, USA. RI Shelnutt, John/A-9987-2009; Medforth, Craig/D-8210-2013; REQUIMTE, FMN/M-5611-2013; REQUIMTE, UCIBIO/N-9846-2013; Smith, Kevin/G-1453-2011 OI Shelnutt, John/0000-0001-7368-582X; Medforth, Craig/0000-0003-3046-4909; Smith, Kevin/0000-0002-6736-4779 NR 20 TC 21 Z9 21 U1 0 U2 3 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0022-4936 J9 J CHEM SOC CHEM COMM JI J. Chem. Soc.-Chem. Commun. PD AUG 21 PY 1994 IS 16 BP 1843 EP 1844 DI 10.1039/c39940001843 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA PB810 UT WOS:A1994PB81000012 ER PT J AU WANG, HH FERRARO, JR WILLIAMS, JM GEISER, U SCHLUETER, JA AF WANG, HH FERRARO, JR WILLIAMS, JM GEISER, U SCHLUETER, JA TI RAPID RAMAN-SPECTROSCOPIC DETERMINATION OF THE STOICHIOMETRY OF MICROSCOPIC QUANTITIES OF BEDT-TTF-BASED ORGANIC CONDUCTORS AND SUPERCONDUCTORS SO JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS LA English DT Article ID ALPHA-(BEDT-TTF)2I3; BETA-(BEDT-TTF)2I3; SCATTERING; VIBRATIONS AB An approximately linear dependence exists between the degree of charge transfer and the Raman-active C=C stretching frequencies in insulating, conducting, and superconducting salts of the electron-donor molecule BEDT-TTF, which may be used to rapidly deduce the stoichiometry of newly synthesized materials. RP WANG, HH (reprint author), ARGONNE NATL LAB,DIV CHEM & MAT SCI,ARGONNE,IL 60439, USA. NR 12 TC 98 Z9 99 U1 1 U2 8 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK MILTON ROAD, CAMBRIDGE, CAMBS, ENGLAND CB4 4WF SN 0022-4936 J9 J CHEM SOC CHEM COMM JI J. Chem. Soc.-Chem. Commun. PD AUG 21 PY 1994 IS 16 BP 1893 EP 1894 DI 10.1039/c39940001893 PG 2 WC Chemistry, Multidisciplinary SC Chemistry GA PB810 UT WOS:A1994PB81000037 ER PT J AU DEBOER, RJ PERELSON, AS AF DEBOER, RJ PERELSON, AS TI T-CELL REPERTOIRES AND COMPETITIVE-EXCLUSION SO JOURNAL OF THEORETICAL BIOLOGY LA English DT Article ID ANTIGEN PRESENTATION; IMMUNOLOGICAL MEMORY; PEPTIDE COMPLEXES; GENE; SELF; IA; HETEROGENEITY; ACCUMULATION; STIMULATION; MOLECULES AB Self-renewal is generally thought to play a major role in the maintenance of the T-cell repertoire. Here we develop a set of mathematical models for T-cell activation by peptides on antigen presenting cells (APCs). We show that competition between T cells is inherent to the processes involved in T cells binding APCs. We prove that for each dominant peptide only one T-cell clone can ultimately survive the competition. This is analogous to a classical result from theoretical ecology known as the principle of ''competitive exclusion''. These findings allow for three main results. First, competitive exclusion during an immune response to antigen implies that the clone(s) with the highest affinity for the dominant peptide(s) will outcompete all others. This allows for a form of ''affinity selection''. Second, the competition for binding antigen gives rise to regulation of T-cell numbers within a single done. This allows for a regulated form of T-cell memory when T cells are continuously activated by a persisting antigen. Third, competitive exclusion implies that for each peptide only one T-cell specificity can be maintained in the repertoire. If the T-cell repertoire is largely maintained owing to cross-reactivities with various antigens, competitive exclusion means that the diversity of the T-cell repertoire is limited by the number of antigens stimulating the system. If the cross-reactivities were to involve activation by self antigens this would confirm an earlier result suggesting that the T-cell repertoire is diverse owing to the diversity of the self environment. C1 LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP DEBOER, RJ (reprint author), UNIV UTRECHT,PADUALAAN 8,3584 CH UTRECHT,NETHERLANDS. RI De Boer, Rob/B-6050-2011 OI De Boer, Rob/0000-0002-2130-691X FU NIAID NIH HHS [AI28433] NR 55 TC 81 Z9 82 U1 0 U2 1 PU ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-5193 J9 J THEOR BIOL JI J. Theor. Biol. PD AUG 21 PY 1994 VL 169 IS 4 BP 375 EP 390 DI 10.1006/jtbi.1994.1160 PG 16 WC Biology; Mathematical & Computational Biology SC Life Sciences & Biomedicine - Other Topics; Mathematical & Computational Biology GA PG298 UT WOS:A1994PG29800008 PM 7967629 ER PT J AU DAVID, G HERSHCOVITCH, A STOLL, S WOODY, C BRAUNMUNZINGER, P HUTTER, R STACHEL, J ZOU, CM HORWITZ, N SOBOLEWSKI, Z AF DAVID, G HERSHCOVITCH, A STOLL, S WOODY, C BRAUNMUNZINGER, P HUTTER, R STACHEL, J ZOU, CM HORWITZ, N SOBOLEWSKI, Z TI PROTOTYPE TESTS OF A HIGH-RESOLUTION ELECTROMAGNETIC CALORIMETER USING UNDOPED CESIUM IODIDE-CRYSTALS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB A prototype detector for a high resolution electromagnetic calorimeter for the PHENIX experiment at RHIC has been built and tested. The detector consists of a 6x5 array of undoped cesium iodide crystals read out with photomultiplier tubes or vacuum phototetrodes. The response for electrons and pions was measured in the momentum range from 50 MeV/c to 4 GeV/c in several beam tests at Brookhaven and TRIUMF. The energy resolution for electrons can be parameterized as sigma(E)/E = 1.8%/square-root E + 0.3%/E + 0.8%, where E is in GeV, and the position resolution as sigma(x)(mm) = 4.7/square-root E + 0.5. The pi/e separation was determined to be in the range from 10(-2) at 100 MeV/c to a few times 10(-3) at 4 GeV/c. The time resolution was measured to be 127 ps for 150 MeV/c electrons after correcting for start counter timing. A laser calibration system is also described, along with the expected performance of the detector in the high multiplicity environment anticipated for relativistic heavy ion collisions at RHIC. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. SUNY STONY BROOK,STONY BROOK,NY 11794. SYRACUSE UNIV,SYRACUSE,NY 13244. 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 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD AUG 21 PY 1994 VL 348 IS 1 BP 87 EP 96 DI 10.1016/0168-9002(94)90845-1 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA PE299 UT WOS:A1994PE29900012 ER PT J AU PAYNE, SA SMITH, LK BEACH, RJ CHAI, BHT TASSANO, JH DELOACH, LD KWAY, WL SOLARZ, RW KRUPKE, WF AF PAYNE, SA SMITH, LK BEACH, RJ CHAI, BHT TASSANO, JH DELOACH, LD KWAY, WL SOLARZ, RW KRUPKE, WF TI PROPERTIES OF CRLISRALF6 CRYSTALS FOR LASER OPERATION SO APPLIED OPTICS LA English DT Article ID PUMPED CR-LISRALF6 LASER; EXCITED-STATE ABSORPTION; 50-FS PULSE GENERATION; CR3+LISRALF6; PERFORMANCE; LISRALF6; SYSTEM; CR-3+ AB We have performed several physical and optical measurements on the Cr:LiSAF (LiSrAlF6) laser material that are relevant to its laser performance, including thermal and mechanical properties, water durabilities, and Auger upconversion constants. The expansion coefficient, Young's modulus, fracture toughness, thermal conductivity, and heat capacity are all used to determine an overall thermomechanical figure of merit for the crystal. An investigation of the water durability suggests that the cooling solution should be maintained at pH = 7 to ameliorate problems associated with water dissolution. The Auger constant was found to become much more significant at higher Cr doping, in which excited-state migration leads to a substantial increase in the upconversion rate. We propose a design for a 50-W Cr:LiSAF laser system that is based on a detailed knowledge of all the relevant material parameters. C1 UNIV CENT FLORIDA, CTR RES ELECTROOPT & LASERS, ORLANDO, FL 32826 USA. RP PAYNE, SA (reprint author), LAWRENCE LIVERMORE NATL LAB, POB 5508, LIVERMORE, CA 94550 USA. NR 40 TC 75 Z9 78 U1 0 U2 3 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1994 VL 33 IS 24 BP 5526 EP 5536 PG 11 WC Optics SC Optics GA PE548 UT WOS:A1994PE54800008 PM 20935948 ER PT J AU SHAPIRO, DB MESTRE, MF MCCLAIN, WM HULL, PG SHI, Y QUINBYHUNT, MS HEARST, JE HUNT, AJ AF SHAPIRO, DB MESTRE, MF MCCLAIN, WM HULL, PG SHI, Y QUINBYHUNT, MS HEARST, JE HUNT, AJ TI DETERMINATION OF THE AVERAGE ORIENTATION OF DNA IN THE OCTOPUS SPERM ELEDONE-CIRRHOSSA THROUGH POLARIZED-LIGHT SCATTERING SO APPLIED OPTICS LA English DT Article DE POLARIZED LIGHT SCATTERING; MUELLER SCATTERING MATRIX; POLARIZABILITY; DNA ID INTENSITY DIFFERENTIAL SCATTERING; PARTICLES; MACROMOLECULES; ORGANIZATION; MATRIX AB The coupled-dipole approximation has been used to model polarized light-scattering data obtained from the sperm of the octopus Eledone cirrhosa. Mueller scattering-matrix elements (which describe how a sample alters the intensity and degree of polarization of scattered light) were measured as a function of angle. The sample was modeled as a helical fiber believed to correspond to a DNA protein complex. It was necessary to propose an inherent anisotropy in the polarizability of the fiber in order to fit the data. The direction of the principle axes of the polarizability were determined by comparing the model with experimental data. The results suggest that the 2-nm DNA fibers are perpendicular to the thick fiber that defines the helical geometry of the octopus sperm head. C1 LAWRENCE BERKELEY LAB, DIV CELL & MOLEC BIOL, BERKELEY, CA 94720 USA. LAWRENCE BERKELEY LAB, DIV ENERGY & ENVIRONM, BERKELEY, CA 94720 USA. TENNESSEE STATE UNIV, DEPT PHYS, NASHVILLE, TN 37209 USA. UNIV CALIF BERKELEY, GRAD GRP BIOPHYS, BERKELEY, CA 94720 USA. WAYNE STATE UNIV, DEPT CHEM, DETROIT, MI 48202 USA. NR 31 TC 8 Z9 8 U1 1 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD AUG 20 PY 1994 VL 33 IS 24 BP 5733 EP 5744 PG 12 WC Optics SC Optics GA PE548 UT WOS:A1994PE54800035 PM 20935975 ER PT J AU ZUREK, WH QUINN, PJ SALMON, JK WARREN, MS AF ZUREK, WH QUINN, PJ SALMON, JK WARREN, MS TI LARGE-SCALE STRUCTURE AFTER COBE - PECULIAR VELOCITIES AND CORRELATIONS OF COLD DARK-MATTER HALOS SO ASTROPHYSICAL JOURNAL LA English DT Article DE DARK MATTER; GALAXIES, CLUSTERING; GALAXIES, FORMATION; GALAXIES, STRUCTURE; METHODS, NUMERICAL ID N-BODY SIMULATIONS; GALAXY REDSHIFTS; UNIVERSE; FLUCTUATIONS; BIAS; CODE AB Large N-body simulations on parallel supercomputers allow one to simultaneously investigate large-scale structure and the formation of galactic halos with unprecedented resolution. Our study shows that the masses as well as the spatial distribution of halos on scales of tens of megaparsecs in a cold dark matter (CDM) universe with the spectrum normalized to the anisotropies detected by COBE is compatible with the observations. We also show that the average value of the relative pairwise velocity dispersion sigma(v) - used as a principal argument against COBE-normalized CDM models-is significantly lower for halos than for individual particles. When the observational methods of extracting sigma(v) are applied to the redshift catalogs obtained from the numerical experiments, estimates differ significantly between different observation-sized samples and overlap observational estimates obtained following the same procedure. C1 MT STROMLO & SIDING SPRING OBSERV,WESTON,ACT 2611,AUSTRALIA. CALTECH,CONCURRENT SUPERCOMP FACIL,PASADENA,CA 91125. RP ZUREK, WH (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. RI Quinn, Peter/B-3638-2013; OI Warren, Michael/0000-0002-1218-7904 NR 29 TC 79 Z9 79 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD AUG 20 PY 1994 VL 431 IS 2 BP 559 EP 568 DI 10.1086/174507 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PC148 UT WOS:A1994PC14800009 ER PT J AU KLEINMAN, LI AF KLEINMAN, LI TI LOW AND HIGH NOX TROPOSPHERIC PHOTOCHEMISTRY SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID UNITED-STATES; OZONE PRODUCTION; STEADY-STATES; DEPENDENCE; CHEMISTRY; ATMOSPHERE; PRECURSORS; PEROXIDE; SUMMER; MODEL AB Emission inputs to the troposphere are processed in two fundamentally different ways, leading to two atmospheric states with greatly different properties. We define these states in terms of rates of NO(x) emissions and radical production. In the low NO(x) state, trace gas inputs to the atmosphere are removed primarily by oxidation reactions. In the high NO(x) state the oxidative potential of the atmosphere is greatly diminished and primary pollutants build up, as alternate removal processes are slow. We show here that this dual behavior is due to a titrationlike reaction between NO(x) and free radicals in which either reactant can be in excess. RP KLEINMAN, LI (reprint author), BROOKHAVEN NATL LAB, DEPT APPL SCI, DIV ENVIRONM CHEM, UPTON, NY 11973 USA. NR 28 TC 85 Z9 86 U1 4 U2 13 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD AUG 20 PY 1994 VL 99 IS D8 BP 16831 EP 16838 DI 10.1029/94JD01028 PG 8 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA PC944 UT WOS:A1994PC94400042 ER PT J AU SMYTH, SB PETERS, LK BERKOWITZ, CM DAUM, PH RODGERS, MO AF SMYTH, SB PETERS, LK BERKOWITZ, CM DAUM, PH RODGERS, MO TI SO2 AND NOX CONVERSION RATES IN THE KUWAIT OIL FIRE SMOKE PLUME SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID PHOTOCHEMICAL OXIDANT MODEL; SCALE ACID DEPOSITION; PAN AB Aircraft measurements of the Kuwait oil fire smoke plumes during August 1991 are examined to estimate the conversion rates of SO2 and NO(X) (NO+NO2) to sulfate and nitrate, respectively. A method based on evaluating a Lagrangian mass conservation equation for the ratios Of SO2 and NO(X) to CO2 is used to estimate plume dilution and conversion rates. The loss process is expressed as first and second order, and NO, concentration serves as a surrogate for the oxidizing species in the second-order reaction. Continuous measurements Of SO2 and NO(X) within the smoke plume indicate that SO2 and NO(X) conversion rates were approximately 1 % h-1, and 2% h-1, respectively, 100 km from the sources; further downwind, both conversion rates decreased. A box model is used to simulate the chemistry in the plume; SO2 and NO(X) conversion rates predicted by the box model were less-than-or-equal-to 1% h-1 and 2% to 30% h-1, respectively, depending on time of day and distance from the source. The dependence of the modeled conversion rate on the time of day suggests that the conversion Of SO2 and NO(X) calculated from the field data may be the average conversion rate associated with nighttime and early-morning chemistry. C1 BROOKHAVEN NATL LAB, DIV ENVIRONM SCI, UPTON, NY 11786 USA. PACIFIC NW LAB, DEPT ATMOSPHER SCI, RICHLAND, WA 99352 USA. NR 29 TC 3 Z9 3 U1 0 U2 3 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 AUG 20 PY 1994 VL 99 IS D8 BP 16933 EP 16944 DI 10.1029/94JD00669 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA PC944 UT WOS:A1994PC94400051 ER PT J AU BAHNMAIER, AH ENGST, T JONES, H COLSON, SD AF BAHNMAIER, AH ENGST, T JONES, H COLSON, SD TI ROTATIONALLY RESOLVED SPECTROSCOPY OF THE C-X BAND OF (NH3)-N-15 BY INFRARED-ULTRAVIOLET DOUBLE-RESONANCE SO MOLECULAR PHYSICS LA English DT Article ID MULTIPHOTON IONIZATION SPECTROSCOPY; RYDBERG STATE; AMMONIA; NH3; COINCIDENCE AB Double resonance measurements on (NH3)-N-15 in a free expansion jet are reported. These were carried out using a continuous wave (CW) CO2 laser and a pulsed ultraviolet (UV) laser system. Infrared radiation was used to prepare molecules in individual rotational levels of the upsilon(2) = 1 vibrational state of the electronic ground state of [N-15]ammonia. These molecules were then photoionized via transitions of the ($) over tilde C-($) over tilde X band in a (2 + 1) process using the doubled output of a pulsed dye laser. The ion signal was detected using a time of flight mass spectrometer. Two known coincidences between CO2 laser lines and individual rovibrational transitions of (NH3)-N-15 were used to populate the (J, K) = (5, 4) and (3, 0) symmetric levels of upsilon(2) = 1. Double resonance signals corresponding to O, P, Q, R, and S branch two photon transitions in the ($) over tilde C'-($) over tilde X band were observed and measured accurately. These data were augmented by conventional (2 + 1) REMPI measurements on the 2(0)(0), 2(0)(1), and 2(0)(2) sub-bands of (NH3)-N-15. A complete set of molecular parameters for the upsilon(2) = 0, 1, and 2 levels of the ($) over tilde C' state was calculated from these data. The results represent the most detailed information so far produced over the ($) over tilde C' state of ammonia. The relevance of these experiments for the investigation of molecular clusters produced in a free expansion jet is discussed. C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RP BAHNMAIER, AH (reprint author), UNIV ULM, CHEM PHYS ABT, LASERANWENDUNGEN GRP, D-89069 ULM, GERMANY. NR 15 TC 2 Z9 2 U1 1 U2 3 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0026-8976 J9 MOL PHYS JI Mol. Phys. PD AUG 20 PY 1994 VL 82 IS 6 BP 1203 EP 1212 DI 10.1080/00268979400100854 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PH141 UT WOS:A1994PH14100009 ER PT J AU BARDEEN, CJ SHANK, CV AF BARDEEN, CJ SHANK, CV TI ULTRAFAST DYNAMICS OF THE SOLVENT SOLUTE INTERACTION MEASURED BY FEMTOSECOND 4-WAVE-MIXING - LD690 IN N-ALCOHOLS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID RESONANCE RAMAN INTENSITIES; SOLVATION DYNAMICS; ROOM-TEMPERATURE; SPECTRAL DIFFUSION; LARGE MOLECULES; NILE BLUE; RELAXATION; LIQUIDS; STATE; TIME AB The fast dynamics of the oxazine dye LD690 in a series of n-alcohols are investigated using several techniques, including linear absorption, resonance Raman, and the femtosecond three-pulse photon echo. The systematic variation in the dynamics as one goes from methanol to 1-pentanol can be explained in terms of processes stationary on the femtosecond timescale (inhomogeneous broadening) and a fast process with a solvation correlation function M(t) = sech2(t/tau(C)) where tau(C) = 20 fs. The relative contributions of the fast and slow processes to the spectral broadening change as we increase the alcohol chain length. C1 LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720. RP BARDEEN, CJ (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 28 TC 57 Z9 57 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD AUG 19 PY 1994 VL 226 IS 3-4 BP 310 EP 316 DI 10.1016/0009-2614(94)00745-4 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PC587 UT WOS:A1994PC58700015 ER PT J AU DEUTSCH, PW CURTISS, LA AF DEUTSCH, PW CURTISS, LA TI A THEORETICAL-STUDY OF TRIATOMIC CARBON SILICON MIXED CLUSTERS - RELATIVE ENERGIES AND BINDING-ENERGIES SO CHEMICAL PHYSICS LETTERS LA English DT Article ID GAUSSIAN-2 THEORY; GEOMETRICAL STRUCTURE; ELECTRONIC-STRUCTURE; GROUND-STATE; SIC2; SI2C; SI-3; SI3; MOLECULES; SPECTRUM AB The Gaussian-2 (G2) theoretical procedure, based on ab initio molecular orbital theory, is used to calculate the energies of mixed triatomic clusters of carbon and silicon. The G2 energies are used to derive accurate binding energies which are compared with experimental values. C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP DEUTSCH, PW (reprint author), PENN STATE UNIV,DEPT PHYS,MONACA,PA 15061, USA. NR 35 TC 22 Z9 22 U1 0 U2 0 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 AUG 19 PY 1994 VL 226 IS 3-4 BP 387 EP 391 DI 10.1016/0009-2614(94)00749-7 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PC587 UT WOS:A1994PC58700026 ER PT J AU SANDERS, RW LEEPER, DA KING, CH PORTER, KG AF SANDERS, RW LEEPER, DA KING, CH PORTER, KG TI GRAZING BY ROTIFERS AND CRUSTACEAN ZOOPLANKTON ON NANOPLANKTONIC PROTISTS SO HYDROBIOLOGIA LA English DT Article DE FOOD WEB; PROTOZOA; ROTIFERS; CRUSTACEANS ID FILTER FEEDING ZOOPLANKTON; FRESH-WATER ZOOPLANKTON; EUTROPHIC LAKE; RELATIVE IMPORTANCE; SEASONAL PATTERNS; FOOD-WEBS; PLANKTONIC COMMUNITY; BACTERIAL PRODUCTION; NATURAL-POPULATIONS; MONOMICTIC LAKE AB Predation on nanoflagellates by metazoan zooplankton was investigated using a radioactively labeled flagellate, Poterioochromonas malhamensis, as a tracer cell in laboratory incubations of freshly collected plankton assemblages. Experiments conducted in the fall, winter and spring indicated that rotifers dominated the grazing on nanoflagellates by metazoans in the winter (68%) and spring (92%). Rotifer grazing was not determined in the autumn. It is likely that the greater impact of rotifer grazing in the spring was due to the occurrence of abundant filamentous cyanobacteria and gelatinous colonial phytoplankton which selectively depressed feeding rates of crustaceans compared to rotifers. Crustacean predation on nanoflagellates was highest in the autumn when cladocerans (primarily Daphnia spp.) were abundant. Predation by metazoan zooplankton in this lake appeared capable of removing the total standing stock of heterotrophic and phototrophic nanoplankton in < 1 d. Impacts of ciliated protozoa on nanoplankton, calculated from abundances and literature feeding rates, ranged from approximately one-third to four times that of metazoan predation depending on season and method of calculation. The relative importance of the different groups of predators appears to vary seasonally which is expected to alter the transfer of energy, carbon and nutrients from bacteria to higher trophic levels. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29801. CTR DIS CONTROL,DIV BACTERIAL & MYCOT DIS,ATLANTA,GA 30333. UNIV GEORGIA,ATHENS,GA 30602. RP SANDERS, RW (reprint author), ACAD NAT SCI PHILADELPHIA,1900 BENJAMIN FRANKLIN PKWY,PHILADELPHIA,PA 19103, USA. RI Sanders, Robert/C-1116-2011 OI Sanders, Robert/0000-0001-7264-1059 NR 69 TC 38 Z9 38 U1 1 U2 7 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0018-8158 J9 HYDROBIOLOGIA JI Hydrobiologia PD AUG 19 PY 1994 VL 288 IS 3 BP 167 EP 181 DI 10.1007/BF00006240 PG 15 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA PF780 UT WOS:A1994PF78000004 ER PT J AU KOLBERT, AC GRANDINETTI, PJ BALDWIN, M PRUSINER, SB PINES, A AF KOLBERT, AC GRANDINETTI, PJ BALDWIN, M PRUSINER, SB PINES, A TI MEASUREMENT OF INTERNUCLEAR DISTANCES BY SWITCHED ANGLE SPINNING NMR SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Letter ID ROTATING SOLIDS; AMORPHOUS SOLIDS; SPECTROSCOPY; RESONANCE; PATTERNS; PROTEIN AB Dipolar switched angle spinning, an NMR technique due to Terao et al. [Terao, T.; Miura H.; Saika, A, J. Chem. Phys. 1986, 85, 3816], has been used to measure C-13-C-13 distances in the solid state. The experiment involves rotation of the sample at two different angles during different periods of a two-dimensional experiment. An evolution period with off-magic-angle spinning and chemical shift refocusing, followed by detection of the signal under magic angle spinning, yields scaled Pake patterns in omega(1), correlated with their isotropic shifts in omega(2) allowing the high-resolution measurement of dipolar couplings. We demonstrate this experiment on samples of doubly C-13 labeled zinc acetate and a 14 amino acid peptide, in which we show that under optimal conditions distances of up to 5 Angstrom may be measured. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. RP KOLBERT, AC (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. RI Grandinetti, Philip/F-1084-2010 OI Grandinetti, Philip/0000-0003-0102-316X NR 20 TC 13 Z9 13 U1 2 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD AUG 18 PY 1994 VL 98 IS 33 BP 7936 EP 7938 DI 10.1021/j100084a003 PG 3 WC Chemistry, Physical SC Chemistry GA PC619 UT WOS:A1994PC61900003 ER PT J AU ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U ANDREAZZA, A ANTILOGUS, P APEL, WD APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELTRAN, P BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENSKY, MS BILLOIR, P BJARNE, J BLOCH, D BLOCKI, J BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUSY, A BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASES, R CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DAVIES, J DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C LASO, MDMD DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D EHRET, R EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FENYUK, A FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GERDYUKOV, L GIACOMELLI, P GILLESPIE, D GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, JJGY GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZINAI, E GROSDIDIER, G GUNNARSSON, P GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K WAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNADEZ, JJ HERNANDO, JA HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HONORE, PF HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JACOBSSON, R JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONKER, M JONSSON, L JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSENEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUPINSKI, W KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E LIKO, D LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTERZOS, A MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTI, S MARTINEZRIVERO, C MARTINEZVIDAL, F MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NISS, P NOMEROTSKI, A NORMAND, A NOVAK, M OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONJIN, V ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBIN, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A SEKLIN, R SESSA, M SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SKAALI, TB SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STAVROPOULOS, G STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TCHIKILEV, O THEODOSIOU, GE THOME, Z TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VANELDIK, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YUSHCHENKO, O ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUMERLE, G AF ABREU, P ADAM, W ADYE, T AGASI, E AJINENKO, I ALEKSAN, R ALEKSEEV, GD ALLPORT, PP ALMEHED, S ALMEIDA, FML ALVSVAAG, SJ AMALDI, U ANDREAZZA, A ANTILOGUS, P APEL, WD APSIMON, RJ ARNOUD, Y ASMAN, B AUGUSTIN, JE AUGUSTINUS, A BAILLON, P BAMBADE, P BARAO, F BARATE, R BARBIELLINI, G BARDIN, DY BARKER, GJ BARONCELLI, A BARRING, O BARRIO, JA BARTL, W BATES, MJ BATTAGLIA, M BAUBILLER, M BAUDOT, J BECKS, KH BEGALLI, M BEILLIERE, P BELTRAN, P BENVENUTI, AC BERGGREN, M BERTRAND, D BIANCHI, F BIGI, M BILENSKY, MS BILLOIR, P BJARNE, J BLOCH, D BLOCKI, J BLYTH, S BOCCI, V BOGOLUBOV, PN BOLOGNESE, T BONESINI, M BONIVENTO, W BOOTH, PSL BORISOV, G BOSIO, C BOSTJANCIC, B BOSWORTH, S BOTNER, O BOUQUET, B BOURDARIOS, C BOWCOCK, TJV BOZZO, M BRAIBANT, S BRANCHINI, P BRAND, KD BRENNER, RA BRIAND, H BRICMAN, C BRILLAULT, L BROWN, RCA BRUCKMAN, P BRUNET, JM BUGGE, L BURAN, T BUSY, A BUYTAERT, JAMA CACCIA, M CALVI, M ROZAS, AJC CAMPION, R CAMPORESI, T CANALE, V CANKOCAK, K CAO, F CARENA, F CARRILHO, P CARROLL, L CASES, R CASO, C GIMENEZ, MVC CATTAI, A CAVALLO, FR CERRITO, L CHABAUD, V CHAN, A CHARPENTIER, P CHAUVEAU, J CHECCHIA, P CHELKOV, GA CHLIAPNIKOV, P CHOROWICZ, V CHRIN, JTM CINDRO, V COLLINS, P CONTRERAS, JL CONTRI, R CORTINA, E COSME, G COUCHOT, F CRAWLEY, HB CRENNELL, D CROSETTI, G MAESTRO, JC CZELLAR, S DAHLJENSEN, E DAHM, J DALMAGNE, B DAM, M DAMGAARD, G DAUBIE, E DAUM, A DAUNCEY, PD DAVENPORT, M DAVIES, J DASILVA, W DEFOIX, C DELPIERRE, P DEMARIA, N DEANGELIS, A DEBOECK, H DEBOER, W DEBRABANDERE, S DECLERCQ, C LASO, MDMD DELAVAISSIERE, C DELOTTO, B DEMIN, A DEPAULA, L DESTJEAN, C DIJKSTRA, H DICIACCIO, L DJAMA, F DOLBEAU, J DONSZELMANN, M DOROBA, K DRACOS, M DREES, J DRIS, M DUFOUR, Y DUPONT, F EDSALL, D EHRET, R EKELOF, T EKSPONG, G ELSING, M ENGEL, JP ERSHAIDAT, N SANTO, ME FASSOULIOTIS, D FEINDT, M FENYUK, A FERRER, A FILIPPAS, TA FIRESTONE, A FOETH, H FOKITIS, E FONTANELLI, F FORMENTI, F FOUSSET, JL FRANCON, S FRANEK, B FRENKIEL, P FRIES, DC FRODESEN, AG FRUHWIRTH, R FULDAQUENZER, F FURSTENAU, H FUSTER, J GAMBA, D GANDELMAN, M GARCIA, C GARCIA, J GASPAR, C GASPARINI, U GAVILLET, P GAZIS, EN GELE, D GERBER, JP GERDYUKOV, L GIACOMELLI, P GILLESPIE, D GOKIELI, R GOLOB, B GOLOVATYUK, VM CADENAS, JJGY GOPAL, G GORN, L GORSKI, M GRACCO, V GRARD, F GRAZINAI, E GROSDIDIER, G GUNNARSSON, P GUY, J HAEDINGER, U HAHN, F HAHN, M HAHN, S HAIDER, S HAJDUK, Z HAKANSSON, A HALLGREN, A HAMACHER, K WAO, W HARRIS, FJ HEDBERG, V HENRIQUES, R HERNADEZ, JJ HERNANDO, JA HERQUET, P HERR, H HESSING, TL HIGON, E HILKE, HJ HILL, TS HOLMGREN, SO HOLT, PJ HOLTHUIZEN, D HONORE, PF HOULDEN, M HRUBEC, J HUET, K HULTQVIST, K IOANNOU, P IVERSEN, PS JACKSON, JN JACOBSSON, R JALOCHA, P JARLSKOG, G JARRY, P JEANMARIE, B JOHANSSON, EK JONKER, M JONSSON, L JUILLOT, P KAISER, M KALMUS, G KAPUSTA, F KARLSSON, M KARVELAS, E KATSENEVAS, S KATSOUFIS, EC KERANEN, R KHOMENKO, BA KHOVANSKI, NN KING, B KJAER, NJ KLEIN, H KLOVNING, A KLUIT, P KOCHMEHRIN, A KOEHNE, JH KOENE, B KOKKINIAS, P KORATZINOS, M KORYTOV, AV KOSTIOUKHINE, V KOURKOUMELIS, C KOUZNETSOV, O KRAMER, PH KRAMMER, M KREUTER, C KROLIKOWSKI, J KRONKVIST, I KRUPINSKI, W KUCEWICZ, W KULKA, K KURVINEN, K LACASTA, C LAMBROPOULOS, C LAMSA, JW LANCERI, L LANGEFELD, P LAPIN, V LAST, I LAUGIER, JP LAUHAKANGAS, R LEDROIT, F LEITNER, R LEMOIGNE, Y LEMONNE, J LENZEN, G LEPELTIER, V LESIAK, T LEVY, JM LIEB, E LIKO, D LINDNER, R LIPNIACKA, A LIPPI, I LOERSTAD, B LOKAJICEK, M LOKEN, JG LOPEZFERNANDEZ, A AGUERA, MAL LOS, M LOUKAS, D LOZANO, JJ LUTZ, P LYONS, L MAEHLUM, G MAILLARD, J MAIO, A MALTERZOS, A MANDL, F MARCO, J MARECHAL, B MARGONI, M MARIN, JC MARIOTTI, C MARKOU, A MARON, T MARTI, S MARTINEZRIVERO, C MARTINEZVIDAL, F MATORRAS, F MATTEUZZI, C MATTHIAE, G MAZZUCATO, M MCCUBBIN, M MCKAY, R MCNULTY, R MEDBO, J MERONI, C MEYER, WT MICHELOTTO, M MIGLIORE, E MIKULEC, I MIRABITO, L MITAROFF, WA MITSELMAKHER, GV MJOERNMARK, U MOA, T MOELLER, R MOENIG, K MONGE, MR MORETTINI, P MUELLER, H MURRAY, WJ MURYN, B MYATT, G NARAGHI, F NAVARRIA, FL NEGRI, P NEMECEK, S NEUMANN, W NEUMEISTER, N NICOLAIDOU, R NIELSEN, BS NISS, P NOMEROTSKI, A NORMAND, A NOVAK, M OBRAZTSOV, V OLSHEVSKI, AG ORAVA, R OSTERBERG, K OURAOU, A PAGANINI, P PAGANONI, M PAIN, R PALKA, H PAPADOPOULOU, TD PAPE, L PARODI, F PASSERI, A PEGORARO, M PENNANEN, J PERALTA, L PERNEGGER, H PERNICKA, M PERROTTA, A PETRIDOU, C PETROLINI, A PHILLIPS, HT PIANA, G PIERRE, F PIMENTA, M PLASZCZYNSKI, S PODOBRIN, O POL, ME POLOK, G POROPAT, P POZDNIAKOV, V PREST, M PRIVITERA, P PULLIA, A RADOJICIC, D RAGAZZI, S RAHMANI, H RATOFF, PN READ, AL REALE, M REBECCHI, P REDAELLI, NG REGLER, M REID, D RENTON, PB RESVANIS, LK RICHARD, F RICHARDSON, J RIDKY, J RINAUDO, G RIPP, I ROMERO, A RONCAGLIOLO, I RONCHESE, P RONJIN, V ROOS, L ROSENBERG, EI ROSSO, E ROUDEAU, P ROVELLI, T RUCKSTUHL, W RUHLMANNKLEIDER, V RUIZ, A RYBIN, A SAARIKKO, H SACQUIN, Y SAJOT, G SALT, J SANCHEZ, J SANNINO, M SCHAEL, S SCHNEIDER, H SCHYNS, MAE SCIOLLA, G SCURI, F SEGAR, AM SEITZ, A SEKLIN, R SESSA, M SEUFERT, R SHELLARD, RC SICCAMA, I SIEGRIST, P SIMONETTI, S SIMONETTO, F SISAKIAN, AN SKAALI, TB SMADJA, G SMIRNOVA, O SMITH, GR SOSNOWSKI, R SOUZASANTOS, D SPASSOV, T SPIRITI, E SQUARCIA, S STAECK, H STANESCU, C STAPNES, S STAVITSKI, I STAVROPOULOS, G STEPANIAK, K STICHELBAUT, F STOCCHI, A STRAUSS, J STRAVER, J STRUB, R STUGU, B SZCZEKOWSKI, M SZEPTYCKA, M TABARELLI, T TCHIKILEV, O THEODOSIOU, GE THOME, Z TILQUIN, A TIMMERMANS, J TIMOFEEV, VG TKATCHEV, LG TODOROV, T TOET, DZ TOMARADZE, A TOME, B TORASSA, E TORTORA, L TRANSTROMER, G TREILLE, D TRISCHUK, W TRISTRAM, G TRONCON, C TSIROU, A TSYGANOV, EN TURLUER, ML TUUVA, T TYAPKIN, IA TYNDEL, M TZAMARIAS, S UEBERSCHAER, B UEBERSCHAER, S ULLALAND, O UVAROV, V VALENTI, G VALLAZZA, E FERRER, JAV VANDERVELDE, C VANAPELDOORN, GW VANDAM, P VANDERHEIJDEN, M VANDONINCK, WK VANELDIK, J VAZ, P VEGNI, G VENTURA, L VENUS, W VERBEURE, F VERLATO, M VERTOGRADOV, LS VILANOVA, D VINCENT, P VITALE, L VLASOV, E VODOPYANOV, AS VOLLMER, M VOUTILAINEN, M VRBA, V WAHLEN, H WALCK, C WALDNER, F WEHR, A WEIERSTALL, M WEILHAMMER, P WETHERELL, AM WICKENS, JH WIELERS, M WILKINSON, GR WILLIAMS, WSC WINTER, M WITEK, M WORMSER, G WOSCHNAGG, K YIP, K YUSHCHENKO, O ZAITSEV, A ZALEWSKA, A ZALEWSKI, P ZAVRTANIK, D ZEVGOLATAKOS, E ZIMIN, NI ZITO, M ZONTAR, D ZUBERI, R ZUMERLE, G TI CHARGED KAON PRODUCTION IN TAU-DECAYS AT LEP SO PHYSICS LETTERS B LA English DT Article AB Kaon production in one prong tau decays has been studied using data collected with the DELPHI detector at the LEP collider. Charged kaons were identified over a large momentum range by the DELPHI barrel Ring Imaging Cherenkov detector. The following branching ratios have been determined: BR(tau --> Knu(T)) = (0.85 +/- 0.18) %, BR(tau --> Knu(tau) greater-than-or-equal-to 0 neutrals) = (1.54 +/- 0.24) %, BR(tau --> Knu(tau) greater-than-or-equal-to 1 neutrals) = (0.69 +/- 0.25) %. The result for the exclusive branching ratio is consistent with the Standard Model prediction based on tau - mu - e universality. In addition, tau decay into K*- was studied in the channel K*- --> K- pi0. The result BR(tau --> K*-nu(tau)) x BR(K*- --> K- pi0) = (0.57 +/- 0.23)% was obtained. C1 UNIV LYON 1,IPNL,IN2P3,CNRS,F-69622 VILLEURBANNE,FRANCE. UNIV COMPLUTENSE,E-28040 MADRID,SPAIN. UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY. UNIV AIX MARSEILLE 2,CPP,IN2P3,CNRS,F-13288 MARSEILLE 09,FRANCE. INFN,I-20133 MILAN,ITALY. NIELS BOHR INST,DK-2100 COPENHAGEN 0,DENMARK. CHARLES UNIV,NC MFF,CS-18000 PRAGUE 8,CZECH REPUBLIC. NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS. NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE. UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY. UNIV OVIEDO,DPTO FIS,E-33006 OVIEDO,SPAIN. UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND. UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY. INFN,I-35131 PADUA,ITALY. PONTIFICIA UNIV CATOLICA,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL. RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. UNIV ROMA,DIPARTIMENTO FIS,I-00173 ROME,ITALY. CENS,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. IST REGINA ELENA,IST SUPER SANITA,I-00161 ROME,ITALY. UNIV CANTABRIA,CSIC,CEAFM,E-39006 SANTANDER,SPAIN. PROTVINO HIGH ENERGY PHYS INST,PROTVINO,RUSSIA. UNIV LJUBLJANA,J STEFAN INST,61000 LJUBLJANA,SLOVENIA. UNIV LJUBLJANA,DEPT PHYS,61000 LJUBLJANA,SLOVENIA. UNIV STOCKHOLM,S-11385 STOCKHOLM,SWEDEN. UNIV TURIN,DIPARTIMENTO FIS SPERIMENTALE,I-10125 TURIN,ITALY. INFN,I-10125 TURIN,ITALY. UNIV TRIESTE,DIPARTIMENTO FIS,I-34127 TRIESTE,ITALY. INFN,I-34127 TRIESTE,ITALY. UNIV UDINE,IST FIS,I-33100 UDINE,ITALY. UNIV FED RIO DE JANEIRO,BR-21945970 RIO JANEIRO,BRAZIL. UNIV UPPSALA,DEPT RADIAT SCI,S-75121 UPPSALA,SWEDEN. UNIV VALENCIA,IFIC,CSIC,E-46100 BURJASSOT,SPAIN. OSTERR AKAD WISSENSCH,INST HOCHENERGIEPHYS,A-1050 VIENNA,AUSTRIA. UNIV WARSAW,PL-00681 WARSAW,POLAND. INST NUCL STUDIES,PL-00681 WARSAW,POLAND. UNIV WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL 1,GERMANY. UNIV VALENCIA,DFAMN,E-46100 BURJASSOT,SPAIN. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM. ULB,IIHE,B-1050 BRUSSELS,BELGIUM. UNIV ETAT MONS,FAC SCI,B-7000 MONS,BELGIUM. UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE. UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY. UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY. INFN,I-40126 BOLOGNA,ITALY. COLL FRANCE,PHYS CORPUSCULAIRE LAB,IN2P3,CNRS,F-75231 PARIS 05,FRANCE. CERN,CH-1211 GENEVA 23,SWITZERLAND. ULB,CNR,IN2P3,CNRS,F-67037 STRASBOURG,FRANCE. NCSR,INST NUCL PHYS,GR-15310 ATHENS,GREECE. CAS,F2U,INST PHYS,DIV HIGH ENERGY PHYS,CS-18040 PRAGUE 8,CZECH REPUBLIC. UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY. INFN,I-16146 GENOA,ITALY. UNIV GRENOBLE 1,INST SCI NUCL,IN2P3,CNRS,F-38026 ST MARTIN DHERES,FRANCE. SEFT,HIGH ENERGY PHYS RES INST,SF-00014 HELSINKI,FINLAND. JOINT NUCL RES INST,MOSCOW 101000,RUSSIA. UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY. INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND. CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL. UNIV PARIS 11,IN2P3,ACCELERATEUR LINEAIRE LAB,CNRS,F-91405 ORSAY,FRANCE. UNIV LANCASTER,SCH PHY & MAT,LANCASTER LA1 4YB,ENGLAND. FCUL,IST,LIP,P-1000 LISBON,PORTUGAL. UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,ENGLAND. UNIV PARIS 06,LPNHE,IN2P3,CNRS,F-75252 PARIS 05,FRANCE. UNIV PARIS 07,F-75252 PARIS 05,FRANCE. LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN. INFN,I-00173 ROME,ITALY. RP ABREU, P (reprint author), FCUL,IST,LIP,AV ELIAS GARCIA 14-1,P-1000 LISBON,PORTUGAL. RI Hallgren, Allan/A-8963-2013; Nomerotski, Andrei/A-5169-2010; Ruiz, Alberto/E-4473-2011; branchini, paolo/A-4857-2011; Krammer, Manfred/A-6508-2010; Shellard, Ronald/G-4825-2012; Petrolini, Alessandro/H-3782-2011; Torassa, Ezio/I-1788-2012; Giacomelli, Paolo/B-8076-2009; Fruhwirth, Rudolf/H-2529-2012; Andreazza, Attilio/E-5642-2011; Verlato, Marco/J-4604-2012; Dracos, Marcos/K-2335-2012; Hernando Morata, Jose Angel/L-7642-2014; gandelman, miriam/N-3739-2014; Ragazzi, Stefano/D-2463-2009; Michelotto, Michele/A-9571-2013; Matorras, Francisco/I-4983-2015; Ferrer, Antonio/H-2942-2015; Rovelli, Tiziano/K-4432-2015; Smirnova, Oxana/A-4401-2013; Lozano-Bahilo, Julio/F-4881-2016; Olshevskiy, Alexander/I-1580-2016; Paganoni, Marco/A-4235-2016; Contreras Gonzalez, Jose Luis/K-7255-2014; Botner, Olga/A-9110-2013; Zalewski, Piotr/H-7335-2013; Marti-Garcia, Salvador/F-3085-2011; Vaz, Pedro/K-2464-2013; Monge, Maria Roberta/G-9127-2012; Nemecek, Stanislav/G-5931-2014; Ridky, Jan/H-6184-2014; Tome, Bernardo/J-4410-2013; Fernandez, Ester/K-9734-2014; Espirito Santo, Maria Catarina/L-2341-2014; Pimenta, Mario/M-1741-2013; Gomez Cadenas, Juan Jose/L-2003-2014; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Barrio, Juan/L-3227-2014; Zaitsev, Alexandre/B-8989-2017; Yip, Kin/D-6860-2013; OI Ruiz, Alberto/0000-0002-3639-0368; Krammer, Manfred/0000-0003-2257-7751; Shellard, Ronald/0000-0002-2983-1815; Petrolini, Alessandro/0000-0003-0222-7594; Andreazza, Attilio/0000-0001-5161-5759; Verlato, Marco/0000-0003-1967-7655; Dracos, Marcos/0000-0003-0514-193X; Hernando Morata, Jose Angel/0000-0002-8683-5142; Ragazzi, Stefano/0000-0001-8219-2074; Michelotto, Michele/0000-0001-6644-987X; Matorras, Francisco/0000-0003-4295-5668; Ferrer, Antonio/0000-0003-0532-711X; Rovelli, Tiziano/0000-0002-9746-4842; Smirnova, Oxana/0000-0003-2517-531X; Lozano-Bahilo, Julio/0000-0003-0613-140X; Olshevskiy, Alexander/0000-0002-8902-1793; Paganoni, Marco/0000-0003-2461-275X; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394; Vaz, Pedro/0000-0002-7186-2359; Monge, Maria Roberta/0000-0003-1633-3195; Ridky, Jan/0000-0001-6697-1393; Tome, Bernardo/0000-0002-7564-8392; Espirito Santo, Maria Catarina/0000-0003-1286-7288; Pimenta, Mario/0000-0002-2590-0908; Gomez Cadenas, Juan Jose/0000-0002-8224-7714; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Barrio, Juan/0000-0002-0965-0259; Zaitsev, Alexandre/0000-0002-4961-8368; Matteuzzi, Clara/0000-0002-4047-4521; DE MIN, ALBERTO/0000-0002-8130-9389; Demaria, Natale/0000-0003-0743-9465; Bonesini, Maurizio/0000-0001-5119-1896; Sannino, Mario/0000-0001-7700-8383; Maio, Amelia/0000-0001-9099-0009; De Angelis, Alessandro/0000-0002-3288-2517; Yip, Kin/0000-0002-8576-4311; PREST, MICHELA/0000-0003-3161-4454; De Lotto, Barbara/0000-0003-3624-4480; Tabarelli de Fatis, Tommaso/0000-0001-6262-4685; Lacasta, Carlos/0000-0002-2623-6252; Torassa, Ezio/0000-0003-2321-0599 NR 12 TC 14 Z9 14 U1 0 U2 4 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 AUG 18 PY 1994 VL 334 IS 3-4 BP 435 EP 449 DI 10.1016/0370-2693(94)90711-0 PG 15 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PD741 UT WOS:A1994PD74100029 ER PT J AU FRANK, P HEDMAN, B CARLSON, RMK HODGSON, KO AF FRANK, P HEDMAN, B CARLSON, RMK HODGSON, KO TI INTERACTION OF VANADIUM AND SULFATE IN BLOOD-CELLS FROM THE TUNICATE ASCIDIA-CERATODES - OBSERVATIONS USING X-RAY-ABSORPTION EDGE STRUCTURE AND EPR SPECTROSCOPIES SO INORGANIC CHEMISTRY LA English DT Article ID RESONANCE-SPECTRUM; INTRACELLULAR PH; SULFUR-K; VANADOCYTES; ACIDITY; ION; LOCALIZATION; CHEMISTRY; MENTULA; ASPERSA AB Sulfur K-edge X-ray absorption spectroscopy (S-K XAS) and EPR spectroscopy have been used to investigate the inorganic solution chemistry of vanadium, sulfate, and methanesulfonate, with application to blood cells from the tunicate Ascidia ceratodes. Three independent whole blood cell preparations (S85, S86, W87) collected over a period of 18 months were examined. Average blood cell vanadium concentrations were determined to be 0.099, 0.079, and 0.062 M, respectively. All three collections gave sulfur XAS spectra consistent with significant intracellular concentrations of low-valent sulfur, analkanesulfonic acid, and sulfate. In model studies, the line width of the sulfate K-edge XAS spectrum was found to titrate with both pH and [V(III)]. Application of this finding to A. ceratodes blood cell sulfur XAS spectra provided evidence for direct interactions between endogenous dissolved sulfate and V(III) in two of the three collections. All three collections yielded sulfate XAS edge spectra consistent with low pH. Curve-fitting analysis of the S-K edge XAS spectra for the three whole blood cell collections yielded the ratios of intracellular sulfate:alkane sulfonate:low-valent sulfur to be as follows: S85, 1.0:0.9:0.36; S86, 1.0:0.5:1.5; W87, 1.0:0.44:0.24. Comparisons with models indicated that the low-valent blood cell sulfur included various disulfide-like compounds unlike cystine. This all implies a surprisingly rich and variable sulfur biochemistry in these marine organisms. EPR spectroscopy of whole blood cells from one animal from the W87 collection revealed an endogenous VO2+-sulfate interaction. Thus both V(III) and VO2+ can sense an intracellular pool of sulfate, implying the biological colocation of these two metal ions. The variations in blood chemistry observed over time as described herein caution against definitive application of single point experiments. C1 STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305. STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,SLAC,STANFORD,CA 94309. CHEVRON PETR TECHNOL CO,RICHMOND,CA 94802. NR 47 TC 48 Z9 48 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD AUG 17 PY 1994 VL 33 IS 17 BP 3794 EP 3803 DI 10.1021/ic00095a024 PG 10 WC Chemistry, Inorganic & Nuclear SC Chemistry GA PC834 UT WOS:A1994PC83400024 ER PT J AU YANG, YS DATTA, A HAINFELD, JF FURUYA, FR WALL, JS FREY, FA AF YANG, YS DATTA, A HAINFELD, JF FURUYA, FR WALL, JS FREY, FA TI MAPPING THE LIPOYL GROUPS OF THE PYRUVATE-DEHYDROGENASE COMPLEX BY USE OF GOLD CLUSTER LABELS AND SCANNING-TRANSMISSION ELECTRON-MICROSCOPY SO BIOCHEMISTRY LA English DT Article ID MULTI-ENZYME COMPLEX; ESCHERICHIA-COLI; MULTIENZYME COMPLEX; DIHYDROLIPOYL TRANSACETYLASE; ACID; COMPONENT; MOBILITY; MOIETIES; SYSTEM; CHAIN AB This paper describes the organization of lipoyl moieties within the pyruvate dehydrogenase (PDH) complex from Escherichia coli as studied in the scanning transmission electron microscope (STEM). The PDH complex is a multienzyme complex consisting of E(1), pyruvate dehydrogenase, E(2), dihydrolipoyl transacetylase, and E(3), dihydrolipoyl dehydrogenase. The core of the complex is the cubic 24-subunit E(2) component, which contains the lipoyl moieties bonded to lipoyl-bearing domains. E(1) and E(3) are associated along the edges (E(1)) and on the faces (E(3)) Of the core. The lipoyl moieties were reduced with NADH and alkylated with a p-maleimidobenzoyl undecagold cluster complex. The gold labels were found to be bound very nearly specifically by dihydrolipoyl transacetylase (E(2)). Undecagold clusters were imaged directly by the STEM and also digitally mapped by radial mass analysis. The mass of the E(2)E(3) subcomplex is about half that of the PDH complex. The PDH complex and GC-PDH are both about 420 Angstrom in diameter, as determined by radial mass analysis, and the E(2)E(3) subcomplex and GC-E(2)E(3) are 320 and 350 Angstrom, respectively. The outer boundary of the E(2)E(3) subcomplex was clearly shown in STEM micrographs by the undecagold labels in GC-E(2)E(3). Data obtained from radial mass analysis of GC-E(2)E(3) and the unlabeled E(2)E(3) subcomplex also showed that the size of the subcomplex is extended by the lipoyl-bearing domains surrounding the central E(2) core. The capabilities of lipoyl moieties to undergo translocation over long distances through structural mobility in the lipoyl-bearing domains was confirmed by the observation that many of the lipoyl groups in E(2)E(3) subcomplexes relax outward into space vacated by the removal of E(1) during the preparation of the subcomplex from PDH complex. Radial mass analysis of the PDH complex and GC-PDH indicates that lipoyl groups are distributed over a large region of the PDH complex, extending from the central core to 170-180 Angstrom from the center of the complex, with the highest density at about 75 Angstrom from the particle centers, near the interface between E(2) and the associated components E(1) and E(3). C1 UNIV WISCONSIN,GRAD SCH,INST ENZYME RES,MADISON,WI 53705. UNIV WISCONSIN,COLL AGR & LIFE SCI,DEPT BIOCHEM,MADISON,WI 53705. BROOKHAVEN NATL LAB,UPTON,NY 11973. FU NCRR NIH HHS [P41-RR01777]; NIDDK NIH HHS [DK 28607] NR 43 TC 13 Z9 13 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 16 PY 1994 VL 33 IS 32 BP 9428 EP 9437 DI 10.1021/bi00198a008 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PC545 UT WOS:A1994PC54500008 PM 7520749 ER PT J AU THORVALDSEN, JL SEWELL, AK TANNER, AM PELTIER, JM PICKERING, IJ GEORGE, GN WINGE, DR AF THORVALDSEN, JL SEWELL, AK TANNER, AM PELTIER, JM PICKERING, IJ GEORGE, GN WINGE, DR TI MIXED CU+ AND ZN2+ COORDINATION IN THE DNA-BINDING DOMAIN OF THE AMT1 TRANSCRIPTION FACTOR FROM CANDIDA-GLABRATA SO BIOCHEMISTRY LA English DT Article ID METALLOTHIONEIN GENE-TRANSCRIPTION; IONIZATION MASS-SPECTROMETRY; YEAST METALLOTHIONEIN; ZINC-FINGER; SACCHAROMYCES-CEREVISIAE; MOLECULAR-STRUCTURES; CRYSTAL-STRUCTURE; METAL-BINDING; PROTEIN; ACE1 AB AMT1 is the transcription factor required for Cu-induced expression of metallothionein genes in the yeast Candida glabrata. The copper-binding, DNA-binding domain of AMT 1 has been purified after expression of an AMT1 synthetic gene in bacteria and was confirmed as active in a gel shift assay. The Cu-activated AMT1 was shown to contain a Cu+-thiolate tetracopper center and a single Zn2+ site. AMT1 is purified as a Cu-Zn protein from bacterial cultures grown in the presence of CuSO4. Chemical analysis suggested that 4.2 +/- 0.2 and 1.2 +/- 0.2 molar equiv copper and zinc ions bound, respectively. Electrospray mass spectrometry was used to verify that a uniform species was present with 4 Cu+ ions and 1 Zn2+ ion bound per AMT1 molecule. Cu+ binding to form a tetracopper center occurs cooperatively as shown by electrospray MS of apoAMT 1 samples reconstituted with increasing equivalency of Cu+. Copper-thiolate coordination was indicated by Cu-S charge-transfer transitions in the ultraviolet, luminescence typical of Cu-thiolate clusters and EXAFS. Analysis of the EXAFS of CuZnAMT1 revealed predominantly trigonal Cu+ coordination and the presence of a polycopper cluster by virtue of a short Cu-Cu distance of 2.7 Angstrom. Zn K-edge EXAFS of Cu(4)Zn(1)AMT1 and electronic spectroscopy of AMT 1 with Co2+ substituted for the single Zn2+ ion are consistent with tetrahedral Zn2+ coordination with thiolate ligands. The Cu-activated AMT1 exhibited a conformation distinct from that of metal-free AMT1 as shown by circular dichroism. DNA binding by AMT1 was dependent on the tetracopper center but was independent of occupancy of the Zn2+ site. This is the first report of a single, uniform tetracopper center in a metal-activated transcription factor. C1 UNIV UTAH,HLTH SCI CTR,DEPT MED,SALT LAKE CITY,UT 84132. UNIV UTAH,HLTH SCI CTR,DEPT BIOCHEM,SALT LAKE CITY,UT 84132. UNIV UTAH,HLTH SCI CTR,DEPT MED CHEM,SALT LAKE CITY,UT 84132. STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309. RI George, Graham/E-3290-2013; Pickering, Ingrid/A-4547-2013; OI Pickering, Ingrid/0000-0002-0936-2994 FU NCI NIH HHS [5P30 CA42401, 5P30-CA 42014]; NIEHS NIH HHS [ES 03817] NR 47 TC 45 Z9 47 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 16 PY 1994 VL 33 IS 32 BP 9566 EP 9577 DI 10.1021/bi00198a024 PG 12 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PC545 UT WOS:A1994PC54500024 PM 8068632 ER PT J AU MUKERJI, I ANDREWS, JC DEROSE, VJ LATIMER, MJ YACHANDRA, VK SAUER, K KLEIN, MP AF MUKERJI, I ANDREWS, JC DEROSE, VJ LATIMER, MJ YACHANDRA, VK SAUER, K KLEIN, MP TI ORIENTATION OF THE OXYGEN-EVOLVING MANGANESE COMPLEX IN A PHOTOSYSTEM-II MEMBRANE PREPARATION - AN X-RAY-ABSORPTION SPECTROSCOPY STUDY SO BIOCHEMISTRY LA English DT Article ID ELECTRON-PARAMAGNETIC RESONANCE; PHOTOSYNTHETIC WATER OXIDATION; STRUCTURAL CHARACTERIZATION; SPINACH-CHLOROPLASTS; O2-EVOLVING COMPLEX; FINE-STRUCTURE; STATES; CLUSTER; EXAFS; EPR AB X-ray absorption spectroscopy has been performed on oriented photosystem II membrane particles isolated from spinach. Structural features of the tetranuclear Mn cluster and the orientation of the cluster with respect to the lipid bilayer were determined in both the S-1 and S-2 states of the Kok cycle. Variation of the sample orientation with respect to the X-ray e-vector yields highly dichroic K-edge and extended X-ray absorption fine structure spectra (EXAFS), indicative of an asymmetric tetranuclear cluster. Mn-Mn vectors at 2.72 and 3.38 Angstrom can be resolved from these measurements using quantitative analysis. The 2.72-Angstrom vector, consisting of at least two component vectors, is oriented at an average angle of 60 degrees +/- 7 degrees to the membrane normal, with an average of 1.1 +/- 0.1 interactions per Mn atom. The 3.38-Angstrom vector, most probably an average of two vectors, makes an angle of 43 degrees +/- 10 degrees with respect to the membrane normal, with an average of 0.45 +/- 0.07 backscatterer per Mn atom. Upon advance to the S-2 state, the orientation of these vectors and the average numbers of backscatterers are approximately invariant. Analysis of more subtle features of the EXAFS reveals changes accompanying this S-state advance that are consistent with the oxidation of Mn during this transition. However, the dominant structural features of the oxygen-evolving complex remain constant in the S-1 and S-2 states. The structure of the Mn complex and the orientation of the complex in the membrane within the context of dichroism of the X-ray absorption data are discussed. C1 UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DIV STRUCT BIOL, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, DEPT CHEM, BERKELEY, CA 94720 USA. NR 50 TC 60 Z9 60 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0006-2960 J9 BIOCHEMISTRY-US JI Biochemistry PD AUG 16 PY 1994 VL 33 IS 32 BP 9712 EP 9721 DI 10.1021/bi00198a042 PG 10 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PC545 UT WOS:A1994PC54500042 PM 8068650 ER PT J AU CROSS, FT AF CROSS, FT TI RESIDENTIAL RADON RISKS FROM THE PERSPECTIVE OF EXPERIMENTAL ANIMAL STUDIES SO AMERICAN JOURNAL OF EPIDEMIOLOGY LA English DT Editorial Material ID CANCER MORTALITY 1950-80; LUNG-CANCER; DAUGHTER EXPOSURE; URANIUM-MINE; COHORT; WORKERS; RATS RP CROSS, FT (reprint author), PACIFIC NW LAB, POB 999,K4-13, RICHLAND, WA 99352 USA. NR 34 TC 23 Z9 25 U1 0 U2 0 PU JOHNS HOPKINS UNIV SCHOOL HYGIENE PUB HEALTH PI BALTIMORE PA 111 MARKET PLACE, STE 840, BALTIMORE, MD 21202-6709 SN 0002-9262 J9 AM J EPIDEMIOL JI Am. J. Epidemiol. PD AUG 15 PY 1994 VL 140 IS 4 BP 333 EP 339 PG 7 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA PC269 UT WOS:A1994PC26900004 PM 8059768 ER PT J AU COESTER, F RISKA, DO AF COESTER, F RISKA, DO TI ELECTROMAGNETIC CURRENTS AND THE BLANKENBECLER-SUGAR EQUATION SO ANNALS OF PHYSICS LA English DT Article ID NUCLEON-NUCLEON-INTERACTION; ELECTRON-DEUTERON SCATTERING; MESON-EXCHANGE CURRENTS; CHARGE; OPERATOR AB The effective electromagnetic current density for a two-nucleon system that is described by the Blankenbecler-Sugar equation is derived. In addition to the single nucleon currents there are exchange currents of two different origins. The first is the exchange current that is required to compensate for the violation of the continuity equation in the impulse approximation. The second is an exchange current, which arises in the quasipotential reduction from the Bethe-Salpeter equation and which represents effects of suppressed degrees of freedom. Explicit general expressions are given for both of these exchange currents. The results are applicable to both elastic and inelastic processes. (C) 1994 Academic Press, Inc. C1 UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI 17,FINLAND. RP COESTER, F (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 26 TC 26 Z9 26 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0003-4916 J9 ANN PHYS-NEW YORK JI Ann. Phys. PD AUG 15 PY 1994 VL 234 IS 1 BP 141 EP 161 DI 10.1006/aphy.1994.1076 PG 21 WC Physics, Multidisciplinary SC Physics GA PA134 UT WOS:A1994PA13400004 ER PT J AU FRIEDMAN, DJ HORNER, GS KURTZ, SR BERTNESS, KA OLSON, JM MORELAND, J AF FRIEDMAN, DJ HORNER, GS KURTZ, SR BERTNESS, KA OLSON, JM MORELAND, J TI EFFECT OF FACETING ON THE BAND-GAP OF ORDERED GAINP SO APPLIED PHYSICS LETTERS LA English DT Article ID VAPOR-PHASE EPITAXY; ALLOY SEMICONDUCTORS; GROWTH TEMPERATURE; GA0.5IN0.5P; ALGAINP; ENERGY; DEPOSITION; DEPENDENCE AB It has been shown that under certain growth conditions the pseudobinary semiconductor alloy GaInP shows cation site ordering into the Cu-Pt structure, and that this ordering results in a lowering of the band gap E(g) from that of the disordered alloy. The E(g) lowering is known to depend on growth conditions, including the orientation of the substrate. We study the dependence of E(g) on epilayer thickness for GaInP grown by metal-organic vapor-phase epitaxy. For epilayers grown on singular (100) substrates under growth conditions conventionally used to produce ordered material, E(g) decreases dramatically with increasing epilayer thickness: E(g) for a 10-mum-thick epilayer is approximately 40 meV lower than for a 1-mum-thick epilayer. This dependence of E(g) on thickness can be understood in terms of the recently observed faceting of the GaInP growth surface. C1 NATL INST STAND & TECHNOL,BOULDER,CO 80303. RP FRIEDMAN, DJ (reprint author), NATL RENEWABLE ENERGY LAB,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 22 TC 26 Z9 26 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 15 PY 1994 VL 65 IS 7 BP 878 EP 880 DI 10.1063/1.112188 PG 3 WC Physics, Applied SC Physics GA PC428 UT WOS:A1994PC42800029 ER PT J AU GOLD, LS SLONE, TH MANLEY, NB AMES, BN AF GOLD, LS SLONE, TH MANLEY, NB AMES, BN TI HETEROCYCLIC AMINES FORMED BY COOKING FOOD - COMPARISON OF BIOASSAY RESULTS WITH OTHER CHEMICALS IN THE CARCINOGENIC POTENCY DATABASE SO CANCER LETTERS LA English DT Article DE CARCINOGENIC POTENCY; DIETARY HETEROCYCLIC AMINE; CARCINOGENIC HAZARDS, RANKING OF; SPECIES COMPARISON ID ANIMAL BIOASSAYS; QUANTITATIVE FACTORS; TARGET ORGANS; TOXICOLOGY AB Results in the Carcinogenic Potency Database (CPDB) on 11 mutagenic heterocyclic amines (HA) tested for carcinogenicity in rats, mice and cynomolgus monkeys are compared to results for other chemicals. An analysis of strength of evidence of carcinogenicity for HA vs. other mutagenic carcinogens and vs. all rodent carcinogens, indicates strong carcinogenicity of HA in terms of positivity rates and multiplicity of target sites. The liver is the most frequent target site in each species. Despite several target sites in each species, concordance in target sites between rats and mice is restricted to the liver for each HA except one. In cynomolgus monkeys, liver tumors have been induced rapidly by 2-amino-3-methylimidazo[4,5-f]quinoline (IQ). Human exposures to HA in cooked animal foods are small, in the low ppb range. A comparison of possible carcinogenic hazards from a variety of exposures to rodent carcinogens in the American diet is presented, using an index (Human Exposure/Rodent Potency, HERP) that relates human exposure to carcinogenic potency in rodents. Results indicate that there is a large background of exposures to naturally occurring rodent carcinogens in typical portions of common foods, and that possible hazards from HA rank below those of most natural pesticides and products of cooking or food preparation; synthetic pesticide residues also rank low. C1 UNIV CALIF BERKELEY,DIV BIOCHEM & MOLEC BIOL,BERKELEY,CA 94720. RP GOLD, LS (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV LIFE SCI,BERKELEY,CA 94720, USA. FU NCEH CDC HHS [NIEHS ESO1896]; NCI NIH HHS [NCI CA39910] NR 27 TC 22 Z9 22 U1 0 U2 2 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0304-3835 J9 CANCER LETT JI Cancer Lett. PD AUG 15 PY 1994 VL 83 IS 1-2 BP 21 EP 29 PG 9 WC Oncology SC Oncology GA PD151 UT WOS:A1994PD15100005 PM 8062218 ER PT J AU TANNER, MM TIRKKONEN, M KALLIONIEMI, A COLLINS, C STOKKE, T KARHU, R KOWBEL, D SHADRAVAN, F HINTZ, M KUO, WL WALDMAN, FM ISOLA, JJ GRAY, JW KALLIONIEMI, OP AF TANNER, MM TIRKKONEN, M KALLIONIEMI, A COLLINS, C STOKKE, T KARHU, R KOWBEL, D SHADRAVAN, F HINTZ, M KUO, WL WALDMAN, FM ISOLA, JJ GRAY, JW KALLIONIEMI, OP TI INCREASED COPY NUMBER AT 20Q13 IN BREAST-CANCER - DEFINING THE CRITICAL REGION AND EXCLUSION OF CANDIDATE GENES SO CANCER RESEARCH LA English DT Note ID AMPLIFICATION AB Studies by comparative genomic hybridization have indicated that a major new locus for DNA amplification in breast cancer is 20q13 and suggested that this genetic event is associated with aggressive clinical behavior. We used interphase fluorescence in situ hybridization with anonymous cosmid probes and gene-specific P1 clones to determine the minimal common region of increased copy number and to study involvement of known genes at 20q13. Based on high-level copy number increases (3 to 10-fold) found with one or more probes in 5 of 14 (35%) breast cancer cell lines and in 3 of 36 (8%) primary tumors, the critical region was narrowed to similar to 1.5 megabases at 20q13.2 defined by fractional length pter values 0.81-0.84. Previously known genes were excluded as candidates, implying that this chromosomal region harbors a novel oncogene that contributes to the malignant progression of breast cancer. C1 TAMPERE UNIV HOSP,DEPT LAB MED,CANC GENET LAB,SF-33521 TAMPERE,FINLAND. UNIV TAMPERE,DEPT BIOMED SCI,SF-33101 TAMPERE,FINLAND. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF SAN FRANCISCO,DEPT LAB MED,DIV MOLEC CYTOMETRY,SAN FRANCISCO,CA 94143. RI Kallioniemi, Olli/H-5111-2011; Kallioniemi, Olli/H-4738-2012 OI Kallioniemi, Olli/0000-0002-3231-0332; Kallioniemi, Olli/0000-0002-3231-0332 FU NCI NIH HHS [CA44768, CA528207] NR 14 TC 156 Z9 158 U1 1 U2 5 PU AMER ASSOC CANCER RESEARCH PI PHILADELPHIA PA PUBLIC LEDGER BLDG, SUITE 816, 150 S. INDEPENDENCE MALL W., PHILADELPHIA, PA 19106 SN 0008-5472 J9 CANCER RES JI Cancer Res. PD AUG 15 PY 1994 VL 54 IS 16 BP 4257 EP 4260 PG 4 WC Oncology SC Oncology GA PB502 UT WOS:A1994PB50200002 PM 8044767 ER PT J AU MARTINSGREEN, M BOUDREAU, N BISSELL, MJ AF MARTINSGREEN, M BOUDREAU, N BISSELL, MJ TI INFLAMMATION IS RESPONSIBLE FOR THE DEVELOPMENT OF WOUND-INDUCED TUMORS IN CHICKENS INFECTED WITH ROUS-SARCOMA VIRUS SO CANCER RESEARCH LA English DT Article ID GROWTH-FACTOR-BETA; TRANSGENIC MICE; TUMORIGENESIS; TISSUES; CANCER; SKIN; RATS; GENE AB When newly hatched chicks are given injections of Rous sarcoma virus, a tumor develops at the site of injection. In spite of the presence of the virus in the blood, no other tumors are found distant from the site of inoculation during the life span of the animal (4-6 weeks). However, if a wound is made away from the primary tumor, a tumor develops at the site of wounding. Work in our laboratory showed previously that these wound tumors do not develop as a result of metastasis, therefore, factors released upon wounding must contribute to the development of the wound tumors. In particular, we showed that transforming growth factor (TGF) beta, a growth factor implicated in wound healing, can replace wounding in tumor development. However, we also showed that epidermal growth factor and TGF-alpha, growth factors that also have roles in wound healing, do not induce tumors. To identify the critical event(s) and to determine the mechanism involved in wound tumor development, we have continued these studies. Here we show that: (a) wound tumor development correlates with the presence of circulating virus and inflammation; (b) the virus is present in serum and in heterophils of the peripheral blood; (c) cell division at the site of wounding precedes the expression of viral proteins; (d) in addition to TGF-beta, acidic and basic fibroblast growth factors can also replace wounding in tumor development; (e) these three factors (TGF-beta, acidic fibroblast growth factor, basic fibroblast growth factor) which promote tumors also induce inflammation, whereas epidermal growth factor and TGF-alpha do not; and (f) during the inflammatory response, blood vessel leakage occurs as tested by the release of fibrinogen into the tissues. To test the possibility that inflammation is the key element in the development of these wound tumors, we used beta-methylprednisolone, an antiinflammatory drug that inhibits inflammation (including blood vessel leakage), to determine if wound tumor development could be prevented. We found that when inflammation was inhibited, tumors were also inhibited; when inflammation could not be stopped, tumors developed as before. These results indicate that the effect of wounding on the development of wound tumors in Rous sarcoma virus-infected chicks is accomplished through the cytokines released by the inflammatory cells at the site of wounding. These inflammatory mediators play a critical role in providing the conducive environment for oncogene integration and activation, and subsequent development of tumors. Our results also suggest that in humans and other mammals, the tumors that develop at the sites of chronic irritation may be the result of the persistent action of inflammatory cytokines on cellular genes that are important in the maintenance of homeostasis. Overexpression or underexpression of these genes could lead to deregulation of cell function culminating in transformation. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,CELL & MOLEC BIOL LAB,BERKELEY,CA 94720. RP MARTINSGREEN, M (reprint author), UNIV CALIF RIVERSIDE,DEPT BIOL,RIVERSIDE,CA 92521, USA. FU NIGMS NIH HHS [5R29GM48436-03] NR 36 TC 85 Z9 87 U1 1 U2 4 PU AMER ASSOC CANCER RESEARCH PI PHILADELPHIA PA PUBLIC LEDGER BLDG, SUITE 816, 150 S. INDEPENDENCE MALL W., PHILADELPHIA, PA 19106 SN 0008-5472 J9 CANCER RES JI Cancer Res. PD AUG 15 PY 1994 VL 54 IS 16 BP 4334 EP 4341 PG 8 WC Oncology SC Oncology GA PB502 UT WOS:A1994PB50200018 PM 7519120 ER PT J AU MCCOMAS, DJ GOSLING, JT HAMMOND, CM MOLDWIN, MB PHILLIPS, JL FORSYTH, RJ AF MCCOMAS, DJ GOSLING, JT HAMMOND, CM MOLDWIN, MB PHILLIPS, JL FORSYTH, RJ TI MAGNETIC RECONNECTION AHEAD OF A CORONAL MASS EJECTION SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID HEAT-FLUX DROPOUTS; SOLAR-WIND; ELECTRON EVENTS; CLOUDS AB On 29 November 1990 the Ulysses spacecraft passed through a series of interplanetary structures which suggest that reconnection had occurred on open field lines ahead of a coronal mass ejection (CME), changing the magnetic topology of the upstream region. We observe in sequence 1) a heat flux dropout, 2) a region of counterstreaming halo electrons which does not appear to be a CME, and 3) a region of counterstreaming halo electrons which is a CME. We suggest an interpretation in which upstream of the CME Ulysses passed first through a region magnetically disconnected from the Sun and then through a region magnetically connected back to the solar corona at both ends, both of which were created by reconnection of open field lines ahead of the CME. Such reconnection provides a method for producing a heat flux dropout/counterstreaming suprathermal electron pair of signatures in interplanetary space that has not been previously described. C1 UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,BLACKETT LAB,LONDON SW7 2BZ,ENGLAND. RP MCCOMAS, DJ (reprint author), LOS ALAMOS NATL LAB,SPACE & ATMOSPHER SCI GRP,LOS ALAMOS,NM 87544, USA. RI Moldwin, Mark/F-8785-2011 OI Moldwin, Mark/0000-0003-0954-1770 NR 18 TC 30 Z9 31 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 15 PY 1994 VL 21 IS 17 BP 1751 EP 1754 DI 10.1029/94GL01077 PG 4 WC Geosciences, Multidisciplinary SC Geology GA PC817 UT WOS:A1994PC81700002 ER PT J AU PERSSON, MAL OPGENOORTH, HJ PULKKINEN, TI ERIKSSON, AI DOVNER, PO REEVES, GD BELIAN, RD ANDRE, M BLOMBERG, LG ERLANDSON, RE BOEHM, MH AIKIO, AT HAGGSTROM, I AF PERSSON, MAL OPGENOORTH, HJ PULKKINEN, TI ERIKSSON, AI DOVNER, PO REEVES, GD BELIAN, RD ANDRE, M BLOMBERG, LG ERLANDSON, RE BOEHM, MH AIKIO, AT HAGGSTROM, I TI NEAR-EARTH SUBSTORM ONSET - A COORDINATED STUDY SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article AB We present simultaneous satellite and ground-based measurements of a substorm. Throughout the initial substorm expansion, southward drifting arcs are observed poleward of the expanding substorm aurora, indicating two independent systems of particle precipitation. Freja passes the brightening onset arc in the topside ionosphere near the moment of the substorm onset, observing an Alfven wave, field aligned current and oxygen ion outflow. The substorm onset occurs at low magnetospheric L-shells, near the poleward edge of the region of trapped particles. The location and time for the substorm injection are confirmed by geostationary spacecraft together with magnetometers, all-sky cameras and radar on the ground. We believe that the substorm onset may be triggered by modification of the oxygen content of the inner magnetosphere during the growth-phase caused by ionospheric ion outflow. C1 FINNISH METEOROL INST,SF-00101 HELSINKI,FINLAND. SWEDISH INST SPACE PHYS,UMEA DIV,S-90187 UMEA,SWEDEN. JOHNS HOPKINS UNIV,APPL PHYS LAB,LAUREL,MD 20723. MAX PLANCK INST EXTRATERR PHYS,W-8046 GARCHING,GERMANY. UNIV OULU,DEPT PHYS,SF-90570 OULU,FINLAND. SWEDISH INST SPACE PHYS,S-98128 KIRUNA,SWEDEN. LOS ALAMOS NATL LAB,DIV SPACE SCI & TECHNOL,LOS ALAMOS,NM 87545. ROYAL INST TECHNOL,ALFVEN LAB,S-10044 STOCKHOLM 70,SWEDEN. RP PERSSON, MAL (reprint author), SWEDISH INST SPACE PHYS,UPPSALA DIV,S-75591 UPPSALA,SWEDEN. RI Eriksson, Anders/C-2887-2009; Reeves, Geoffrey/E-8101-2011; Pulkkinen, Tuija/D-8403-2012; OI Reeves, Geoffrey/0000-0002-7985-8098; Pulkkinen, Tuija/0000-0002-6317-381X; Haggstrom, Ingemar/0000-0003-1070-6915 NR 15 TC 17 Z9 17 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 15 PY 1994 VL 21 IS 17 BP 1875 EP 1878 DI 10.1029/94GL01426 PG 4 WC Geosciences, Multidisciplinary SC Geology GA PC817 UT WOS:A1994PC81700034 ER PT J AU KING, PE OCHS, TL HARTMAN, AD AF KING, PE OCHS, TL HARTMAN, AD TI CHAOTIC RESPONSES IN ELECTRIC-ARC FURNACES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID TIME-SERIES; DYNAMICS; BEHAVIOR; PLASMAS AB This article reports the findings of ongoing research into the nature and extent of electric fluctuations occurring-in electric arc furnaces (EAFs). These fluctuations are indicators of the state of the furnace system and may serve as precursors for use in predictive control of the system. Current and voltage wave forms taken from a small-scale, 200 lb capacity alternating current EAF are used to characterize the motion of the arc column. Wave forms were analyzed using nonlinear dynamics and digital signal processing techniques. Analysis indicates that the observed system behavior is suggestive of chaotic dynamics, with phenomena occurring on several time scales. RP KING, PE (reprint author), US BUR MINES,ALBANY RES CTR,ALBANY,OR 97321, USA. NR 23 TC 19 Z9 23 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1994 VL 76 IS 4 BP 2059 EP 2065 DI 10.1063/1.357639 PG 7 WC Physics, Applied SC Physics GA PC021 UT WOS:A1994PC02100008 ER PT J AU MICHALSKE, TA SMITH, WL HOUSTON, JE AF MICHALSKE, TA SMITH, WL HOUSTON, JE TI ROLE OF STRUCTURAL RELAXATIONS IN THE FRACTURE OF VITREOUS SILICA SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID FATIGUE; GLASS; STRENGTH; FIBERS AB The double cleavage drilled compression fracture mechanics specimen was used to obtain crack velocity data for vitreous silica in vacuum conditions at temperatures of 100 and 300 K. We observed stable crack propagation over a velocity range between 10(-9) and 10(-2) m/s. The measured fracture rate dependence with applied stress was modeled using a global energy balance approach that incorporated energy losses due to the anelastic response of the material in the stress field of the propagating crack. Measured mechanical loss data for vitreous silica were incorporated into an anelastic fracture model to produce qualitative agreement with the measured fracture behavior. These results indicate that the anelastic response of silicate glasses can contribute significantly to the measured fracture energy. This interpretation of silicate glass fracture suggests a new approach to design glass compositions for improved mechanical performance and provides a more complete picture of the atomic scale processes that control the macroscopic fracture energy of amorphous materials. RP MICHALSKE, TA (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 27 TC 6 Z9 6 U1 2 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1994 VL 76 IS 4 BP 2109 EP 2114 DI 10.1063/1.357622 PG 6 WC Physics, Applied SC Physics GA PC021 UT WOS:A1994PC02100016 ER PT J AU SLAUGHTER, JM SCHULZE, DW HILLS, CR MIRONE, A STALIO, R WATTS, RN TARRIO, C LUCATORTO, TB KRUMREY, M MUELLER, P FALCO, CM AF SLAUGHTER, JM SCHULZE, DW HILLS, CR MIRONE, A STALIO, R WATTS, RN TARRIO, C LUCATORTO, TB KRUMREY, M MUELLER, P FALCO, CM TI STRUCTURE AND PERFORMANCE OF SI/MO MULTILAYER MIRRORS FOR THE EXTREME-ULTRAVIOLET SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID X-RAY MICROSCOPY; ELECTRON-MICROSCOPY; MO/SI MULTILAYERS; SCATTERING; LASER; MOLYBDENUM; GERMANIUM; ROUGHNESS; SILICON; GROWTH AB We report the results of structural, chemical, and extreme ultraviolet (EUV) characterization of Si/Mo multilayers grown by sputtering and by UHV evaporation. This study includes mirrors designed for normal incidence with peak reflectivities R(peak) between 22 and 24 nm, and 45-degrees mirrors having R(peak) between 16 and 19 nm. The deposition conditions were varied to produce multilayers with a wide range of interface morphologies. A variety of techniques were used to determine the structure and composition of the multilayers, including x-ray diffraction, transmission electron microscopy, Rutherford backscattering spectroscopy, and Auger depth profiling. All of the mirrors have amorphous Si layers and polycrystalline Mo layers with thin amorphous alloy interlayers. We obtain good fits to the low-angle x-ray diffraction data only when these interlayers are taken into account. The best sputter-deposited mirrors were made at the lowest Ar pressure studied, 3 mTorr. The best evaporated mirrors were produced at a substrate temperature of 200-degrees-C. The EUV reflectivity as a function of wavelength was measured using synchrotron radiation. Both the multilayer structure and surface contamination significantly affect the EUV reflectivity, and must be considered to obtain good fits to the reflectivity curves. The best 45-degrees mirror had a peak reflectivity of 53% at 18.6 nm for 100% S-polarized light, and the best normal-incidence mirror had a peak reflectivity of 33% at 23.6 nm. C1 UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. UNIV TRIESTE,I-34127 TRIESTE,ITALY. CTR ADV RES SPACE OPT,TRIESTE,ITALY. NATL INST STAND & TECHNOL,PHYS LAB,GAITHERSBURG,MD 20899. BESSY,PHYS TECH BUNDESANSTALT LAB,BERLIN,GERMANY. RP SLAUGHTER, JM (reprint author), UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721, USA. RI Krumrey, Michael/G-6295-2011 NR 48 TC 64 Z9 66 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1994 VL 76 IS 4 BP 2144 EP 2156 DI 10.1063/1.357626 PG 13 WC Physics, Applied SC Physics GA PC021 UT WOS:A1994PC02100021 ER PT J AU SOFO, JO MAHAN, GD BAARS, J AF SOFO, JO MAHAN, GD BAARS, J TI TRANSPORT-COEFFICIENTS AND THERMOELECTRIC FIGURE OF MERIT OF N-HG1-XCDXTE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ELECTRON-MOBILITY; BAND-GAP; HG1-XCDXTE; TEMPERATURE; SCATTERING; CDXHG1-XTE; DEPENDENCE; HGCDTE AB The conductivity, Hall coefficient, and thermopower of Hg1-xCdxTe (MCT) are calculated for 00 except for equal reactant adsorption rates. The introduction of desorption produces reactive steady states, and (in different regimes) nonequilibrium poisoning transitions, critical points, and transitions to bistability. C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT MATH,AMES,IA 50011. RP MENG, BQ (reprint author), UNIV CALIF SANTA BARBARA,DEPT CHEM ENGN,SANTA BARBARA,CA 93106, USA. NR 46 TC 29 Z9 29 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1994 VL 101 IS 4 BP 3234 EP 3242 DI 10.1063/1.467570 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PA009 UT WOS:A1994PA00900064 ER PT J AU KIMMEL, GA ORLANDO, TM VEZINA, C SANCHE, L AF KIMMEL, GA ORLANDO, TM VEZINA, C SANCHE, L TI LOW-ENERGY ELECTRON-STIMULATED PRODUCTION OF MOLECULAR-HYDROGEN FROM AMORPHOUS WATER ICE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SOLID H2O; RADIATION-CHEMISTRY; CRYSTALLINE D2O; IRRADIATED ICE; CROSS-SECTIONS; EV SCATTERING; ATTACHMENT; MOBILITY; LUMINESCENCE; FLUORESCENCE AB We have observed, via quadrupole mass spectrometry (QMS), stimulated production of D-2 (H-2) during low-energy (5-50 eV) electron-beam irradiation of D2O (H2O) amorphous ice. The upper limit for the D-2 (H-2) production threshold is 6.3+/-0.5 eV; well below the first excited state of condensed water at 7.3 eV. The D-2 (H-2) yield increases gradually until another threshold is reached at similar to 17 eV and continues to increase monotonically (within experimental error) up to 50 eV. We assign the 6.3 eV threshold to D- (H-)+D2O (H2O)-->D-2 (H-2)+OD- (OH-) condensed phase (primarily surface) reactions that an initiated by dissociative attachment. We associate the yield below similar to 11 eV with the dissociation of Frenkel-type excitons and attribute the yield above similar to 11 eV mainly to the recombination of D2O+, or D3O+, with quasifree or trapped electrons. Exciton dissociation and ion-electron recombination processes can produce reactive energetic D (H) atom fragments or D-2 (H-2) directly via molecular elimination. The importance of D+(H+) interactions increases at similar to 17 eV (dipolar threshold) and at energies greater than or equal to 21 eV where multihole and multielectron final states are energetically accessible. . C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. UNIV SHERBROOKE, MRC, RADIAT SCI GRP, SHERBROOKE J1H 5N4, PQ, CANADA. OI Kimmel, Greg/0000-0003-4447-2440 NR 40 TC 98 Z9 98 U1 6 U2 16 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1994 VL 101 IS 4 BP 3282 EP 3286 DI 10.1063/1.468430 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PA009 UT WOS:A1994PA00900069 ER PT J AU CHEUNG, YS LI, WK CHIU, SW NG, CY AF CHEUNG, YS LI, WK CHIU, SW NG, CY TI 2 ISOMERS OF SF5-CENTER-DOT AND SF5+ - STRUCTURES AND ENERGETICS - COMMENT SO JOURNAL OF CHEMICAL PHYSICS LA English DT Letter ID DISSOCIATION-ENERGIES; GAUSSIAN-2 THEORY; THERMOCHEMISTRY; CATIONS C1 UNIV ILLINOIS,CTR BIOTECHNOL,URBANA,IL 61801. UNIV ILLINOIS,NATL CTR SUPERCOMP APPLICAT,CHAMPAIGN,IL 61820. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. RP CHEUNG, YS (reprint author), CHINESE UNIV HONG KONG,DEPT CHEM,SHA TIN,HONG KONG. NR 22 TC 14 Z9 14 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1994 VL 101 IS 4 BP 3412 EP 3413 DI 10.1063/1.467591 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PA009 UT WOS:A1994PA00900087 ER PT J AU KOURI, DJ HUANG, YH ZHU, W HOFFMAN, DK AF KOURI, DJ HUANG, YH ZHU, W HOFFMAN, DK TI VARIATIONAL-PRINCIPLES FOR THE TIME-INDEPENDENT WAVE-PACKET-SCHRODINGER AND WAVE-PACKET-LIPPMANN-SCHWINGER EQUATIONS (VOL 100, PG 3662, 1994) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Correction, Addition C1 UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP KOURI, DJ (reprint author), UNIV HOUSTON,DEPT CHEM,UNIV PK,HOUSTON,TX 77204, USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD AUG 15 PY 1994 VL 101 IS 4 BP 3414 EP 3414 DI 10.1063/1.468510 PG 1 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA PA009 UT WOS:A1994PA00900088 ER PT J AU YOKOTA, SH DEJONGHE, LC RAHAMAN, MN AF YOKOTA, SH DEJONGHE, LC RAHAMAN, MN TI OXIDATION BEHAVIOR OF REACTION-BONDED ALUMINA COMPACTS USING AN AL88SI12 ALLOY PRECURSOR SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID AL2O3/METAL COMPOSITES; DIRECTED OXIDATION; MULLITE; FABRICATION; CERAMICS AB The oxidation behaviour of attrition-milled Al88Si12/Al2O3 powder mixtures was investigated for the formation of mullite/Al2O3 composites by the reaction bonded alumina (RBAO) process. Cylindrical powder compacts were heated at 5-degrees-C min-1 to temperatures between 450 and 1400-degrees-C. Oxidation occurred rapidly between ca. 400 and 750-degrees-C. Dense, outer reaction layers which formed at the lower temperatures inhibited complete oxidation and led to fracture of the body during continued heating to higher temperatures (above ca. 850-degrees-C) While the incorporation of ZrO2 improved the oxidation of the samples, X-ray analysis indicated that the Si in the alloy reacted with the ZrO2 to form phases which prevented the formation of mullite at the temperatures used in the experiments. C1 UNIV MISSOURI,DEPT CERAM ENGN,ROLLA,MO 65401. RP YOKOTA, SH (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. NR 18 TC 5 Z9 5 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 1994 VL 29 IS 16 BP 4177 EP 4183 DI 10.1007/BF00414196 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA PD445 UT WOS:A1994PD44500005 ER PT J AU DUNNING, JS DOAN, RC AF DUNNING, JS DOAN, RC TI MICROSTRUCTURAL CHARACTERISTICS AND GAS CONTENT OF RAPIDLY SOLIDIFIED POWDERS SO JOURNAL OF MATERIALS SCIENCE LA English DT Article AB The gas content and microstructural characteristics of rapidly solidified powders manufactured by different techniques were studied by Bureau of Mines researchers. Powders were screened and classified into size fractions. Powder characteristics including gas content and porosity were measured and related to powder particle size. Three different atomizing gases, argon, helium, and nitrogen were used in manufacturing the powders. In one series of experiments one gas was used to atomize the melt while a different gas was used in the melting and powder collection chambers. The gas content of the powders was shown to consist of three separate components: (1 ) solid solution, (2) physical entrapment associated with macroporosity, and (3) surface reaction such as surface oxide. The various components of gas content could be identified by the shape of the curve plotting gas content versus particle size. The identification of the presence of entrained gas as porosity from these curves is important because after consolidation, high-pressure bubbles of inert gas can result. This porosity can cause problems during subsequent heating or joining operations, seriously degrading mechanical properties. Analysis of gas content versus particle size represents a sensitive, technique to detect the presence of porosity. RP DUNNING, JS (reprint author), US BUR MINES,ALBANY RES CTR,ALBANY,OR, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD AUG 15 PY 1994 VL 29 IS 16 BP 4268 EP 4272 DI 10.1007/BF00414209 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA PD445 UT WOS:A1994PD44500018 ER PT J AU SODERLIND, P WILLS, JM BORING, AM JOHANSSON, B ERIKSSON, O AF SODERLIND, P WILLS, JM BORING, AM JOHANSSON, B ERIKSSON, O TI A THEORETICAL-STUDY OF THE CRYSTALLOGRAPHIC STRUCTURES IN NEPTUNIUM SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article ID EXTREME COMPRESSIONS; BRILLOUIN-ZONE; SPECIAL POINTS; ELEMENTS; SYSTEMS; CERIUM; BAND; TH AB The total energy has been calculated as a function of volume for various crystal structures in neptunium metal. Around the equilibrium volume the experimentally observed low-temperature structure, alpha-Np, is found to have the lowest energy. As a function of compression we predict Np to undergo a crystallographic phase transition from alpha-Np to BCC. The zero-temperature calculations also show that at volumes close to the alpha-Np --> BCC transition the BCT structure is very close in energy, and high-pressure experiments performed at elevated temperatures on NP may allow observation of this structure as well. C1 LOS ALAMOS NATL LAB, CTR MAT SCI, LOS ALAMOS, NM 87545 USA. LOS ALAMOS NATL LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. RP SODERLIND, P (reprint author), UNIV UPPSALA, DEPT PHYS, CONDENSED MATTER THEORY GRP, BOX 530, S-75105 UPPSALA, SWEDEN. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 23 TC 7 Z9 7 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0953-8984 EI 1361-648X J9 J PHYS-CONDENS MAT JI J. Phys.-Condes. Matter PD AUG 15 PY 1994 VL 6 IS 33 BP 6573 EP 6580 DI 10.1088/0953-8984/6/33/006 PG 8 WC Physics, Condensed Matter SC Physics GA PC866 UT WOS:A1994PC86600006 ER PT J AU CURRO, JG AF CURRO, JG TI INTERMOLECULAR STRUCTURE AND THERMODYNAMICS OF VINYL POLYMER LIQUIDS - FREELY-JOINTED CHAINS SO MACROMOLECULES LA English DT Article ID INTEGRAL-EQUATION THEORY; X-RAY-DIFFRACTION; PAIR CORRELATION-FUNCTIONS; SITE MODEL-THEORY; MOLECULAR LIQUIDS; MONTE-CARLO; CLOSURE APPROXIMATIONS; MICROSCOPIC EQUATIONS; CARBON-DISULFIDE; LOCAL-STRUCTURE AB Polymer reference interaction site model (RISM) calculations are performed on melts of freely-jointed, vinyl polymer chains. The local monomer structure is modeled by three independent, hard-sphere sites corresponding to the CH2 and CH backbone constituents and an arbitrary side-chain group. The six intersite radial distribution functions and partial structure factors are computed for chains of 100 backbone units, at a liquidlike packing fraction of 0.5. It is found that the side-chain groups tend to shield the backbone sites from approaching each other at short distances. The extent of shielding increases with the size of the side-chain group. On a radius of gyration length scale all the radial distribution functions exhibit a universal correlation hole. The total structure factor, proportional to the intensity of scattering, exhibits a low-angle peak not present in a polyethylene-like melt. This low-angle peak grows in intensity and shifts to lower wave vectors as the size of the side-chain moiety increases. The isothermal compressibility, equation-of-state, and cohesive energy of the liquid are found to be functions of the local monomer structure. RP CURRO, JG (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 52 TC 33 Z9 33 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 15 PY 1994 VL 27 IS 17 BP 4665 EP 4672 DI 10.1021/ma00095a005 PG 8 WC Polymer Science SC Polymer Science GA PC276 UT WOS:A1994PC27600005 ER PT J AU SCURLOCK, RD MARTIRE, DO OGILBY, PR TAYLOR, VL CLOUGH, RL AF SCURLOCK, RD MARTIRE, DO OGILBY, PR TAYLOR, VL CLOUGH, RL TI QUANTUM YIELD OF PHOTOSENSITIZED SINGLET OXYGEN (A(1)DELTA-G) PRODUCTION IN SOLID POLYSTYRENE SO MACROMOLECULES LA English DT Article ID MOLECULAR-OXYGEN; RATE-CONSTANT; 1-DELTA-G O2; STATE; IRRADIATION; POLYMERS; SOLVENT; BAND AB The quantum yield of singlet oxygen (a1DELTA(g)), produced by energy transfer from the photosensitizer acridine, has been determined by two independent spectroscopic methods in solid polystyrene. Upon 355-nm pulsed-laser irradiation of acridine at 1.3 mJ/pulse, the O2(a1DELTA(g)) quantum yield in polystryene [phi(DELTA)PS(acridine) = 0.56 +/- 0.05] is slightly smaller than that in a liquid solvent analog such as benzene [phi(DELTA)benz(acridine) = 0.83 +/- 0.06]. These data indicate that the photosensitized yields of O2(a1DELTA(g)) in a solid polymer matrix can nevertheless be appreciable, which may be important for understanding the photodegradation of some polymeric materials or of dyes and other additives dissolved in those materials. C1 UNIV NEW MEXICO,DEPT CHEM,ALBUQUERQUE,NM 87131. SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 44 TC 29 Z9 29 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD AUG 15 PY 1994 VL 27 IS 17 BP 4787 EP 4794 DI 10.1021/ma00095a020 PG 8 WC Polymer Science SC Polymer Science GA PC276 UT WOS:A1994PC27600020 ER PT J AU RAHN, LA BROWN, MS AF RAHN, LA BROWN, MS TI POLARIZATION PROPERTIES OF DEGENERATE 4-WAVE-MIXING IN FLAME OH SO OPTICS LETTERS LA English DT Article ID SPECTROSCOPY AB The polarization properties of backward-box, degenerate four-wave mixing from OH molecules are measured in a flame and compared with theory. Ratios of signal intensities for different laser polarizations are shown to exceed perturbation-theory predictions for a closed two-level system when optical intensity gratings are formed in the interaction volume. These results are shown to be inconsistent with population-nonconserving effects and are attributed to scattering from quenching-induced thermal density gratings. C1 METROLASER INC,IRVINE,CA 92714. RP RAHN, LA (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,POB 969,LIVERMORE,CA 94551, USA. OI Rahn, Larry/0000-0002-4793-1158 NR 13 TC 13 Z9 13 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD AUG 15 PY 1994 VL 19 IS 16 BP 1249 EP 1251 DI 10.1364/OL.19.001249 PG 3 WC Optics SC Optics GA PA201 UT WOS:A1994PA20100023 PM 19855485 ER PT J AU BHATTACHARYA, RN BLAUGHER, RD AF BHATTACHARYA, RN BLAUGHER, RD TI PREPARATION OF HIGH-TEMPERATURE SUPERCONDUCTOR OXIDE POWDERS BY ELECTRODEPOSITION SO PHYSICA C LA English DT Article ID THIN-FILMS; YBACUO; TL2CABA2CU2OY; TLBACACUO AB Superconducting precursor powders have been prepared using an electrodeposition process. The electrodeposition technique deposits all of the precursor components, including Tl, at the same time providing mixing on an atomic scale that reduces the reaction time to the order of minutes to obtain the desired phase development. The magnetization measurements of the annealed powder showed an intrinsic J(c) of about 10(5) A/cm2 at 77 K in zero field. A current density near 10(4) A/cm2 at 77 K in zero field was obtained for powder-in-tube (PIT) tape processed using electrodeposited precursor. This PIT tape showed the promising single-layer 1223 phase formation. RP BHATTACHARYA, RN (reprint author), NATL RENEWABLE ENERGY LAB,617 COLE BLVD,GOLDEN,CO 80401, USA. NR 18 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 AUG 15 PY 1994 VL 229 IS 3-4 BP 244 EP 250 DI 10.1016/0921-4534(94)90502-9 PG 7 WC Physics, Applied SC Physics GA PG542 UT WOS:A1994PG54200004 ER PT J AU CHIEN, TR DATARS, WR VEAL, BW PAULIKAS, AP KOSTIC, P GU, C JIANG, Y AF CHIEN, TR DATARS, WR VEAL, BW PAULIKAS, AP KOSTIC, P GU, C JIANG, Y TI DIMENSIONAL CROSSOVER AND OXYGEN DEFICIENCY IN YBA2CU3OX SINGLE-CRYSTALS SO PHYSICA C LA English DT Article ID HIGH-TC SUPERCONDUCTORS; PHASE-DIAGRAM; ANISOTROPIC SUPERCONDUCTORS; II SUPERCONDUCTORS; BEHAVIOR; MAGNETIZATION; TRANSITION; DEPENDENCE; FIELDS; TORQUE AB The penetration depth anisotropy ratio gamma of equilibrated, oxygen-deficient YBa2Cu3Ox superconducting single crystals (7 > x > 6.35) has been measured by the equilibrium torque magnetometry method. The experiments were performed in a 1.8 T field at temperatures several K below the onset T(c) of superconductivity. The anisotropy gamma value of YBa2Cu3Ox increases sharply from gamma = 8.7 +/- 0.2 for x almost-equal-to 6.93 to gamma = 105 +/- 7 for x almost-equal-to 6.40. Oxygen deficiency in the CuO chain sites reduces the number of the 2-coordinated, monovalent Cu(1) ions, which in turn reduces the hole doping in the weakly coupled CuO2 planes and suppresses the superconductivity. Our experiment indicates that the interlayer coupling, or the anisotropy, is strongly correlated with the oxygen stoichiometry x or the in-plane hole concentration p(pl) per CuO2 unit. The YBa2Cu3Ox system changes from three-dimensional to two-dimensional when p(pl) is reduced from approximately 0.2 to approximately 0.05 with p(pl) almost-equal-to 0.1 as a crossover regime. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP CHIEN, TR (reprint author), MCMASTER UNIV,DEPT METEOROL,HAMILTON L8S 4L8,ONTARIO,CANADA. NR 38 TC 55 Z9 55 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 AUG 15 PY 1994 VL 229 IS 3-4 BP 273 EP 279 DI 10.1016/0921-4534(94)90507-X PG 7 WC Physics, Applied SC Physics GA PG542 UT WOS:A1994PG54200009 ER PT J AU KAMIYAMA, T IZUMI, F TAKAHASHI, H JORGENSEN, JD DABROWSKI, B HITTERMAN, RL HINKS, DG SHAKED, H MASON, TO SEABAUGH, M AF KAMIYAMA, T IZUMI, F TAKAHASHI, H JORGENSEN, JD DABROWSKI, B HITTERMAN, RL HINKS, DG SHAKED, H MASON, TO SEABAUGH, M TI PRESSURE-INDUCED STRUCTURAL-CHANGES IN ND2-XCEXCUO4 (X=0 AND 0.165) SO PHYSICA C LA English DT Article ID NEUTRON POWDER DIFFRACTION; TRANSITION-TEMPERATURE; TRANSPORT-PROPERTIES; HOLE CONCENTRATION; LATTICE-CONSTANTS; SINGLE-CRYSTALS; UNIAXIAL-STRESS; CHARGE-TRANSFER; DEPENDENCE; SUPERCONDUCTORS AB The crystal structures of Nd2CuO4 and superconducting Nd1.835Ce0.165CuO4 under hydrostatic pressure up to 0.6 GPa have been investigated by time-of-flight neutron powder diffraction with a He gas pressure cell. The a and c parameters and the volumes of the tetragonal unit cells decreased linearly with increasing pressure. The bulk moduli, K, are 134 GPa for Nd2CuO4 and 140 GPa for the Ce-doped sample. These K values lie between those of La1.85Sr0.15CuO4 and La1.82Ca1.18Cu2O6. The compressibilities along the c axes were about 1.5 times as large as those along the a axes. The linear compressibilities along the a and c axes and the bulk moduli were compared with those calculated on the basis of a simple compression model proposed by Cornelius et al. The negligible effect of pressure on the T(c) of Nd2-xCexCuO4 is discussed in connection with the crystal data obtained in this study. C1 UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN. NORTHWESTERN UNIV,DEPT MAT SCI & ENGN,EVANSTON,IL 60208. NATL INST RES INORGAN MAT,SAKURA,IBARAKI 305,JAPAN. BEN GURION UNIV NEGEV,DEPT PHYS,IL-84105 BEER SHEVA,ISRAEL. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NO ILLINOIS UNIV,DEPT PHYS,DE KALB,IL 60115. RP KAMIYAMA, T (reprint author), UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 30031,JAPAN. RI Mason, Thomas/B-7528-2009 NR 44 TC 18 Z9 18 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 AUG 15 PY 1994 VL 229 IS 3-4 BP 377 EP 388 DI 10.1016/0921-4534(94)90521-5 PG 12 WC Physics, Applied SC Physics GA PG542 UT WOS:A1994PG54200023 ER PT J AU HJELM, A TRYGG, J ERIKSSON, O JOHANSSON, B WILLS, J AF HJELM, A TRYGG, J ERIKSSON, O JOHANSSON, B WILLS, J TI FIELD-INDUCED MAGNETISM IN ITINERANT F-ELECTRON SYSTEMS - U, PU, AND CE SO PHYSICAL REVIEW B LA English DT Article ID VOLUME COLLAPSE; CERIUM; BAND; TRANSITION; SUSCEPTIBILITY; ENERGIES; METALS AB We demonstrate, by means of first-principles calculations, that in the field-induced magnetic state of alpha-cerium and alpha-uranium the spin and orbital moments are coupled parallel rather than antiparallel as expected from Hund's third rule. This behavior gives a magnetic form factor for alpha-uranium in very good agreement with experiment. The calculated form factor of alpha-cerium, when assuming that the f electron is itinerant, is very different from the localized Ce3+ form factor, and we propose that a measurement of the magnetic form factor of alpha-Ce can indicate whether the f state is localized or itinerant. The held-induced magnetism of plutonium is shown to be almost exclusively of orbital character and the induced spin density of plutonium is highly anomalous. C1 UNIV UPPSALA,DEPT PHYS,CONDENSED MATTER THEORY GRP,S-75121 UPPSALA,SWEDEN. LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP HJELM, A (reprint author), UNIV UPPSALA,DEPT TECHNOL,BOX 534,S-75121 UPPSALA,SWEDEN. RI Eriksson, Olle/E-3265-2014 OI Eriksson, Olle/0000-0001-5111-1374 NR 34 TC 18 Z9 18 U1 1 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4332 EP 4340 DI 10.1103/PhysRevB.50.4332 PG 9 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300008 ER PT J AU COOKE, DW LEON, M PACIOTTI, MA MEIER, PF COX, SFJ DAVIS, EA ESTLE, TL HITTI, B LICHTI, RL BOEKEMA, C LAM, J MORROBELSOSA, A OOSTENS, J AF COOKE, DW LEON, M PACIOTTI, MA MEIER, PF COX, SFJ DAVIS, EA ESTLE, TL HITTI, B LICHTI, RL BOEKEMA, C LAM, J MORROBELSOSA, A OOSTENS, J TI FIELD-DEPENDENCE OF THE LONGITUDINAL MUON POLARIZATION FOR ANOMALOUS MUONIUM SO PHYSICAL REVIEW B LA English DT Article ID SILICON; CRYSTALLINE; STATES AB An unusual longitudinal-magnetic-field dependence of the muon polarization for anomalous muonium (Mu*) in polycrystalline semiconductor targets is predicted, and has been observed for Si. As a function of field, the experimentally measured muon polarization at 53 K exhibits a cusp, i.e., a discontinuous jump in the slope from negative to positive, at 340(5) mT, in good agreement with theory. This occurs because the effective field on the mu(+) vanishes at this external field as the angle between it and the Mu* symmetry axis approaches 90 degrees. At 200 K no cusp is seen because Mu* has been thermally annihilated. Fractional populations of the different muonium species are derived from the 53-K data. All Mu* and other anisotropic centers, including molecular radicals, should exhibit such a cusp, allowing the possibility of observing such species even in disordered or amorphous solids where spectroscopic detection might be impossible. Integral counting (and therefore very high data rates) can be used for these observations. C1 UNIV ZURICH,INST PHYS,CH-8057 ZURICH,SWITZERLAND. UNIV LEICESTER,DEPT PHYS & ASTRON,LEICESTER LE1 7RH,LEICS,ENGLAND. RICE UNIV,DEPT PHYS,HOUSTON,TX 77251. TEXAS TECH UNIV,DEPT PHYS,LUBBOCK,TX 79409. SAN JOSE STATE UNIV,DEPT PHYS,SAN JOSE,CA 95192. CALIF POLYTECH STATE UNIV SAN LUIS OBISPO,SAN LUIS OBISPO,CA 93407. LINDSEY WILSON COLL,DEPT SCI,COLUMBIA,KY 42728. RUTHERFORD APPLETON LAB,CHILTON OX11 0QX,OXON,ENGLAND. RP COOKE, DW (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 15 TC 9 Z9 9 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4391 EP 4396 DI 10.1103/PhysRevB.50.4391 PG 6 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300015 ER PT J AU ROMANO, LT BRINGANS, RD KNALL, J BIEGELSEN, DK GARCIA, A NORTHRUP, JE OKEEFE, MA AF ROMANO, LT BRINGANS, RD KNALL, J BIEGELSEN, DK GARCIA, A NORTHRUP, JE OKEEFE, MA TI ATOMIC REARRANGEMENT AT THE INTERFACE OF ANNEALED ZNSE FILMS GROWN ON VICINAL SI(001) SUBSTRATES SO PHYSICAL REVIEW B LA English DT Article ID SI(100) SURFACE; SOLIDS AB Significant atomic rearrangement at the interface was found to take place after post-growth annealing treatments of epitaxial ZnSe on As-passivated Si(001) substrates which were tilted by 4 degrees towards the [1 $($) over bar$$ 10] direction. The thermal stability of the ZnSe/As:Si interface was studied by rapid thermal annealing at temperatures up to 960 degrees C after growing an epitaxial GaAs cap layer to prevent evaporation of the ZnSe during the anneals. The ZnSe/As:Si interface was examined by high-resolution electron microscopy. After an anneal at 900 degrees C the ZnSe/As:Si interface transformed from an atomically smooth interface found in the as-grown films to a facetted structure with {111}-oriented sidewalls that extended preferentially in the [1 $($) over bar$$ 10] direction. The 60 degrees dislocations that were previously observed along this direction combined into closely spaced pairs or into Lomer dislocations which were associated with the facets. We present a model for the atomic structure of the facetted interface which is consistent with the experimental data and satisfies electron-counting considerations. Total-energy calculations of the ZnSe/As:Si(001) interface were compared with those for the {111} interfaces seen after facetting. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,DIV MAT SCI,BERKELEY,CA 94720. RP ROMANO, LT (reprint author), XEROX CORP,PALO ALTO RES CTR,3333 COYOTE HILL RD,PALO ALTO,CA 94304, USA. RI Garcia, Alberto/A-7460-2008 OI Garcia, Alberto/0000-0001-5138-9579 NR 13 TC 15 Z9 16 U1 0 U2 3 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4416 EP 4423 DI 10.1103/PhysRevB.50.4416 PG 8 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300017 ER PT J AU GOTHELID, M HAMMAR, M BJORKQVIST, M KARLSSON, UO FLODSTROM, SA WIGREN, C LELAY, G AF GOTHELID, M HAMMAR, M BJORKQVIST, M KARLSSON, UO FLODSTROM, SA WIGREN, C LELAY, G TI GEOMETRY OF THE GE(111)-AU(ROOT-3X-ROOT-3)R 30-DEGREES RECONSTRUCTION SO PHYSICAL REVIEW B LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; SURFACE; INTERFACE; GE(111); GROWTH AB A structure model for the Ge(111)-Au(root 3X root 3)R30 degrees surface reconstruction is proposed based on scanning tunneling microscopy (STM) and photoelectron spectroscopy on the Ge 3d and Au 4f core lines. The basic unit is a Au3Ge molecule binding in one-third of the T-1 substrate sites with a gold trimer pointing out of the surface. This leaves two-thirds of a monolayer of unoccupied T-1 sites which make up a hexagonal honeycomb pattern. Two types of STM images have been obtained which are explained within this model, where either the trimers or the substrate Ge atoms are probed depending on the specific tip conditions in combination with the sample bias voltage. Furthermore, small insets of a metallic (1X1) structure are found at low gold coverage together with a distorted (2X2) surface structure. C1 STANFORD LINEAR ACCELERATOR CTR,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309. CNRS,CTR RECH MECANISMES CROISSANCE CRISTALLINE,F-13288 MARSEILLE 09,FRANCE. RP GOTHELID, M (reprint author), ROYAL INST TECHNOL,DEPT PHYS,S-10044 STOCKHOLM,SWEDEN. NR 17 TC 18 Z9 18 U1 0 U2 6 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4470 EP 4475 DI 10.1103/PhysRevB.50.4470 PG 6 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300025 ER PT J AU QUONG, AA PEDERSON, MR BROUGHTON, JQ AF QUONG, AA PEDERSON, MR BROUGHTON, JQ TI BORON HYDRIDE ANALOGS OF THE FULLERENES SO PHYSICAL REVIEW B LA English DT Article ID NONLOCAL PSEUDOPOTENTIAL APPROACH; MOLECULES; CARBON; SOLIDS; POLARIZABILITIES; SIMULATIONS; EXAMPLES; SYSTEMS; CLUSTER; DIAMOND AB The BH moiety is isoelectronic with C. We have studied the stability of the (BH)(60) analogue of the C-60 fullerene as well as the dual-structure (BH)(32) icosahedron, both of them being putative structures, by performing local-density-functional electronic calculations. To aid in our analysis, we have also studied other homologues of these systems. We find that the latter, i.e., the dual structure, is the more stable although the former is as stable as one of the latter's lower homologues. Boron hydrides, it seems, naturally form the dual structures used in algorithmic optimization of complex fullerene systems. Fully relaxed geometries are reported as well as electron affinities and effective Hubbard U parameters. These systems form very stable anions and we conclude that a search for BH analogues of the C-60 alkali-metal supeconductors might prove very fruitful. C1 USN,RES LAB,WASHINGTON,DC 20375. RP QUONG, AA (reprint author), SANDIA NATL LABS,LIVERMORE,CA 94551, USA. NR 38 TC 24 Z9 25 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4787 EP 4794 DI 10.1103/PhysRevB.50.4787 PG 8 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300064 ER PT J AU NORTHRUP, JE ZHANG, SB AF NORTHRUP, JE ZHANG, SB TI ENERGETICS OF THE AS VACANCY IN GAAS - THE STABILITY OF THE 3+ CHARGE-STATE SO PHYSICAL REVIEW B LA English DT Note ID ELECTRONIC-STRUCTURE; FORMATION ENERGIES; NATIVE DEFECTS; DIFFUSION; SEMICONDUCTORS; 1ST-PRINCIPLES; SI AB Total-energy calculations predict that the As vacancy in GaAs adopts a 3+ charge state under p-type conditions, and that the formation energy of V-As(3+) is competitive with that of the gallium intrstitial Ga-i(3+). After a breathing-mode relaxation, which reduces the energy by more than 1.5 eV, the nearest-neighbor Ga atoms exhibit a nearly sp(2) bonding configuration. On the basis of our results we propose that charged anion vacancies with sp(2)-bonded cation neighbors should be examined as possible mechanisms for the compensation of p-type doping in III-V and II-VI semiconductors, and as possible facilitators of acceptor diffusion and anion selfdiffusion in these materials. C1 NATL RENEWABLE ENERGY LAB,GOLDEN,CO 80401. RP NORTHRUP, JE (reprint author), XEROX CORP,PALO ALTO RES CTR,3333 COYOTE HILL RD,PALO ALTO,CA 94304, USA. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 NR 15 TC 55 Z9 55 U1 0 U2 9 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4962 EP 4964 DI 10.1103/PhysRevB.50.4962 PG 3 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300099 ER PT J AU LYO, SK AF LYO, SK TI TRANSPORT AND LEVEL ANTICROSSING IN STRONGLY COUPLED DOUBLE-QUANTUM WELLS WITH INPLANE MAGNETIC-FIELDS SO PHYSICAL REVIEW B LA English DT Note ID FERMI-SURFACE AB Interesting in-plane low-temperature transport properties are proposed in doped thin double quantum wells in an in-plane magnetic field (B). The density of states diverges at a saddle point (SP). The SP is formed at the lower edge of the partial energy gap at a sufficiently high B due to an anticrossing of the two displaced energy-dispersion parabolas. At high carrier densities, the conductance (G) shows a maximum when the upper branch is emptied and a minimum at a higher B = B-min when the Fermi level lies at the SP. These features are confirmed by recent data. At low densities (i.e., with only the lower branch populated), only a G minimum is predicted to occur. The electron-diffusion thermopower diverges both above and below B-min with opposite signs. The correlation between the recently observed tunneling G and the in-plane G is discussed. RP LYO, SK (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 8 TC 90 Z9 90 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 4965 EP 4968 DI 10.1103/PhysRevB.50.4965 PG 4 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300100 ER PT J AU WANG, WZ BISHOP, AR YU, L AF WANG, WZ BISHOP, AR YU, L TI DYNAMIC JAHN-TELLER-INDUCED INFRARED-ABSORPTION OF A CHARGED C-60(-) MOLECULE SO PHYSICAL REVIEW B LA English DT Note ID DOPED C-60; PHOTOPHYSICAL PROPERTIES; ELECTRONIC-STRUCTURE; FULLERENE C-60; SPECTRA; C60; SUPERCONDUCTIVITY; ANIONS; BUCKMINSTERFULLERENE; MATRICES AB The observable consequences of the dynamic Jahn-Teller effect due to quantum fluctuations between the six degenerate D-5d polaronic configurations on a singly charged C-60(-) molecule are considered. The multiphonon infrared-absorption spectrum is calculated taking into account the dynamic symmetry breaking. Some of the Jahn-Teller active (also Raman-active) modes are predicted to be observable as multiphonon overtones in the infrared absorption. C1 INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY. CHINESE ACAD SCI,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA. RP WANG, WZ (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 61 TC 24 Z9 25 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 7 BP 5016 EP 5019 DI 10.1103/PhysRevB.50.5016 PG 4 WC Physics, Condensed Matter SC Physics GA PD753 UT WOS:A1994PD75300113 ER PT J AU STRAUB, GK AIDUN, JB WILLS, JM SANCHEZCASTRO, CR WALLACE, DC AF STRAUB, GK AIDUN, JB WILLS, JM SANCHEZCASTRO, CR WALLACE, DC TI AB-INITIO CALCULATION OF MELTING AND THERMODYNAMIC PROPERTIES OF CRYSTAL AND LIQUID ALUMINUM SO PHYSICAL REVIEW B LA English DT Article ID BRILLOUIN-ZONE INTEGRATION; MOLECULAR-DYNAMICS; ELASTIC-CONSTANTS; HIGH-PRESSURES; SIMPLE METALS; SODIUM; AL AB A first-principles technique for calculating accurate equations of state of metals is illustrated with an application to Al. Results for the thermodynamic properties of Al at densities near normal, and at temperatures into the liquid phase, are presented. In contrast to previous calculations by other workers, the present technique makes no use of experimental data. The ab initio procedure begins with electronic-band-structure calculation of the ground-state energy, the elastic constants, and selected short-wavelength phonons. A physically realistic interatomic potential is calibrated by fitting it to the calculated elastic constants and phonons. Ion-motional contributions are computed from quasiharmonic lattice dynamics at low temperatures, and from molecular-dynamics simulations at classical temperatures. Melting is computed from the free energy constructed from these combined results. Very accurate results are obtained for zero-temperature properties and phonon frequencies. The calculated melting temperature of 955 K is within 2.5% of the observed value, a difference comparable to the estimated precision of the calculation. Good results are obtained for two highly sensitive quantities, the entropy change upon melting and the Clapeyron slope. The calculated entropy as a function of temperature is in excellent agreement with experiment for solid and liquid phases. The present procedure can potentially provide reliable values of thermodynamic properties of any metal under extreme conditions where no data are available. RP STRAUB, GK (reprint author), LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. NR 41 TC 38 Z9 38 U1 2 U2 8 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5055 EP 5061 DI 10.1103/PhysRevB.50.5055 PG 7 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300003 ER PT J AU SOUKOULIS, CM VELGAKIS, MJ ECONOMOU, EN AF SOUKOULIS, CM VELGAKIS, MJ ECONOMOU, EN TI ONE-DIMENSIONAL LOCALIZATION WITH CORRELATED DISORDER SO PHYSICAL REVIEW B LA English DT Article ID LEVEL STATISTICS; DENSITY; MODEL AB A one-dimensional tight-binding model with correlated disorder is studied. The energy dependence of the localization length and the density of states at different correlation lengths and strengths of the disorder are determined. The results show that the localization length increases with increasing correlation lengths, but in addition, a nonmontonic energy dependence is found. The energy level statistics is also studied. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. UNIV PATRAS,DEPT SCI,SCH ENGN,GR-26110 PATRAI,GREECE. RES CTR CRETE,GR-71110 IRAKLION,GREECE. UNIV CRETE,DEPT PHYS,GR-71110 IRAKLION,GREECE. RP SOUKOULIS, CM (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Economou, Eleftherios /E-6374-2010; Soukoulis, Costas/A-5295-2008 NR 16 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 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5110 EP 5118 DI 10.1103/PhysRevB.50.5110 PG 9 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300010 ER PT J AU ELSASSER, C FAHNLE, M SCHIMMELE, L CHAN, CT HO, KM AF ELSASSER, C FAHNLE, M SCHIMMELE, L CHAN, CT HO, KM TI RANGE OF FORCES ON HOST-METAL ATOMS AROUND INTERSTITIAL HYDROGEN IN PD AND NB SO PHYSICAL REVIEW B LA English DT Article ID 1ST-PRINCIPLES PSEUDOPOTENTIAL CALCULATIONS; 4D-TRANSITION METALS; NEUTRON-SCATTERING; TRANSITION-METALS; TOTAL ENERGIES; NIOBIUM; PALLADIUM AB Forces on the host-metal atoms surrounding a hydrogen atom at different interstitial positions in palladium and niobium are calculated from first principles in the local-density approximation with a mixed-basis pseudopotential supercell approach. For supercells Pd(n)H (n = 1,4,8,16,32) previously reported results are reanalyzed and corrected based on a recently noticed simplification in the computational method. Results are presented for supercells Nb(n)H (n = 1,2,4,8,16). In both elements the displacement forces decay dominantly within the range of one lattice constant. The elastic force-dipole tensors are determined from the first-principles forces. The results for octahedral occupation of H in Pd and tetrahedral occupation of H in Nb support the picture of static occupation of distinct interstitial sites. C1 IOWA STATE UNIV SCI & TECHNOL, AMES LAB, AMES, IA 50011 USA. IOWA STATE UNIV SCI & TECHNOL, DEPT PHYS, AMES, IA 50011 USA. RP MAX PLANCK INST MET RES, INST PHYS, HEISENBERGSTR 1, D-70569 STUTTGART, GERMANY. NR 24 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 1098-0121 EI 1550-235X J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5155 EP 5159 DI 10.1103/PhysRevB.50.5155 PG 5 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300014 ER PT J AU WALUKIEWICZ, W AF WALUKIEWICZ, W TI DEFECT FORMATION AND DIFFUSION IN HEAVILY-DOPED SEMICONDUCTORS SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; BIPOLAR-TRANSISTOR STRUCTURES; GALLIUM-ARSENIDE; POINT-DEFECTS; PHASE EPITAXY; GAAS; REDISTRIBUTION; GA0.47IN0.53AS; BERYLLIUM; PROFILES AB The effect of high free-carrier concentrations on the formation of native defects is considered. It is shown that the onset of degenerate carrier statistics results in an abrupt reduction of the formation energy of charged native defects and an enhanced diffusion of impurities and host lattice atoms. The effects are especially important in very heavily doped semiconductors at reduced growth and processing temperatures. As an example, it is shown that the proper incorporation of the effects of the degenerate statistics is necessary for understanding the mechanisms determining the maximum attainable concentration of free carriers in p- and n-type InxGa1-xAs. RP WALUKIEWICZ, W (reprint author), LAWRENCE BERKELEY LAB,DIV MAT SCI,CTR ADV MAT,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 21 TC 50 Z9 52 U1 2 U2 15 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5221 EP 5225 DI 10.1103/PhysRevB.50.5221 PG 5 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300022 ER PT J AU PAINTER, GS AVERILL, FW AF PAINTER, GS AVERILL, FW TI LOCAL-BONDING TRENDS IN THE COHESION OF METALS SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; SPIN-DENSITY; CLUSTERS; MICROCLUSTERS; EVOLUTION; ATOMS AB First-principles atomic-cluster calculations have been carried out in the local-density approximation (LDA) for small clusters (six-atom octahedra) for each metallic element of the Periodic Table through Cu. Trends in ground-state properties of these clusters have been found to bear a significant relationship to corresponding trends in the crystalline solids. Binding energies and bond lengths for these clusters, which form fragments of the crystal lattice, display trends with atomic number which are very similar to the trends in experimental cohesive energies and lattice constants for the solid. An even closer correspondence is found when comparing with results from LDA band-structure calculations. The accuracy of small clusters in representing these trends in solids indicates that local interactions are dominant in determining the variations in cohesive and structural properties that distinguish one metal from another. Energy shifts that result from coupling the cluster to the rest of the solid are rather unform within different families of metals. C1 JUDSON COLL,ELGIN,IL 60123. RP PAINTER, GS (reprint author), OAK RIDGE NATL LAB,DIV MET & CERAM,POB 2008,OAK RIDGE,TN 37831, USA. NR 38 TC 6 Z9 6 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5545 EP 5551 DI 10.1103/PhysRevB.50.5545 PG 7 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300058 ER PT J AU FITZSIMMONS, MR EASTMAN, JA VONDREELE, RB THOMPSON, LJ AF FITZSIMMONS, MR EASTMAN, JA VONDREELE, RB THOMPSON, LJ TI ROLES OF GRAIN-SIZE AND STRAIN ON ANTIFERROMAGNETIC ORDER IN NANOCRYSTALLINE CHROMIUM SO PHYSICAL REVIEW B LA English DT Article ID ELECTRONIC-STRUCTURE; MAGNETIC-PROPERTIES; PARTICLES; SURFACE; IRON; CR; FERROMAGNETS; DIFFRACTION; NEUTRON; NICKEL AB Neutron-diffraction investigations of powder and consolidated ultrafine-grain-sized chromium samples indicated that antiferromagnetic order in the body-centered-cubic phase of this material can be suppressed to well below the Neel temperature of coarse-grained and single-crystal chromium. The suppression is correlated strongly with decreasing grain size. Antiferromagnetic order was not observed in powder or in consolidated samples with grain sizes less than 16 nm, indicating that free surfaces and grain boundaries play the same role in preventing antiferromagnetic order with the structure of bulk chromium. Antiferromagnetic order was observed in nanocrystalline samples with grain sizes greater than 19 nm at 20 K. No correlation is seen between the Neel temperature and the degree of long-range microstrain, or with contents of light-element impurities in the samples. Even in cases where antiferro-magnetic order is detected, the transversely polarized AF1 spin-density-wave magnetic phase is never seen. While this may suggest that spin-density-wave phases do not occur in nanocystalline chromium, the presence of the longitudinally polarized AF2 spin-density-wave phase cannot be ruled out unambiguously. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP FITZSIMMONS, MR (reprint author), LOS ALAMOS NATL LAB,MANUEL LUJAN JR NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545, USA. RI Eastman, Jeffrey/E-4380-2011; Lujan Center, LANL/G-4896-2012; OI Eastman, Jeff/0000-0002-0847-4265 NR 35 TC 16 Z9 16 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5600 EP 5608 DI 10.1103/PhysRevB.50.5600 PG 9 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300065 ER PT J AU RHEE, JY HARMON, BN LYNCH, DW AF RHEE, JY HARMON, BN LYNCH, DW TI OPTICAL-PROPERTIES AND ELECTRONIC-STRUCTURES OF CESN3 AND LASN3 SO PHYSICAL REVIEW B LA English DT Note AB The dielectric functions of CeSn3 and LaSn3 were remeasured to correct errors in previous measurements. The partial-sum rule for the optical conductivity shows that CeSn3 has about 0.54 electrons per formula unit more than LaSn3 contributing to the conductivity in the 1.5-5.4 eV region. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. RP RHEE, JY (reprint author), IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011, USA. NR 5 TC 3 Z9 3 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD AUG 15 PY 1994 VL 50 IS 8 BP 5693 EP 5694 DI 10.1103/PhysRevB.50.5693 PG 2 WC Physics, Condensed Matter SC Physics GA PG283 UT WOS:A1994PG28300076 ER PT J AU SHI, X SCHRAMM, DN DEARBORN, DSP AF SHI, X SCHRAMM, DN DEARBORN, DSP TI ON SOLAR MODEL SOLUTIONS TO THE SOLAR-NEUTRINO PROBLEM SO PHYSICAL REVIEW D LA English DT Article ID CAPTURE RATE; SUN; HELIOSEISMOLOGY AB Without assuming any solar neutrino spectra but merely assuming pure nu(e) emissions from the Sun, neutrinos seen by the Kamiokande experiment should produce at least 2.6 +/- 0.45 SNU in the lower threshold Homestake experiment. This rate is compared with the total event rate of 2.55 +/- 0.25 SNU observed by the Homestake experiment which solar models tell us should measure not only B-8 neutrinos seen by the Kamiokande but also uncertainty-free pep neutrinos (which contribute 0.2 SNU) as well as Be-7 neutrinos whose energies are below the Kamiokande threshold. This comparison may imply that Be-7 neutrinos are more severely suppressed than the B-8 neutrinos with respect to the predictions of standard solar models, which cannot be explained by any known astrophysics solution. (In particular, this argument is independent of uncertainties in solar nuclear reaction rates.) It is also noted that the lower limit that the Kamiokande observations set on the B-8 neutrino flux restricts variations of standard solar models to require minimal rates of 3.6 SNU for the Homestake experiment and 114 SNU for GALLEX and SAGE to achieve consistency (and still fit helioseismic data). Therefore, variations of standard solar models as solutions to the solar neutrino problem are inconsistent with the Homestake experiment and only marginally allowed by the gallium experiments. If the gallium experiments eventually confirm a flux significantly below 114 SNU, it would seem to imply new neutrino physics. C1 NASA,FERMILAB ASTROPHYS CTR,FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP SHI, X (reprint author), UNIV CHICAGO,CHICAGO,IL 60637, USA. NR 39 TC 47 Z9 47 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 AUG 15 PY 1994 VL 50 IS 4 BP 2414 EP 2420 DI 10.1103/PhysRevD.50.2414 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100011 ER PT J AU CHENG, BL OLINTO, AV AF CHENG, BL OLINTO, AV TI PRIMORDIAL MAGNETIC-FIELDS GENERATED IN THE QUARK-HADRON TRANSITION SO PHYSICAL REVIEW D LA English DT Article ID PHASE-TRANSITION; EARLY UNIVERSE; NUCLEOSYNTHESIS; DIFFUSION; QCD AB We propose a mechanism by which magnetic fields of magnitude up to 10(8) G are generated at the quark-hadron phase transition. The primordial field is generated by currents formed at the boundaries between the quark and hadron phases, where charge separation occurs. We estimate the magnetic field generated during this phase and discuss its subsequent evolution and possible implications at later times. Today, this seed field would have an amplitude less than or similar to 10(-10) muG on scales of approximately 1 pc in the intergalactic medium, and in the galactic interstellar medium it would correspond to less than or similar to 10(-5) muG on scales of approximately 10(13) AU and less than or similar to 10(-14) muG on kpc scales. The generated field may act as a seed for galactic and stellar fields. C1 UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637. RP CHENG, BL (reprint author), LOS ALAMOS NATL LAB,MS D436,LOS ALAMOS,NM 87545, USA. NR 32 TC 113 Z9 113 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 AUG 15 PY 1994 VL 50 IS 4 BP 2421 EP 2424 DI 10.1103/PhysRevD.50.2421 PG 4 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100012 ER PT J AU BORRILL, J COPELAND, EJ LIDDLE, AR STEBBINS, A VEERARAGHAVAN, S AF BORRILL, J COPELAND, EJ LIDDLE, AR STEBBINS, A VEERARAGHAVAN, S TI TEXTURE-INDUCED MICROWAVE BACKGROUND ANISOTROPIES SO PHYSICAL REVIEW D LA English DT Article ID COLD DARK-MATTER; LARGE-SCALE STRUCTURE; GLOBAL TEXTURE; COSMIC STRUCTURE; DOMAIN-WALLS; EVOLUTION; ORIGIN; COSMOLOGY; STRINGS AB We use numerical simulations to calculate the cosmic microwave background anisotropy induced by the evolution of a global texture field, with special emphasis on individual textures. Both spherically symmetric and general configurations are analyzed, and in the latter case we consider field configurations which exhibit unwinding events and also ones which do not. We compare the results given by evolving the field numerically under both the expanded core (XCORE) and nonlinear sigma model (NLSM) approximations with the analytic predictions of the NLSM exact solution for a spherically symmetric self-similar (SSSS) unwinding. We find that the random unwinding configuration spots' typical peak height is 60-75% and angular size typically only 10% of those of the SSSS unwinding, and that random configurations without an unwinding event nonetheless may generate indistinguishable hot and cold spots. A brief comparison is made with other work. C1 UNIV SUSSEX,SCH MATH & PHYS SCI,BRIGHTON BN1 9QH,E SUSSEX,ENGLAND. NASA,FERMILAB ASTROPHYS CTR,FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. NR 31 TC 17 Z9 17 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 AUG 15 PY 1994 VL 50 IS 4 BP 2469 EP 2478 DI 10.1103/PhysRevD.50.2469 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100017 ER PT J AU KOLB, EW VADAS, SL AF KOLB, EW VADAS, SL TI RELATING SPECTRAL INDEXES TO TENSOR AND SCALAR AMPLITUDES IN INFLATION SO PHYSICAL REVIEW D LA English DT Article ID MICROWAVE BACKGROUND ANISOTROPY; GRAVITATIONAL-WAVES; EXTENDED INFLATION; PERTURBATIONS; COBE AB Within an expansion in slow-roll inflation parameters, we derive the complete second-order expressions relating the ratio of tensor to scalar density perturbations and the spectral index of the scalar spectrum. We find that ''corrections'' to previously derived formulas can dominate if the tensor to scalar ratio is small. For instance, if VV''/(V')2 not-equal 1 or if [m(Pl)2/(4pi)]\V'''/V'\ greater than or similar to 1, where V(phi) is the inflaton potential and m(Pl) is the Planck mass, then the previously used simple relations between the indices and the tensor to scalar ratio fails. This failure occurs in particular for natural inflation, Coleman-Weinberg inflation, and ''chaotic'' inflation. C1 UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. RP KOLB, EW (reprint author), NASA,FERMILAB ASTROPHYS CTR,FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. NR 28 TC 32 Z9 32 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 AUG 15 PY 1994 VL 50 IS 4 BP 2479 EP 2487 DI 10.1103/PhysRevD.50.2479 PG 9 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100018 ER PT J AU COOPER, F HABIB, S KLUGER, Y MOTTOLA, E PAZ, JP ANDERSON, PR AF COOPER, F HABIB, S KLUGER, Y MOTTOLA, E PAZ, JP ANDERSON, PR TI NONEQUILIBRIUM QUANTUM-FIELDS IN THE LARGE-N EXPANSION SO PHYSICAL REVIEW D LA English DT Article ID STRONG ELECTRIC-FIELD; BROWNIAN-MOTION; FINITE-TEMPERATURE; BACK-REACTION; GENERAL ENVIRONMENT; INTEGRAL APPROACH; PAIR PRODUCTION; BETA-FUNCTION; WAVE PACKET; REAL-TIME AB An effective action technique for the time evolution of a closed system eonsisting of one or more mean fields interacting with their quantum fluctuations is presented. By marrying large-N expansion methods to the Schwinger-Keldysh closed time path formulation of the quantum effective action, causality of the resulting equations of motion is ensured and a systematic, energy-conserving and gauge-invariant expansion about the quasiclassical mean field(s) in powers of 1/N developed. The general method is exposed in two specific examples, O(N) symmetric scalar lambdaPHI4 theory and quantum electrodynamics (QED) with N fermion fields. The lambdaPHI4 case is well suited to the numerical study of the real time dynamics of phase transitions characterized by a scalar order parameter. In QED the technique may be used to study the quantum nonequilibrium effects of pair creation in strong electric fields and the scattering and transport processes in a relativistic e+e- plasma. A simple renormalization scheme that makes practical the numerical solution of the equations of motion of these and other field theories is described. C1 WAKE FOREST UNIV,DEPT NEUROBIOL & BEHAV,WINSTON SALEM,NC 27109. RP COOPER, F (reprint author), LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. RI Paz, Juan/C-5947-2008 NR 49 TC 178 Z9 178 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 AUG 15 PY 1994 VL 50 IS 4 BP 2848 EP 2861 DI 10.1103/PhysRevD.50.2848 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100055 ER PT J AU MURAYAMA, H SUZUKI, H YANAGIDA, T YOKOYAMA, J AF MURAYAMA, H SUZUKI, H YANAGIDA, T YOKOYAMA, J TI CHAOTIC INFLATION AND BARYOGENESIS IN SUPERGRAVITY SO PHYSICAL REVIEW D LA English DT Note ID PHASE-TRANSITION; COSMOLOGICAL BARYON; UNIVERSE SCENARIO; NUMBER VIOLATION; DARK MATTER; FLUCTUATIONS; SCALE; SUPERSYMMETRY; OSCILLATIONS; BREAKING AB We propose a Kahler potential in supergravity which successfully accommodates chaotic inflation. This model can have a large gravitino mass without giving a large mass to squarks and sleptons, and thus is free from both the gravitino problem and entropy crisis. In this model baryogenesis takes places naturally, identifying the inflaton with a right-handed sneutrino with its mass M congruent-to 10(13) GeV, which is consistent with the COBE data and the Mikheyev-Smirnov-Wolfenstein solution to the solar neutrino problem. The model can also accommodate the matter content appropriate for the mixed dark matter scenario. C1 INST NAZL FIS NUCL,SEZ GENOVA,I-16146 GENOA,ITALY. TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN. KYOTO UNIV,YUKAWA INST THEORET PHYS,UJI RES CTR,UJI,KYOTO 611,JAPAN. RP MURAYAMA, H (reprint author), LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720, USA. RI Yanagida, Tsutomu/A-4394-2011; Murayama, Hitoshi/A-4286-2011 NR 42 TC 152 Z9 152 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 AUG 15 PY 1994 VL 50 IS 4 BP R2356 EP R2360 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA PC891 UT WOS:A1994PC89100002 ER PT J AU ALBRIGHT, CH NANDI, S AF ALBRIGHT, CH NANDI, S TI NEW APPROACH FOR THE CONSTRUCTION OF FERMION MASS MATRICES IN SO(10) SUPERSYMMETRIC GRAND UNIFIED THEORIES SO PHYSICAL REVIEW LETTERS LA English DT Article ID SOLAR-NEUTRINO DATA; INVARIANT FUNCTIONS; UNIFICATION; QUARK; ANSATZ; OSCILLATIONS; ELECTROWEAK; KAMIOKANDE; SPECTRUM AB A new procedure is developed which enables one to start from the quark and lepton mass and mixing data at the low scale and construct mass matrices which exhibit simple SO(10) structure at the supersymmetric-grand-unification scale. This approach is applied to the present data involving quark and charged lepton masses, the quark mixing matrix and the nonadiabatic solar neutrino and atmospheric neutrino depletion effects. In terms of just 12 model parameters suggested by the procedure for the 5 mass matrices, we can reproduce remarkably well all the masses and mixing parameters for the scenario considered. C1 FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510. OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078. RP ALBRIGHT, CH (reprint author), NO ILLINOIS UNIV,DEPT PHYS,DE KALB,IL 60115, USA. OI Albright, Carl/0000-0002-2252-6359 NR 45 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD AUG 15 PY 1994 VL 73 IS 7 BP 930 EP 933 DI 10.1103/PhysRevLett.73.930 PG 4 WC Physics, Multidisciplinary SC Physics GA PB988 UT WOS:A1994PB98800005 ER PT J AU BRANDENBURG, A BRODSKY, SJ KHOZE, VV MULLER, D AF BRANDENBURG, A BRODSKY, SJ KHOZE, VV MULLER, D TI ANGULAR-DISTRIBUTIONS IN THE DRELL-YAN PROCESS - A CLOSER LOOK AT HIGHER TWIST EFFECTS SO PHYSICAL REVIEW LETTERS LA English DT Article ID LEPTON-PAIR PRODUCTION; HADRON-HADRON COLLISIONS; QUANTUM CHROMODYNAMICS; ASYMPTOTIC-BEHAVIOR; EXCLUSIVE PROCESSES; QCD; FACTORIZATION; SCATTERING; MESONS; PIONS AB We calculate the angular distribution of the lepton produced in the Drell-Yan reaction taking into account pion bound state effects. This is particularly interesting since the standard perturbative QCD prediction is inconsistent with the data. We work in the kinematic region where one of the pion constituents goes far off shell, which allows us to treat the bound state problem perturbatively. We show that the angular distribution is very sensitive to the shape of the pion distribution amplitude. The model we discuss fits the data if we choose a two-humped pion distribution amplitude suggested by QCD sum rules. RP BRANDENBURG, A (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305, USA. OI Khoze, Valentin V/0000-0003-3006-4147 NR 26 TC 65 Z9 65 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 AUG 15 PY 1994 VL 73 IS 7 BP 939 EP 942 DI 10.1103/PhysRevLett.73.939 PG 4 WC Physics, Multidisciplinary SC Physics GA PB988 UT WOS:A1994PB98800007 ER EF