FN Thomson Reuters Web of Science™ VR 1.0 PT J AU FIROUZBAKHT, ML SCHLYER, DJ WOLF, AP AF FIROUZBAKHT, ML SCHLYER, DJ WOLF, AP TI CROSS-SECTION MEASUREMENTS FOR THE C-13(P,N)N-13 AND C-12(D,N)N-13 NUCLEAR-REACTIONS SO RADIOCHIMICA ACTA LA English DT Article DE EXCITATION FUNCTION; ABSOLUTE CROSS-SECTION; N-13 PRODUCTION; C-13(P,N)N-13, C-12(D,N)N-13; GAS TARGETS AB The absolute cross-sections and the thick target yields for the production of nitrogen-13 from the C-13(p,n)N-13 and the C-12(d,n)N-13 nuclear reactions are reported. The C-13(p,n)N-13 reaction was studied at energies from 1 to 33 MeV and the C-12(d,n)N-13 reaction was studied at energies from 1 to 23 MeV. All measurements were carried out in gaseous targets to ensure that the nitrogen-13 could be recovered quantitatively. RP FIROUZBAKHT, ML (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 17 TC 10 Z9 10 U1 0 U2 1 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 1 BP 1 EP 5 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GG393 UT WOS:A1991GG39300001 ER PT J AU MEYER, RE ARNOLD, WD CASE, FI OKELLEY, GD AF MEYER, RE ARNOLD, WD CASE, FI OKELLEY, GD TI SOLUBILITIES OF TC(IV) OXIDES SO RADIOCHIMICA ACTA LA English DT Article DE TECHNETIUM; SOLUBILITY; MIGRATION; HYDROLYSIS; GEOSPHERE AB Solubilities of Tc(IV) oxides have been determined in a number of solutions in the pH range 1 to 10. Technetium oxide was prepared by precipitation upon purified sand with a 30% excess of hydrazine and by electrodeposition. The oxide-covered sand was transferred to a small column, and the solutions to be studied were continuously cycled through the column. The electrodeposited oxide was formed on a platinum mesh electrode, and after careful rinsing, the solution to be studied was added to the electrolytic cell. The concentrations of total technetium and Tc(IV) species in the solutions were periodically determined by separating the oxidized and reduced technetium species using a solvent extraction procedure and counting the beta activity of the Tc-99 with a liquid scintillation counter. In basic solutions, the concentrations of Tc(IV) species in equilibrium with the oxide were in the range of 10(-8) to 10(-9) mol/l and tended to increase slightly with pH. In acid solutions the concentrations were much higher and were consistent with literature data on the hydrolytic species of Tc(IV). Solubilities appeared to reach a minimum in the intermediate pH range, and they were generally a factor of three or four lower for oxides electrodeposited in basic solutions compared to those for oxides electrodeposited from acid solution. The oxides were hydrated, and assuming a formula of TcO2.nH2O, the value of n was found to be 1.63 +/- 0.28. These data can be used to estimate Tc(IV) solubilities for cases where solubility limits transport of technetium in reducting environments of high-level waste repositories. RP MEYER, RE (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 17 TC 55 Z9 58 U1 4 U2 15 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 1 BP 11 EP 18 PG 8 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GG393 UT WOS:A1991GG39300003 ER PT J AU MEYER, RE ARNOLD, WD AF MEYER, RE ARNOLD, WD TI THE ELECTRODE POTENTIAL OF THE TC(IV)-TC(VII) COUPLE SO RADIOCHIMICA ACTA LA English DT Article DE TECHNETIUM; ELECTRODE POTENTIAL; POTENTIAL; ELECTROCHEMISTRY AB A redetermination of the standard potential for the Tc(VII)-Tc(IV) redox couple was completed because there is disagreement among published values of E0. Using electrodeposited technetium oxide, potentials were measured as a function of pH and technetium concentration. The slopes of the plots of electrode potential vs. pH and activity of TcO4- were measured to be 0.0773 +/- 0.0023 V/(pH unit) and 0.0211 +/- 0.0050 V/(log unit), respectively. These values agree with the theoretical values of 0.0788 V/(pH unit) and 0.0197 V/(log unit) within the standard deviations of our measurements. The value of E0 was determined to be 0.747 +/- 0.004 V. Within the limits of error, this agrees with the value E0 = 0.741 +/- 0.004 V determined by Cartledge and Smith [1]. RP MEYER, RE (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 10 TC 13 Z9 13 U1 3 U2 4 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 1 BP 19 EP 22 PG 4 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GG393 UT WOS:A1991GG39300004 ER PT J AU APPELMAN, EH DIAMOND, H HORWITZ, EP SULLIVAN, JC AF APPELMAN, EH DIAMOND, H HORWITZ, EP SULLIVAN, JC TI CESIUM FLUOROXYSULFATE, CSSO4F - A NOVEL REAGENT FOR THE RAPID OXIDATION OF AMERICIUM AT AMBIENT-TEMPERATURE AND ITS SEPARATION FROM CURIUM SO RADIOCHIMICA ACTA LA English DT Article DE AMERICIUM; CURIUM; FLUOROXYSULFATE; SO4F- ID AQUEOUS FLUOROXYSULFATE; DIOXIDE AB In the presence of Ag+ as a catalyst, the fluoroxysulfate ion, an ionic hypofluorite of the formula O3SOF-, rapidly oxidizes trivalent americium in 0.4-1 M HNO3 at ambient temperature to the +6 oxidation state, which can be readily extracted into a dodecane solution of the highly hindered dialkyl phosphoric acid extractant, bis(2,6-dimethyl-4-heptyl) phosphoric acid, HD(DIBM)P. This provides a facile separation of americium from curium in acidic solution. RP APPELMAN, EH (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 15 TC 5 Z9 5 U1 1 U2 3 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 2 BP 61 EP 64 PG 4 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GN641 UT WOS:A1991GN64100002 ER PT J AU FELMY, AR RAI, D MASON, MJ AF FELMY, AR RAI, D MASON, MJ TI THE SOLUBILITY OF HYDROUS THORIUM(IV) OXIDE IN CHLORIDE MEDIA - DEVELOPMENT OF AN AQUEOUS ION-INTERACTION MODEL SO RADIOCHIMICA ACTA LA English DT Article DE ION INTERACTION; THORIUM OXIDE; SOLUBILITY; AQUEOUS THERMODYNAMICS; TH4(+) (AQ) ID NATURAL-WATERS; HYDROLYSIS CONSTANTS; MINERAL SOLUBILITIES; SOLVENT-EXTRACTION; OXIDATION-STATES; METAL-IONS; ELECTROLYTES; THERMODYNAMICS; PREDICTION; 25-DEGREES-C AB The solubility of hydrous Th(IV) oxide was measured in NaCl solutions ranging in concentration from 0.6 to 3.0 M and in KCl at 0.6 M, over a wide range of hydrogen ion concentration (p(cH+) 3 to 11), and over equilibration times extending to more than one year. Our results show solubilities higher (by three to four orders of magnitude) than have been reported by other investigators in NaClO4 media. Our thermodynamic modeling calculations indicate that these differences in solubility are a result of differences in the ionic media and the ionic strength of the solutions. We have used the thermodynamic model of Pitzer and coworkers, which is valid to high ionic strengths, to analyze our data for solubility in both chloride and perchlorate media. The analysis required the use of specific ion-interaction parameters only for the bare Th4+ ion with the bulk anion Cl-. The final thermodynamic model gives a good representation of all of our solubility data in NaCl and KCl solutions below p(cH+) of approximately 7 as well as the solubility data in NaClO4 media and the osmotic data for ThCl4 solutions. RP FELMY, AR (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 34 TC 62 Z9 62 U1 0 U2 18 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 4 BP 177 EP 185 PG 9 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GQ561 UT WOS:A1991GQ56100003 ER PT J AU ORLANDINI, KA GAFFNEY, JS MARLEY, NA AF ORLANDINI, KA GAFFNEY, JS MARLEY, NA TI AN IMPROVED TECHNIQUE FOR THE RAPID ASSAY OF RADIUM ISOTOPES IN WATER SO RADIOCHIMICA ACTA LA English DT Article DE RADIOCHEMICAL MEASUREMENT OF RADIUM; ELECTRODEPOSITION OF RADIUM; WATER ANALYSIS OF RADIUM ID RA-226 AB An improved analytical method for the rapid assay of radium isotopes in water is described. After removal of alkaline earths and any U-234 by using a cation exchange column, radium is electrodeposited onto stainless steel discs and alpha-counted to determine Ra-226. The plating efficiency has been improved over previous methods by adding platinum in microgram amounts and ammonium oxalate to the plating solutions. Radium measurements at or near maximum permissible concentrations in water can be made on 10 - 50 ml of sample water within one day. RP ORLANDINI, KA (reprint author), ARGONNE NATL LAB,DIV ENVIRONM RES,BLDG 203,ARGONNE,IL 60439, USA. NR 10 TC 19 Z9 19 U1 0 U2 0 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 55 IS 4 BP 205 EP 207 PG 3 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA GQ561 UT WOS:A1991GQ56100007 ER PT J AU SULLIVAN, JC CHOPPIN, GR RAO, LF AF SULLIVAN, JC CHOPPIN, GR RAO, LF TI CALORIMETRIC STUDIES OF NPO2+ HYDROLYSIS SO RADIOCHIMICA ACTA LA English DT Article DE NEPTUNYL; HYDROLYSIS; ENTHALPY; CALORIMETRY; NP(V) ID COMPLEXATION AB The enthalpy change for the reaction NpO2(a)+ + OH- = NpO2OH(a) was found by calorimetric titration to have a value of -22.1 +/- 0.4 kJ mol-1 using a log-beta-101 value of 4.68 +/- 0.06. This gave an entropy change of 16 +/- 5 J K-1 mol-1. The solutions had 1.0 M [(CH3)4NCl] ionic strength at 298 K. These values are used to estimate the hydrolysis constant at elevated temperatures expected in the near field of nuclear waste repositories. C1 FLORIDA STATE UNIV,DEPT CHEM,TALLAHASSEE,FL 32306. RP SULLIVAN, JC (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 17 TC 12 Z9 13 U1 1 U2 1 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 54 IS 1 BP 17 EP 20 PG 4 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FF626 UT WOS:A1991FF62600002 ER PT J AU PRICE, KR AF PRICE, KR TI THE DEPTH DISTRIBUTION OF SR-90, CS-137, AND PU-239, PU-240 IN SOIL-PROFILE SAMPLES SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT PACIFICHEM CONF CY DEC, 1989 CL HI DE RADIONUCLIDES; SOIL PROFILE; ENVIRONMENTAL MONITORING AB A special study was conducted at the Hanford Site to investigate the depth distribution of Sr-90, Cs-137, and Pu-239 Pu-240 in soil at two locations. Duplicate sets of samples were collected at each location from the soil surface to a depth of 30 cm in increments of 2.5 cm. Results from an onsite location near a retired nuclear fuel reprocessing facility were compared to results from a background location upwind and distant from the Site. The study showed that, regardless of location, the top 5 cm of soil contained 51 to 74% of the Sr-90, 99% of the Cs-137, and 96% of the Pu-239,Pu-240. RP PRICE, KR (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 8 TC 24 Z9 26 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 54 IS 3 BP 145 EP 147 PG 3 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FU744 UT WOS:A1991FU74400008 ER PT J AU THOMPSON, JL AF THOMPSON, JL TI RADIONUCLIDE MIGRATION STUDIES AT THE NEVADA TEST SITE SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT PACIFICHEM CONF CY DEC, 1989 CL HI DE RADIONUCLIDE MIGRATION AB The United States government routinely tests nuclear devices at the Nevada Test Site (NTS) in southern Nevada. A significant amount of radioactive material exists underground at the NTS with no containers or engineered barriers to inhibit its subsequent migration. The Department of Energy has sponsored for many years a research program on radionuclide movement in the geologic media at this location. Goals of this research program are to measure the extent of movement of radionuclides away from underground explosion sites and to determine the mechanisms by which such movement occurs. This program has acquired significance in another aspect of nuclear waste management because of the Yucca Mountain Project. Yucca Mountain at the NTS is being intensively studied as the possible site for a mined repository for high level nuclear waste. The NTS provides a unique setting for field studies concerning radionuclide migration; there is the potential for greatly increasing our knowledge of the behavior of radioactive materials in volcanogenic media. This review summarizes some of the significant findings made under this research program at the NTS and identifies reports in which the details of the research may be found. RP THOMPSON, JL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,MS-J514,LOS ALAMOS,NM 87544, USA. NR 36 TC 4 Z9 4 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 54 IS 3 BP 149 EP 154 PG 6 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FU744 UT WOS:A1991FU74400009 ER PT J AU EFURD, DW ROENSCH, FR DRAKE, J PERRIN, RE AF EFURD, DW ROENSCH, FR DRAKE, J PERRIN, RE TI PRODUCTION, SEPARATION, AND PURIFICATION OF NP-236 AND PU-236 SO RADIOCHIMICA ACTA LA English DT Article DE NP-236; PU-236; ISOTOPE PRODUCTION AB A carrier-free chemical procedure has been developed to separate and purify nanogram quantities of the long-lived isomer of Np-236 (Np-236l, t1/2 = 1.2 x 10(5) a) and Pu-236 from gram quantities of uranium. A target containing 2 g of highly enriched U-235 was irradiated for 3960-mu-Ah with 20.1 MeV deuterons. A total of 4.45 x 10(13) atoms of Np-236l and 1.14 x 10(14) atoms of Pu-236 was recovered. RP EFURD, DW (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,MS-J514,LOS ALAMOS,NM 87545, USA. NR 7 TC 9 Z9 9 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 54 IS 4 BP 159 EP 161 PG 3 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FX867 UT WOS:A1991FX86700001 ER PT J AU NASH, KL AF NASH, KL TI THERMODYNAMICS OF FORMATION OF COMPLEXES BETWEEN THORIUM(IV) AND SUBSTITUTED METHANE DIPHOSPHONIC ACIDS IN ACIDIC SOLUTIONS SO RADIOCHIMICA ACTA LA English DT Article DE THORIUM; DIPHOSPHONIC ACIDS; STABILITY CONSTANTS; COMPLEXING AGENTS; PROTONATION CONSTANTS; SOLVENT EXTRACTION ID CRYSTAL AB The stability constants for thorium(IV) complexes with methane diphosphonic acid (MDPA), carboxymethanephosphonic acid (CMPA), vinylidine-1,1-diphosphonic acid (VDPA), and 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) have been determined using a solvent extraction distribution technique (25-degrees-C, 2.0 M Na/HClO4). The complexes are exceptionally strong even in solutions of moderate acidity (2 M acid). Various protonated complexes with metal:ligand stoichiometries up to 1:3 provide the best fit for the distribution data. Comparison of Th(IV)-L complex stability for the series malonic acid, CMPA, MDPA indicates approximately 10(2) stronger complexation for substitution of the first phosphonate group for carboxylate, and an additional 10(4) for the second phosphonate group. Substitution of an alpha-hydroxy group onto the gem-diphosphonate moiety (HEDPA) results in greater complex stability and higher M:L stoichiometry. Potential applications of these compounds in radioactive waste processing are suggested. RP NASH, KL (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 23 TC 36 Z9 36 U1 0 U2 1 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 54 IS 4 BP 171 EP 179 PG 9 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FX867 UT WOS:A1991FX86700005 ER PT J AU NITSCHE, H AF NITSCHE, H TI SOLUBILITY STUDIES OF TRANSURANIUM ELEMENTS FOR NUCLEAR WASTE-DISPOSAL - PRINCIPLES AND OVERVIEW SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE ACTINIDES; NEPTUNIUM; PLUTONIUM; AMERICIUM; SOLUBILITY; GROUNDWATER; NUCLEAR WASTE; RADIOACTIVE WASTE; MIGRATION; FAR FIELD ID HYDROUS OXIDE; CRYSTALLINITY; SPECIATION; IONS AB Data on radionuclide solubility can be important for the performance assessment of potential nuclear waste storage sites. Radionuclide solubility studies in groundwaters from a repository region will provide limits on radionuclide concentrations in these waters. Meaningful thermodynamically defined solubility studies must satisfy four criteria: (1) solution equilibrium conditions, (2) effective and complete phase separation, (3) a well-defined solid phase, and (4) knowledge of the speciation/oxidation state of the soluble species at equilibrium. The four criteria are discussed and illustrated with examples. Results are presented for laboratory solubility studies of Pu4+, NpO2+, and Am3+ in a groundwater from the Yucca Mountain region, Nevada, U.S.A. RP NITSCHE, H (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,MAIL STOP 70A-1115,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 31 TC 46 Z9 50 U1 0 U2 9 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 3 EP 8 PN 1 PG 6 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200002 ER PT J AU BEITZ, JV AF BEITZ, JV TI LASER-INDUCED FLUORESCENCE STUDIES OF CM-3+ COMPLEXES IN SOLUTION SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE COMPLEXATION; SPECIATION; PHOTOPHYSICS; LASER-INDUCED FLUORESCENCE ID RADIOLUMINESCENCE; CURIUM(III) AB Photophysical studies of complexed Cm3+ in solution have been carried out using a laser-induced fluorescence method. The luminescence decay rate of the first excited J = 7/2 state of Cm3+ was measured using carbonate, nitrate, and two extractant amino-carboxylic acids as complexing ligands in aqueous solution. Cm(ClO4)3 dissolved in methyl sulfoxide also was studied. Solvent deuteration provided insight into the dominant nonradiative luminescence quenching mechanism which was found to be electronic-to-vibrational energy transfer. Emission spectra of Cm3+ complexed by the various ligands studied are reported. Prior spectroscopic and photophysical studies of Cm3+ in solution are reviewed. RP BEITZ, JV (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 24 TC 50 Z9 50 U1 0 U2 6 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 35 EP 39 PN 1 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200008 ER PT J AU OKAJIMA, S REED, DT BEITZ, JV SABAU, CA BOWERS, DL AF OKAJIMA, S REED, DT BEITZ, JV SABAU, CA BOWERS, DL TI SPECIATION OF PU(VI) IN NEAR-NEUTRAL SOLUTIONS VIA LASER PHOTOACOUSTIC-SPECTROSCOPY SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE SPECIATION; PLUTONIUM(VI); HYDROLYSIS; LASER PHOTOACOUSTIC SPECTROSCOPY; RADIOACTIVE WASTE MANAGEMENT AB Absorption spectrometry and the high sensitivity technique of laser photoacoustic spectroscopy were utilized to investigate the hydrolysis of Pu(VI) in perchlorate media. Pu(VI) absorption bands in the 600 to 700 nm range were characterized as a function of pH in the pH = 1 - 7 regime. The formation constant of the 1:1 hydrolysis complex was determined as log-beta-11 = - 5.2 +/- 0.2 based on observed changes in the absorption bands noted. In the pH region investigated, four distinct species were identified and evidence for the existence of polynuclear species was obtained. RP OKAJIMA, S (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 13 TC 22 Z9 22 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 111 EP 117 PN 1 PG 7 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200018 ER PT J AU TRIAY, IR HOBART, DE MITCHELL, AJ NEWTON, TW OTT, MA PALMER, PD RUNDBERG, RS THOMPSON, JL AF TRIAY, IR HOBART, DE MITCHELL, AJ NEWTON, TW OTT, MA PALMER, PD RUNDBERG, RS THOMPSON, JL TI SIZE DETERMINATIONS OF PLUTONIUM COLLOIDS USING AUTOCORRELATION PHOTON SPECTROSCOPY SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE PLUTONIUM; COLLOID; SIZE; AUTOCORRELATION; LIGHT SCATTERING; SPECTROSCOPY AB Autocorrelation Photon Spectroscopy (APS) is a light-scattering technique utilized to determine the size distribution of colloidal suspensions. The capabilities of the APS methodology have been assessed by analyzing colloids of known sizes. Plutonium(IV) colloid samples were prepared by a variety of methods including: dilution; peptization; and auto-oxidation of Pu(III). The size of theses Pu colloids was analyzed using APS. The sizes determined for the Pu colloids studied varied from 1 to 370 nanometers. RP TRIAY, IR (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 7 TC 12 Z9 12 U1 0 U2 4 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 127 EP 131 PN 1 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200020 ER PT J AU TRIAY, IR MEIJER, A CISNEROS, MR MILLER, GG MITCHELL, AJ OTT, MA HOBART, DE PALMER, PD PERRIN, RE AGUILAR, RD AF TRIAY, IR MEIJER, A CISNEROS, MR MILLER, GG MITCHELL, AJ OTT, MA HOBART, DE PALMER, PD PERRIN, RE AGUILAR, RD TI SORPTION OF AMERICIUM IN TUFF AND PURE MINERALS USING SYNTHETIC AND NATURAL GROUNDWATERS SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE AMERICIUM; SORPTION; GROUNDWATER; TUFF; CLINOPTILOLITE; ROMANECHITE AB The distribution of Am between selected solid and liquid phases has been studied using initial Am-241 solutions with a molarity less than 1 x 10(-11). The synthetic and natural groundwaters used to prepare the Am solutions have pH values in the 7-8 range and a total alkalinity of approximately 1 mN which is mainly due to bicarbonate. Mass spectrometric isotope dilution was utilized to determine the amount of Am in the solution phase initially and after equilibrium was attained with the selected solid phases. Using this sensitive technique, 7 x 10(8) atoms of Am-241 were accurately measured. The results obtained indicate that the percent of Am lost to the walls of the container in the absence of geologic material varies from 35 to 84. The Am sorption coefficient determined is on the order of 10(3) ml/g for clinoptilolite, 10(4) ml/g for tuff consisting mainly of akali feldspar and cristobalite, and 10(5) ml/g for romanechite. RP TRIAY, IR (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 13 TC 14 Z9 16 U1 1 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 141 EP 145 PN 1 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200022 ER PT J AU POLZER, WL FUENTES, HR AF POLZER, WL FUENTES, HR TI FITTING A MODIFIED LANGMUIR ISOTHERM TO DATA FROM BATCH SORPTION EXPERIMENTS FOR RADIONUCLIDES ON TUFFS SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE SORPTION; SORPTION ISOTHERMS; MODIFIED LANGMUIR ISOTHERM; RADIONUCLIDE SORPTION; YUCCA MOUNTAIN TUFF AB Laboratory experiments have been performed on the sorption of radionuclides on tuff as site characterization information for the Yucca Mountain Project. This paper presents general observations on the results of curve-fitting of sorption data by a Modified Langmuir isotherm equation and the effects of experimental variables on their regressional analysis. Observations are specific to problems associated with fitting the isotherm, the calculation of isotherm parameters, and the significance of experimental variables such as replication and particle size. These observations are important in the design of laboratory experiments to ensure that collected data are adequate for effectively characterizing sorption of radionuclides on tuffs or other materials. C1 UNIV TEXAS,DEPT CIVIL ENGN,EL PASO,TX 79968. UNIV TEXAS,DEPT GEOL SCI,EL PASO,TX 79968. RP POLZER, WL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV EARTH & ENVIRONM SCI,LOS ALAMOS,NM 87545, USA. NR 6 TC 8 Z9 8 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 177 EP 179 PN 1 PG 3 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200027 ER PT J AU DELDEBBIO, JA AF DELDEBBIO, JA TI SORPTION OF STRONTIUM, SELENIUM, CADMIUM, AND MERCURY IN SOIL SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE SORPTION; METALS; RADIONUCLIDES; SOIL; DISTRIBUTION COEFFICIENTS; RETARDATION FACTORS AB Distribution coefficients (Kd) were determined for Sr2+, SeO32-, Cd2+ and Hg2+ in alluvium (near-surface soil), interbed sediment and basalt at the Idaho Chemical Processing Plant, a defense nuclear fuel reprocessing facility. The Freundlich isotherm equation was fitted to the sorption data. The sorption isotherms for Sr2+ and Cd2+ on alluvium and interbed sediment were approximately linear while those for SeO32- and Hg2+ were non-linear. Distribution coefficients for SeO32- and Hg2+ increased greatly with decreases in initial metal concentrations. The measured distribution coefficients (ml/g) were as follows: alluvium, Sr2+ 35 - 52, SeO32- 5.8 - 63, Cd2+ 4430 - 6410, Hg2+ 236 - 1910 interbed sediment, Sr2+ 110 - 186, SeO32- 4.9 - 17, Cd2+ 13,900 - 16,900, Hg2+ 81 - 998; basalt Sr2+ 1.1 - 2.7, SeO32- 0.29 - 3.4, Cd2+ 1300 - 3590, Hg2+ 9.5 - 171. Retardation factors (water velocity/solute velocity) calculated from Kd values have indicated that migration rates of SeO32- and Hg2+ in alluvium and interbed sediment vary inversely with initial metal concentrations. RP DELDEBBIO, JA (reprint author), WESTINGHOUSE IDAHO NUCL CO,POB 4000,IDAHO FALLS,ID 83403, USA. NR 4 TC 36 Z9 36 U1 0 U2 5 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 181 EP 186 PN 1 PG 6 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200028 ER PT J AU RUNDBERG, RS TRIAY, IR OTT, MA MITCHELL, AJ AF RUNDBERG, RS TRIAY, IR OTT, MA MITCHELL, AJ TI OBSERVATION OF TIME-DEPENDENT DISPERSION IN LABORATORY SCALE EXPERIMENTS WITH INTACT TUFF SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE RADIONUCLIDE; MIGRATION; DISPERSION; SORPTION ID POROUS-MEDIA AB The migration of radionuclides through intact tuff was studied using tuff from Yucca Mountain, Nevada. The tuff samples were both highly zeolitized ash-fall tuff from the Calico Hills and densely welded devitrified tuff from the Topopah Springs member of the Paintbrush tuff. Tritiated water and pertechnetate were used as conservative tracers. The sorbing tracers Sr-85, Cs-137, and Ba-133 were used with the devitrified tuff only. Greater tailing in the elution curves of the densely welded tuff samples was observed than could be fit by adjusting the dispersion coefficient in the conventional Advection Dispersion Equation, ADE. The elution of strontium was found to agree with the measured batch K(d) provided the dispersion was adjusted to a significantly larger value than observed for tritiated water. Similar agreement was achieved for cesium and barium using Gelhar's dispersion model for a stratified medium. These results will be discussed in the context of the relationship between the phenomenon of time dependent dispersion and the statistical properties of heterogeneous porous media. RP RUNDBERG, RS (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 24 TC 5 Z9 5 U1 0 U2 0 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 219 EP 228 PN 1 PG 10 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200033 ER PT J AU THOMPSON, JL GILMORE, JS AF THOMPSON, JL GILMORE, JS TI MIGRATION OF FISSION-PRODUCTS AT THE NEVADA TEST SITE - DETECTION WITH AN ISOTOPIC TRACER SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE RADIONUCLIDE MIGRATION; RH-101; RH-102 AB Researchers at Los Alamos National Laboratory are studying the migration of fission products away from explosion cavities formed by underground nuclear tests at the Nevada Test Site. In some cases, the isotopic composition of the fission products or activation products associated with a particular test are distinctive and we may identify them many years after the event. In this paper we describe a case in which we used rhodium isotopes to identify the source of radioactive material that had moved some 350 m from the explosion site. RP THOMPSON, JL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 3 TC 5 Z9 6 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 229 EP 231 PN 1 PG 3 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200034 ER PT J AU BUDDEMEIER, RW FINKEL, RC MARSH, KV RUGGIERI, MR REGO, JH SILVA, RJ AF BUDDEMEIER, RW FINKEL, RC MARSH, KV RUGGIERI, MR REGO, JH SILVA, RJ TI HYDROLOGY AND RADIONUCLIDE MIGRATION AT THE NEVADA TEST SITE SO RADIOCHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL CONF ON CHEMISTRY AND MIGRATION BEHAVIOUR OF ACTINIDES AND FISSION PRODUCTS IN THE GEOSPHERE CY NOV, 1989 CL MONTEREY, CA SP LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LAWRENCE LIVERMORE NATL LAB, EARTH SCI DEPT DE GROUNDWATER; VADOSE TRANSPORT; SOURCE TERM; H-3; CL-36; TC-99; SB-125; I-129; CS-137 AB We have compared the transport behavior in various environments of radionuclides originating from underground nuclear tests at the Nevada Test Site (NTS). Under saturated conditions in both alluvium and fractured volcanic rock, Cl-36, I-129, and H-3 exhibit mutually consistent and presumably conservative behavior during saturated flow. At the saturated fractured rock site, Tc-99 was conservative under most conditions, but was not present in samples containing high levels of iron oxyhydroxides formed in the well water. Sb-125 and Cs-137 transport was observed in fracture flow, but concentrations of Sb were somewhat attenuated and Cs was strongly retarded. Total activity levels of these nonconservative nuclides were not affected by the particulate phenomena that reduced Tc-99 levels. Studies of transport in unsaturated alluvium showed that neither Cl-36 nor I-129 were conservative relative to tritium. Observations of the relative transport behavior of the radionuclides as functions of both time and distance permit deductions about the nature of their source terms. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV NUCL CHEM,LIVERMORE,CA 94550. NR 11 TC 12 Z9 12 U1 0 U2 1 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 275 EP 282 PN 1 PG 8 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FD512 UT WOS:A1991FD51200041 ER PT J AU FRANCIS, AJ DODGE, CJ GILLOW, JB CLINE, JE AF FRANCIS, AJ DODGE, CJ GILLOW, JB CLINE, JE TI MICROBIAL TRANSFORMATIONS OF URANIUM IN WASTES SO RADIOCHIMICA ACTA LA English DT Article DE ANAEROBES; DISSOLUTION; IMMOBILIZATION; URANIUM; TOXIC METALS ID TRACE-METALS; DISSOLUTION AB Contamination of soils, water and sediments by radionuclides and toxic metals from the disposal or uranium processing wastes is a major concern. Although much is known of the physicochemical aspects of uranium, we have little information on the effects of microbial activities on the mobilization or immobilization of uranium in wastes. Sludge and sediment samples collected from the uranium processing facility at the Oak Ridge Y-12 Plant, Oak Ridge, Tennessee, contained high levels of uranium and toxic metals As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn. Uranium in the samples was associated to varying degree with the exchangeable, carbonate, iron oxide, organic, and inert fractions. Initial results in samples amended with carbon and nitrogen and incubated under anaerobic conditions indicate immobilization of uranium due to enhanced indigenous microbial activity. C1 MARTIN MARIETTA ENERGY SYST INC,OAK RIDGE,TN 37831. RP FRANCIS, AJ (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973, USA. NR 26 TC 34 Z9 34 U1 0 U2 1 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 311 EP 316 PN 2 PG 6 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FC398 UT WOS:A1991FC39800004 ER PT J AU RAWSON, SA WALTON, JC BACA, RG AF RAWSON, SA WALTON, JC BACA, RG TI MIGRATION OF ACTINIDES FROM A TRANSURANIC WASTE-DISPOSAL SITE IN THE VADOSE ZONE SO RADIOCHIMICA ACTA LA English DT Article DE ACTINIDE; AMERICIUM; PLUTONIUM; MIGRATION; VADOSE ZONE ID HYDRAULIC CONDUCTIVITY; MODEL AB Site characterization of a mixed-waste disposal site at the Idaho National Engineering Laboratory has confirmed release and migration into the vadose zone of chlorinated solvents and trace levels of 239+240-Pu and 241-Am within thirty-five years of disposal. A conceptual model of site geochemistry and its effects on actinide solubility and sorption was developed. Equilibrium geochemical codes were used to assess the chemical form of the actinides upon release from the site. Simulations of flow in a fractured medium were performed to estimate the distribution of the aqueous phase as a function of time. The simulations indicate that actinide migration in the aqueous phase to the observed depths is possible within a 10-30 year time frame. RP RAWSON, SA (reprint author), IDAHO NATL ENGN LAB,POB 1625,IDAHO FALLS,ID 83415, USA. NR 23 TC 5 Z9 5 U1 0 U2 0 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 477 EP 486 PN 2 PG 10 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FC398 UT WOS:A1991FC39800028 ER PT J AU ARTHUR, RC CRISCENTI, LJ AF ARTHUR, RC CRISCENTI, LJ TI ERROR EVALUATION IN REACTIVE-SOLUTE TRANSPORT CALCULATIONS SO RADIOCHIMICA ACTA LA English DT Article DE SOLUTE TRANSPORT; METASOMATISM; REMOBILIZATION ID ENERGIES; MINERALS AB An approach is illustrated for estimating errors that can result when geochemical processes are not considered in solute transport simulations. Coupled fluid transport and mass-transfer calculations were used to simulate the effects on Cs transport of zeolite metasomatism in a geologic setting analogous to the farfield environment near the candidate nuclear-waste repository at Yucca Mountain, Nevada. The results were compared to calculations using a constant Kd-attenuation model in which the zeolite reactions were not considered. Calculations using the mechanistic model predict a cycle of attenuation and remobilization of Cs as sorptive clinoptilolite is progressively replaced by less sorptive mordenite. The mobile zeolite-reaction boundary is not accounted for in the Kd-model calculations, which as a consequence significantly underpredict total Cs concentrations in the flow path. RP ARTHUR, RC (reprint author), PACIFIC NW LAB, BATTELLE BLVD,POB 999, RICHLAND, WA 99352 USA. NR 17 TC 0 Z9 0 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 507 EP 512 PN 2 PG 6 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FC398 UT WOS:A1991FC39800032 ER PT J AU CRISCENTI, LJ ARTHUR, RC AF CRISCENTI, LJ ARTHUR, RC TI THE CALCULATED EFFECTS OF ISOTHERMAL BOILING ON TUFF-WATER INTERACTIONS SO RADIOCHIMICA ACTA LA English DT Article DE TUFF; BOILING; YUCCA MOUNTAIN; REACTION PATH ID TRANSPORT; KINETICS; FLUID AB Heat generated from high-level nuclear waste emplaced in the candidate repository at Yucca Mountain, Nevada, may cause porewaters in the partially saturated host tuffs to boil. Open-system boiling, simulated as an isothermal process involving the irreversible exsolution of CO2 from the porewater, changes the fluid composition. Calculations using a kinetic reaction path model indicate that reactions between tuff and porewater altered by open-system boiling, result in different alteration mineral assemblages with different adsorption capacities. The changes in total volume of solid phases present along each reaction path are similar, suggesting that changes in fluid composition caused by boiling may not lead to differences in tuff permeability. RP CRISCENTI, LJ (reprint author), PACIFIC NW LAB, BATTELLE BLVD,POB 999, RICHLAND, WA 99352 USA. NR 16 TC 1 Z9 1 U1 1 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0033-8230 J9 RADIOCHIM ACTA JI Radiochim. Acta PY 1991 VL 52-3 BP 513 EP 517 PN 2 PG 5 WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology SC Chemistry; Nuclear Science & Technology GA FC398 UT WOS:A1991FC39800033 ER PT J AU NOWAKOWSKI, VA IVERY, G CASTRO, JR CHAR, DH LINSTADT, DE AHN, D PHILLIPS, TL QUIVEY, JM DECKER, M PETTI, PL COLLIER, JM AF NOWAKOWSKI, VA IVERY, G CASTRO, JR CHAR, DH LINSTADT, DE AHN, D PHILLIPS, TL QUIVEY, JM DECKER, M PETTI, PL COLLIER, JM TI UVEAL MELANOMA - DEVELOPMENT OF METASTASES AFTER HELIUM ION IRRADIATION SO RADIOLOGY LA English DT Article DE EYE, EFFECTS OF IRRADIATION ON; EYE, NEOPLASMS; LIVER NEOPLASMS, SECONDARY; MELANOMA ID PROTON-BEAM IRRADIATION; CHOROIDAL MELANOMA; COBALT PLAQUE; SURVIVAL RATES; CILIARY BODY; THERAPY; ENUCLEATION; RADIOTHERAPY; REGRESSION; RADIATION AB Forty-two (16%) of 261 patients with ocular melanoma who were treated with helium ions between January 1978 and November 1986 have developed metastatic disease. The time between start of helium ion treatment and recognition of metastatic disease ranged from 3 to 67 months (median, 27 months). The mean pretreatment tumor height in the patients with metastases was 7.7 mm. All 42 patients who developed metastatic disease have died. The median survival after diagnosis of metastatic disease was 5 months; the longest survival was 49 months. The most common site of metastasis was the liver (n = 34). Four (10%) of the 42 patients with metastases also had local recurrence of the tumor. Multivariate analysis identified three variables that predicted independently the development of metastases and lack of survival. These variables are anterior location of tumor (P = .027), tumor height greater than 5 mm (P = .02), and tumor diameter greater than 10 mm (P = .0075). C1 UNIV CALIF SAN FRANCISCO,MED CTR,DEPT OPHTHALMOL,SAN FRANCISCO,CA 94143. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV RES MED & RADIAT BIOPHYS,BERKELEY,CA 94720. NO CALIF CANC CTR,BELMONT,CA. RP NOWAKOWSKI, VA (reprint author), UNIV CALIF SAN FRANCISCO,MED CTR,DEPT RADIAT ONCOL,L-75,505 PARNASSUS,SAN FRANCISCO,CA 94143, USA. FU NCI NIH HHS [CA19138, CA21744]; PHS HHS [E107504] NR 24 TC 11 Z9 11 U1 0 U2 1 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0033-8419 J9 RADIOLOGY JI Radiology PD JAN PY 1991 VL 178 IS 1 BP 277 EP 280 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA EP117 UT WOS:A1991EP11700052 PM 1898536 ER PT B AU JARDINE, PM AF JARDINE, PM BE SPARKS, DL SUAREZ, DL TI MODELING NONEQUILIBRIUM REACTIONS OF INORGANIC SOLUTES IN SOIL COLUMNS SO RATES OF SOIL CHEMICAL PROCESSES SE SSSA SPECIAL PUBLICATIONS LA English DT Proceedings Paper CT SYMP ON RATES OF SOIL CHEMICAL PROCESSES CY OCT 17, 1989 CL LAS VEGAS, NV SP SOIL SCI SOC AMER RP JARDINE, PM (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37830, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOIL SCIENCE SOC AMER PI MADISON PA MADISON BN 0-89118-795-2 J9 SSSA SPEC PUBL PY 1991 VL 27 BP 255 EP 279 PG 25 WC Chemistry, Multidisciplinary; Engineering, Chemical; Geosciences, Multidisciplinary; Soil Science SC Chemistry; Engineering; Geology; Agriculture GA BU58K UT WOS:A1991BU58K00010 ER PT J AU BLACKMAN, HS GERTMAN, DI HAHN, HA AF BLACKMAN, HS GERTMAN, DI HAHN, HA TI MODELING THE INFLUENCE OF ERRORS OF COMMISSION ON SUCCESS PROBABILITY SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article AB A new method for modeling the influence of errors of commission is presented. This method extends the modeling done in human reliability assessment (HRA) event trees to more accurately represent the population of potential human errors associated with errors of commission. The modified HRA event trees are called commission event trees (COMETs). The fundamental difference between COMETs and HRA event trees is that COMETs model errors of commission and deal with the problem of cascading errors often encountered when errors are either intentional or laten in nature. An illustration of the application of COMET is given for an error of intention in a nuclear control scenario. RP BLACKMAN, HS (reprint author), IDAHO NATL ENGN LAB,HUMAN FACTORS RES UNIT,POB 1625,IDAHO FALLS,ID 83415, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PY 1991 VL 34 IS 2 BP 169 EP 179 DI 10.1016/0951-8320(91)90087-N PG 11 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA FN516 UT WOS:A1991FN51600004 ER PT J AU VESELY, WE AZARM, MA AF VESELY, WE AZARM, MA TI CONSIDERATIONS IN ESTABLISHING ALLOWED CUMULATIVE OUTAGE TIMES FOR COMPONENTS SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article AB The safety performance of operating nuclear power plants is strongly affected by the unavailability of safety systems designed to mitigate accident conditions. The unavailability of these safety systems during plant operation is controlled by plant technical specifications (TSs). At present, when the plant is operating, a safety component is permitted to be down for maintenance or repair only for a limited time specified by the plant TS and known as the allowable outage time (AOT). If the component is still down when the AOT limit is reached, then an action such as plant shutdown must be taken to rectify the situation. An alternative to a fixed AOT is to establish an allowed cumulative outage time for the component. In assigning an allowed cumulative outage time (ACOT) to a component for some operating time period, the component may undergo as many corrective maintenances and repairs as deemed necessary by plant personnel as long as the cumulative outage times does not exceed the ACOT. Implementation of an ACOT policy over present AOTs offers several flexibilities in managing component downtimes and controlling the associated safety impact. To evaluate the feasibility of establishing ACOTs as a potential regulatory alternative, the following issues need to be examined: (1) the capability of an ACOT process to control plant risk, (2) development of methods and approaches for selection of ACOT limits, (3) consideration of action statements that can be associated with an ACOT limit, and (4) implementation requirements of an ACOT as compared to an AOT. This paper provides a technical summary of an effort undertaken by Brookhaven National Laboratory to address the aforenoted issues under the auspices of the Nuclear Regulatory Commission. The paper identifies specific approaches for the determination of an ACOT limit and evaluates the potential benefits and potential problems for implementation of an ACOT system. C1 BROOKHAVEN NATL LAB,DEPT NUCL ENERGY,UPTON,NY 11973. RP VESELY, WE (reprint author), SCI APPLICAT INT CORP,655 METRO PL S,SUITE 745,DUBLIN,OH 43017, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PY 1991 VL 34 IS 2 BP 221 EP 233 DI 10.1016/0951-8320(91)90089-P PG 13 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA FN516 UT WOS:A1991FN51600006 ER PT J AU VESELY, WE AZARM, MA AF VESELY, WE AZARM, MA TI CONSIDERATIONS IN ESTABLISHING ACOTS FOR COMPONENTS - REPLY SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Letter C1 BROOKHAVEN NATL LAB,DEPT NUCL ENERGY,UPTON,NY 11973. RP VESELY, WE (reprint author), SCI APPLICAT INT CORP,655 METRO PL S,SUITE 745,DUBLIN,OH 43017, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PY 1991 VL 34 IS 2 BP 239 EP 240 DI 10.1016/0951-8320(91)90091-K PG 2 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA FN516 UT WOS:A1991FN51600008 ER PT J AU HAHN, HA BLACKMAN, HS GERTMAN, DI AF HAHN, HA BLACKMAN, HS GERTMAN, DI TI APPLYING SNEAK ANALYSIS TO THE IDENTIFICATION OF HUMAN ERRORS OF COMMISSION SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article AB Sneak analysis was adapted for use in identifying human errors of commission. Flow diagrams were developed to guide the analyst through a series of questions aimed at locating sneak paths, sneak indications, sneak labels, and sneak timing. An illustration of the application of this methodology in a nuclear environment is given. RP HAHN, HA (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,MS 2405,POB 1625,IDAHO FALLS,ID 83415, USA. NR 4 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PY 1991 VL 33 IS 2 BP 289 EP 300 DI 10.1016/0951-8320(91)90065-F PG 12 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA FB791 UT WOS:A1991FB79100010 ER PT J AU FINN, MG AF FINN, MG TI PERSONNEL SHORTAGE IN YOUR FUTURE SO RESEARCH-TECHNOLOGY MANAGEMENT LA English DT Article RP FINN, MG (reprint author), OAK RIDGE ASSOCIATED UNIV,LABOR & POLICY STUDIES PROGRAM,OAK RIDGE,TN 37830, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU INDUSTRIAL RESEARCH INST INC PI WASHINGTON PA 1550 M ST., NW, WASHINGTON, DC 20005 SN 0895-6308 J9 RES TECHNOL MANAGE JI Res.-Technol. Manage. PD JAN-FEB PY 1991 VL 34 IS 1 BP 24 EP 27 PG 4 WC Business; Engineering, Industrial; Management SC Business & Economics; Engineering GA ER496 UT WOS:A1991ER49600009 ER PT B AU MILLER, JC SMITH, DB AF MILLER, JC SMITH, DB BE PARKS, JE OMENETTO, N TI RESONANCE IONIZATION SPECTROSCOPY OF MOLECULAR CLUSTER USING PICOSECOND LASERS SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID 2-COLOR MULTIPHOTON IONIZATION; VANDERWAALS MOLECULES; NITRIC-OXIDE; NO; XENON RP MILLER, JC (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. NR 0 TC 1 Z9 1 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 163 EP 168 PG 6 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00039 ER PT B AU PAYNE, MG GARRETT, WR HART, RC DATSKOU, I WRAY, J AF PAYNE, MG GARRETT, WR HART, RC DATSKOU, I WRAY, J BE PARKS, JE OMENETTO, N TI LARGE COLLECTIVE LAMB SHIFTS IN HIGH-PRESSURE NOBLE-GASES SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID MULTI-PHOTON IONIZATION; 3RD-HARMONIC GENERATION; 3-PHOTON RESONANCE; MULTIPHOTON IONIZATION; FREQUENCY-SHIFT; EXCITATION; XE RP PAYNE, MG (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 209 EP 213 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00050 ER PT B AU YOUNG, JP SHAW, RW SMITH, DH AF YOUNG, JP SHAW, RW SMITH, DH BE PARKS, JE OMENETTO, N TI APPLICATIONS OF DIODE-LASERS TO RESONANCE IONIZATION MASS-SPECTROMETRY SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID SPECTROSCOPY; LANTHANUM RP YOUNG, JP (reprint author), OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 227 EP 230 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00054 ER PT B AU RAMSEY, JM WHITTEN, WB GOERINGER, DE BUCKLEY, BT AF RAMSEY, JM WHITTEN, WB GOERINGER, DE BUCKLEY, BT BE PARKS, JE OMENETTO, N TI COLLISIONAL AND ELECTRIC-FIELD IONIZATION OF LASER-PREPARED RYDBERG STATES IN AN ION TRAP MASS-SPECTROMETER SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID SPECTROSCOPY; ATOMS RP RAMSEY, JM (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 0 TC 2 Z9 2 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 301 EP 306 PG 6 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00072 ER PT B AU FEAREY, BL JOHNSON, SG NOGAR, NS MURRELL, MT MILLER, CM AF FEAREY, BL JOHNSON, SG NOGAR, NS MURRELL, MT MILLER, CM BE PARKS, JE OMENETTO, N TI THORIUM RIMS FOR GEOCHRONOLOGICAL AND GEOCHEMICAL APPLICATIONS SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID MASS-SPECTROMETRY; SYSTEMATICS; ELEMENTS RP FEAREY, BL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 311 EP 314 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00074 ER PT B AU CHANDLER, DW THOMAN, JW HESS, WP AF CHANDLER, DW THOMAN, JW HESS, WP BE PARKS, JE OMENETTO, N TI PHOTOFRAGMENT IMAGING - THE PHOTODISSOCIATION OF BROMOMETHANE, BROMOETHANE AND BROMOETHANOL SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID CH3I; CD3I; NM RP CHANDLER, DW (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 355 EP 358 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00084 ER PT B AU BUSHAW, BA MUNLEY, JT AF BUSHAW, BA MUNLEY, JT BE PARKS, JE OMENETTO, N TI ISOTOPICALLY SELECTIVE RIMS OF RARE RADIONUCLIDES BY DOUBLE-RESONANCE EXCITATION WITH SINGLE-FREQUENCY CW LASERS SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID RESOLUTION RP BUSHAW, BA (reprint author), BATTELLE MEM INST,PACIFIC NW LABS,RICHLAND,WA 99352, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 387 EP 392 PG 6 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00091 ER PT B AU FEAREY, BL JOHNSON, SG MILLER, CM AF FEAREY, BL JOHNSON, SG MILLER, CM BE PARKS, JE OMENETTO, N TI HIGH IONIZATION EFFICIENCY TECHNIQUES FOR CW RIMS SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID MASS-SPECTROMETRY; SPECTROSCOPY; RESOLUTION RP FEAREY, BL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 393 EP 396 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00092 ER PT B AU CHEN, CH PHILLIPS, RC MCCANN, MP AF CHEN, CH PHILLIPS, RC MCCANN, MP BE PARKS, JE OMENETTO, N TI LASER APPLICATIONS FOR HIGH-TC SUPERCONDUCTORS SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI RP CHEN, CH (reprint author), OAK RIDGE NATL LAB,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 425 EP 429 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00100 ER PT B AU YOUNG, CE SPIEGEL, DR PELLIN, MJ CALAWAY, WF COON, SR BURNETT, JW GRUEN, DM DAVIS, AM CLAYTON, RN AF YOUNG, CE SPIEGEL, DR PELLIN, MJ CALAWAY, WF COON, SR BURNETT, JW GRUEN, DM DAVIS, AM CLAYTON, RN BE PARKS, JE OMENETTO, N TI 3-COLOR RESONANCE IONIZATION OF SPUTTERED TI FOR ISOTOPIC ANALYSIS OF METEORITIC SAMPLES SO RESONANCE IONIZATION SPECTROSCOPY 1990 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Proceedings Paper CT 5TH INTERNATIONAL SYMP ON RESONANCE IONIZATION SPECTROSCOPY AND ITS APPLICATION CY SEP 16-21, 1990 CL VARESE, ITALY SP CNR, COMITATO NAZL SCI CHIM, ENTE NAZL ENERGIA ATOM, IST NAZL FIS NUCL, ENVIRONM INST, ELICAM, INSTRUMENT SOC AMER ITALY, LASER OPTRON, MICROCONTROLE, ATOM SCI ID OSMIUM; ATOMS RP YOUNG, CE (reprint author), ARGONNE NATL LAB,MSD,CHM,ARGONNE,IL 60439, USA. RI Pellin, Michael/B-5897-2008 OI Pellin, Michael/0000-0002-8149-9768 NR 0 TC 2 Z9 2 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA BRISTOL BN 0-85498-046-6 J9 INST PHYS CONF SER PY 1991 VL 114 BP 435 EP 438 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BT64D UT WOS:A1991BT64D00102 ER PT J AU HIRST, E SCHWEITZER, M YOURSTONE, E ETO, J AF HIRST, E SCHWEITZER, M YOURSTONE, E ETO, J TI TECHNICAL COMPETENCE OF INTEGRATED RESOURCE PLANS PREPARED BY ELECTRIC UTILITIES SO RESOURCES AND ENERGY LA English DT Article AB Integrated resource planning is a new way for electric utilities and state regulatory commissions to cost-effectively meet future energy-service needs. As part of this process, many utilities prepare long-term plans that integrate demand-side programs into the utility's mix of resources. This paper discusses guidelines for the preparation and review of utility reports on their resource plans, focusing on the technical competence of the underlying analysis. Load forecasts, demand-side resources, supply resources, integration of resources, and treatment of uncertainty are discussed. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP HIRST, E (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0572 J9 RESOUR ENERG PY 1991 VL 13 IS 1 BP 39 EP 55 DI 10.1016/0165-0572(91)90019-Y PG 17 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA FT587 UT WOS:A1991FT58700003 ER PT J AU GULDMANN, JM HANSON, DA AF GULDMANN, JM HANSON, DA TI NATURAL-GAS MARKET EXPANSION AND DELIVERY INFRASTRUCTURE COSTS - THE CASE OF NEW-ENGLAND SO RESOURCES AND ENERGY LA English DT Article; Proceedings Paper CT MEETING OF THE INTERNATIONAL ASSOC FOR ENERGY ECONOMICS CY OCT 16-18, 1989 CL LOS ANGELES, CA SP INT ASSOC ENERGY ECON AB A methodology is developed to assess the size of potential regional markets for natural gas and the resulting gas delivery infrastructure costs to be incurred in serving these markets, including distribution, transmission, storage and other operating costs. Its application to the New England region suggests that the optimal penetration strategy must involve new customers located in metropolitan areas endowed with distribution lines, and particularly large industrial and electric utility customers. However, connecting communities in remote, low-density rural areas, is, in mot cases, economically unfeasible. The results also suggest that price discrimination favoring residential customers is widespread, pointing to the need for changes in cost allocation and pricing practices. C1 ARGONNE NATL LAB,ARGONNE,IL 60439. RP GULDMANN, JM (reprint author), OHIO STATE UNIV,COLUMBUS,OH 43210, USA. NR 23 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0572 J9 RESOUR ENERG PY 1991 VL 13 IS 1 BP 57 EP 94 DI 10.1016/0165-0572(91)90020-4 PG 38 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA FT587 UT WOS:A1991FT58700004 ER PT J AU DAS, S LEE, R AF DAS, S LEE, R TI A COMPUTERIZED SYSTEM TO ESTIMATE POTENTIAL URANIUM RESOURCES SO RESOURCES AND ENERGY LA English DT Article AB The URAD system is the only comprehensive computerized database for information and estimates of the quantity of undiscovered uranium resources in the United States. The database includes subjective estimates of uranium endowment and geographic and geologic descriptions for approximately 700 area-specific assessments. The estimated quantity of undiscovered resources are represented in the form of probability distributions. This probabilistic approach makes the uncertainty about these resources explicit. RP DAS, S (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. NR 25 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-0572 J9 RESOUR ENERG PY 1991 VL 13 IS 2 BP 201 EP 215 DI 10.1016/0165-0572(91)90015-U PG 15 WC Energy & Fuels; Environmental Sciences; Environmental Studies SC Energy & Fuels; Environmental Sciences & Ecology GA FZ172 UT WOS:A1991FZ17200005 ER PT J AU LARSON, EM WAIDE, PA WONG, J AF LARSON, EM WAIDE, PA WONG, J TI HIGH-SPEED DIFFRACTOMETER-REACTION CHAMBER USING SYNCHROTRON RADIATION SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID RESOLVED X-RAY AB A high-speed diffractometer capable of recording diffraction patterns in the time scale of a few milliseconds using a synchrotron x-ray source is described. This instrument is designed to monitor fast, self-propagating high-temperature solid-state synthesis reactions in an inert atmosphere. A vertical theta-2-theta geometry is employed to collect maximum scattering from the horizontally polarized synchrotron beam. The detector system consists of two silicon photodiode arrays each of which can be integrated in as little time as 4 ms with shorter time frames possible if some pixels are skipped. Operation of the detectors, transfer and storage of data, and movement of the motors are controlled by an IBM-AT computer. The design, construction, and subsequent testing and performance at the Brookhaven National Synchrotron Light Source are discussed in detail. RP LARSON, EM (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94551, USA. NR 13 TC 15 Z9 16 U1 0 U2 0 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 JAN PY 1991 VL 62 IS 1 BP 53 EP 57 DI 10.1063/1.1142281 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA EQ607 UT WOS:A1991EQ60700008 ER PT J AU LEUNG, KN DEVRIES, GJ DIVERGILIO, WF HAMM, RW HAUCK, CA KUNKEL, WB MCDONALD, DS WILLIAMS, MD AF LEUNG, KN DEVRIES, GJ DIVERGILIO, WF HAMM, RW HAUCK, CA KUNKEL, WB MCDONALD, DS WILLIAMS, MD TI RF DRIVEN MULTICUSP H-ION SOURCE SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID EXTRACTION; BEAMS AB An rf driven multicusp source capable of generating 1-ms H- beam pulses with a repetition rate as high as 150 Hz has been developed. This source can be operated with a filament or other types of starter. There is almost no lifetime limitation and a clean plasma can be maintained for a long period of operation. It is demonstrated that rf power as high as 25 kW could be coupled inductively to the plasma via a glass-coated copper-coil antenna. The extracted H- current density achieved is about 200 mA/cm2. RP LEUNG, KN (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 13 TC 52 Z9 52 U1 1 U2 4 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 JAN PY 1991 VL 62 IS 1 BP 100 EP 104 DI 10.1063/1.1142315 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA EQ607 UT WOS:A1991EQ60700017 ER PT J AU DOWELL, LJ GILLIES, GT AF DOWELL, LJ GILLIES, GT TI ERRORS CAUSED BY BASE-LINE OFFSET AND NOISE IN THE ESTIMATION OF EXPONENTIAL LIFETIMES SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Note AB We have investigated errors and their sources in exponential-parameter estimation. This investigation was part of ongoing research in thermal metrology using the temperature-dependent fluorescence lifetime of rare-earth-doped ceramic phosphors. We have found that noise and baseline offset are the dominant sources of error in our experiments. In this note, we present the dependence of errors in exponential-lifetime estimates upon baseline offset and noise, as determined by the Monte Carlo simulation of Marquardt least-squared-error algorithms. These simulation results are validated by a Kullback-Leibler stochastic-distance model. We also demonstrate the necessity of estimating the baseline for accurate lifetime estimation. C1 UNIV VIRGINIA,DEPT NUCL ENGN & ENGN PHYS,FUNDAMENTAL MEASUREMENTS GRP,CHARLOTTESVILLE,VA 22901. RP DOWELL, LJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,MEE-S,MS E537,LOS ALAMOS,NM 87545, USA. NR 8 TC 27 Z9 27 U1 0 U2 2 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 JAN PY 1991 VL 62 IS 1 BP 242 EP 243 DI 10.1063/1.1142322 PG 2 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA EQ607 UT WOS:A1991EQ60700039 ER PT J AU TALMAGE, SS WALTON, BT AF TALMAGE, SS WALTON, BT TI SMALL MAMMALS AS MONITORS OF ENVIRONMENTAL CONTAMINANTS SO REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY LA English DT Review ID METALLIFEROUS FLUORSPAR TAILINGS; TRACE-ELEMENT POLLUTANTS; ALUMINUM REDUCTION PLANT; WASTE DISPOSAL AREA; LEAD CONCENTRATIONS; MICROTUS-PENNSYLVANICUS; METAL CONCENTRATIONS; PEROMYSCUS-LEUCOPUS; SOUTHEASTERN IDAHO; TISSUE-LEVELS C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. RP TALMAGE, SS (reprint author), OAK RIDGE NATL LAB,DIV HLTH & SAFETY,POB 2008,OAK RIDGE,TN 37831, USA. NR 120 TC 137 Z9 141 U1 1 U2 21 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0179-5953 J9 REV ENVIRON CONTAM T JI Rev. Environ. Contam. Toxicol. PY 1991 VL 119 BP 47 EP 108 PG 62 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA EQ274 UT WOS:A1991EQ27400002 PM 1992495 ER PT J AU GEE, GW KINCAID, CT LENHARD, RJ SIMMONS, CS AF GEE, GW KINCAID, CT LENHARD, RJ SIMMONS, CS TI RECENT STUDIES OF FLOW AND TRANSPORT IN THE VADOSE ZONE SO REVIEWS OF GEOPHYSICS LA English DT Review ID TRANSFER-FUNCTION MODEL; GOVERNING MULTIPHASE FLOW; SOIL HYDRAULIC-PROPERTIES; WETTABILITY LITERATURE SURVEY; TRANSIENT UNSATURATED FLOW; SATURATION-PRESSURE RELATIONS; KINEMATIC WAVE APPROXIMATION; ONE-DIMENSIONAL INFILTRATION; RATE RAINFALL INFILTRATION; SPATIALLY-VARIABLE FIELDS AB Vadose zone hydrology has received increased attention in recent years as a result of environmental concerns over potential groundwater pollution from buried wastes. Funding agencies have supported several comprehensive field studies designed to improve and test models that describe flow and transport of contaminants in heterogeneous field soils. Extensive data bases, containing measured hydraulic properties and observations of flow and transport, have been established and have been useful for model testing and comparison. Improvements in stochastic and deterministic modeling capabilities for the vadose zone have been made. The stochastic models provide a way to account for site variability. The improved deterministic models conserve mass and are computationally efficient. This paper discusses recent progress in the areas of model validation, stochastic and deterministic analysis, multiphase flow and transport, preferred pathway analysis, and other related topics. RP GEE, GW (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 202 TC 25 Z9 25 U1 1 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 8755-1209 J9 REV GEOPHYS JI Rev. Geophys. PY 1991 VL 29 SU S BP 227 EP 239 PN 1 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FX961 UT WOS:A1991FX96100032 ER PT J AU WANG, JSY AF WANG, JSY TI FLOW AND TRANSPORT IN FRACTURED ROCKS SO REVIEWS OF GEOPHYSICS LA English DT Review ID FLUID-DRIVEN FRACTURES; SHEAR-WAVE VSPS; SINGLE FRACTURE; SOLUTE TRANSPORT; CONTAMINANT TRANSPORT; POROUS-MEDIA; CHANNEL MODEL; THERMOHYDROLOGIC CONDITIONS; CAPILLARY-PRESSURE; SURFACE-ROUGHNESS AB Laboratory-scale studies of discrete fractures lead to better understanding of the relationship between flow properties and pore geometry. Field-scale studies of fracture networks test the validity of classical continuum approaches for transport processes in heterogeneous media. During 1987 to 1990, earth scientists have made significant advances in quantifying flow channeling and solute breakthrough in rough-walled fractures, analyzing transitions between fracture and matrix flows under multiphase conditions, and characterizing fracture networks with hydrological and geophysical studies. In this review, the effect of heterogeneity and the issue of scaling are discussed. Many common features and similar approaches can be identified in microcracks, discrete fractures, soil macropores, fractured rock masses, and heterogeneous reservoirs at different scales. RP WANG, JSY (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720, USA. NR 213 TC 20 Z9 20 U1 2 U2 16 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 8755-1209 J9 REV GEOPHYS JI Rev. Geophys. PY 1991 VL 29 SU S BP 254 EP 262 PN 1 PG 9 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FX961 UT WOS:A1991FX96100034 ER PT J AU GABLE, CW OCONNELL, RJ AF GABLE, CW OCONNELL, RJ TI TOMOGRAPHY, THE GEOID AND PLATE MOTIONS SO REVIEWS OF GEOPHYSICS LA English DT Review ID INFINITE-PRANDTL-NUMBER; LOW-VISCOSITY ZONE; TIME-DEPENDENT CONVECTION; RAYLEIGH-TAYLOR INSTABILITY; LARGE-SCALE STRUCTURE; CORE-MANTLE BOUNDARY; LOW-VELOCITY ZONE; HOT-SPOT TRACKS; THERMAL-CONVECTION; OCEANIC LITHOSPHERE C1 HARVARD UNIV,DEPT EARTH & PLANETARY SCI,CAMBRIDGE,MA 02138. RP GABLE, CW (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,INST GEOPHYS & PLANETARY PHYS,DIV EARTH & ENVIRONM SCI,MS K305,LOS ALAMOS,NM 87545, USA. RI Gable, Carl/B-4689-2011 NR 244 TC 1 Z9 1 U1 1 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 8755-1209 J9 REV GEOPHYS JI Rev. Geophys. PY 1991 VL 29 SU S BP 776 EP 782 PN 2 PG 7 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FX962 UT WOS:A1991FX96200034 ER PT J AU ONSAGER, TG THOMSEN, MF AF ONSAGER, TG THOMSEN, MF TI THE EARTHS FORESHOCK, BOW SHOCK, AND MAGNETOSHEATH SO REVIEWS OF GEOPHYSICS LA English DT Review ID QUASI-PARALLEL SHOCKS; HOT DIAMAGNETIC CAVITIES; UPSTREAM ENERGETIC IONS; SUPERCRITICAL COLLISIONLESS SHOCKS; ELECTRON VELOCITY DISTRIBUTIONS; NONCOPLANAR MAGNETIC-FIELDS; ALFVEN-WAVE NONLINEARITY; ALIGNED BEAMS UPSTREAM; LOWER HYBRID FREQUENCY; FLOW ANOMALY FORMATION RP ONSAGER, TG (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 183 TC 13 Z9 13 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 8755-1209 J9 REV GEOPHYS JI Rev. Geophys. PY 1991 VL 29 SU S BP 998 EP 1007 PN 2 PG 10 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FX962 UT WOS:A1991FX96200054 ER PT J AU BIRN, J AF BIRN, J TI THE GEOMAGNETIC TAIL SO REVIEWS OF GEOPHYSICS LA English DT Review ID PLASMA SHEET BOUNDARY; FIELD-ALIGNED CURRENTS; INTERPLANETARY MAGNETIC-FIELD; MAGNETOTAIL CURRENT SHEET; LARGE-SCALE RESPONSE; STEADY MAGNETOSPHERIC CONVECTION; TRAVELING COMPRESSION REGIONS; NEAR-EARTH MAGNETOTAIL; SUBSTORM GROWTH-PHASE; KINETIC ALFVEN WAVES RP BIRN, J (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 262 TC 11 Z9 11 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 8755-1209 J9 REV GEOPHYS JI Rev. Geophys. PY 1991 VL 29 SU S BP 1049 EP 1065 PN 2 PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA FX962 UT WOS:A1991FX96200059 ER PT J AU PHANTHIEN, N GRAHAM, AL AF PHANTHIEN, N GRAHAM, AL TI A NEW CONSTITUTIVE MODEL FOR FIBER SUSPENSIONS - FLOW PAST A SPHERE SO RHEOLOGICA ACTA LA English DT Article DE FIBER SUSPENSIONS; CONSTITUTIVE EQUATION; FLOW PAST A SPHERE; BOUNDARY-ELEMENT METHOD ID RHEOLOGICAL PROPERTIES; VISCOELASTIC FLUIDS; RODLIKE PARTICLES; NEWTONIAN FLUID; VISCOSITY; DRAG; EQUATION; LIQUIDS; FIBERS; STRESS AB A new phenomenological constitutive equation for homogeneous suspensions of macrosized fibres is proposed. In the model, the local averaged orientation of the fibres is represented by a director field, which evolves in time in a manner similar to the rotation of a prolate spheroid. The stress is linear in the strain rate, but the viscosity is a fourth-order tensor that is directly related to the director field. In the limit of low-volume fractions of fibres, the model reduces properly to the leading terms of the constitutive equation for dilute suspensions of spheroids. The model has three parameters: the aspect ratio R of the fibres, the volume fraction PHI, and ALPHA, which plays the role of the maximum-volume fraction of the fibres. Experimental shear data are used to estimate the parameter ALPHA, and the resulting model is used in a boundary-element program to study the flow past a sphere placed at the centre line of a cylinder for the whole range of volume fractions from 0.01 to near maximum volume fraction. The agreement with experimental data from Milliken et al. [1] is good. C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV MECH & ELECTR ENGN,LOS ALAMOS,NM 87544. RP PHANTHIEN, N (reprint author), UNIV SYDNEY,DEPT MECH ENGN,SYDNEY,NSW 2006,AUSTRALIA. RI Phan-Thien, Nhan/I-4705-2012 NR 45 TC 51 Z9 51 U1 0 U2 3 PU DR DIETRICH STEINKOPFF VERLAG PI BERLIN 33 PA C/O SPRINGER-VERLAG, HEIDELBERGER PLATZ 3, 1000 BERLIN 33, GERMANY SN 0035-4511 J9 RHEOL ACTA JI Rheol. Acta PD JAN-FEB PY 1991 VL 30 IS 1 BP 44 EP 57 DI 10.1007/BF00366793 PG 14 WC Mechanics SC Mechanics GA FD918 UT WOS:A1991FD91800006 ER PT J AU NUEL, L DENN, MM AF NUEL, L DENN, MM TI EFFECT OF PROCESSING AND PARTICULATE FILLERS ON THE RHEOLOGY OF A NEMATIC POLYMER MELT SO RHEOLOGICA ACTA LA English DT Article DE LIQUID CRYSTAL; NEMATIC POLYMER; VECTRA; FILLED POLYMER; CARBON BLACK; CALCIUM CARBONATE ID CARBON-BLACK AB Processing of a nematic HBA/HNA polymer melt increases the capillary diameter dependence of the viscosity and induces structural changes which are evident in oscillatory shear, but cannot be characterized by DSC. The effect of 6-mu-m calcium carbonate particulate fillers is to increase the viscosity uniformly. Low concentrations of sub-micron carbon black particles cause an unexplained viscosity minimum in a large (30-mil) capillary. C1 UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. NR 10 TC 16 Z9 16 U1 0 U2 2 PU DR DIETRICH STEINKOPFF VERLAG PI BERLIN 33 PA C/O SPRINGER-VERLAG, HEIDELBERGER PLATZ 3, 1000 BERLIN 33, GERMANY SN 0035-4511 J9 RHEOL ACTA JI Rheol. Acta PD JAN-FEB PY 1991 VL 30 IS 1 BP 65 EP 70 DI 10.1007/BF00366795 PG 6 WC Mechanics SC Mechanics GA FD918 UT WOS:A1991FD91800008 ER PT J AU BAK, P CHEN, K AF BAK, P CHEN, K TI SELF-ORGANIZED CRITICALITY SO SCIENTIFIC AMERICAN LA English DT Article ID EARTHQUAKES C1 SIMON FRASER UNIV,BURNABY V5A 1S6,BC,CANADA. RP BAK, P (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 6 TC 295 Z9 300 U1 2 U2 49 PU SCI AMERICAN INC PI NEW YORK PA 415 MADISON AVE, NEW YORK, NY 10017 SN 0036-8733 J9 SCI AM JI Sci.Am. PD JAN PY 1991 VL 264 IS 1 BP 46 EP 53 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EP163 UT WOS:A1991EP16300007 ER PT J AU KAMAT, SV ROLLETT, AD HIRTH, JP AF KAMAT, SV ROLLETT, AD HIRTH, JP TI PLASTIC-DEFORMATION IN A1-ALLOY MATRIX-ALUMINA PARTICULATE COMPOSITES SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID CRACK; FRONT C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. WASHINGTON STATE UNIV,PULLMAN,WA 99164. RP KAMAT, SV (reprint author), DEF MET RES LAB,HYDERABAD 500258,INDIA. RI Rollett, Anthony/A-4096-2012 OI Rollett, Anthony/0000-0003-4445-2191 NR 19 TC 76 Z9 77 U1 1 U2 4 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 JAN PY 1991 VL 25 IS 1 BP 27 EP 32 DI 10.1016/0956-716X(91)90348-5 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA EQ988 UT WOS:A1991EQ98800006 ER PT J AU CHARLOT, LA BRIMHALL, JL THOMAS, LE BRUEMMER, SM HIRTH, JP AF CHARLOT, LA BRIMHALL, JL THOMAS, LE BRUEMMER, SM HIRTH, JP TI TWINNING RELATIONSHIP IN BE12NB SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 WASHINGTON STATE UNIV, PULLMAN, WA 99164 USA. RP CHARLOT, LA (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 8 TC 4 Z9 4 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 JAN PY 1991 VL 25 IS 1 BP 99 EP 103 DI 10.1016/0956-716X(91)90361-4 PG 5 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA EQ988 UT WOS:A1991EQ98800019 ER PT J AU PANKOVE, JI JOHNSON, NM AF PANKOVE, JI JOHNSON, NM TI INTRODUCTION TO HYDROGEN IN SEMICONDUCTORS SO SEMICONDUCTORS AND SEMIMETALS LA English DT Article ID SINGLE-CRYSTAL SILICON; SHALLOW-ACCEPTOR IMPURITIES; AMORPHOUS SILICON; ATOMIC-HYDROGEN; GLOW-DISCHARGE; NEUTRALIZATION C1 SOLAR ENERGY RES INST, GOLDEN, CO 80401 USA. XEROX CORP, PALO ALTO RES CTR, PALO ALTO, CA 94304 USA. RP UNIV COLORADO, CTR OPTOELECTR COMP SYST, DEPT ELECT & COMP ENGN, CAMPUS BOX 425, BOULDER, CO 80309 USA. NR 30 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Sdemimet. PY 1991 VL 34 BP 1 EP 15 PG 15 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA FU865 UT WOS:A1991FU86500001 ER PT J AU SEAGER, CH AF SEAGER, CH TI HYDROGENATION METHODS SO SEMICONDUCTORS AND SEMIMETALS LA English DT Article ID SINGLE-CRYSTAL SILICON; GRAIN-BOUNDARIES; POLYCRYSTALLINE SILICON; ELECTRICAL-PROPERTIES; ANNEALING KINETICS; BOMBARDED SILICON; ION IMPLANTATION; OXIDIZED SILICON; ATOMIC-HYDROGEN; BORON ACCEPTORS RP SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. NR 62 TC 4 Z9 4 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Sdemimet. PY 1991 VL 34 BP 17 EP 33 PG 17 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA FU865 UT WOS:A1991FU86500002 ER PT J AU PANKOVE, JI AF PANKOVE, JI TI HYDROGENATION OF DEFECTS IN CRYSTALLINE SILICON SO SEMICONDUCTORS AND SEMIMETALS LA English DT Article ID AMORPHOUS SILICON; GRAIN-BOUNDARIES; PASSIVATION; FILMS C1 SOLAR ENERGY RES INST, GOLDEN, CO 80401 USA. RP UNIV COLORADO, CTR OPTOELECTR COMP SYST, DEPT ELECT & COMP ENGN, CAMPUS BOX 425, BOULDER, CO 80309 USA. NR 16 TC 3 Z9 3 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Sdemimet. PY 1991 VL 34 BP 35 EP 47 PG 13 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA FU865 UT WOS:A1991FU86500003 ER PT J AU PANKOVE, JI AF PANKOVE, JI TI NEUTRALIZATION OF SHALLOW ACCEPTORS IN SILICON SO SEMICONDUCTORS AND SEMIMETALS LA English DT Article ID SINGLE-CRYSTAL SILICON; ATOMIC-HYDROGEN; BORON; COMPENSATION; DEFECTS; PLASMA; ALLOYS C1 SOLAR ENERGY RES INST, GOLDEN, CO 80401 USA. RP UNIV COLORADO, CTR OPTOELECTR COMP SYST, DEPT ELECT & COMP ENGN, CAMPUS BOX 425, BOULDER, CO 80309 USA. NR 27 TC 3 Z9 3 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Sdemimet. PY 1991 VL 34 BP 91 EP 111 PG 21 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA FU865 UT WOS:A1991FU86500006 ER PT J AU HALLER, EE AF HALLER, EE TI HYDROGEN-RELATED PHENOMENA IN CRYSTALLINE GERMANIUM SO SEMICONDUCTORS AND SEMIMETALS LA English DT Article ID HIGH-PURITY GERMANIUM; PHOTOTHERMAL IONIZATION SPECTROSCOPY; ULTRA-PURE GERMANIUM; ACCEPTOR COMPLEXES; TUNNELING HYDROGEN; BORON ACCEPTOR; SILICON; SHALLOW; SEMICONDUCTORS; DONOR C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, DIV ENGN, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, DIV MAT & CHEM SCI, BERKELEY, CA 94720 USA. RP UNIV CALIF BERKELEY, DEPT MAT SCI & MINERAL ENGN, BERKELEY, CA 94720 USA. NR 71 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Sdemimet. PY 1991 VL 34 BP 351 EP 380 PG 30 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA FU865 UT WOS:A1991FU86500011 ER PT J AU PICRAUX, ST DOYLE, BL TSAO, JY AF PICRAUX, ST DOYLE, BL TSAO, JY TI STRUCTURE AND CHARACTERIZATION OF STRAINED-LAYER SUPERLATTICES SO SEMICONDUCTORS AND SEMIMETALS LA English DT Review ID X-RAY-DIFFRACTION; NONUNIFORM CRYSTALLINE FILMS; ENERGY ELECTRON-DIFFRACTION; QUANTUM WELL STRUCTURES; ROCKING CURVE ANALYSIS; SUPER-LATTICES; RUTHERFORD BACKSCATTERING; INTENSITY OSCILLATIONS; CHANNELING ANALYSIS; RAMAN-SCATTERING C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 78 TC 18 Z9 18 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0080-8784 J9 SEMICONDUCT SEMIMET JI Semicond. Semimet. PY 1991 VL 33 BP 139 EP 222 PG 84 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA MJ018 UT WOS:A1991MJ01800003 ER PT J AU MCINTEER, BB MILLS, TR AF MCINTEER, BB MILLS, TR TI SUPERHEAVY ISOTOPE ENRICHMENT USING A CARBON ISOTOPE ENRICHMENT PLANT SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article ID SEARCH; PARTICLES AB A C-13 isotope distillation separation plant was used to search fornaturally-occurring superheavy isotopes. Superheavy (X-) isotopes of carbon in CO would be only slightly less volatile than the normal (CO)-C-12-O-16. Over 100,000 mol CO were passed through the distallation columns without product withdrawl during the experiment. Following cessation of flows, 201 gas samples were collected from the bottom of the high enrichment column. An argon impurity in the CO provided a "wedge" to enrich X- isotopes at the CO/Ar interface in the column. Carbon isotopic compositions were used to calculate which samples might contain the superheavy isotopes. Enrichments of X- isotope concentration of approximately 10(5) were obtained in several 0.1 mol samples, which were analyzed for the existence of X- isotopes at another laboratory. A limited amount of extremely pure (CO)-C-13 was produced as a side benefit. RP MCINTEER, BB (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 14 TC 0 Z9 0 U1 0 U2 1 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 1991 VL 26 IS 5 BP 607 EP 617 DI 10.1080/01496399108049903 PG 11 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA FW828 UT WOS:A1991FW82800002 ER PT J AU CHRISWELL, CD SHAH, ND MARKUSZEWSKI, R AF CHRISWELL, CD SHAH, ND MARKUSZEWSKI, R TI COUNTERCURRENT WASHING OF PITTSBURGH NO-8 COAL AFTER LEACHING WITH MOLTEN MIXTURES OF SODIUM AND POTASSIUM HYDROXIDES SO SEPARATION SCIENCE AND TECHNOLOGY LA English DT Article AB Molten caustic leaching is an advanced chemical coal-cleaning process which results in the removal of over 90% of the sulfur and ash from coal. One of the steps in this process is the water washing of caustic-leached coals to remove unreacted caustic and impurities released by reactions with the molten caustic. A countercurrent procedure, designed for efficient washing with minimal water consumption, has been evaluated in the present work. A Pittsburgh No. 8 coal was leached with a one-to-one mixture of molten sodium and potassium hydroxides, and the resulting coal-caustic cake was washed using this countercurrent procedure. The countercurrent washing did result in recovery of caustic at predicted concentrations, and a relatively ash-free and sulfur-free coal was the final product. However, significant problems occurred during the countercurrent washing, all of which could be linked with the formation of a massive precipitate of carbonates from the alkaline process streams. The mass of the precipitate retained fluids and thus led to far lower than predicted recoveries of caustic solutions. The precipitate also caused a significant decrease in filtration rates. RP CHRISWELL, CD (reprint author), IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,FOSSIL ENERGY PROGRAM,AMES,IA 50011, USA. NR 15 TC 2 Z9 2 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0149-6395 J9 SEPAR SCI TECHNOL JI Sep. Sci. Technol. PY 1991 VL 26 IS 7 BP 961 EP 975 DI 10.1080/01496399108050507 PG 15 WC Chemistry, Multidisciplinary; Engineering, Chemical SC Chemistry; Engineering GA GX277 UT WOS:A1991GX27700004 ER PT J AU KALNINS, EG MILLER, W TRATNIK, MV AF KALNINS, EG MILLER, W TRATNIK, MV TI FAMILIES OF ORTHOGONAL AND BIORTHOGONAL POLYNOMIALS ON THE N-SPHERE SO SIAM JOURNAL ON MATHEMATICAL ANALYSIS LA English DT Article DE MULTIVARIABLE ORTHOGONAL AND BIORTHOGONAL POLYNOMIALS; THE N-SPHERE AB The Laplace-Beltrami eigenvalue equation H-PHI = lambda-PHI on the n-sphere is studied, with an added vector potential term motivated by the differential equations for the polynomial Lauricella functions F(A). The operator H is self-adjoint with respect to the natural inner product induced on the sphere and, in certain special coordinates, it admits a spectral decomposition with eigenspaces composed entirely of polynomials. The eigenvalues are degenerate but the degeneracy can be broken through use of the possible separable coordinate systems on the n-sphere. Then a basis for each eigenspace can be selected in terms of the simultaneous eigenfunctions of a family of commuting second-order differential operators that also commute with H. The results provide a multiplicity of n-variable orthogonal and biorthogonal families of polynomials that generalize classical results for one and two variable families of Jacobi polynomials on intervals, disks, and paraboloids. C1 UNIV MINNESOTA,SCH MATH,MINNEAPOLIS,MN 55455. UNIV MINNESOTA,INST MATH & APPLICAT,MINNEAPOLIS,MN 55455. UNIV CALIF LOS ALAMOS SCI LAB,CTR NONLINEAR STUDIES & T7,DIV THEORET,LOS ALAMOS,NM 87545. RP KALNINS, EG (reprint author), UNIV WAIKATO,DEPT MATH,HAMILTON,NEW ZEALAND. NR 26 TC 34 Z9 34 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0036-1410 J9 SIAM J MATH ANAL JI SIAM J. Math. Anal. PD JAN PY 1991 VL 22 IS 1 BP 272 EP 294 DI 10.1137/0522017 PG 23 WC Mathematics, Applied SC Mathematics GA EV794 UT WOS:A1991EV79400017 ER PT J AU WORLEY, PH AF WORLEY, PH TI LIMITS ON PARALLELISM IN THE NUMERICAL-SOLUTION OF LINEAR PARTIAL-DIFFERENTIAL EQUATIONS SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE LIMITS ON PARALLELISM; ALGORITHM-INDEPENDENT COMPLEXITY BOUNDS; LINEAR PARTIAL DIFFERENTIAL EQUATIONS; NUMERICAL APPROXIMATION; PARALLEL COMPLEXITY; PARALLEL EXECUTION TIME; PROBLEM SCALING AB The problem considered is that of approximating the solution of a linear scalar partial differential equation (PDE) at one or more locations in its domain. A lower bound on the amount of data required to satisfy a given error tolerance in the approximation is described. Using this bound, a lower bound on the execution time of parallel algorithms that approximate the solution is derived. The lower bound on the execution time has the form alpha.f(+).log2-epsilon-1, where alpha is a problem-dependent constant, f(+) is a measure of the speed of floating point arithmetic, and epsilon is an upper bound on the error. Thus, when alpha > 0, the execution time increases as epsilon decreases, independent of the number of processors, the interconnection topology, and the algorithm used. Lower bounds on the execution time are also given for the cases where the interconnection network or the number of processors is specified. Recent research has established that it is often possible to use a large number of processors efficiently when calculating the numerical solution of a PDE if the problem is sufficiently large. In this paper, it is shown that increasing the size of such a problem will usually come at the cost of increasing the execution time. Two examples are described that verify this conclusion, an algorithm-independent analysis of an elliptic PDE and an analysis of a specific algorithm for the approximation of a hyperbolic PDE. RP WORLEY, PH (reprint author), OAK RIDGE NATL LAB,MATH SCI SECT,POB 2009,OAK RIDGE,TN 37831, USA. NR 20 TC 8 Z9 8 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 1 EP 35 DI 10.1137/0912001 PG 35 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600001 ER PT J AU BISCHOF, CH AF BISCHOF, CH TI A PARALLEL QR FACTORIZATION ALGORITHM WITH CONTROLLED LOCAL PIVOTING SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE QR FACTORIZATION; COLUMN PIVOTING; CONTROLLED PIVOTING; INCREMENTAL CONDITION ESTIMATION; DISTRIBUTED ARCHITECTURE; PARALLEL ALGORITHMS ID WY REPRESENTATION; PRODUCTS; MATRICES AB This paper presents a new version of the Householder algorithm with column pivoting for computing a QR factorization that identifies rank and range space of a given matrix. The standard pivoting technique is not well suited for parallel computation, since it requires synchronization at every step in order to choose the next pivot column. In contrast, a restricted pivoting scheme that restricts the choice of pivot columns and avoids this synchronization constraint is employed. Incremental condition estimation is used to assess the effect that the addition of a candidate pivot column would have on the condition number of the matrix being generated. This safeguard ensures that this local strategy selects pivot columns that make sense in the global context of the computation. The resulting algorithm is well suited for implementation on a parallel machine, in particular, a MIMD machine with distributed memory. Simulations demonstrate that the numerical behavior of the restricted pivoting strategy is comparable to the traditional global pivoting strategy. Implementation results of the QR factorization algorithm without pivoting and with local and traditional pivoting on the Intel iPSC/1 and iPSC/2 hypercubes show that our scheme about halves the extra time required for pivoting. C1 CORNELL UNIV,ITHACA,NY 14853. RP BISCHOF, CH (reprint author), ARGONNE NATL LAB,DIV MATH & COMP SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Bischof, Christian/D-2897-2009 NR 32 TC 17 Z9 17 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 36 EP 57 DI 10.1137/0912002 PG 22 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600002 ER PT J AU BROWN, PN AF BROWN, PN TI A THEORETICAL COMPARISON OF THE ARNOLDI AND GMRES ALGORITHMS SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE LINEAR SYSTEMS; ITERATIVE METHODS; STAGNATION; BREAKDOWN ID NONSYMMETRIC LINEAR-SYSTEMS; KRYLOV SUBSPACE METHODS; INDEFINITE; EQUATIONS AB Two recently developed Krylov methods for solving linear systems are Arnoldi's method and the Generalized Minimum Residual (GMRES) method. The GMRES method has been considered superior to Arnoldi's method due in part to the fact that GMRES never breaks down in the way Arnoldi's algorithm can. However, it is shown that there is a relationship between breakdowns in the two methods. Specifically, it is shown that GMRES does exhibit breakdowns very similar to that of Arnoldi, often referred to as the "stagnation" of GMRES. A relationship between the norms of the residuals for Arnoldi and GMRES is also given which shows exactly how much larger the residual norm for Arnoldi is than that for GMRES. In general, the results in the paper suggest that if one of the methods performs poorly on a particular problem, then so will the other. RP BROWN, PN (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV COMP & MATH RES,L-316,LIVERMORE,CA 94550, USA. NR 12 TC 97 Z9 103 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 58 EP 78 DI 10.1137/0912003 PG 21 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600003 ER PT J AU BADEN, SB AF BADEN, SB TI PROGRAMMING ABSTRACTIONS FOR DYNAMICALLY PARTITIONING AND COORDINATING LOCALIZED SCIENTIFIC CALCULATIONS RUNNING ON MULTIPROCESSORS SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE MULTIPROCESSORS; DYNAMIC LOAD BALANCING; PARALLEL NUMERICAL COMPUTATION; SOFTWARE PORTABILITY; PROGRAMMING METHODOLOGY; ABSTRACTIONS; SOFTWARE TOOLS; SCIENTIFIC COMPUTING ID MESH AB Certain software abstractions help to automate load balancing during various math-physics calculations on a team of concurrently executing processors. These abstractions have been tested on a vortex method for computational fluid dynamics. Experiments exhibited good parallel speedups of 24 and 3.6, respectively, on 32 processors of the Intel iPSC-1-a message-passing hypercube architecture-and on 4 processors of a Cray X-MP-a shared-memory vector architecture. The abstractions should apply to diverse applications, including finite difference methods, and to diverse architectures without requiring that the application be reprogrammed extensively for each new architecture. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT MATH,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DIV COMP SCI,BERKELEY,CA 94720. NR 23 TC 12 Z9 12 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 145 EP 157 DI 10.1137/0912008 PG 13 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600008 ER PT J AU ALPERT, BK ROKHLIN, V AF ALPERT, BK ROKHLIN, V TI A FAST ALGORITHM FOR THE EVALUATION OF LEGENDRE EXPANSIONS SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE FAST TRANSFORM; LEGENDRE SERIES; CHEBYSHEV SERIES; APPROXIMATION THEORY AB An algorithm is presented for the rapid calculation of the values and coefficients of finite Legendre series. Given an n-term Legendre expansion, the algorithm produces its values at n Chebyshev nodes on the interval [-1,1] for a cost proportional to n log n. Similarly, given the values of a function f at n Chebyshev nodes, the algorithm produces the n-term Legendre expansion of the polynomial of degree n - 1 that is equal to f at these nodes. The cost of the algorithm is roughly three times that of the Fast Fourier Transform of length n, provided that calculations are performed to single precision accuracy. In double precision, the ratio is approximately 5.5. The method employed admits far-reaching generalizations and is currently being applied to several other problems. C1 YALE UNIV,DEPT MATH,NEW HAVEN,CT 06520. YALE UNIV,DEPT COMP SCI,NEW HAVEN,CT 06520. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP ALPERT, BK (reprint author), UNIV CALIF BERKELEY,DEPT MATH,BERKELEY,CA 94720, USA. NR 12 TC 98 Z9 104 U1 0 U2 7 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 158 EP 179 DI 10.1137/0912009 PG 22 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600009 ER PT J AU TRANGENSTEIN, JA PEMBER, RB AF TRANGENSTEIN, JA PEMBER, RB TI THE RIEMANN PROBLEM FOR LONGITUDINAL MOTION IN AN ELASTIC-PLASTIC BAR SO SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING LA English DT Article DE RIEMANN PROBLEM; PLASTICITY ID CONSERVATION-LAWS; MIXED TYPE; SYSTEM; FLOW AB In this paper the analytical solution to the Riemann problem for the Antman-Szymczak model of longitudinal motion in an elastic-plastic bar is constructed. The model involves two surfaces corresponding to plastic yield in tension and compression, and exhibits the appropriate limiting behavior for total compressions. The solution of the Riemann problem involves discontinuous changes in characteristic speeds due to transitions from elastic to plastic response. Illustrations are presented, in both state-space and self-similar coordinates, of the variety of possible solutions to the Riemann problem for possible use with numerical algorithms. RP TRANGENSTEIN, JA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV COMP & MATH RES,L-316,POB 808,LIVERMORE,CA 94550, USA. NR 22 TC 20 Z9 20 U1 0 U2 3 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 0196-5204 J9 SIAM J SCI STAT COMP PD JAN PY 1991 VL 12 IS 1 BP 180 EP 207 DI 10.1137/0912010 PG 28 WC Mathematics, Applied SC Mathematics GA EW356 UT WOS:A1991EW35600010 ER PT J AU FELDMAN, DL AF FELDMAN, DL TI INTERNATIONAL DECISION-MAKING FOR GLOBAL CLIMATE CHANGE SO SOCIETY & NATURAL RESOURCES LA English DT Article DE GLOBAL CLIMATE CHANGE; INTERNATIONAL COOPERATION; INTERNATIONAL LAW AND ORGANIZATION; MANAGEMENT FRAMEWORKS; TREATIES AND INTERNATIONAL AGREEMENTS ID REGIONAL SEAS PROGRAM AB Efforts aimed at controlling pollution in regional seas and at minimizing ozone depletion were, at one time, viewed to be as complex as managing global climate change. Effective international cooperation is the result of an incremental and iterative learning process among scientists, environmental groups, and political leaders who hold divergent perceptions and stakes in resource controversies. A specific lesson from these cases is that a gradual process of consensus building is effective when consultation with all affected parties takes place. This would come about after scientific, technical, economic, and political evaluation of alternative actions by all parties. Once common action to assess the impact of CO2 commences, further cooperation requires agreements based on acknowledgment of the sovereignty of all nation-states and on the importance of nonstate actors. RP FELDMAN, DL (reprint author), OAK RIDGE NATL LAB,DIV ENERGY,POB 2008,OAK RIDGE,TN 37831, USA. NR 52 TC 4 Z9 4 U1 0 U2 1 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0894-1920 J9 SOC NATUR RESOUR JI Soc. Nat. Resour. PY 1991 VL 4 IS 4 BP 379 EP 396 DI 10.1080/08941929109380768 PG 18 WC Environmental Studies; Planning & Development; Sociology SC Environmental Sciences & Ecology; Public Administration; Sociology GA GX070 UT WOS:A1991GX07000006 ER PT J AU BROCKMAN, FJ FORSE, LB BEZDICEK, DF FREDRICKSON, JK AF BROCKMAN, FJ FORSE, LB BEZDICEK, DF FREDRICKSON, JK TI IMPAIRMENT OF TRANSPOSON-INDUCED MUTANTS OF RHIZOBIUM-LEGUMINOSARUM SO SOIL BIOLOGY & BIOCHEMISTRY LA English DT Article ID SOIL-CORE MICROCOSMS; PSEUDOMONAS-FLUORESCENS; RESISTANT MUTANTS; TN5; BACTERIA; DNA; MICROORGANISMS; INSERTION; SURVIVAL; MUTAGENESIS AB Tn5 mutagenesis was investigated as a technique to genetically mark Rhizobium for soil microcosm studies. Sixteen mutants created by Tn5 insertion or suicide vector integration were analyzed to determine how the mutations affected several phenotypic traits. These included growth rate in culture, symbiotic effectiveness, and competitiveness for nodule occupancy. Seven of 10 Tn5-containing strains and 5 of 6 vector-integrate strains were impaired in one or more phenotypic traits in comparison to their parent. These results illustrate the need to carefully characterize genetically marked organisms instead of assuming the marked organism is simply an antibiotic-resistant strain equal to the parent. C1 WASHINGTON STATE UNIV, DEPT AGRON & SOILS, PULLMAN, WA 99164 USA. RP BROCKMAN, FJ (reprint author), PACIFIC NW LAB, TERR SCI SECT, K4-06,POB 999, RICHLAND, WA 99352 USA. NR 26 TC 14 Z9 14 U1 0 U2 0 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. PY 1991 VL 23 IS 9 BP 861 EP 867 DI 10.1016/0038-0717(91)90098-5 PG 7 WC Soil Science SC Agriculture GA GP217 UT WOS:A1991GP21700009 ER PT J AU ANDERSON, MA ZELAZNY, LW BERTSCH, PM AF ANDERSON, MA ZELAZNY, LW BERTSCH, PM TI FLUORO-ALUMINUM COMPLEXES ON MODEL AND SOIL EXCHANGERS SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID MAGNESIUM EXCHANGE; WYOMING BENTONITE; ADSORPTION; CALCIUM; SODIUM; MONTMORILLONITE; PERCHLORATE; SELECTIVITY; SPECIATION; CHLORIDE AB A number of investigators have suggested that complexes may exist as discrete species on the exchange phase and, thus, be important to a complete description of exchange reactions. Little evidence establishing the presence of complexes on the exchange phase has hitherto been provided, however. Adsorption experiments in which mu-M F solutions were equilibrated with K-, Ca-, and Al-saturated cation-exchange resins demonstrated substantial F removal to the Al-saturated resin, with the adsorbed F quantitatively recovered with a single wash with 1.0 M NH4Cl, whereas no F removal was observed when either K or Ca occupied the exchange sites. Removal of both Al and F from Al-F solutions equilibrated with K- and Ca-saturated resins provided additional evidence for adsorption as fluoro-Al complexes. Modeling of the competitive complexation-exchange reactions with MINTEQA2 yielded results that under-predicted net Al sorption in the presence of F, and thus also inaccurately predicted solution composition, by neglecting potential adsorption of fluoro-Al complexes. Kaolinite (KGa-2) samples also sorbed appreciable F, though both surface OH displacement and sorption to exchange-phase Al were apparently responsible for the observed decrease in F solution concentrations. In the absence of exchange-phase Al, however, all sorbed F was fixed against displacement by 1.0 M NH4Cl. Samples of a Fuquay soil (loamy, siliceous, thermic Arenic Plinthic Paleudult) profile from South Carolina were also extracted with water, 0.01 M CaCl2, and 1.0 M NH4Cl; no detectable F was found in the water extracts, while considerable F was solubilized in the CaCl2 and NH4Cl extracts, with NH4Cl-extractable F being highly correlated with exchangeable Al (r2 = 0.98). These results suggest that part of the Al on the soil exchange phase may in fact exist as fluoro-Al complexes, and also imply a role of exchange-phase Al in regulating apparent F solubility within acid soils. C1 UNIV GEORGIA,SAVANNAH RIVER ECOL LAB,DIV BIOGEOCHEM,AIKEN,SC 29801. VIRGINIA POLYTECH INST & STATE UNIV,DEPT CROP & SOIL ENVIRONM SCI,BLACKSBURG,VA 24061. NR 25 TC 15 Z9 23 U1 2 U2 5 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 JAN-FEB PY 1991 VL 55 IS 1 BP 71 EP 75 PG 5 WC Soil Science SC Agriculture GA FA732 UT WOS:A1991FA73200012 ER PT J AU NOVAK, JM SMECK, NE AF NOVAK, JM SMECK, NE TI COMPARISONS OF HUMIC SUBSTANCES EXTRACTED FROM CONTIGUOUS ALFISOLS AND MOLLISOLS OF SOUTHWESTERN OHIO SO SOIL SCIENCE SOCIETY OF AMERICA JOURNAL LA English DT Article ID NUCLEAR MAGNETIC-RESONANCE; CROSS-POLARIZATION; SOLID-STATE; NMR-SPECTROSCOPY; ORGANIC-MATTER; FULVIC-ACIDS; C-13 NMR; SOILS AB Humic and fulvic acids extracted from contiguous Alfisols and Mollisols were characterized to determine if any dissimilarities could be documented between humic substances extracted from soils formed under nearly identical environmental conditions, but belonging to different taxonomic classes. Comparisons of humic substances from two Alfisol-Mollisol pairs, one from the Wisconsinan and one from the Illinoian till plain of southwestern Ohio, were based on wet chemical, infrared, and C-13 cross-polarization magic angle spinning nuclear magnetic resonance (CPMAS NMR) spectroscopy studies. Using 0.1 M NaOH, more humic substances were extracted from the Mollisols than the Alfisols, with the majority being humic acids. Small amounts of fulvic acids were recovered from all pedons. Data from infrared and C-13 CPMAS NMR spectroscopy indicate that humic acids from both the Alfisols and Mollisols are dominated by alkyl-substituted aromatic structures, followed by aliphatic, O-substituted alkyl, carboxylic acid, and small amounts of carbonyl structures. Whereas C-13 NMR spectroscopy data suggest Mollisol humic acids contain higher aromatic and carboxylic acid contents than those of the Alfisols, Alfisol humic acid spectra show more evidence for phenolic-OH groups and lignin and lignin-like products than those of the Mollisols. Fulvic acids from Alfisols and Mollisols contained mostly aliphatic, O-substituted alkyl, and carbonyl acids, followed by aromatic groups and small amounts of carbonyl groups. The proportion of nonaromatic and aromatic structures in the fulvic acids of the Alfisols and Mollisols was similar, but slight differences were noted in elemental ratios and C-13 NMR spectra. Although only minimal differences were noted among fulvic acids, differences were evident in the chemical and structural properties of humic acids from contiguous Alfisols and Mollisols in southwestern Ohio. C1 OHIO STATE UNIV,DEPT AGRON,COLUMBUS,OH 43210. RP NOVAK, JM (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29801, USA. NR 30 TC 18 Z9 18 U1 2 U2 4 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 JAN-FEB PY 1991 VL 55 IS 1 BP 96 EP 102 PG 7 WC Soil Science SC Agriculture GA FA732 UT WOS:A1991FA73200017 ER PT J AU KOLB, GJ ALPERT, DJ LOPEZ, CW AF KOLB, GJ ALPERT, DJ LOPEZ, CW TI INSIGHTS FROM THE OPERATION OF SOLAR-ONE AND THEIR IMPLICATIONS FOR FUTURE CENTRAL RECEIVER PLANTS SO SOLAR ENERGY LA English DT Article AB The Solar One Pilot Plant successfully demonstrated the feasibility of generating electricity with a solar central receiver power plant. During the six years the plant was operated, a great deal of data was collected relating to the efficiency and availability of the plant's various systems. This paper summarizes these statistics and compares them to goals developed by the Department of Energy. Based on this comparison, and recent research, we identify key improvements in the design and operation for future central receiver power plants. These improvements are expected to solve many of the performance problems encountered at Solar One. Projections of the cost of energy for these future plants are also presented. C1 SO CALIF EDISON CORP,BARSTOW,CA 92327. RP KOLB, GJ (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 39 TC 7 Z9 9 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 1991 VL 47 IS 1 BP 39 EP 47 DI 10.1016/0038-092X(91)90061-Z PG 9 WC Energy & Fuels SC Energy & Fuels GA FR238 UT WOS:A1991FR23800004 ER PT J AU CASTRO, M PRESA, JL DIAZ, J PEIRE, J BAKER, AF FAAS, SE RADOSEVICH, LG SKINROOD, AC AF CASTRO, M PRESA, JL DIAZ, J PEIRE, J BAKER, AF FAAS, SE RADOSEVICH, LG SKINROOD, AC TI CRS RECEIVER AND STORAGE-SYSTEMS EVALUATION SO SOLAR ENERGY LA English DT Article AB This article describes a comparison and evaluation of the Solar One and CESA-I receiver and thermal storage systems. The evaluation is based on operating data from Solar One, the 10 MW(e) experimental solar central receiver plant located near Barstow, California, U.S.A., and CESA-I, the 1.2 MW(e) experimental solar central receiver plant located near Almeria, Spain. This study was sponsored by the U.S.-Spain Joint Committee for Scientific and Technological Cooperation. Significant differences exist in the design and operation of the receiver and thermal storage systems for the two experimental plants. An evaluation of their performance has increased our understanding of the plant design variables and provides useful information to improve the designs of future central receiver plants. C1 SANDIA NATL LABS,DIV PROJECT ENGN 3,LIVERMORE,CA 94551. RP CASTRO, M (reprint author), UNIV POLITECN MADRID,ETS INGN IND,DEPT ELECTR ENGN,JOSE GUTIERREZ ABASCAL 2,E-28006 MADRID,SPAIN. NR 5 TC 4 Z9 4 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 1991 VL 47 IS 3 BP 197 EP 207 DI 10.1016/0038-092X(91)90079-C PG 11 WC Energy & Fuels SC Energy & Fuels GA GG299 UT WOS:A1991GG29900007 ER PT J AU MICHALSKY, JJ PEREZ, R HARRISON, L LEBARON, BA AF MICHALSKY, JJ PEREZ, R HARRISON, L LEBARON, BA TI SPECTRAL AND TEMPERATURE CORRECTION OF SILICON PHOTOVOLTAIC SOLAR-RADIATION DETECTORS SO SOLAR ENERGY LA English DT Article ID SHADOWBAND AB Silicon photovoltaic sensors are an inexpensive alternative to standard thermopile sensors for the measurement of solar radiation. However, their temperature and spectral response render them less accurate for global horizontal irradiance and unsuitable for direct beam and diffuse horizontal irradiance unless they can be reliably corrected. A correction procedure for the rotating shadowband radiometer, which measures all three components, based on a three-way parameterization of the solar position and sky conditions is proposed. After correction, root-mean-square errors for the global and diffuse horizontal irradiance and the direct normal irradiance are about 10, 12, and 13 W/m2 in comparison with coincident, 5-minute thermopile measurements. While the numerical results are specific to the rotating shadowband instrument, the correction algorithm should apply universally. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP MICHALSKY, JJ (reprint author), SUNY ALBANY, ATMOSPHER SCI RES CTR, ALBANY, NY 12222 USA. NR 8 TC 17 Z9 18 U1 1 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 1991 VL 47 IS 4 BP 299 EP 305 DI 10.1016/0038-092X(91)90121-C PG 7 WC Energy & Fuels SC Energy & Fuels GA GP609 UT WOS:A1991GP60900006 ER PT J AU BARNARD, JC AF BARNARD, JC TI AN EVALUATION OF 3 MODELS DESIGNED FOR SITING WIND TURBINES IN AREAS OF COMPLEX TERRAIN SO SOLAR ENERGY LA English DT Article ID BOUNDARY-LAYER FLOW; HILL AB The performance of three micrositing models to simulate the winds in complex terrain was evaluated. Two of these models, MS3DJH/3R and BZ, are descendants of the Jackson-Hunt (J-H) theory, while the third, NOABL, is a mass-consistent model. The NOABL model was operated in both optimizing and normal modes. The models were evaluated by comparing model-derived simulations of the wind to actual wind data collected from two areas of complex terrain: Askervein Hill in Scotland and the Altamont Pass area of California. The overall performance of the models was about the same. When the models were applied to Askervein Hill, the errors in the prediction of averaged winds were in a range of about 8% to 10% for all models. Wind speed prediction errors for Altamont Pass were sensitive to the number of wind observations available for either model input, in the case of mass-consistent models, or post-processing of the model simulations, in the case of J-H models (or the NOABL model operated without optimization). With only one wind input wind station employed for model input, all models performed poorly and exhibited wind speed prediction errors of about 25%. Using six wind input stations reduced the errors to about 9% to 10%. Errors of this magnitude are essentially identical to those found for the Askervein Hill model simulations. The greatly improved model simulations that follow from the use of the six wind observations underscore the necessity for wind data at more than one point for some modeling situations. RP BARNARD, JC (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 19 TC 12 Z9 12 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 1991 VL 46 IS 5 BP 283 EP 294 DI 10.1016/0038-092X(91)90096-F PG 12 WC Energy & Fuels SC Energy & Fuels GA FK948 UT WOS:A1991FK94800004 ER PT J AU ZANGRANDO, F AF ZANGRANDO, F TI ON THE HYDRODYNAMICS OF SALT-GRADIENT SOLAR PONDS SO SOLAR ENERGY LA English DT Article ID ENTRAINMENT; CONVECTION; STABILITY; INTERFACE; FLUX AB The objective of this paper is to discuss those hydrodynamical issues that affect the performance of the solar pond as an energy collector and storage system, e.g., mass and energy balance; formation, stability, and maintenance of the gradient layer; energy extraction from the bottom mixed layer; stability of stratified fluids to shearing flows; interface dynamics; and wall effects. Many of these topics are not fully understood and the discussion focuses on the present state of knowledge, some of the engineering correlations available at this time, and the research that is still required to resolve the relevant issues. RP ZANGRANDO, F (reprint author), SOLAR ENERGY RES INST,GOLDEN,CO 80401, USA. NR 35 TC 34 Z9 35 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-092X J9 SOL ENERGY JI Sol. Energy PY 1991 VL 46 IS 6 BP 323 EP 341 DI 10.1016/0038-092X(91)90048-2 PG 19 WC Energy & Fuels SC Energy & Fuels GA FK950 UT WOS:A1991FK95000001 ER PT J AU HORWITZ, EP DIETZ, ML FISHER, DE AF HORWITZ, EP DIETZ, ML FISHER, DE TI SREX - A NEW PROCESS FOR THE EXTRACTION AND RECOVERY OF STRONTIUM FROM ACIDIC NUCLEAR WASTE STREAMS SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article ID SOLVENT-EXTRACTION AB A new process for the extraction and recovery of strontium from acidic waste streams is described. In this process, called SREX (for Strontium Extraction), strontium is extracted from acidic (greater-than-or-equal-to 1 M HNO3) solution using a 0.20 M solution of di-t-butylcyclohexano-18-crown-6 in 1-octanol. Extracted strontium is readily stripped from the organic phase using either water or dilute (< 0.05 M) HNO3. Tests of the process on a synthetic dissolved sludge waste solution show that only strontium, barium, and technetium are appreciably extracted by the crown ether. Prolonged exposure of the process solvent to nitric acid at elevated temperatures or to less-than-or-equal-to 50 Wh/L gamma radiation from a Co-60 source produces essentially no deterioration in its performance. Benchtop batch countercurrent extraction experiments show that 99.7% of the strontium initially present in a feed solution can be removed in only three extraction stages. RP HORWITZ, EP (reprint author), ARGONNE NATL LAB,DIV CHEM,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 29 TC 211 Z9 217 U1 3 U2 17 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 1991 VL 9 IS 1 BP 1 EP 25 DI 10.1080/07366299108918039 PG 25 WC Chemistry, Multidisciplinary SC Chemistry GA FC568 UT WOS:A1991FC56800001 ER PT J AU POOLE, LJ KING, CJ AF POOLE, LJ KING, CJ TI AN IMPROVED EXTRACTANT FOR SEPARATION OF AMMONIA FROM SOUR WATERS BY COMBINED STRIPPING AND EXTRACTION SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article AB With an appropriate liquid cation exchanger, ammonia can be extracted selectively from sour waters, thereby greatly reducing the energy requirement for stripping the acid gas(es) from the water. The ammonium form of the liquid cation exchanger is then decomposed thermally, yielding product ammonia and the ion exchanger for recycle. Such a process purifies the water and provides the ammonia and acid gases as separate products. For energy efficiency it is desirable to use a liquid cation exchanger of optimal acidity, strong enough to form the ammonium ion pair, but weak enough to allow ready regeneration. Di-2,4,4-trimethylpentyl phosphinic acid (DTMPPA) in the form of Cyanex 272 (American Cyanamid Co.) has been confirmed as an effective extractant through measurements of extraction equilibria and vapor-liquid equilibria for ammonia solutions of as-received and purified Cyanex 272. Preliminary evidence has also been obtained on thermal stability of DTMPPA at regeneration temperatures. C1 UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. NR 11 TC 1 Z9 1 U1 1 U2 7 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 1991 VL 9 IS 1 BP 103 EP 125 DI 10.1080/07366299108918045 PG 23 WC Chemistry, Multidisciplinary SC Chemistry GA FC568 UT WOS:A1991FC56800007 ER PT J AU LUMETTA, GJ MOYER, BA JOHNSON, PA WILSON, NM AF LUMETTA, GJ MOYER, BA JOHNSON, PA WILSON, NM TI EXTRACTION OF ZINC(II) ION BY DIDODECYLNAPHTHALENESULFONIC ACID (HDDNS) IN CARBON-TETRACHLORIDE - THE ROLE OF AGGREGATION SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article ID LIQUID CATION-EXCHANGER; SULFONIC-ACID; SOLVENT-EXTRACTION; DINONYLNAPHTHALENESULFONIC ACID; OSMOTIC COEFFICIENTS; SELECTIVITY; MIXTURES; SYSTEM; SALTS; SIZE AB The aggregation behavior of didodecylnaphthalenesulfonic acid (HDDNS) in carbon tetrachloride at 25.0-degrees-C has been investigated by interfacial tension measurements, FTIR spectrophotometry, Karl Fischer titrations, and computer-aided analysis of the extraction of Zn(II) ion from nitric acid solution. HDDNS forms hydrated aggregates at analytical HDDNS concentrations greater than 4.4 x 10(-6) M up to at least 0.1 M. Slope analysis of the extraction of Zn(II) up to ca. 5% loading with 0.001-0.1 M HDDNS solutions indicates that the size of the aggregates lies in the range 5-8 and increases gradually with increasing HDDNS concentration. By use of the computer programs SXLSQ and SXLSQA the extraction of Zn(II) up to ca. 40% loading may be described to within twice the experimental precision by formation of the three species H(n)A(n), ZnA(n)H(n-2), and Zn2A(n)H(n-4) (A = DDNS- anion) characterized by a common aggregation number n in the range 5-8. Under the conditions employed, organic-phase nonideality effects as estimated by the Hildebrand-Scott treatment applied in the program SXLSQA are much less useful in understanding the extraction behavior than mass-action and speciation effects. C1 OAK RIDGE NATL LAB,DIV CHEM,POB 2008,OAK RIDGE,TN 37831. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 36 TC 13 Z9 13 U1 0 U2 1 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 1991 VL 9 IS 1 BP 155 EP 176 DI 10.1080/07366299108918048 PG 22 WC Chemistry, Multidisciplinary SC Chemistry GA FC568 UT WOS:A1991FC56800010 ER PT J AU MOYER, BA CASE, FI AF MOYER, BA CASE, FI TI ON THE ORIGIN OF HAZE IN EXTRACTION SOLVENTS - DILUTION-INDUCED SUPERSATURATION OF WATER SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article ID SYSTEM AB The precipitation of fine aqueous droplets as "haze" or entrainment in dodecane solutions of di-2-ethylhexylsulfoxide (DEHSO) is demonstrated in experiments in which water-saturated dodecane solutions of DEHSO are diluted with water-saturated dodecane at 25-degrees-C. The resulting turbidity correlates with the concentration of excess water predicted from an analysis of the water extraction behavior of DEHSO. Underlying the dilution-induced turbidity is the destabilization of dimer hydrates (DEHSO)2(H2O)n, causing the release of water to the solvent. Other neutral oxygen-donor extractants are expected to exhibit this effect, which may provide additional insight into the appearance of turbidity and associated problems in certain solvent extraction systems. RP MOYER, BA (reprint author), OAK RIDGE NATL LAB,DIV CHEM,POB 2008,OAK RIDGE,TN 37831, USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 28 TC 0 Z9 0 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 1991 VL 9 IS 2 BP 277 EP 288 DI 10.1080/07366299108918055 PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA FH944 UT WOS:A1991FH94400006 ER PT J AU MOYER, BA MCDOWELL, WJ BAES, CF CASE, GN CASE, FI AF MOYER, BA MCDOWELL, WJ BAES, CF CASE, GN CASE, FI TI LIQUID-LIQUID EQUILIBRIUM-ANALYSIS IN PERSPECTIVE .1. SLOPE ANALYSIS OF THE EXTRACTION OF URANYL-NITRATE FROM NITRIC-ACID BY DI-2-ETHYLHEXYLSULFOXIDE SO SOLVENT EXTRACTION AND ION EXCHANGE LA English DT Article ID SOLVENT-EXTRACTION; COEFFICIENTS; SULFOXIDES; SYSTEM AB Slope analysis is critically examined as a stand-alone method for analyzing the representative extraction system uranyl nitrate, nitric acid, sodium nitrate, water, di-2-ethylhexylsulfoxide (DEHSO), n-dodecane at 25-degrees-C. The use of detailed computer calculations of free extractant concentrations and activity coefficients has permitted assessment of commonly employed assumptions of slope analysis in the data treatment. On the basis of slope analysis alone, the extraction of nitric acid in the absence of U(VI) can be partly described by the formation of the 1:1 adduct (DEHSO)(HNO3), but complications due to nonideality effects and the formation of at least two other species hinder further reliable analysis. Under the limiting conditions of low DEHSO molarity, low aqueous nitric acid molarity, and low U(VI) loading, a slope-analysis treatment of U(VI) extraction data shows unambiguously that the predominant extracted species of U(VI) is UO2(NO3)2(DEHSO)2(H2O)w (w not determined). However, it is difficult to treat graphically the complicated effects arising from multiple equilibria and changing activity coefficients that occur under any but the limiting conditions, and typical simplifying assumptions applied without appropriate corrections produce misleading results. In fact, a cancelling of effects obscures the true power dependence of the U(VI) distribution coefficient D(U) on DEHSO concentration at DEHSO concentrations greater than ca. 0.03 M. Thus, the advantage of simplicity in slope analysis is balanced by its limited applicability and reliability. However, with due care, slope methods of equilibrium analysis may furnish a valid, though limited, description of an extraction system, aiding further study by other techniques such as computer modeling. RP MOYER, BA (reprint author), OAK RIDGE NATL LAB,DIV CHEM ENGN & MAT SCI,POB 2008,OAK RIDGE,TN 37831, USA. RI Solominow, Sonia/A-4021-2008; Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 43 TC 20 Z9 20 U1 0 U2 3 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0736-6299 J9 SOLVENT EXTR ION EXC JI Solvent Extr. Ion Exch. PY 1991 VL 9 IS 5 BP 833 EP 864 DI 10.1080/07366299108918086 PG 32 WC Chemistry, Multidisciplinary SC Chemistry GA GQ584 UT WOS:A1991GQ58400008 ER PT J AU CROPP, LO GALLUP, DR MARSHALL, AC AF CROPP, LO GALLUP, DR MARSHALL, AC TI MASS AND PERFORMANCE ESTIMATES FOR 5 TO 1000 KW(E) NUCLEAR-REACTOR POWER-SYSTEMS FOR SPACE APPLICATIONS SO SPACE POWER LA English DT Article AB Masses and radiator areas of typical space nuclear power concepts are estimated as a function of the continuous electrical power required during a ten-year mission. Results are presented as a function of power level in the range of 5 to 1000 kW electrical. Three general reactor types will be discussed: (1) the radiatively cooled Star-C reactor technology with thermionic conversion external to the core; (2) liquid metal cooled technology with pin-type thermionic fuel element conversion in the core; and (3) the liquid metal cooled SP-100 reactor technology with thermoelectric, Brayton, Stirling, and Rankine conversion systems. Mass estimates include all satellite subsystems except the payload itself. Area estimates include radiators to dump waste heat from the power conversion and power conditioning subsystems but not the payload. All system components utilize near-term technology with the exception of the SP-100 Rankine and refractory Stirling concepts. RP CROPP, LO (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU COUNCIL SOCIAL & ECON STUDIES PI WASHINGTON PA C/O EDITOR PO BOX 34070 NW, WASHINGTON, DC 20043 SN 0883-6272 J9 SPACE POWER PY 1991 VL 10 IS 1 BP 43 EP 78 PG 36 WC Engineering, Aerospace SC Engineering GA GB299 UT WOS:A1991GB29900005 ER PT J AU PHILLIPS, JL MCCOMAS, DJ AF PHILLIPS, JL MCCOMAS, DJ TI THE MAGNETOSHEATH AND MAGNETOTAIL OF VENUS SO SPACE SCIENCE REVIEWS LA English DT Review ID SOLAR-WIND INTERACTION; MAGNETIC-FIELD OBSERVATIONS; LYMAN-ALPHA OBSERVATIONS; PLASMA-WAVE OBSERVATIONS; HOT OXYGEN-ATOMS; BOW SHOCK; PIONEER VENUS; ION PICKUP; MAGNETOMETER OBSERVATIONS; TERRESTRIAL PLANETS AB We describe the observational history and assess the current understanding of the magnetosheath and magnetotail of Venus, stressing recent developments. We make recommendations for research that can be done using existing observations, as well as desirable trajectory and instrumentation characteristics for future spacecraft missions. RP PHILLIPS, JL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 167 TC 49 Z9 50 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0038-6308 J9 SPACE SCI REV JI Space Sci. Rev. PD JAN-FEB PY 1991 VL 55 IS 1-4 BP 1 EP 80 PG 80 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA EY581 UT WOS:A1991EY58100002 ER PT J AU PRELL, LJ STYRIS, DL AF PRELL, LJ STYRIS, DL TI MECHANISM OF ELECTROTHERMAL ATOMIZATION FOR YTTRIUM BY MASS-SPECTROMETRY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID ATOMIC-ABSORPTION SPECTROMETRY; HEATED GRAPHITE ATOMIZER; METAL-CARBIDE SURFACES AB Mechanisms controlling atomization of Y2O3 were investigated by mass spectrometric techniques applied to vacuum vaporization as well as vaporization in N2 at 1 atmosphere pressure. Molecular beam sampling was used in the latter case. The real-time mass spectra of gas species generated in the furnace elucidated the reaction paths involved during the atomization cycle. Gas phase yttrium oxides dissociatively chemisorb on or are directly reduced by sites on the graphite surface. The free species is due to desorption of the resulting yttrium. No low-temperature precursors to atomization were observed, but high-temperature analyte losses persist as oxides, the carbide, and the hydroxide above 2400 K. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 16 TC 6 Z9 6 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. PY 1991 VL 46 IS 1 BP 45 EP 49 DI 10.1016/0584-8547(91)80005-N PG 5 WC Spectroscopy SC Spectroscopy GA EQ342 UT WOS:A1991EQ34200004 ER PT J AU RIBY, PG HARNLY, JM STYRIS, DL BALLOU, NE AF RIBY, PG HARNLY, JM STYRIS, DL BALLOU, NE TI EMISSION CHARACTERISTICS OF CHROMIUM IN HOLLOW ANODE-FURNACE ATOMIZATION NONTHERMAL EXCITATION SPECTROMETRY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID ATOMIC-ABSORPTION SPECTROMETRY; GRAPHITE-FURNACE; FANES AB Emission parameters for the determination of Cr using hollow anode-furnace atomization non-thermal excitation spectrometry (HA-FANES) were investigated. The spectral background between 280 and 400 nm included strong emission bands from CN, NH and CH. The best signal-to-noise ratio for Cr was observed for the atomic line at 359.3 nm. Argon atomic emission (420.1 nm) showed no decrease in intensity in the presence of thermionic electrons while Ar ionic emission (434.8 nm) showed a dramatic decrease in intensity. The integrated Cr emission signal exhibited a broad maximum between atomization temperatures of 1800 and 2100-degrees-C. Peak areas increased with pressure with the best signal-to-noise ratio found at 160 Torr (21 300 Pa). The discharge current ranged from 10 to 90 mA with the optimum current dependent on the pressure. A limit of detection of 0.8 pg was obtained for an Ar pressure of 160 Torr, a current of 70 mA, and an atomization temperature of 2000-degrees-C. This limit of detection is comparable to conventional GFAAS and a factor of five better than hollow cathode FANES (HC-FANES). The accuracy of the technique was assessed by the determination of Cr in a standard reference water (SRM 1643b). C1 USDA, BELTSVILLE HUMAN NUTR RES CTR, NUTRIENT COMPOSIT LAB,BLDG 161, BARC E, BELTSVILLE, MD 20705 USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 26 TC 12 Z9 12 U1 0 U2 0 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. PY 1991 VL 46 IS 2 BP 203 EP 215 DI 10.1016/0584-8547(91)80023-V PG 13 WC Spectroscopy SC Spectroscopy GA EX685 UT WOS:A1991EX68500010 ER PT J AU MANNING, TJ PALMER, BA HOF, DE WINEFORDNER, JD AF MANNING, TJ PALMER, BA HOF, DE WINEFORDNER, JD TI SUPPLEMENTAL DATA ON LINE SHIFTS AND LINE-PROFILES STUDIES IN AN INDUCTIVELY COUPLED ARGON PLASMA SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Note ID FOURIER-TRANSFORM SPECTROMETER C1 UNIV CALIF LOS ALAMOS SCI LAB,CLER & LASER SCI,LOS ALAMOS,NM 87545. UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611. RP MANNING, TJ (reprint author), W VIRGINIA UNIV,DEPT CHEM,MORGANTOWN,WV 26506, USA. NR 9 TC 8 Z9 8 U1 0 U2 0 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. PY 1991 VL 46 IS 3 BP 447 EP 451 DI 10.1016/0584-8547(91)80041-Z PG 5 WC Spectroscopy SC Spectroscopy GA EZ879 UT WOS:A1991EZ87900008 ER PT J AU HOLCOMBE, JA STYRIS, DL HARRIS, JD AF HOLCOMBE, JA STYRIS, DL HARRIS, JD TI MASS-SPECTROMETRIC INVESTIGATIONS OF ALUMINUM-OXIDE REDUCTION BY GASEOUS ALUMINUM CARBIDES IN ELECTROTHERMAL ATOMIZATION SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID ATOMIC-ABSORPTION SPECTROMETRY; GRAPHITE-FURNACE; CARBOTHERMAL REDUCTION; MECHANISM AB Inducement of free atom formation by reduction of oxide by carbides (ROC) was investigated experimentally using mass spectrometric techniques. The effort focuses on atomization of Al2O3 using aqueous, slurry and solitary Al-sphere samples to evaluate the ROC model. Conventional heating rates as well as the low heating rates used to evaluate the "spike" phenomenon, show relatively little Al2C2 produced during free atom formation. The more abundant, consistently observed, gaseous species were Al, Al2, and unless Al-sphere samples were used, Al2O. These were also the more abundant species contained in the "spike" profiles. The spike phenomenon is observed even for the metal samples. The observations are not attributable to an ROC mechanism as presently conceived. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP HOLCOMBE, JA (reprint author), UNIV TEXAS, DEPT CHEM, AUSTIN, TX 78712 USA. NR 19 TC 31 Z9 31 U1 0 U2 3 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. PY 1991 VL 46 IS 5 BP 629 EP 639 DI 10.1016/0584-8547(91)80066-C PG 11 WC Spectroscopy SC Spectroscopy GA FK954 UT WOS:A1991FK95400007 ER PT J AU NIU, HS HU, K HOUK, RS AF NIU, HS HU, K HOUK, RS TI LANGMUIR PROBE MEASUREMENTS OF ELECTRON-TEMPERATURE AND ELECTRON-DENSITY BEHIND THE SKIMMER OF AN INDUCTIVELY COUPLED PLASMA MASS-SPECTROMETER SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID IONIZATION TEMPERATURE; POTENTIAL MEASUREMENTS; MATRIX INTERFERENCES; NUMBER DENSITIES; WATER; EMISSION; ICP; EXCITATION; INTERFACE; ELEMENTS AB A single Langmuir probe is inserted axially into the region between the skimmer and first ion lens of an inductively coupled plasma mass spectrometer (ICP-MS). Reasonable current-voltage (I-V) curves are obtained with an axial spatial resolution of approximately 5 mm. Electron temperature (T(c)) is in the range 2000-11 000 K and changes with aerosol gas flow rate and water loading in a similar way as did previous T(e) measurements with the probe inside the supersonic jet. Electron density (n(c)) is in the range 10(8)-10(10) cm-3 near the skimmer tip and drops abruptly to 10(6)-10(8) cm-3 as the probe is retracted further behind the skimmer. Electron density in the beam leaving the skimmer also depends on water loading and on the presence and mass of matrix elements. These results support the general premise that the properties of the ion beam are affected by a matrix element, which is thought to cause matrix interferences in ICP-MS. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,DEPT CHEM,AMES,IA 50011. NR 41 TC 25 Z9 25 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. PY 1991 VL 46 IS 6-7 BP 805 EP 817 DI 10.1016/0584-8547(91)80082-E PG 13 WC Spectroscopy SC Spectroscopy GA GE730 UT WOS:A1991GE73000009 ER PT J AU ZHANG, ZX BEAR, BR FASSEL, VA AF ZHANG, ZX BEAR, BR FASSEL, VA TI DETERMINATION OF MAJOR, MINOR AND TRACE CONSTITUENTS IN METEORITES BY INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROSCOPY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID ELEMENTAL CONCENTRATION DATA; RARE-EARTH ELEMENTS; SCANNING MONOCHROMATOR; 1988 COMPILATION; SPECTROMETRY; SAMPLES; NEBULIZATION; ROCKS AB The ICP-AES determination of major, minor and trace constituents in meteorites is described. The meteorite samples were dissolved in a mixture of aqua regia and HF in sealed Teflon bombs and boric acid was added after dissolution to complex the excess HF. The final solutions were transformed into an aerosol via ultrasonic nebulization as a means of sample introduction. Calibration was performed with synthetic reference solutions which contained the reagents used for sample dissolution, but no matching for the major sample constituents was made. A polychromator and a programmable scanning monochromator were applied and tested for a five months operation period. The accuracy of the determinations was assessed by: (a) comparing the results with those obtained by neutron activation and X-ray fluorescence and (b) analysing several geological reference samples. The results showed good agreement. The relative standard deviation of the determination of the major elements ranged from 0.5 to 2% and of the minor and trace elements from 0.5 to 8%. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,DEPT CHEM,AMES,IA 50011. NR 31 TC 7 Z9 7 U1 1 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. PY 1991 VL 46 IS 8 BP 1171 EP 1183 DI 10.1016/0584-8547(91)80112-G PG 13 WC Spectroscopy SC Spectroscopy GA GA509 UT WOS:A1991GA50900005 ER PT J AU PAYNE, MG ALLMAN, SL PARKS, JE AF PAYNE, MG ALLMAN, SL PARKS, JE TI EFFECT OF HYPERFINE-STRUCTURE ON IONIZATION EFFICIENCIES IN STEPWISE IONIZATION USING BROAD BANDWIDTH LASERS SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID SPIN POLARIZATION AB It has recently been shown that in the stepwise excitation and ionization of an element with broad bandwidth lasers, there are major effects due to the fact that even and odd isotopes have different hyperfine structures. The increase in the number of levels and the decrease in the dipole matrix elements of the individual transitions leads to easily observable differences in ionization probabilities for isotopes with different nuclear spins. Here we describe two methods for eliminating biases due to hyperfine structure on the measurement of isotope ratios using broad bandwidth resonance ionization mass spectroscopy (RIMS). C1 UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996. RP PAYNE, MG (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 11 TC 28 Z9 28 U1 0 U2 0 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. PY 1991 VL 46 IS 11 BP 1439 EP 1457 DI 10.1016/0584-8547(91)80197-B PG 19 WC Spectroscopy SC Spectroscopy GA GP477 UT WOS:A1991GP47700001 ER PT J AU WING, TC RUSSO, RE AF WING, TC RUSSO, RE TI STUDY OF LASER MATERIAL INTERACTIONS USING INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION-SPECTROMETRY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID MASS-ABLATION RATE; ELEMENTAL ANALYSIS; TARGET GEOMETRY; SOLID SAMPLES; VAPORIZATION; WAVELENGTH AB Laser sampling; represents a versatile technique for solid sample introduction into an analytical excitation source. However, fundamental study of the laser-material interaction is necessary for optimal performance of this technique, especially for the analysis of samples with a complex matrix. In this paper, some phenomena of the laser-material interaction for samples of simple matrix were described and interpreted using inductively coupled plasma-atomic emission spectrometry (ICP-AES). The ICP operating parameters are held constant and the effect of laser operating parameters on the laser-material interaction is monitored by observing the ICP emission signal temporally and spatially. The effect of sample transport characteristics. lazer power density, condition of sample surface and the pressure pulse generated by the expansion of laser plasma will be described. A photodiode array spectrometer was used to monitor several wavelengths simultaneously and to monitor the vertical profile of the ICP discharge for an emission line. A photomultiplier-based monochromator was used to observe events, taking advantage of the fast response time of the photomultiplier detector. ICP-AES has proved to be a powerful tool for studying the laser-material interaction. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV APPL SCI,LIVERMORE,CA 94550. NR 30 TC 2 Z9 2 U1 1 U2 11 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. PY 1991 VL 46 IS 11 BP 1471 EP 1486 PG 16 WC Spectroscopy SC Spectroscopy GA GP477 UT WOS:A1991GP47700003 ER PT J AU VERA, JA MURRAY, GM WEEKS, SJ EDELSON, MC AF VERA, JA MURRAY, GM WEEKS, SJ EDELSON, MC TI ISOTOPIC ABUNDANCE DETERMINATION BY INDUCTIVELY COUPLED PLASMA HIGH-RESOLUTION LASER-EXCITED ATOMIC AND IONIC FLUORESCENCE SPECTROSCOPY SO SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY LA English DT Article ID 350 PROMINENT LINES; DETECTION LIMITS; ELEMENTS; SPECTROMETRY; FURNACES; FLAMES; SHAPES; ICP AB Inductively coupled plasma-laser excited atomic, fluorescence spectroscopy (ICP-LEAFS) has been successfully applied to isotopic analysis for the first time. The criteria for selecting useful excitation/fluorescence line pairs are presented and applied to the determination of uranium isotope concentration. Calculations of the ICP-LEAFS line profiles for U II 286.57 and 288.96 nm excitation are presented and suggest that the first transition should be useful for isotopic analysis using the ICP source, with a multi-mode dye laser, whereas the second should not. These results were confirmed by experiment. The detection limit for U via ICP-LEAFS using the 286.57/288.96 nm excitation/fluorescence line pair was estimated to be approximately 2-mu-g/ml. The non-resonance fluorescence determination of U dissolved in a very complex matrix was shown to be independent of spectral line interferences from the matrix elements. C1 US DOE,AMES LAB,AMES,IA 50011. RI Murray, George/A-6625-2011 NR 32 TC 13 Z9 13 U1 0 U2 2 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. PY 1991 VL 46 IS 13 BP 1689 EP 1700 DI 10.1016/0584-8547(91)80173-Z PG 12 WC Spectroscopy SC Spectroscopy GA GT339 UT WOS:A1991GT33900004 ER PT B AU MURAO, S COLLART, FR HUBERMAN, E AF MURAO, S COLLART, FR HUBERMAN, E BE WAXMAN, S ROSSI, GB TAKAKU, F TI A PROTEIN COMPLEX EXPRESSED DURING TERMINAL DIFFERENTIATION OF MONOMYELOCYTIC CELLS IS AN INHIBITOR OF GROWTH SO STATUS OF DIFFERENTATION THERAPY OF CANCER, VOL 2 SE SERONO SYMPOSIA PUBLICATIONS FROM RAVEN PRESS LA English DT Proceedings Paper CT 4TH CONF ON DIFFERENTIATION THERAPY CY NOV 04-09, 1990 CL NAGARA VILLAGE, JAPAN SP ARES SERONO SYMP, SANKYO FDN LIFE SCI, UEHARA MEM FDN, MOCHIDA MEM FDN MED & PHARM RES, KIRIN BREWERY, SANKYO, FUJISAWA PHARM, YAMANOUCHI PHARM, EISAI, SHIONOGI PHARM RP MURAO, S (reprint author), ARGONNE NATL LAB,DIV BIOL & MED RES,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU RAVEN PRESS PI NEW YORK PA NEW YORK BN 0-88167-792-2 J9 SERONO SYM PY 1991 VL 82 BP 33 EP 44 PG 12 WC Biochemistry & Molecular Biology; Oncology; Pharmacology & Pharmacy SC Biochemistry & Molecular Biology; Oncology; Pharmacology & Pharmacy GA BU53W UT WOS:A1991BU53W00006 ER PT J AU LEVY, RP FABRIKANT, JI FRANKEL, KA PHILLIPS, MH LYMAN, JT LAWRENCE, JH TOBIAS, CA AF LEVY, RP FABRIKANT, JI FRANKEL, KA PHILLIPS, MH LYMAN, JT LAWRENCE, JH TOBIAS, CA TI HEAVY-CHARGED-PARTICLE RADIOSURGERY OF THE PITUITARY-GLAND - CLINICAL-RESULTS OF 840 PATIENTS SO STEREOTACTIC AND FUNCTIONAL NEUROSURGERY LA English DT Article; Proceedings Paper CT HARVARD RADIOSURGERY UPDATE COURSE ON RADIOSURGERY : ENHANCEMENT OF CLINICAL EXCELLENCE CY JUN 11-13, 1990 CL BOSTON, MA DE HEAVY-CHARGED PARTICLES; PITUITARY ADENOMAS; PITUITARY IRRADIATION; STEREOTAXIC RADIOSURGERY AB Since 1954, 840 patients have been treated at Lawrence Berkeley Laboratory with stereotactic charged-particle radiosurgery of the pituitary gland. The initial 30 patients were treated with proton beams; the subsequent 810 patients were treated with helium ion beams. In the great majority of the 475 patients treated for pituitary tumors, marked and sustained biochemical and clinical improvement was observed. Variable degrees of hypopituitarism developed in about one-third of patients treated solely with radiosurgery. In the earlier years of the program, 365 patients underwent radiosurgery to treat selected systemic diseases by inducing hypopituitarism. Focal temporal lobe necrosis and cranial nerve injury occurred in about 1% of patients who were treated with doses less than 230 Gy. RP LEVY, RP (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DONNER LAB,DONNER PAVIL,BERKELEY,CA 94720, USA. NR 24 TC 71 Z9 78 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1011-6125 J9 STEREOT FUNCT NEUROS JI Stereotact. Funct. Neurosurg. PY 1991 VL 57 IS 1-2 BP 22 EP 35 DI 10.1159/000099553 PG 14 WC Neurosciences; Neuroimaging; Surgery SC Neurosciences & Neurology; Surgery GA HG992 UT WOS:A1991HG99200004 PM 1808652 ER PT J AU STEINBERG, GK FABRIKANT, JI MARKS, MP LEVY, RP FRANKEL, KA PHILLIPS, MH SHUER, LM SILVERBERG, GD AF STEINBERG, GK FABRIKANT, JI MARKS, MP LEVY, RP FRANKEL, KA PHILLIPS, MH SHUER, LM SILVERBERG, GD TI STEREOTAXIC HELIUM ION BRAGG PEAK RADIOSURGERY FOR INTRACRANIAL ARTERIOVENOUS-MALFORMATIONS - DETAILED CLINICAL AND NEURORADIOLOGICAL OUTCOME SO STEREOTACTIC AND FUNCTIONAL NEUROSURGERY LA English DT Article; Proceedings Paper CT HARVARD RADIOSURGERY UPDATE COURSE ON RADIOSURGERY : ENHANCEMENT OF CLINICAL EXCELLENCE CY JUN 11-13, 1990 CL BOSTON, MA DE INTRACRANIAL VASCULAR MALFORMATIONS; CEREBRAL ARTERIOVENOUS MALFORMATIONS; STEREOTAXIC RADIATION; HELIUM ION RADIATION; STEREOTAXIC RADIOSURGERY ID LINEAR-ACCELERATOR; NATURAL-HISTORY; POSTERIOR-FOSSA; BRAIN AB 89 patients with angiographically documented arteriovenous malformations were treated with helium ion Bragg peak radiation. The rate of complete angiographic obliteration 2 years after radiation was 94% in those lesions smaller than 4 cm3 (2.0 cm in diameter), 75% for those 4-25 cm3 and 39% for those larger than 25 cm3 (3.7 cm in diameter); at 3 years after radiation, the corresponding obliteration rates were 100, 95 and 70%. Major clinical complications occurred in 10 patients (8 permanent, 2 transient) between 3 and 21 months after treatment; all were in the initial stage of the protocol (higher radiation doses). 10 patients bled from residual malformation between 4 and 34 months after treatment. Seizures were improved in 63% and headaches in 68% of patients. Excellent or good clinical outcome was achieved in 94% of patients. Compared to the natural history and risks of surgery for these difficult malformations, we consider these results encouraging. Heavy-charged-particle radiation is a valuable therapy for surgically inaccessible symptomatic cerebral arteriovenous malformations. The current procedure has two disadvantages: the prolonged latent period before complete obliteration and the small risk of serious neurological complications. C1 STANFORD UNIV,MED CTR,SCH MED,DEPT RADIOL,STANFORD,CA 94305. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DONNER LAB,BERKELEY,CA 94720. RP STEINBERG, GK (reprint author), STANFORD UNIV,MED CTR,SCH MED,DEPT NEUROSURG,S006,300 PASTEUR DR,STANFORD,CA 94305, USA. NR 25 TC 12 Z9 12 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1011-6125 J9 STEREOT FUNCT NEUROS JI Stereotact. Funct. Neurosurg. PY 1991 VL 57 IS 1-2 BP 36 EP 49 DI 10.1159/000099554 PG 14 WC Neurosciences; Neuroimaging; Surgery SC Neurosciences & Neurology; Surgery GA HG992 UT WOS:A1991HG99200005 PM 1808653 ER PT J AU LO, EH FABRIKANT, JI AF LO, EH FABRIKANT, JI TI DELAYED BIOLOGIC REACTIONS TO STEREOTAXIC CHARGED-PARTICLE RADIOSURGERY IN THE HUMAN BRAIN SO STEREOTACTIC AND FUNCTIONAL NEUROSURGERY LA English DT Article DE STEREOTAXIC RADIOSURGERY; DELAYED RADIATION INJURY; BLOOD-BRAIN BARRIER; CEREBRAL BLOOD FLOW; CEREBRAL METABOLISM; CHARGED PARTICLES ID BRAGG PEAK RADIOSURGERY; ARTERIOVENOUS-MALFORMATIONS; THERAPEUTIC IRRADIATION; VASCULAR DISORDERS; NERVOUS-SYSTEM; RADIATION; DAMAGE; INJURY; CT; MR AB Over 350 patients have been treated for inoperable intracranial arteriovenous malformations with charged-particle radiosurgery. Focussed accelerated helium ion beams derived from charged-particle cyclotrons are stereotactically directed into the brain to obliterate abnormal shunts. Treated patients demonstrate delayed changes in brain anatomy and function that occur months to years after radiosurgery. The underlying mechanisms of the brain's delayed reaction to charged-particle radiosurgery involve complex perturbations in cerebrovascular and metabolic function. This report describes the wide range of delayed reactions that may occur in the brain after radiosurgery, including hemodynamic changes, blood-brain barrier disruption and vasogenic edema, metabolic suppression, and parenchymal necrosis. These delayed reactions to injury in the brain involve potential target cells that include cerebral endothelial cells, oligodendroglia and astrocytes. C1 STANFORD UNIV,MED CTR,SCH MED,DEPT NEUROSURG,STANFORD,CA 94305. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF SAN FRANCISCO,DEPT RADIOL,SAN FRANCISCO,CA 94143. NR 27 TC 11 Z9 12 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 1011-6125 J9 STEREOT FUNCT NEUROS JI Stereotact. Funct. Neurosurg. PY 1991 VL 56 IS 4 BP 197 EP 212 DI 10.1159/000099407 PG 16 WC Neurosciences; Neuroimaging; Surgery SC Neurosciences & Neurology; Surgery GA HE176 UT WOS:A1991HE17600001 PM 1808645 ER PT J AU CRABTREE, GW KWOK, WK WELP, U CLAUS, H VANDERVOORT, KG FLESHLER, S FANG, Y AF CRABTREE, GW KWOK, WK WELP, U CLAUS, H VANDERVOORT, KG FLESHLER, S FANG, Y TI VARIATIONS IN THE FIELD BROADENING OF THE RESISTIVE TRANSITION IN OXYGEN DEFICIENT SINGLE-CRYSTALS OF YBA2CU3O7-DELTA SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL AB Resistive measurements in an oxygen deficient single crystal show evidence of flux motion resistivity and pinning by twin boundaries. The shape of the transition for H along c changes as a function of field. Values of the activation energy are derived. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. UNIV ILLINOIS,DEPT PHYS,CHICAGO,IL 60680. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. RP CRABTREE, GW (reprint author), ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S442 EP S444 DI 10.1088/0953-2048/4/1S/133 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000134 ER PT J AU GORDON, JE FISHER, RA KAMIN, S PHILLIPS, NE AF GORDON, JE FISHER, RA KAMIN, S PHILLIPS, NE TI SPECIFIC-HEAT EVIDENCE FOR STRONG COUPLING IN YBA2CU3O7 SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL ID SUPERCONDUCTORS AB Specific heat data for YBa2Cu3O7 are consistent with gamma = 15 +/- 3 mJ/mole.K2 and 2-DELTA-o/kT(c) = 6.8 +/- 0.6. These results indicate that strong-coupling effects are present but that the coupling is unlikely to be predominantly a conventional electron-phonon interaction. C1 AMHERST COLL,DEPT PHYS,AMHERST,MA 01002. RP GORDON, JE (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,MCSD,BERKELEY,CA 94720, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S280 EP S282 DI 10.1088/0953-2048/4/1S/079 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000080 ER PT J AU JORGENSEN, JD LIGHTFOOT, P PEI, SY AF JORGENSEN, JD LIGHTFOOT, P PEI, SY TI STRUCTURAL-PROPERTIES OF THE OXIDE SUPERCONDUCTORS - THE CRITICAL ROLE OF DEFECTS SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL ID CRYSTAL-STRUCTURE; SR; LA2CUO4+DELTA; STOICHIOMETRY; DIFFRACTION; SUPEROXIDE; NEUTRON; PHASE AB Structural data have contributed greatly to our understanding of the oxide superconductors. However, it is increasingly clear that a knowledge of the average structure is not sufficient. Structural defects, which are present in essentially all of these systems, have a profound effect on the superconducting properties. C1 ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439. RP JORGENSEN, JD (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. OI Lightfoot, Philip/0000-0001-7048-3982 NR 28 TC 11 Z9 11 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 JAN PY 1991 VL 4 SU 1 BP S11 EP S18 DI 10.1088/0953-2048/4/1S/002 PG 8 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000003 ER PT J AU KRITSCHA, W SAUERZOPF, FM WEBER, HW CRABTREE, GW LIU, JZ AF KRITSCHA, W SAUERZOPF, FM WEBER, HW CRABTREE, GW LIU, JZ TI FLUX PINNING ENHANCEMENT BY TWIN BOUNDARIES SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL AB We have measured the magnetization of single crystal YBa2Cu3O7-delta with all the twin planes orientated in only one direction. By rotating the magnetic field in the (ab)-plane, we find significant enhancements of the magnetization (up to a factor of 4.6), when the field is directed parallel to the twin boundaries. No angular dependence of the magnetization in the (ab)-plane could be detected at temperatures exceeding almost-equal-to 40 K. C1 UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. RP KRITSCHA, W (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. NR 7 TC 7 Z9 7 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S259 EP S261 DI 10.1088/0953-2048/4/1S/072 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000073 ER PT J AU KWOK, WK WELP, U FLESHLER, S VANDERVOORT, KG CRABTREE, GW LIU, JZ BROOKS, J HETTINGER, J HANNAHS, ST AF KWOK, WK WELP, U FLESHLER, S VANDERVOORT, KG CRABTREE, GW LIU, JZ BROOKS, J HETTINGER, J HANNAHS, ST TI PINNING IN TWIN BOUNDARIES OF YBA2CU3O7-DELTA SINGLE-CRYSTALS SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL ID HIGH-TEMPERATURE SUPERCONDUCTORS AB We present direct observation of Lorentz force induced flux motion and pinning by twin boundaries in single crystal YBa2Cu3O7-delta. From AC magnetoresistance measurements, we derive the effective pinning potential attributed to twin boundaries. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. UNIV ILLINOIS,CHICAGO,IL 60680. UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215. PURDUE UNIV,W LAFAYETTE,IN 47907. RP KWOK, WK (reprint author), ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439, USA. RI Hannahs, Scott/B-1274-2008 OI Hannahs, Scott/0000-0002-5840-7714 NR 8 TC 2 Z9 2 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S106 EP S108 DI 10.1088/0953-2048/4/1S/021 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000022 ER PT J AU WEBER, HW WIESINGER, HP KRITSCHA, W SAUERZOPF, FM CRABTREE, GW LIU, JZ CHANG, YC JIANG, PZ AF WEBER, HW WIESINGER, HP KRITSCHA, W SAUERZOPF, FM CRABTREE, GW LIU, JZ CHANG, YC JIANG, PZ TI CRITICAL CURRENTS IN NEUTRON-IRRADIATED YBCO AND BISCCO SINGLE-CRYSTALS SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL AB Neutron irradiation of high-T(c) single crystals in the fluence range up to 2x10(22) m2 (E > 0.1 MeV) has been found to lead to the following property changes: 1. The critical temperature decreases only moderately at a rate of approximately 4 K per 10(22) neutrons per m2; 2. The critical current densities J(c) as deduced from magnetization measurements on the basis of an extended Bean model increase significantly; 3. These J(c)-enhancements are larger at higher temperatures; 4. The anisotropy of J(c) decreases significantly with neutron fluence; and 5. The irreversibility line in BiSCCO-2212 is shifted to much higher fields and temperatures. C1 ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP WEBER, HW (reprint author), UNIV VIENNA,INST ATOM,A-1020 VIENNA,AUSTRIA. NR 8 TC 4 Z9 4 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S103 EP S105 DI 10.1088/0953-2048/4/1S/020 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000021 ER PT J AU WELP, U FLESHLER, S KWOK, WK DOWNEY, J FANG, Y CRABTREE, GW LIU, JZ AF WELP, U FLESHLER, S KWOK, WK DOWNEY, J FANG, Y CRABTREE, GW LIU, JZ TI THE A-B ANISOTROPY OF THE NORMAL STATE RESISTIVITY OF UNTWINNED YBA2CU3O7-DELTA SO SUPERCONDUCTOR SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT SATELLITE CONF TO THE 19TH INTERNATIONAL CONF ON LOW TEMPERATURE PHYSICS : HIGH TEMPERATURE SUPERCONDUCTIVITY CY AUG 13-15, 1990 CL QUEENS COLL, CAMBRIDGE, ENGLAND SP UNIV CAMBRIDGE, INTERDISCIPLINARY RES CTR SUPERCONDUCT HO QUEENS COLL ID CRYSTALS AB We present measurements of the a-b anisotropy of the normal state resistivity rho-a/rho-b of untwinned YBa2Cu3O7-delta. rho-a/rho-b increases with increasing temperature and reaches a (sample dependent) value of 1.2 to 1.85 near room temperature. C1 ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616. RP WELP, U (reprint author), ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439, USA. NR 10 TC 5 Z9 5 U1 0 U2 0 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 JAN PY 1991 VL 4 SU 1 BP S409 EP S411 DI 10.1088/0953-2048/4/1S/122 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA FA420 UT WOS:A1991FA42000123 ER PT J AU FRITZ, IJ KLEM, JF BRENNAN, TM WENDT, JR ZIPPERIAN, TE AF FRITZ, IJ KLEM, JF BRENNAN, TM WENDT, JR ZIPPERIAN, TE TI SUPERPOSITION OF LIGHT-HOLE AND HEAVY-HOLE BANDGAPS IN INGAAS/INALAS STRAINED QUANTUM-WELL STRUCTURES SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID LAYER SUPERLATTICES; OPTICAL-ABSORPTION; UNIAXIAL-STRESS; ELECTRIC-FIELD RP FRITZ, IJ (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 21 TC 9 Z9 9 U1 0 U2 2 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1991 VL 10 IS 1 BP 99 EP 106 DI 10.1016/0749-6036(91)90156-L PG 8 WC Physics, Condensed Matter SC Physics GA FZ178 UT WOS:A1991FZ17800019 ER PT J AU HOLTZ, PO HJALMARSON, HP SUNDARAM, M MERZ, JL GOSSARD, AC AF HOLTZ, PO HJALMARSON, HP SUNDARAM, M MERZ, JL GOSSARD, AC TI INTRINSIC 2-HOLE TRANSITIONS DEMONSTRATING THE LOCALIZATION EFFECTS DUE TO INTERFACE ROUGHNESS SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID QUANTUM WELLS; STATES C1 UNIV CALIF SANTA BARBARA,CTR QUANTIZED ELECTRON STRUCT,SANTA BARBARA,CA 93106. SANDIA NATL LABS,DIV CONDENSED MATTER THEORY,ALBUQUERQUE,NM 87185. RP HOLTZ, PO (reprint author), LINKOPING UNIV,DEPT PHYS & MEASUREMENT TECHNOL,S-58183 LINKOPING,SWEDEN. RI Materials, Semiconductor/I-6323-2013; Holtz, Per Olof/L-5598-2015 OI Holtz, Per Olof/0000-0003-0668-7504 NR 14 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1991 VL 9 IS 3 BP 407 EP 410 DI 10.1016/0749-6036(91)90268-V PG 4 WC Physics, Condensed Matter SC Physics GA FM434 UT WOS:A1991FM43400027 ER PT J AU LAURICH, BK SMITH, DL WATKINS, DE SELA, I SUBBANNA, S KROEMER, H AF LAURICH, BK SMITH, DL WATKINS, DE SELA, I SUBBANNA, S KROEMER, H TI NONLINEAR OPTICAL-ABSORPTION IN INTRINSIC STARK-EFFECT SUPERLATTICES SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID STRAINED-LAYER SUPERLATTICES; GROWTH AXIS; GAAS; ALGAAS; INGAAS C1 UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106. RP LAURICH, BK (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 13 TC 4 Z9 4 U1 1 U2 1 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1991 VL 9 IS 4 BP 499 EP 502 DI 10.1016/0749-6036(91)90178-T PG 4 WC Physics, Condensed Matter SC Physics GA FQ175 UT WOS:A1991FQ17500018 ER PT J AU CHRISTENSEN, TM SORENSEN, NR AF CHRISTENSEN, TM SORENSEN, NR TI THERMAL-STABILITY OF BENZOTRIAZOLE ON COPPER DURING ATMOSPHERIC CORROSION SO SURFACE AND INTERFACE ANALYSIS LA English DT Article ID RAY PHOTOELECTRON-SPECTROSCOPY; OXIDE SURFACES; CUPROUS-OXIDE; INHIBITORS AB Atmospheric corrosion of copper can result in substantial problems for electrical interconnection in microelectronic applications. We have used x-ray photoelectron spectroscopy (XPS) to examine the effects of benzotriazole (BTA), an organic corrosion inhibitor, on atmospheric oxidation and sulfidation of polycrystalline copper in the temperature range 30-200-degrees-C. XPS results demonstrated that BTA was removed from the copper surface at some temperature below 200-degrees-C in most environments. The temperature at which BTA was lost depended on the ambient composition. BTA was least stable in sulfur-containing environments, disappearing from the surface even at room temperatures. In oxygen-containing environments, BTA was quickly lost from the surface at temperatures above 150-degrees-C. BTA was quite stable in pure nitrogen and in a vacuum up to temperatures near 200-degrees-C. This suggests that the loss mechanism involved a chemical reaction rather than solely a thermal process. The BTA-Cu(II) complex existing at room temperature was irreversibly converted into a BTA-Cu(I) complex upon heating above 90-degrees-C in a vacuum. C1 SANDIA NATL LABS,DIV 1834,ALBUQUERQUE,NM 87185. RP CHRISTENSEN, TM (reprint author), UNIV COLORADO,DEPT PHYS,COLORADO SPRINGS,CO 80933, USA. NR 13 TC 25 Z9 25 U1 1 U2 9 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0142-2421 J9 SURF INTERFACE ANAL JI Surf. Interface Anal. PD JAN PY 1991 VL 17 IS 1 BP 3 EP 6 DI 10.1002/sia.740170104 PG 4 WC Chemistry, Physical SC Chemistry GA EV059 UT WOS:A1991EV05900002 ER PT J AU GALUSKA, AA GREULICH, FG AF GALUSKA, AA GREULICH, FG TI DETECTION LIMIT FOR CARBON IN INSB DURING SIMS DEPTH PROFILING SO SURFACE AND INTERFACE ANALYSIS LA English DT Article ID GAAS AB Secondary ion mass spectrometry (SIMS) is commonly used to determine the depth distribution of carbon in semiconductors. Carbonaceous residual gases in SIMS instrumentation and memory effects associated with carbon redeposition within the sputtered craters normally limit the detectability of carbon to approximately 1 x 10(17) C cm-3. In this investigation, the effects of primary ion (Cs+ and O2+), primary ion current (also current density), secondary ion, secondary ion energy discrimination, cryogenic cold finger and vacuum on the SIMS analysis of carbon in InSb were examined and optimized. Under optimized analysis conditions, the detection limit for carbon was reduced to approximately 1 x 10(16) C cm-3. Detection of the Sb-123C-12- was molecular ion rather than C-12- was found to increase the sensitivity to carbon by approximately 3x. In addition, Sb-123C-12-C- was found to be less sensitive to carbon contamination present on as-received surfaces or incorporated from the analytical environment. RP GALUSKA, AA (reprint author), SANDIA NATL LABS,DIV 1823,ALBUQUERQUE,NM 87185, USA. NR 7 TC 3 Z9 3 U1 1 U2 1 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0142-2421 J9 SURF INTERFACE ANAL JI Surf. Interface Anal. PD JAN PY 1991 VL 17 IS 1 BP 15 EP 21 DI 10.1002/sia.740170106 PG 7 WC Chemistry, Physical SC Chemistry GA EV059 UT WOS:A1991EV05900004 ER PT J AU BAER, DR BLANCHARD, DL ENGELHARD, MH ZACHARA, JM AF BAER, DR BLANCHARD, DL ENGELHARD, MH ZACHARA, JM TI THE INTERACTION OF WATER AND MN WITH SURFACES OF CACO3 - AN XPS STUDY SO SURFACE AND INTERFACE ANALYSIS LA English DT Article ID CALCITE AB This paper reports an examination of the chemistry of single-crystal calcite (CaCO3) using x-ray photoelectron spectroscopy (XPS). The calcite cleavage surface was examined as freshly opened in vacuum and after several different treatments, including exposure to water vapor, covered with different amounts of evaporated Mn, ion sputtered and immersed in pure water. Clean and ion-sputtered calcite were not observed to react with water vapor. Ion sputtering caused significant changes to both oxygen and calcium bonding at the surface. However, immersion of sputtered calcite in water caused removal of the sputter damage and produced an XPS spectrum nearly indistinguishable from that of the fresh cleavage surface. The shapes and positions of the Mn and O peaks in the spectra of CaCO3 with submonolayer coverages of Mn indicate partial oxidation of the metal as deposited, presumably owing to reaction with the calcite surface. Immersion of the Mn-coated calcite in water caused further changes in the Mn peak, suggesting additional oxidation of the Mn. C1 PACIFIC NW LAB, DEPT GEOSCI, RICHLAND, WA 99352 USA. RP BAER, DR (reprint author), PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RI Engelhard, Mark/F-1317-2010; Baer, Donald/J-6191-2013 OI Baer, Donald/0000-0003-0875-5961 NR 13 TC 11 Z9 11 U1 0 U2 12 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0142-2421 J9 SURF INTERFACE ANAL JI Surf. Interface Anal. PD JAN PY 1991 VL 17 IS 1 BP 25 EP 30 DI 10.1002/sia.740170108 PG 6 WC Chemistry, Physical SC Chemistry GA EV059 UT WOS:A1991EV05900006 ER PT J AU WHITTEN, JE YOUNG, CE PELLIN, MJ GRUEN, DM JONES, PL AF WHITTEN, JE YOUNG, CE PELLIN, MJ GRUEN, DM JONES, PL TI ELECTRON-STIMULATED DESORPTION OF NEUTRALS FROM METHANOL-DOSED AL(111) - VELOCITY DISTRIBUTIONS AND ADSORBATE DECOMPOSITION DETERMINED BY NONRESONANT LASER IONIZATION SO SURFACE SCIENCE LA English DT Article ID KINETIC-ENERGY DISTRIBUTIONS; DRIVEN SURFACE-REACTIONS; METAL-SURFACES; FUNDAMENTAL MECHANISMS; ANGULAR-DISTRIBUTION; INDUCED FLUORESCENCE; PHYSISORBED LAYERS; ALUMINUM SURFACES; METHOXY RADICALS; CARBON-ATOMS AB Electron-stimulated desorption (ESD) of neutrals from methanol-dosed Al(111) is studied using laser ionization at 193 nm coupled with time-of-flight (TOF) mass spectrometry. At room temperature and at very low laser intensity, mass spectrometry of the neutral ESD species indicates the presence of desorbing CH3O, the methoxy radical. At higher laser intensity, this species is efficiently photolyzed to C+ and HCO+ fragments. The velocity distributions of these photofragments, indicative of the velocity distribution of the methoxy parent, are measured for methanol dosed onto both clean and pre-oxidized single crystal surfaces. Both of the surfaces yield similar non-Boltzmann distributions with peak velocities of approximately 900 m/s, corresponding to a peak kinetic energy of approximately 0.1 eV for the methoxy parent. The similar results may find explanation in terms of oxidation of the Al(111) surface by the initial methanol exposure. The major ionic desorbate observed from this methanol-dosed Al(111) is H+, and its kinetic energy distribution peaks at approximately 4 eV, a value which is typical of that observed in other ESD studies of ionic desorbates. The order of magnitude difference in kinetic energies between the desorbed ions and neutrals is discussed in terms of possible desorption mechanisms. Neutral ESD, combined with X-ray photoelectron spectroscopy (XPS) is also used as a probe of changes in surface adsorbate composition as a function of temperature and of electron beam dose for methanol/Al(111). The surface concentration of the methoxy species, as monitored via the HCO+ photofragment, is found to decrease linearly with increasing temperature. An increase in C+ signal at approximately 470 K is attributed to the formation of a thermal decomposition product with either a higher desorption cross section or a higher laser ionization/fragmentation cross section than the methoxy species. Electron beam damage studies of the methoxy/aluminum system at an electron beam energy of 3 keV give a cross section of 3 +/- 1 x 10(-17) cm2 for loss of methoxy from the surface at this energy. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. SPECTRA TECHNOL INC,BELLEVUE,WA 98004. RP WHITTEN, JE (reprint author), OHIO STATE UNIV,DEPT CHEM,COLUMBUS,OH 43210, USA. RI Pellin, Michael/B-5897-2008 OI Pellin, Michael/0000-0002-8149-9768 NR 84 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JAN PY 1991 VL 241 IS 1-2 BP 73 EP 90 DI 10.1016/0039-6028(91)90213-C PG 18 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA EX669 UT WOS:A1991EX66900015 ER PT J AU RICHARDS, PM AF RICHARDS, PM TI EFFECT OF DIFFERENT ADATOM HOPPING PROCESSES ON STEADY-STATE ROUGHNESS DURING GROWTH BY MOLECULAR-BEAM EPITAXY SO SURFACE SCIENCE LA English DT Article ID MONTE-CARLO; OSCILLATIONS; DIFFRACTION; MECHANISM; KINETICS; SURFACES; MBE AB Steady state interface width is calculated for random deposition by molecular beam epitaxy (MBE). Arbitrary rates for noninteracting adatoms to diffuse (W(tr)) across a terrace of equal atomic heights and jump (W(ed)) off a terrace edge to the next terrace below are considered. This extends an earlier work by the author which had W(tr) = W(ed). Both analytic theory and Monte Carlo simulations are used. The width sigma-2(L) depends on the linear size L of the region under investigation, being logarithmic sigma-2(L) proportional ln L for a planar d = 2 substrate and linear sigma-2(L) proportional L for a linear d = 1 substrate. This dependence holds even for no terrace diffusion, W(tr) = 0. For a planar substrate the slope d-sigma-2(L)/d ln L likely goes to zero as 1/W(tr) for large W(tr); but the behavior of d-sigma-2(L)/d L with large W(tr) is less certain for a one dimensional substrate. Estimates are made for how W(tr) influences the value of L beyond which size dependence becomes of practical importance. RP RICHARDS, PM (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 17 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JAN PY 1991 VL 241 IS 3 BP 378 EP 394 DI 10.1016/0039-6028(91)90098-D PG 17 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA EX943 UT WOS:A1991EX94300016 ER PT J AU SHAM, TK SHEK, ML HRBEK, J AF SHAM, TK SHEK, ML HRBEK, J TI COVERAGE DEPENDENT CORE-LEVEL SHIFTS OF CS ADSORBED ON RU(001) AND OBSERVATION OF SURFACE-DEFECTS WITH A CS PROBE SO SURFACE SCIENCE LA English DT Letter ID METAL-SURFACES; ELECTRONIC-STRUCTURE; PT(111) SURFACE; WORK-FUNCTION; PHOTOEMISSION; POTASSIUM; ELEMENTS; CHEMISORPTION; SPECTROSCOPY; ADSORPTION AB Adsorption of Cs on Ru(001) with coverages varying from multilayer to less than 10(-3) of a monolayer has been studied with Cs4d core level photoemission. Using photon energy optimized for adsorbate and substrate cross sections, detection sensitivity of 10(-3) of a monolayer has been obtained. The most important finding is that as the Cs coverage decreases from a full monolayer (square-root-3 X square-root-3 R30-degrees LEED) to 10(-3) of a monolayer, the Cs4d level shifts slightly away from the Fermi level (the entire range is 0.25 eV) until the Cs atoms on the surface are farther apart than they are in the bulk; this shift is accompained by the appearance of a low binding energy shoulder which becomes a dominant peak at coverages below 0.02 ML. These results, together with LEED and thermal desorption observations are discussed in terms of charge redistribution (hybridization), volume, and relaxation effects in the spirit of recent theoretical and experimental results. In this model, the charge state of the alkali atoms on the surface is essentially neutral (metallic), and is insensitive to coverage. The low binding energy peak emerging at lower coverages appears to have its origins in surface defects of a good Ru(001) single crystal with a well-defined LEED pattern. C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. RP SHAM, TK (reprint author), UNIV WESTERN ONTARIO,DEPT CHEM,LONDON N6A 5B7,ONTARIO,CANADA. RI Hrbek, Jan/I-1020-2013 NR 32 TC 5 Z9 5 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD JAN PY 1991 VL 241 IS 1-2 BP L16 EP L20 PG 5 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA EX669 UT WOS:A1991EX66900004 ER PT J AU LOMBARDO, SJ BELL, AT AF LOMBARDO, SJ BELL, AT TI A REVIEW OF THEORETICAL-MODELS OF ADSORPTION, DIFFUSION, DESORPTION, AND REACTION OF GASES ON METAL-SURFACES SO SURFACE SCIENCE REPORTS LA English DT Review ID TRANSITION-STATE THEORY; TEMPERATURE-PROGRAMMED DESORPTION; PRE-EXPONENTIAL FACTOR; SINGLE-CRYSTAL PLANES; DISSOCIATIVE HYDROGEN ADSORPTION; ADSORBATE LATERAL INTERACTIONS; LANGMUIR-HINSHELWOOD REACTION; LANGEVIN EQUATION APPROACH; PHONON-INDUCED DESORPTION; POTENTIAL-ENERGY SURFACE AB A review is presented of the theoretical approaches available for describing the kinetics of gas adsorption, diffusion, desorption, and reaction on metal surfaces. The prediction of rate and diffusion coefficients based on molecular dynamics, transition-state theory, stochastic diffusion theory, and quantum mechanics is discussed, and the success of these theoretical approaches in representing experimental observation is examined. Consideration is also given to the effects of lateral interactions between adsorbates and to the ability of lattic-gas models to provide a representation of the dependences of rate and diffusion coefficients on adsorbate coverage. Finally, the utility of continuum and Monte Carlo models for describing the kinetics of complex surface processes in terms of elementary processes is addressed. C1 UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. RP LOMBARDO, SJ (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720, USA. NR 212 TC 188 Z9 188 U1 3 U2 70 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-5729 J9 SURF SCI REP JI Surf. Sci. Rep. PY 1991 VL 13 IS 1-2 BP 1 EP 72 PG 72 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA FZ564 UT WOS:A1991FZ56400001 ER PT B AU KIM, SH KANG, CH CHO, JM AF KIM, SH KANG, CH CHO, JM BE WALTERS, DE ORTHOEFER, FT DUBOIS, GE TI SWEET PROTEINS - BIOCHEMICAL-STUDIES AND GENETIC-ENGINEERING SO SWEETENERS: DISCOVERY, MOLECULAR DESIGN, AND CHEMORECEPTION SE ACS SYMPOSIUM SERIES LA English DT Proceedings Paper CT SYMP AT THE 199TH NATIONAL MEETING OF THE AMERICAN CHEMICAL SOC - SWEETENERS : DISCOVERY, MOLECULAR DESIGN, AND CHEMORECEPTION CY APR 22-27, 1990 CL BOSTON, MA SP AMER CHEM SOC, DIV AGR & FOOD CHEM ID TASTING PROTEINS; THAUMATIN-I; DIOSCOREOPHYLLUM-CUMMINSII; MONELLIN; PRINCIPLE RP KIM, SH (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720, USA. NR 0 TC 30 Z9 30 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA WASHINGTON BN 0-8412-1903-6 J9 ACS SYM SER PY 1991 VL 450 BP 28 EP 40 PG 13 WC Biochemistry & Molecular Biology; Food Science & Technology; Physiology SC Biochemistry & Molecular Biology; Food Science & Technology; Physiology GA BS49K UT WOS:A1991BS49K00003 ER PT J AU SILKS, LA ODOM, JD DUNLAP, RB AF SILKS, LA ODOM, JD DUNLAP, RB TI SYNTHESIS AND TE-125 NMR-SPECTROSCOPY OF ALPHA-TELLUROCARBONYL COMPOUNDS AND DERIVATIVES SO SYNTHETIC COMMUNICATIONS LA English DT Article ID SODIUM HYDROGEN TELLURIDE; ORGANOTELLURIUM CHEMISTRY; TELLUROLATE REAGENT; REDUCTIVE REMOVAL; KETONES; SUBSTITUENTS; ACIDS AB The reaction of lithium alkyl-, alkenyl-, alkynyl-, and aryl tellurolates with alpha-bromocarbonyl compounds in anhydrous tetrahydrofuran gives the title compounds in yields ranging from 55-92%. The Te-125 NMR chemical shift range for these compounds is 405-1024 ppm. C1 UNIV S CAROLINA,DEPT CHEM,COLUMBIA,SC 29208. RP SILKS, LA (reprint author), LOS ALAMOS NATL LAB,NIH,NATL STABLE ISOTOPES RESOURCE,INC-4,MS C-345,LOS ALAMOS,NM 87545, USA. NR 24 TC 13 Z9 13 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0039-7911 J9 SYNTHETIC COMMUN JI Synth. Commun. PY 1991 VL 21 IS 8-9 BP 1105 EP 1119 DI 10.1080/00397919108019802 PG 15 WC Chemistry, Organic SC Chemistry GA FT878 UT WOS:A1991FT87800020 ER PT B AU EDMONDS, CG LOO, JA LOO, RRO SMITH, RD AF EDMONDS, CG LOO, JA LOO, RRO SMITH, RD BE VILLAFRANCA, JJ TI ELECTROSPRAY IONIZATION MASS-SPECTROMETRY AND TANDEM MASS-SPECTROMETRY FOR THE CHARACTERIZATION OF PROTEINS AND PROTEOLYTIC DIGESTS SO TECHNIQUES IN PROTEIN CHEMISTRY II LA English DT Proceedings Paper CT 4TH ANNUAL SYMP OF THE PROTEIN SOC CY AUG 11-15, 1990 CL SAN DIEGO, CA SP PROTEIN SOC, A A A LAB, APPL BIOSYST, A V I V ASSOC, BECKMAN INSTRUMENTS, BIOSYM TECHNOL, BRISTOL MYERS SQUIBB PHARM RES INST, DUPONT CO, ELI LILLY & CO, FINNIGAN RP EDMONDS, CG (reprint author), BATTELLE MEM INST,PACIFIC NW LABS,RICHLAND,WA 99352, USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 0 TC 1 Z9 1 U1 0 U2 0 PU ACADEMIC PRESS INC PI SAN DIEGO PA SAN DIEGO BN 0-12-721957-9 PY 1991 BP 487 EP 495 PG 9 WC Biochemistry & Molecular Biology; Medical Laboratory Technology; Medicine, Research & Experimental SC Biochemistry & Molecular Biology; Medical Laboratory Technology; Research & Experimental Medicine GA BT33C UT WOS:A1991BT33C00047 ER PT J AU KOCKS, UF KALLEND, JS BIONDO, AC AF KOCKS, UF KALLEND, JS BIONDO, AC TI ACCURATE REPRESENTATIONS OF GENERAL TEXTURES BY A SET OF WEIGHTED GRAINS SO TEXTURES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON TEXTURES OF MATERIALS ( ICOTOM 9 ) CY SEP 17-21, 1990 CL AVIGNON, FRANCE SP SOC FRANCAISE MET MAT C1 IIT,DEPT MET & MAT ENGN,CHICAGO,IL 60616. RP KOCKS, UF (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,CTR MAT SCI,MAIL STOP K765,LOS ALAMOS,NM 87545, USA. RI Kocks, Fred/E-1159-2011 NR 8 TC 17 Z9 17 U1 0 U2 3 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 199 EP 204 DI 10.1155/TSM.14-18.199 PN 1-2 PG 6 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ591 UT WOS:A1991HJ59100032 ER PT J AU ROLLETT, AD WENK, HR HEIDELBACH, F SCHOFIELD, TG MUENSCHAUSEN, RE RAISTRICK, ID ARENDT, PN KORZEKWA, DA BENNETT, K KALLEND, JS AF ROLLETT, AD WENK, HR HEIDELBACH, F SCHOFIELD, TG MUENSCHAUSEN, RE RAISTRICK, ID ARENDT, PN KORZEKWA, DA BENNETT, K KALLEND, JS TI TEXTURE-PROPERTY RELATIONSHIPS IN THE HIGH-TEMPERATURE SUPERCONDUCTORS SO TEXTURES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON TEXTURES OF MATERIALS ( ICOTOM 9 ) CY SEP 17-21, 1990 CL AVIGNON, FRANCE SP SOC FRANCAISE MET MAT ID THIN-FILMS; YBA2CU3O7-DELTA; DEPOSITION C1 IIT,CHICAGO,IL 60616. UNIV CALIF BERKELEY,BERKELEY,CA 94720. RP ROLLETT, AD (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. RI Rollett, Anthony/A-4096-2012 OI Rollett, Anthony/0000-0003-4445-2191 NR 14 TC 2 Z9 2 U1 0 U2 1 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 355 EP 362 DI 10.1155/TSM.14-18.355 PN 1-2 PG 8 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ591 UT WOS:A1991HJ59100049 ER PT J AU NECKER, CT DOHERTY, RD ROLLETT, AD AF NECKER, CT DOHERTY, RD ROLLETT, AD TI QUANTITATIVE MEASUREMENT OF THE DEVELOPMENT OF RECRYSTALLIZATION TEXTURE IN OFE COPPER SO TEXTURES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON TEXTURES OF MATERIALS ( ICOTOM 9 ) CY SEP 17-21, 1990 CL AVIGNON, FRANCE SP SOC FRANCAISE MET MAT ID METALS; KINETICS C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87544. RP NECKER, CT (reprint author), DREXEL UNIV,DEPT MAT ENGN,PHILADELPHIA,PA 19104, USA. RI Rollett, Anthony/A-4096-2012 OI Rollett, Anthony/0000-0003-4445-2191 NR 14 TC 45 Z9 46 U1 0 U2 3 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 635 EP 640 DI 10.1155/TSM.14-18.635 PN 3-4 PG 6 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ593 UT WOS:A1991HJ59300026 ER PT J AU BRODESSER, S CHEN, S GOTTSTEIN, G AF BRODESSER, S CHEN, S GOTTSTEIN, G TI MICROSTRUCTURE AND MICROTEXTURE DEVELOPMENT DURING HIGH-TEMPERATURE LOW-CYCLE FATIGUE SO TEXTURES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON TEXTURES OF MATERIALS ( ICOTOM 9 ) CY SEP 17-21, 1990 CL AVIGNON, FRANCE SP SOC FRANCAISE MET MAT ID MIGRATION C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. RP BRODESSER, S (reprint author), RHEIN WESTFAL TH AACHEN,INST MET KUNDE & MET PHYS,KOPERNIKUSSTR 14,W-5100 AACHEN,GERMANY. NR 6 TC 1 Z9 1 U1 0 U2 0 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 829 EP 834 DI 10.1155/TSM.14-18.829 PN 3-4 PG 6 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ593 UT WOS:A1991HJ59300057 ER PT J AU KOCKS, UF FRANCIOSI, P KAWAI, M AF KOCKS, UF FRANCIOSI, P KAWAI, M TI A FOREST MODEL OF LATENT HARDENING AND ITS APPLICATION TO POLYCRYSTAL DEFORMATION SO TEXTURES AND MICROSTRUCTURES LA English DT Article ID SINGLE-CRYSTALS; ALUMINUM C1 UNIV PARIS 13, PMTM LAB, F-93430 VILLETANEUSE, FRANCE. UNIV TSUKUBA, INST ENGN MECH, TSUKUBA, IBARAKI 305, JAPAN. RP KOCKS, UF (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, CTR MAT SCI, MAIL STOP K765, LOS ALAMOS, NM 87545 USA. RI Kocks, Fred/E-1159-2011 NR 13 TC 19 Z9 20 U1 0 U2 2 PU GORDON BREACH PUBLISHING, TAYLOR & FRANCIS GROUP PI PHILADELPHIA PA 325 CHESTNUT ST, 8TH FL, PHILADELPHIA, PA 19106 USA SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 1103 EP 1114 DI 10.1155/TSM.14-18.1103 PN 5 PG 12 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ594 UT WOS:A1991HJ59400025 ER PT J AU KALLEND, JS KOCKS, UF ROLLETT, AD WENK, HR AF KALLEND, JS KOCKS, UF ROLLETT, AD WENK, HR TI POPLA - AN INTEGRATED SOFTWARE SYSTEM FOR TEXTURE ANALYSIS SO TEXTURES AND MICROSTRUCTURES LA English DT Article; Proceedings Paper CT 9TH INTERNATIONAL CONF ON TEXTURES OF MATERIALS CY SEP 17-21, 1990 CL AVIGNON, FRANCE ID ORIENTATION C1 UNIV CALIF BERKELEY,BERKELEY,CA 94720. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP KALLEND, JS (reprint author), IIT,CHICAGO,IL 60616, USA. RI Rollett, Anthony/A-4096-2012; Kocks, Fred/E-1159-2011 OI Rollett, Anthony/0000-0003-4445-2191; NR 9 TC 19 Z9 19 U1 0 U2 2 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0730-3300 J9 TEXTURE MICROSTRUCT JI Textures Microstruct. PY 1991 VL 14 BP 1203 EP 1208 DI 10.1155/TSM.14-18.1203 PN 5 PG 6 WC Crystallography; Materials Science, Multidisciplinary SC Crystallography; Materials Science GA HJ594 UT WOS:A1991HJ59400040 ER PT J AU TAHA, H AKBARI, H ROSENFELD, A AF TAHA, H AKBARI, H ROSENFELD, A TI HEAT-ISLAND AND OASIS EFFECTS OF VEGETATIVE CANOPIES - MICRO-METEOROLOGICAL FIELD-MEASUREMENTS SO THEORETICAL AND APPLIED CLIMATOLOGY LA English DT Article AB Dry-bulb temperature, dew-point, wind speed, and wind direction were measured in and around an isolated vegetative canopy in Davis CA from 12 to 25 October 1986. These meteorological variables were measured 1.5 m above ground along a transect of 7 weather stations set up across the canopy and the upwind/downwind open fields. These variables were averaged every 15 minutes for a period of two weeks so we could analyze their diurnal cycles as well as their spatial variability. The results indicate significant nocturnal heat islands and daytime oases within the vegetation stand, especially in clear weather. Inside the canopy within 5 m of its upwind edge, daytime temperature fell by as much as 4.5-degrees-C, whereas the nighttime temperature rose by 1-degrees-C. Deeper into the canopy and downwind, the daytime drop in temperature reached 6-degrees-C, and the nighttime increase reached 2-degrees-C. Wind speed was reduced by approximately 2 m s-1 in mild conditions and by as much as 6.7 m s-1 during cyclonic weather when open-field wind speed was in the neighborhood of 8 m s-1. Data from this project were used to construct correlations between temperature and wind speed within the canopy and their corresponding ambient, open-field values. RP TAHA, H (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV APPL SCI,HEAT ISLAND PROJECT,BLDG 90,MS 90-4000,BERKELEY,CA 94720, USA. NR 13 TC 50 Z9 62 U1 2 U2 25 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA SN 0177-798X J9 THEOR APPL CLIMATOL JI Theor. Appl. Climatol. PY 1991 VL 44 IS 2 BP 123 EP 138 DI 10.1007/BF00867999 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA GL667 UT WOS:A1991GL66700005 ER PT J AU MANOS, DM CECCHI, JL CHEAH, CW DYLLA, HF AF MANOS, DM CECCHI, JL CHEAH, CW DYLLA, HF TI DIAGNOSTICS OF LOW-TEMPERATURE PLASMAS - THE ELECTRON COMPONENT SO THIN SOLID FILMS LA English DT Article ID CYCLOTRON RESONANCE PLASMA; THIN-FILM DEPOSITION; GLOW-DISCHARGE; DENSITY AB This paper reviews three different methods that may be used for measurement of the electron densities and temperatures in low-temperature process plasmas: electrostatic probes, microwave interferometry, and Thomson scattering. Each has certain advantages: probes offer high spatial resolution, but are invasive and can be difficult to interpret; microwaves offer high time resolution and ease of interpretation, but offer only limited spatial information; Thomson scattering gives high spatial resolution and is non-invasive, but is practically restricted to densities above 10(11) cm-3. RP MANOS, DM (reprint author), PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 45 TC 8 Z9 8 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD JAN PY 1991 VL 195 IS 1-2 BP 319 EP 336 DI 10.1016/0040-6090(91)90283-4 PG 18 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA EW073 UT WOS:A1991EW07300032 ER PT J AU MCCLANAHAN, ED LAEGREID, N AF MCCLANAHAN, ED LAEGREID, N TI PRODUCTION OF THIN-FILMS BY CONTROLLED DEPOSITION OF SPUTTERED MATERIAL SO TOPICS IN APPLIED PHYSICS LA English DT Review ID ION-BOMBARDMENT; ANGULAR-DISTRIBUTION; CU; DC; PLASMATRON; MAGNETRONS; COATINGS; ALLOYS; OXYGEN; ATOMS RP PACIFIC NW LAB, ADV MAT SECT, POB 999,BATTELLE BLVD, RICHLAND, WA 99352 USA. NR 145 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0303-4216 J9 TOP APPL PHYS JI Top. Appl. Phys. PY 1991 VL 64 BP 339 EP 377 PG 39 WC Physics, Applied SC Physics GA GM728 UT WOS:A1991GM72800007 ER PT J AU ENGLAND, MW FAUST, JB WILKERSON, EK JACOBSON, KB AF ENGLAND, MW FAUST, JB WILKERSON, EK JACOBSON, KB TI STRONTIUM TOXICITY IN DROSOPHILA-MELANOGASTER SO TOXICOLOGY LA English DT Article DE DROSOPHILA; LD50; STRONTIUM; 2ND CHROMOSOME ID CADMIUM AB The Drosophila strains v;bw and Austin represent the extremes in resistance and sensitivity, respectively, to the toxic effects of CdCl2 in the diet. Using the six genotypes containing the possible combinations of the three main chromosomes for v;bw and Austin, we had shown previously that the gene(s) for cadmium resistance is on the X-chromosome. In this paper it is shown, using the same six genotypes, that the gene(s) for strontium resistance is on the second chromosome, as measured by LC50 values. C1 DUKE UNIV,MED CTR,DEPT PHARMACOL,DURHAM,NC 27710. OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831. RP ENGLAND, MW (reprint author), OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,BLDG 4500S,MS-6123,POB 2008,OAK RIDGE,TN 37831, USA. NR 14 TC 2 Z9 2 U1 1 U2 2 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0300-483X J9 TOXICOLOGY JI Toxicology PD JAN PY 1991 VL 65 IS 3 BP 251 EP 257 DI 10.1016/0300-483X(91)90084-E PG 7 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA EY052 UT WOS:A1991EY05200002 PM 1899493 ER PT J AU RINCHIK, EM AF RINCHIK, EM TI CHEMICAL MUTAGENESIS AND FINE-STRUCTURE FUNCTIONAL-ANALYSIS OF THE MOUSE GENOME SO TRENDS IN GENETICS LA English DT Article ID RECESSIVE LETHAL MUTATIONS; DROSOPHILA-MELANOGASTER; LARVAL CUTICLE; ZYGOTIC LOCI; X-CHROMOSOME; ETHYLNITROSOUREA MUTAGENESIS; MOLECULAR-GENETICS; QUAKING LOCUS; GERM-CELLS; MALE MICE AB Heritable mutations constitute important raw materials for mammalian developmental genetics and general genome studies. Mutations induced by high-efficiency chemical mutagenesis of germ cells in mice can be used in genetic and molecular studies to complement physical-mapping strategies and to examine the nature and extent of the functional complexities hidden within the mammalian genome. RP RINCHIK, EM (reprint author), OAK RIDGE NATL LAB,DIV BIOL,POB 2009,OAK RIDGE,TN 37831, USA. FU NHGRI NIH HHS [HG 00370] NR 45 TC 95 Z9 96 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0168-9525 J9 TRENDS GENET JI Trends Genet. PD JAN PY 1991 VL 7 IS 1 BP 15 EP 21 DI 10.1016/0168-9525(91)90016-J PG 7 WC Genetics & Heredity SC Genetics & Heredity GA EP913 UT WOS:A1991EP91300005 PM 2003334 ER PT J AU WHEELER, R AF WHEELER, R TI ELECTROPOLISHING OF POLYCRYSTALLINE AND SINGLE-CRYSTAL YBA2CU3O7-DELTA FOR TEM STUDIES SO ULTRAMICROSCOPY LA English DT Note AB The use of a jet-polishing technique to prepare high-quality thin foils of both polycrystalline and single-crystal YBa2Cu3O7-delta for study in the transmission electron microscope is demonstrated. The technique is shown to be ideal for conventionally processed sintered material where limited porosity exists as well as single crystals having dimensions of 0.5 mm and larger along the [100] and [010] directions. RP WHEELER, R (reprint author), ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCOND,ARGONNE,IL 60439, USA. NR 3 TC 10 Z9 10 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 JAN PY 1991 VL 35 IS 1 BP 59 EP 64 DI 10.1016/0304-3991(91)90045-8 PG 6 WC Microscopy SC Microscopy GA FE984 UT WOS:A1991FE98400008 ER PT J AU MILLER, DL THOMAS, RM WILLIAMS, AR AF MILLER, DL THOMAS, RM WILLIAMS, AR TI MECHANISMS FOR HEMOLYSIS BY ULTRASONIC CAVITATION IN THE ROTATING EXPOSURE SYSTEM SO ULTRASOUND IN MEDICINE AND BIOLOGY LA English DT Article DE ULTRASOUND; BIOEFFECTS; CAVITATION; HEMOLYSIS ID CELL-LYSIS; BUBBLES; TUBE; EXPLANATION AB The rotating chamber provides a useful system for enhancing cavitation bioeffects so that they may be more easily studied. A tube with acoustically transparent windows was rotated at 72 rpm perpendicular to its axis. The 1.61 MHz ultrasound beam was switched on and off in 42 ms bursts to expose the chamber while it was aligned with the beam. The hemolysis of 0.5% suspensions of canine erythrocytes was used as a measure of the efficacy of this rotating exposure system. Use of dialysis membrane, agar plugs, plastic sealing film or wax film for the windows produced no differences in the results for exposure intensities above an apparent threshold of 2-2.8 W/cm2, up to 16 W/cm2, at which essentially 100% lysis was observed. Changing the tube length from 1.4 cm to 4 cm, or partitioning it into three 0.5 cm segments had little influence on the results, but a short 0.5 cm chamber had reduced efficacy. Pressurizing the suspension filled chamber at 10 MPa to reduce the population of cavitation nuclei reduced the hemolysis. Separately pressurizing the suspension or the chamber produced indistinguishable, smaller reductions in hemolysis. The results lead to the hypothesis that the hemolysis occurs primarily in the bulk of the medium (rather than on surfaces). Bubbles recycled by rotation into the medium move toward the back of the chamber at estimated speeds of 10 m/s, generating hydrodynamic stresses sufficient to cause the observed hemolysis. C1 MANCHESTER POLYTECH, MANCHESTER M15 6BH, LANCS, ENGLAND. RP MILLER, DL (reprint author), PACIFIC NW LAB, RICHLAND, WA 99352 USA. FU NCI NIH HHS [CA42947] NR 17 TC 36 Z9 37 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0301-5629 J9 ULTRASOUND MED BIOL JI Ultrasound Med. Biol. PY 1991 VL 17 IS 2 BP 171 EP 178 DI 10.1016/0301-5629(91)90124-F PG 8 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA FD006 UT WOS:A1991FD00600008 PM 2053213 ER PT J AU MILLER, DL THOMAS, RM FRAZIER, ME AF MILLER, DL THOMAS, RM FRAZIER, ME TI SINGLE-STRAND BREAKS IN CHO CELL-DNA INDUCED BY ULTRASONIC CAVITATION INVITRO SO ULTRASOUND IN MEDICINE AND BIOLOGY LA English DT Article DE ULTRASOUND; ULTRASONIC CAVITATION; DNA SINGLE STRAND BREAKS; GENETIC EFFECTS ID MAMMALIAN-CELLS; DAMAGE; EMISSION; EXPOSURE AB Ultrasonic cavitation induces a multiplicity of bioeffects in cell suspensions exposed in a 72 RPM rotating-tube exposure system. Single strand DNA breaks (SSBs) were found in cultured Chinese hamster ovary (CHO) cells exposed directly to 1.61 MHz ultrasound at a continuous 8 W/cm2 spatial peak, temporal average (SPTA) intensity with cavitation for 10 min at 2-degrees-C. Viability assessed by the trypan blue test was less than 1%, which indicates that these SSBs were in dead cells. Burst mode exposure with 10.5-mu-s bursts repeated each 21-mu-s not only caused SSBs at 5.6 W/cm2 and 8 W/cm2 (SPTA) for 10 min, but also allowed 20% and 7% viability, respectively. In order to determine if any of these breaks resided in the viable fraction of cells, the exposures were repeated with a 30 min postexposure incubation period at 37-degrees-C to allow breaks in viable cells to repair. No significant repair occurred, relative to the samples which remained at 2-degrees-C to prevent repair. A similar result was obtained with 10.5-mu-s bursts repeated each 42-mu-s at 4 W/cm2 (SPTA) with 46% viability. Thus, the observed ultrasonically induced SSBs reside primarily in the nonviable fraction of cells. RP MILLER, DL (reprint author), PACIFIC NW LAB, DEPT BIOL & CHEM, RICHLAND, WA 99352 USA. FU NCI NIH HHS [CA 42947] NR 26 TC 33 Z9 33 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0301-5629 J9 ULTRASOUND MED BIOL JI Ultrasound Med. Biol. PY 1991 VL 17 IS 4 BP 401 EP 406 DI 10.1016/0301-5629(91)90140-R PG 6 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA GA349 UT WOS:A1991GA34900010 PM 1949351 ER PT J AU MILLER, DL THOMAS, RM FRAZIER, ME AF MILLER, DL THOMAS, RM FRAZIER, ME TI ULTRASONIC CAVITATION INDIRECTLY INDUCES SINGLE-STRAND BREAKS IN DNA OF VIABLE CELLS-INVITRO BY THE ACTION OF RESIDUAL HYDROGEN-PEROXIDE SO ULTRASOUND IN MEDICINE AND BIOLOGY LA English DT Article DE ULTRASONIC CAVITATION; HYDROGEN PEROXIDE; DNA DAMAGE ID SISTER-CHROMATID EXCHANGES; MAMMALIAN-CELLS; MUTATION; CONFIRMATION; CYSTEAMINE; INDUCTION; RADICALS; REPAIR; DAMAGE AB Direct exposure of cells to vigorous ultrasonic cavitation results predominantly in mechanical cell lysis, but latent effects due to production of toxic sonochemicals can also be present. Phosphate buffered saline (PBS) was exposed to 1.61 MHZ ultrasonic cavitation at 20-degrees-C in a rotating tube exposure system to build up sonochemical products. Single strand DNA breaks (SSBs) were then induced by treating Chinese hamster ovary (CHO) cells with the cavitated PBS for 30 min on ice. The SSBs resided in viable cells, as evidenced by their ability to repair the breaks when warmed. This indirect effect could be explained by the action of cavitation-generated hydrogen peroxide that had built up (eg., to 16-mu-M after 30 min exposure) in the PBS. Dissolution of argon gas in the PBS before exposure enhanced the SSB effect and the H2O2 production. Addition of catalase to the cavitated PBS before cell treatment eliminated the H2O2 and the SSB effect. Tests with hydrogen peroxide showed that 16-mu-M H2O2 treatment for 30 min on ice was as effective as a 1 Gy dose of Co-60 gamma rays in producing single strand breaks. The SSB effect of H2O2 and gamma rays was reduced by addition of the radical scavenger cysteamine to the cells before treatment, but cysteamine did not reduce the SSB effect of direct exposure to ultrasonic cavitation. These results help to clarify the potential for genetic effects from ultrasonic cavitation. RP MILLER, DL (reprint author), PACIFIC NW LAB, DEPT BIOL & CHEM, RICHLAND, WA 99352 USA. FU NCI NIH HHS [CA42947] NR 29 TC 61 Z9 67 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0301-5629 J9 ULTRASOUND MED BIOL JI Ultrasound Med. Biol. PY 1991 VL 17 IS 7 BP 729 EP 735 DI 10.1016/0301-5629(91)90106-7 PG 7 WC Acoustics; Radiology, Nuclear Medicine & Medical Imaging SC Acoustics; Radiology, Nuclear Medicine & Medical Imaging GA GR500 UT WOS:A1991GR50000011 PM 1781077 ER PT J AU HALAMA, HJ FOERSTER, CL AF HALAMA, HJ FOERSTER, CL TI COMPARISON OF PHOTODESORPTION YIELDS FROM ALUMINUM, STAINLESS AND CU-PLATED BEAM TUBES SO VACUUM LA English DT Article AB Photon Stimulated Desorption (PSD) from the walls of beam ducts constitutes the most serious gas load in storage rings and therefore exerts a great influence on both beam quality and lifetime. With the exception of the SSC which plans to use a Cu-plated beam tube, all existing and proposed machines use either aluminum or stainless steel beam tubes. In order to develop techniques for producing surfaces with the lowest PSD, we have studied the above materials using a dedicated beam line at the National Synchrotron Light Source (NSLS). Three meter long tubes were exposed to white light beams having critical energy of 500 eV and the desorption yields were measured as a function of beam dose. Several treatments commonly used for cleaning surfaces (prebaked, baked, fired, chemically cleaned and dc glow discharged) were investigated, and their relative merits are discussed. The results from sample tube measurements are compared with those from the X-ray ring Al beam tube during operation. The agreement is found to be quite good. Glow discharge cleaned stainless steel exhibited the lowest desorption yield. RP HALAMA, HJ (reprint author), BROOKHAVEN NATL LAB,NATL SYNCHORTON LIGHT SOURCE,UPTON,NY 11973, USA. NR 7 TC 10 Z9 10 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0042-207X J9 VACUUM JI Vacuum PY 1991 VL 42 IS 3 BP 185 EP 188 DI 10.1016/0042-207X(91)91815-6 PG 4 WC Materials Science, Multidisciplinary; Physics, Applied SC Materials Science; Physics GA EP909 UT WOS:A1991EP90900001 ER PT J AU TSUBURA, A OKADA, H SASAKI, M DAIRKEE, SH MORII, S AF TSUBURA, A OKADA, H SASAKI, M DAIRKEE, SH MORII, S TI IMMUNOHISTOCHEMICAL DEMONSTRATION OF KERATINS 8 AND 14 IN BENIGN-TUMORS OF THE SKIN APPENDAGE SO VIRCHOWS ARCHIV A-PATHOLOGICAL ANATOMY AND HISTOPATHOLOGY LA English DT Article DE KERATIN; MONOCLONAL ANTIBODY; IMMUNOHISTOCHEMISTRY; SKIN APPENDAGE TUMOR ID SWEAT GLAND TUMORS; MONOCLONAL-ANTIBODIES; CARCINOEMBRYONIC ANTIGEN; HUMAN-BREAST; EPITHELIA; PROTEINS; CELLS; FORMALIN; PATTERNS AB The expression of keratins 8 and 14 was investigated immunohistochemically by the avidin-biotin-peroxidase (ABC) method using formalin-fixed paraffinembedded specimens from 42 tumours of human skin appendages. Results were compared with the staining of 34 specimens from normal skin and skin appendages adjacent to the tumours. Keratin 14 was detected by the monoclonal antibody (mAb) 312C8-1, and was found in the basal cells of the epidermis, the outer root sheaths of hair follicles, and the peripheral cells of sebaceous glands. It was also detected in the inner and outer layers of cells in the ductal portion and the myoepithelial cells in the secretory portion of apocrine and eccrine sweat glands. Keratin 8 was detected by mAb 35BH11, and was present in the secretory cells of eccrine and apocrine sweat glands but not in myoepithelial or ductal cells. The pilosebaceous apparatus and the epidermis were uniformly negative. In benign skin appendage tumours, the staining patterns for both keratins generally resembled their distribution in the corresponding normal tissues. The demonstration of keratins 8 and 14 may be useful in the recognition, classification and diagnosis of skin appendage tumours. C1 OSAKA RED CROSS HOSP,DIV PATHOL,OSAKA 553,JAPAN. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP TSUBURA, A (reprint author), KANSAI MED UNIV,DEPT PATHOL,MORIGUCHI,OSAKA 570,JAPAN. RI Dairkee, Shanaz/D-6743-2012 NR 20 TC 36 Z9 37 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0174-7398 J9 VIRCHOWS ARCH A JI Virchows Arch. A-Pathol. Anat. Histopathol. PY 1991 VL 418 IS 6 BP 503 EP 507 DI 10.1007/BF01606500 PG 5 WC Anatomy & Morphology; Pathology SC Anatomy & Morphology; Pathology GA FR751 UT WOS:A1991FR75100006 PM 1711732 ER PT J AU CHOI, M AF CHOI, M TI A STUDY OF HEAT-TRANSFER FOR SINGLE AND DOUBLE-LAYER INCLINED SYNCHROTRON RADIATION ABSORBERS SO WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS LA English DT Article ID DESORPTION AB The heat transfer phenomena for single and double layer inclined absorbers which absorb synchrotron radiation has been studied using analytical and numerical methods. Photon penetration through the metal layers has been included and the effects of the spectral variation of the absorption coefficients and variable thermal conductivities have been examined. Different thickness ratios and inclination angles have been studied for double layer absorbers and it has been shown that double layer inclined absorbers significantly reduce the peak temperatures. RP CHOI, M (reprint author), ARGONNE NATL LAB,DIV ADV PHOTON SOURCE,9700 S CASS AV,ARGONNE,IL 60439, USA. NR 25 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0042-9929 J9 WARME STOFFUBERTRAG PD JAN PY 1991 VL 26 IS 2 BP 109 EP 119 DI 10.1007/BF01590244 PG 11 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA EV657 UT WOS:A1991EV65700007 ER PT J AU MORENO, L TSANG, YW TSANG, CF AF MORENO, L TSANG, YW TSANG, CF TI FLOW AND TRACER TRANSPORT IN A SINGLE FRACTURE - A STOCHASTIC-MODEL AND ITS RELATION TO SOME FIELD OBSERVATIONS - REPLY SO WATER RESOURCES RESEARCH LA English DT Note C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720. RP MORENO, L (reprint author), ROYAL INST TECHNOL,DEPT CHEM ENGN,S-10044 STOCKHOLM 70,SWEDEN. NR 4 TC 5 Z9 5 U1 1 U2 5 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 JAN PY 1991 VL 27 IS 1 BP 133 EP 134 DI 10.1029/90WR02318 PG 2 WC Environmental Sciences; Limnology; Water Resources SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA ER548 UT WOS:A1991ER54800014 ER PT J AU MACADAM, SS STRINGER, J AF MACADAM, SS STRINGER, J TI PARTICLE IMPACT AND IMPACT DISTRIBUTION WITHIN A FLUIDIZED-BED COMBUSTOR ENVIRONMENT SO WEAR LA English DT Article AB A principal cause of wear of in-bed heat exchanger tubes in bubbling fluidized bed combustors (BFBCs) arises from the collapse of bubble wakes and "teardrop" voids against the tubes. This collapse results in a hammering effect wherein very dense aggregates of bed particles are periodically driven upward, slamming against tube undersides with great force. This effect is simulated in a specially designed wear rig by quickly driving a specimen rod downward within a bed of fluidized particles. Through the use of this rig, many aspects of BFBC metal wastage have been reproduced, including wear rates, circumferential wear distributions and wear microstructure. In this study, acrylic and aluminum specimens coated with a thin gold layer were exposed in the wear rig for very short times in order to obtain information on the nature and distribution of impacts. Variations in impact size, shape, density, and type were observed around the circumference of the rod. There were similarities in appearance between these impacts and those found in impingement erosion and in two-body abrasion although the scale of damage was much less than that typically seen. Only one-quarter of the particle contacts with the surface were truly damaging. The mean time between damaging impacts at a specific location in the region of maximum wear was approximately 4 min. The principal mechanism of metal removal was probably low cycle fatigue resulting from three-body abrasion. C1 ELECT POWER RES INST,PALO ALTO,CA 94304. RP MACADAM, SS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720, USA. NR 21 TC 10 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD JAN PY 1991 VL 141 IS 2 BP 373 EP 394 DI 10.1016/0043-1648(91)90280-8 PG 22 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA EW075 UT WOS:A1991EW07500012 ER PT J AU POLAR, A INDACOCHEA, JE BLANDER, M AF POLAR, A INDACOCHEA, JE BLANDER, M TI FUNDAMENTALS OF THE CHEMICAL BEHAVIOR OF SELECT WELDING FLUXES SO WELDING JOURNAL LA English DT Article AB This investigation evaluates the relative effects of thermochemical and electrochemical reactions on the transport of elements, particularly manganese, from the flux to the weld metal in submerged arc welding. The experimental fluxes used were silica-calcium oxide-based, containing 20 wt-% MnO, 15 wt-% CaF2, and SiO2 to CaO ratios that varied from 5.50 to 1.16. The slags formed show good detachability, and the welds produced have good bead morphology. The dilution effect was eliminated by drawing the welding wire from the same materials as the base plate. The welding parameters were held constant during weld production and two polarities were used. The arc was found to be stable, but was more so for electrode-positive (reverse) polarity welds. The results of chemical analyses of fluxes, slags and welds are consistent with the following three mechanisms working in parallel that all affect the compositions (and the apparent compositions) of weld metal: 1) the pyrochemical reactions between the slag and the metal; 2) electrochemical reactions at the anodes and cathodes (oxidation and reduction, respectively); and 3) occlusion of slag or solid products of reactions in the weld pool. C1 ARGONNE NATL LAB,DIV CHEM TECHNOL,MAT SCI PROGRAM,ARGONNE,IL 60439. RP POLAR, A (reprint author), UNIV ILLINOIS,DEPT MECH & MET,CHICAGO,IL 60680, USA. NR 21 TC 1 Z9 1 U1 0 U2 0 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 SN 0043-2296 J9 WELD J JI Weld. J. PD JAN PY 1991 VL 70 IS 1 BP S15 EP S19 PG 5 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA EQ614 UT WOS:A1991EQ61400014 ER PT J AU KINDLEBERGER, CP AF KINDLEBERGER, CP TI MARKETS IN HISTORY - ECONOMIC-STUDIES OF THE PAST - GALENSON,DW SO WELTWIRTSCHAFTLICHES ARCHIV-REVIEW OF WORLD ECONOMICS LA English DT Book Review RP KINDLEBERGER, CP (reprint author), A-406 BROOKHAVEN,1010 WALTHAM ST,LEXINGTON,MA 02173, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU J C B MOHR PI TUBINGEN PA POSTFACH 2040, W-7400 TUBINGEN, GERMANY SN 0043-2636 J9 WELTWIRTSCH ARCH JI Weltwirtsch. Arch.-Rev. World Econ. PY 1991 VL 127 IS 1 BP 203 EP 206 PG 4 WC Economics; International Relations SC Business & Economics; International Relations GA FG327 UT WOS:A1991FG32700018 ER PT J AU OKEEFE, MA KILAAS, R AF OKEEFE, MA KILAAS, R TI HRTEM IMAGE SIMULATION OF STRUCTURES WITH POINT-DEFECTS AT SPECIFIC SITES - COMMENT SO ZEITSCHRIFT FUR KRISTALLOGRAPHIE LA English DT Note AB We wish to point out that papers by Rahman (1988) and Rahman and Weichert (1990) contain a basic error in concept. In these papers, the authors seek to shorten the amount of computation necessary for a simulation of a high-resolution transmission electron microscope (HRTEM) image of a structure containing a defect, using as an example an oxygen vacancy in mullite. Unfortunately, the method used leads to errors in the simulated image. The usual method of computing an image of a non-periodic structure is to construct a "supercell" consisting of a number of perfect unit cells surrounding the cell(s) containing the defect (e.g. Iijima and O'Keefe, 1978). The computation is then carried out using the supercell as the new unit cell for the defect structure. Note that the new defect structure is periodic with the periodicity of the chosen supercell, and thus the number, n, of original unit cells making up the supercell must be chosen large enough not only to sample diffraction space sufficiently finely, but also to keep the images of adjacent defects from interfering. Such interferences can arise if electrons scattered from non-perfect regions near to the defect in one supercell contribute to the image of the defect in an adjacent supercell. In addition, if a smooth "periodic continuation" of the structure at the supercell boundary is not possible, the area immediately surrounding the defect of interest must be far enough away from the unsmooth boundary to avoid interferences between the image of the defect and that of the (probably non-physical) boundary. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CHEM SCI,BERKELEY,CA 94720. RP OKEEFE, MA (reprint author), NATL CTR ELECTRON MICROSCOPY MAT,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0044-2968 J9 Z KRISTALLOGR JI Z. Kristall. PY 1991 VL 194 IS 1-2 BP 125 EP 128 DI 10.1524/zkri.1991.194.1-2.125 PG 4 WC Crystallography SC Crystallography GA FC370 UT WOS:A1991FC37000011 ER PT J AU SCHIFFER, JP HANGST, JS AF SCHIFFER, JP HANGST, JS TI ON THE WAY TOWARDS CRYSTALLIZED BEAMS - THE TRANSVERSE TEMPERATURE OF PARTICLE BEAMS SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID COMPONENT AB The cooling of particles in storage rings depends on the coupling between the longitudinal and transverse "temperatures" of the stored beam. This coupling is studied in the limit of relatively sparse beams, and is found to depend sensitively on the relative strengths of the focusing forces in the two transverse dimensions, which determine the ratio of the periods of the betatron oscillations. C1 UNIV CHICAGO,CHICAGO,IL 60439. FERMI NATL ACCELERATOR LAB,BATAVIA,IL. RP SCHIFFER, JP (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 6 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 PY 1991 VL 341 IS 1 BP 107 EP 109 DI 10.1007/BF01281281 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GT660 UT WOS:A1991GT66000013 ER PT J AU OHM, H LIANG, M PAFFRATH, U DESUTTER, B SISTEMICH, K SCHMITT, AM KAFFRELL, N TRAUTMANN, N SEO, T SHIZUMA, K MOLNAR, G KAWADE, K MEYER, RA AF OHM, H LIANG, M PAFFRATH, U DESUTTER, B SISTEMICH, K SCHMITT, AM KAFFRELL, N TRAUTMANN, N SEO, T SHIZUMA, K MOLNAR, G KAWADE, K MEYER, RA TI THE DEFORMED N = 60 NUCLEUS NB-101(41) SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID PICOSECOND LIFETIME MEASUREMENTS; APPROXIMATELY 100 REGION; NEUTRON-RICH NUCLEI; ROTATIONAL STRUCTURE; SHAPE COEXISTENCE; DEFORMATION; STATES; SEPARATOR; SATURATION; TRANSITION AB The beta- decay of Zr-101 has been investigated at the fission-product separators JOSEF and LOHENGRIN. The half-life of Zr-101 has been determined to 2.5(1) s and a level scheme for Nb-101 has been established from gamma-ray singles as well as X-gamma and gamma-gamma coincidence measurements. Conversion coefficients for transitions in Nb-101 and level half-lives between 10 ps and 2 ns have been determined. Three rotational bands are identified among the low-lying levels with band heads at 0 keV, 206 keV and 208 keV. The bands are probably based on the Nilsson configurations [422 5/2+], [301 3/2-] and [303 5/2-], respectively. The deformation has been determined to beta-q = 0.40(4) and 0.41(8) for the ground state band and the band based on the 206 keV level from the half-lives of the first and second excited members of these bands. This shows that the rapid onset of deformation at N = 60 which is typical for the A = 100 region of neutron-rich nuclei, takes also place in the Nb isotopes. Nilsson model calculations describe the experimental data well, especially the several determined transition probabilities including those for E1 transitions from the 206 and 208 keV band heads to the ground state. C1 US DOE, DIV NUCL PHYS ER23, WASHINGTON, DC 20585 USA. UNIV MAINZ, INST KERNCHEM, W-6500 MAINZ, GERMANY. NAGOYA UNIV, FAC ENGN, DEPT NUCL ENGN, CHIKUSA KU, NAGOYA, AICHI 464, JAPAN. MONTGOMERY COLL, TAKOMA PK, MD 20012 USA. KYOTO UNIV, REACTOR RES INST, KUMATORI, OSAKA 59004, JAPAN. HIROSHIMA UNIV, FAC ENGN, HIGASHIHIROSHIMA 724, JAPAN. HUNGARIAN ACAD SCI, INST ISOTOPES, H-1525 BUDAPEST, HUNGARY. RP OHM, H (reprint author), FORSCHUNGSZENTRUM JULICH, INST KERNPHYS, POSTFACH 1913, W-5170 JULICH 1, GERMANY. NR 45 TC 21 Z9 22 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PY 1991 VL 340 IS 1 BP 5 EP 16 DI 10.1007/BF01284474 PG 12 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GC873 UT WOS:A1991GC87300002 ER PT J AU FASANO, CG LEE, TSH AF FASANO, CG LEE, TSH TI COMMENTS ON NUCLEON-NUCLEON PHASE-SHIFT ANALYSES IN THE DELTA-EXCITATION REGION SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID MESON THEORY AB Within a one-pion-exchange coupled-channel model, we show that the N N inelasticities due to the DELTA-excitation in the J > 5 partial waves could significantly affect some of the N N spin observables. We suggest that current N N phase shift analyses should incorporate this theoretical constraint. C1 PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND. ARGONNE NATL LAB, DIV PHYS, ARGONNE, IL 60439 USA. NR 13 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0939-7922 J9 Z PHYS A-HADRON NUCL JI Z. Phys. A.-Hadrons Nuclei PY 1991 VL 340 IS 1 BP 101 EP 103 DI 10.1007/BF01284486 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GC873 UT WOS:A1991GC87300014 ER PT J AU PAUL, M AHMAD, I KUTSCHERA, W AF PAUL, M AHMAD, I KUTSCHERA, W TI HALF-LIFE OF CA-41 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article AB The half-life of Ca-41 has been redetermined to be (1.01 +/- 0.10) x 10(5) yr from the specific activity of a sample of enriched calcium material and its Ca-41 concentration. The activity was measured with a Si(Li) detector via the 3.3-keV X rays emitted in the electron capture decay of Ca-41 to K-41. The Ca-41 concentration was measured by mass spectrometry. Since our result agrees well with the two most recent half-life measurements of Mabuchi et al. (1974), (1.13 +/- 0.12) x 10(5) yr, and Klein et al. (1990), (1.03 +/- 0.07) x 10(5) yr, we recommend the weighted mean of these three measurements, t1/2 = (1.04 +/- 0.05) x 10(5) yr, as the most accurate value of the half-life of Ca-41. C1 ARGONNE NATL LAB,DEPT PHYS,ARGONNE,IL 60439. RP PAUL, M (reprint author), HEBREW UNIV JERUSALEM,RACAH INST PHYS,IL-91904 JERUSALEM,ISRAEL. NR 17 TC 37 Z9 37 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 PY 1991 VL 340 IS 3 BP 249 EP 254 DI 10.1007/BF01294672 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GM160 UT WOS:A1991GM16000005 ER PT J AU REHM, KE GEHRING, J GLAGOLA, B MA, WC PHILLIPS, W WOLFS, FLH AF REHM, KE GEHRING, J GLAGOLA, B MA, WC PHILLIPS, W WOLFS, FLH TI ENERGY-DEPENDENCE OF ONE-PARTICLE AND 2-PARTICLE TRANSFER-REACTIONS IN THE SYSTEM O-16 + ZR-90 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID ELASTIC-SCATTERING; O-16+CA-48; STATES; PB-208 AB The energy dependence of the one- and two-particle transfer reactions Zr-90(O-16, O-17)Zr-89, Zr-90(O-16, N-15)Nb-91 and Zr-90(O-16, C-14)Mo-92 was studied at bombarding energies of 80 MeV, 138.2 MeV and 194.4 MeV. A comparison with one-step DWBA calculations shows good agreement for the one-particle transfers over the whole energy range. For the two-proton transfer reaction (O-16, C-14) the discrepancies between experiment and theory are large with an exponential decrease towards higher energies. Current theories are unable to describe this behavior. RP REHM, KE (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 26 TC 3 Z9 3 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 PY 1991 VL 340 IS 3 BP 281 EP 286 DI 10.1007/BF01294676 PG 6 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GM160 UT WOS:A1991GM16000009 ER PT J AU VISCHER, AP SIEMENS, PJ SIERK, AJ AF VISCHER, AP SIEMENS, PJ SIERK, AJ TI REACTIONS OF QCD PLASMA DROPLETS IN HOT MIXED-PHASE MATTER SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID PROXIMITY AB We introduce a droplet model to survey the interactions and reactions of blobs of QCD plasma in a mixed phase with low-density hadronic gas. We extend earlier work on the statistical mechanism of pionic emission by the droplets to include the fission of a large droplet into two smaller ones, and give quantitative estimates for the fission rate. We also consider the collisions of plasma droplets. By extending the proximity model to the case when the droplets are composed of relativistic particles, we show that collisions almost always lead to fusion of the plasma droplets, and give a simple estimate of the conditions necessary for fusion. C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP VISCHER, AP (reprint author), OREGON STATE UNIV,DEPT PHYS,CORVALLIS,OR 97331, USA. NR 11 TC 3 Z9 3 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 PY 1991 VL 340 IS 3 BP 315 EP 324 DI 10.1007/BF01294680 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GM160 UT WOS:A1991GM16000013 ER PT J AU KRAUS, G EGELHOF, P EMLING, H GROSSE, E HENNING, W HOLZMANN, R KORNER, HJ KRATZ, JV KULESSA, R SCHIESSL, C SCHIFFER, JP WAGNER, W WALUS, W WOLLERSHEIM, HJ AF KRAUS, G EGELHOF, P EMLING, H GROSSE, E HENNING, W HOLZMANN, R KORNER, HJ KRATZ, JV KULESSA, R SCHIESSL, C SCHIFFER, JP WAGNER, W WALUS, W WOLLERSHEIM, HJ TI INVESTIGATION OF THE (D,P)-REACTION ON XE-136, XE-132 IN INVERSE KINEMATICS SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Note AB The one-neutron transfer reactions d(Xe-132, Xe-136, p) Xe-133, 137Xe have been investigated in inverse kinematics with xenon beams incident on deuterium loaded titanium targets. The angular distributions of the protons, measured with a detector array of 100 PIN-photodiodes, have been analyzed using standard DWBA. Generally, good agreement is obtained with results previously obtained in reactions induced by light-ion beams. C1 TECH UNIV MUNICH,DEPT PHYS,W-8046 GARCHING,GERMANY. ARGONNE NATL LAB,ARGONNE,IL 60439. JAGIELLONIAN UNIV,PL-31007 KRAKOW,POLAND. UNIV MAINZ,INST KERNCHEM,W-6500 MAINZ,GERMANY. RP KRAUS, G (reprint author), GESELL SCHWERIOMFORSCH MBH,W-6100 DARMSTADT,GERMANY. NR 3 TC 21 Z9 21 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 PY 1991 VL 340 IS 3 BP 339 EP 340 DI 10.1007/BF01294683 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GM160 UT WOS:A1991GM16000016 ER PT J AU TOTH, KS VIERINEN, KS NITSCHKE, JM WILMARTH, PA CHASTELER, RM AF TOTH, KS VIERINEN, KS NITSCHKE, JM WILMARTH, PA CHASTELER, RM TI ALPHA-DECAYING LOW-SPIN LEVELS IN LU-155 AND LU-157 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Note ID TM-153 AB Using an on-line mass separator, the alpha-particle decays of 155Lu and 157Lu were investigated. A new alpha-emitting level in 157Lu was identified [T1/2 = 5.7(5) s, E-alpha = 4924(20) keV]. In addition, a half-life of 140(20) ms was measured for the recently discovered second, low-lying, alpha-decaying level [E-alpha = 5579(5) keV] in 155Lu. C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. UNIV HELSINKI,SF-00170 HELSINKI 17,FINLAND. RP TOTH, KS (reprint author), OAK RIDGE NATL LAB,DEPT PHYS,OAK RIDGE,TN 37831, USA. NR 10 TC 11 Z9 11 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 PY 1991 VL 340 IS 3 BP 343 EP 344 DI 10.1007/BF01294685 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA GM160 UT WOS:A1991GM16000018 ER PT J AU CHASMAN, RR AF CHASMAN, RR TI NUCLEAR EQUILIBRIUM SHAPES NEAR A = 100 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID SUPERDEFORMATION; A=190 AB Nuclear equilibrium shapes in the region A = 100 are studied in the context of the cranked shell model. Many nuclides with large equilibrium ground state deformations are found. Equilibrium deformations at I = 20 are typically found to be substantially reduced. RP CHASMAN, RR (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 13 TC 13 Z9 13 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 PY 1991 VL 339 IS 1 BP 111 EP 114 DI 10.1007/BF01282939 PG 4 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FT046 UT WOS:A1991FT04600013 ER PT J AU RASMUSSEN, JO STOYER, MA CANTO, LF DONANGELO, R RING, P AF RASMUSSEN, JO STOYER, MA CANTO, LF DONANGELO, R RING, P TI NUCLEAR ROTATIONAL POPULATION-PATTERNS IN HEAVY-ION SCATTERING AND TRANSFER-REACTIONS SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID EXCITATION; STATES AB A model of Pu-239 with decoupled neutron is used for theoretical calculations of rotational population patterns in heavy ion inelastic scattering and one-neutron transfer reactions. The system treated is Zr-90 on Pu-239 at the near-barrier energy of 500 MeV and backscattering angles of 180-degrees and 140-degrees. The influence of the complex nuclear optical potential is seen to be very strong, and the Nilsson wave function of the odd neutron produces a distinctive pattern in the transfer reaction. C1 UNIV FED RIO DE JANEIRO,RIO DE JANEIRO,BRAZIL. TECH UNIV MUNICH,W-8046 GARCHING,GERMANY. RP RASMUSSEN, JO (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI Canto, Luiz /I-3733-2012; Ring, Peter/O-1638-2015 NR 18 TC 0 Z9 0 U1 0 U2 2 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 PY 1991 VL 339 IS 1 BP 141 EP 145 DI 10.1007/BF01282943 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FT046 UT WOS:A1991FT04600017 ER PT J AU WEBER, F GLENDENNING, NK AF WEBER, F GLENDENNING, NK TI LIMITING ANGULAR VELOCITY OF REALISTIC RELATIVISTIC NEUTRON-STAR MODELS SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID RIGIDLY ROTATING STARS; GRAVITATIONAL-RADIATION; SECULAR INSTABILITIES; GENERAL-RELATIVITY; TRANSPORT PROPERTIES; STELLAR MODELS; NUCLEAR-MATTER; DENSE MATTER; QUARK MATTER; OSCILLATIONS AB The Keplerian velocity as well as those frequencies at which instability against gravitational radiation-reaction sets in are calculated for rotating neutron star models of gravitational mass 1.5 M.. The investigation is based on four different, realistic neutron star matter equations of state. Our results indicate that the gravitational radiation instability sets in well below (i.e., 63-71% of) the Keplerian frequency, and that young neutron stars are limited to rotational periods greater than about 1 ms. In young and therefore hot (T almost-equal-to 10(10) K) neutron stars the m = 5(+/- 1) modes and in old stars after being spun up and reheated by mass accretion, the m = 4 and/or m = 3 modes may set the limit on stable rotation. C1 UNIV MUNICH,INST THEORET PHYS,W-8000 MUNICH 2,GERMANY. RP WEBER, F (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 46 TC 4 Z9 4 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 PY 1991 VL 339 IS 1 BP 211 EP 215 DI 10.1007/BF01282952 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FT046 UT WOS:A1991FT04600026 ER PT J AU CASTEL, B SICILIANO, ER OKUHARA, Y AF CASTEL, B SICILIANO, ER OKUHARA, Y TI RADIATIVE M1 CAPTURE IN LIGHT-NUCLEI SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID NEUTRON RESONANCE; SI-29; STATES AB The importance of semi-direct processes in E1 and E2 capture reactions has been well documented. Little is known, however, about M1 capture although a vast body of data indicates a non-statistical nature. We discuss here the importance of the semi-direct M1 process and concentrate in particular on recent experimental results claiming that the M1 strength in Si-29 is nearly one order of magnitude smaller than in Si-28, the target nucleus. We use shell model arguments to demonstrate that this reduction is indeed consistent with the semi-direct reaction process and that other mechanisms like 2p-2h fragmentation and phonon coupling are not likely to be instrumental in elucidating further the non-statistical nature of the Si-28 + n reaction. C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. UNIV ALBERTA,DEPT PHYS,EDMONTON T6G 2J1,ALBERTA,CANADA. RP CASTEL, B (reprint author), QUEENS UNIV,DEPT PHYS,KINGSTON K7L 3N6,ONTARIO,CANADA. NR 11 TC 0 Z9 0 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 PY 1991 VL 339 IS 2 BP 261 EP 263 DI 10.1007/BF01284062 PG 3 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FU068 UT WOS:A1991FU06800008 ER PT J AU SEYFARTH, H GUVEN, HH KARDON, B LAUPPE, WD LHERSONNEAU, G SISTEMICH, K BRANT, S KAFFRELL, N MAIERKOMOR, P VONACH, HK PAAR, V VORKAPIC, D MEYER, RA AF SEYFARTH, H GUVEN, HH KARDON, B LAUPPE, WD LHERSONNEAU, G SISTEMICH, K BRANT, S KAFFRELL, N MAIERKOMOR, P VONACH, HK PAAR, V VORKAPIC, D MEYER, RA TI STRUCTURE OF THE TRIPLET OF LOW-LYING STATES IN MO-101 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID COLLECTIVE STATES; NEUTRON-CAPTURE; NUCLEI; MODEL; TRANSITION; SEPARATOR; PRODUCTS; LIMIT; MASS AB The properties of the triplet of low-lying states in Mo-101 have been studied through spectroscopy of the gamma-radiation following thermal neutron capture in Mo-100 and beta-decay of 101-Nb and through a measurement of the proton angular distributions in the Mo-100 (d,p) reaction with 14 MeV deuteron energy. The half-lives of the 13.5 keV state and the 57.0 keV 5/2+ state have been measured as 226(7) and 133(7) ns, respectively. These values and the quadrupole/dipole mixing ratios of the 13.5 keV and 43.5 keV transitions yield spin and parity 3/2+ for the 13.5 keV level. The E2 components in the 13.5 (3/2+ --> 1/2+) and 43.5 keV (5/2+ --> 3/2+) transitions are less-than-or-equal-to 8.10(-4) and 54(9)%, respectively. The possibility of an additional state near to the 57.0 keV level is discussed. IBFM/PTQM calculations, taking into consideration the transitional character of the Mo-100 boson core, account for the electromagnetic-transition and transfer-reaction pattern of the triplet of states. C1 UNIV MAINZ,INST KERNCHEM,W-6500 MAINZ,GERMANY. TECH UNIV MUNICH,DEPT PHYS,W-8046 GARCHING,GERMANY. UNIV VIENNA,INST RADIUMFORSCH & KERNPHYS,A-1090 VIENNA,AUSTRIA. UNIV ZAGREB,FAK PRIRODOSLOVNO MATEMAT,YU-41000 ZAGREB,YUGOSLAVIA. US DOE,DIV NUCL PHYS,WASHINGTON,DC 20545. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP SEYFARTH, H (reprint author), FORSCHUNGSZENTRUM JULICH,INST KERNPHYS,POSTFACH 1913,W-5170 JULICH,GERMANY. RI Paar, Vladimir/D-8009-2015 NR 50 TC 7 Z9 7 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 PY 1991 VL 339 IS 2 BP 269 EP 278 DI 10.1007/BF01284064 PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FU068 UT WOS:A1991FU06800010 ER PT J AU PERELYGIN, VP STETSENKO, SG CRAWFORD, HJ SYMONS, TJM AF PERELYGIN, VP STETSENKO, SG CRAWFORD, HJ SYMONS, TJM TI ANALYSIS OF THE RESULTS OF CALIBRATING METEORITIC OLIVINE CRYSTALS WITH U-238 NUCLEI AT THE BEVALAC ACCELERATOR SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Article ID COSMIC-RAYS; ABUNDANCES AB The results are presented of calibrating the sensitivity of olivine crystals from meteorites by the U-238 nuclei produced at the Bevalac accelerator. The comparative studies of the spectra of the etchable track lengths due to the U-238 nuclei and to "fossil" tracks in these olivines have shown that the group of the 210-mu-m "fossil" tracks observed in 1980 at the LNR, JINR is due to the galactic cosmic-ray nuclei of the Th-U group. As regards the origin of the 340-360-mu-m group of "fossil" tracks which were considered in [2] to be candidates for superheavy nuclei in cosmic rays the presence of the track with a length of up to 360-mu-m in the calibrating U-2388 track length spectra indicates that the above interpretation has to be questioned. The possible ways of the unambiguous identification of the group of the abnormally long "fossil" tracks are discussed. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP PERELYGIN, VP (reprint author), JOINT INST NUCL RES,NUCL REACT INST,HEAD PO,POB 79,MOSCOW 100100,USSR. NR 29 TC 2 Z9 2 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 PY 1991 VL 338 IS 4 BP 435 EP 439 DI 10.1007/BF01295772 PG 5 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FM969 UT WOS:A1991FM96900008 ER PT J AU PALACZ, M SUJKOWSKI, Z NYBERG, J BACELAR, J JONGMAN, J URBAN, W HESSELINK, W NASSER, J PLOMPEN, A WYSS, R AF PALACZ, M SUJKOWSKI, Z NYBERG, J BACELAR, J JONGMAN, J URBAN, W HESSELINK, W NASSER, J PLOMPEN, A WYSS, R TI HIGH-SPIN STATES IN CE-131 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Note ID YRAST LINE; BANDS; REGION; PROTON; H11/2 AB Gamma ray spectra from the Sn-117(O-18, 4n)131Ce reaction have been studied with the NORDBALL array of 15 Compton-suppressed Ge detectors. States up to I = 51/2 h, E almost-equal-to 8 MeV are populated. Observed bands are interpreted in terms of quasiparticle configurations. C1 RISO NATL LAB,NIELS BOHR INST,TANDEM ACCELERATOR LAB,DK-4000 ROSKILDE,DENMARK. KERNFYS VERSNELLER INST,9747 AA GRONINGEN,NETHERLANDS. FREE UNIV AMSTERDAM,NUT KUNDIG LAB,1081 HV AMSTERDAM,NETHERLANDS. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP PALACZ, M (reprint author), SOLTAN INST NUCL STUDIES,PL-05400 OTWOCK,POLAND. RI Palacz, Marcin/H-3713-2012 NR 15 TC 17 Z9 17 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 PY 1991 VL 338 IS 4 BP 467 EP 468 DI 10.1007/BF01295780 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FM969 UT WOS:A1991FM96900016 ER PT J AU HENRY, EA KUHNERT, A BECKER, JA BRINKMAN, MJ WANG, TF CIZEWSKI, JA KORTEN, W AZAIEZ, F DELEPLANQUE, MA DIAMOND, RM DRAPER, JE KELLY, WH MACCHIAVELLI, AO STEPHENS, FS AF HENRY, EA KUHNERT, A BECKER, JA BRINKMAN, MJ WANG, TF CIZEWSKI, JA KORTEN, W AZAIEZ, F DELEPLANQUE, MA DIAMOND, RM DRAPER, JE KELLY, WH MACCHIAVELLI, AO STEPHENS, FS TI OBSERVATION OF A SUPERDEFORMED BAND IN PB-192 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Note AB A new superdeformed band, identified in data from the Mg-24 + Yb-173 reaction, is assigned to 192Pb on the basis of excitation function and coincidence results. Properties of this band are discussed briefly, and compared to the superdeformed bands known in other Pb nuclei. C1 CEN BORDEAUX GRADIGNAN,INST NATL PHYS NUCL & PHYS PARTICULES,F-33170 GRADIGNAN,FRANCE. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08855. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. UNIV CALIF DAVIS,DAVIS,CA 95616. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. RP HENRY, EA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. RI KORTEN, Wolfram/H-3043-2013; OI KORTEN, Wolfram/0000-0002-3940-0816 NR 8 TC 26 Z9 26 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 PY 1991 VL 338 IS 4 BP 469 EP 470 DI 10.1007/BF01295781 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FM969 UT WOS:A1991FM96900017 ER PT J AU AZAIEZ, F KELLY, WH KORTEN, W DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM DRAPER, JE MACCHIAVELLI, AO RUBEL, E DEBOER, J ROHN, M BECKER, JA HENRY, EA BRINKMAN, MJ YATES, SW KUHNERT, A WANG, TF AF AZAIEZ, F KELLY, WH KORTEN, W DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM DRAPER, JE MACCHIAVELLI, AO RUBEL, E DEBOER, J ROHN, M BECKER, JA HENRY, EA BRINKMAN, MJ YATES, SW KUHNERT, A WANG, TF TI SUPERDEFORMED BANDS IN TL-195 SO ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI LA English DT Note ID ALIGNMENT; NUCLEI AB Two superdeformed (SD) bands have been found and assigned to 195Tl on the basis of excitation function and cross bombardment results. The two bands are almost identical in transition energies to those observed in 193Tl. They are signature partners with a splitting, presumably due to the proton i13/2 (OMEGA = 5/2) orbital, characteristic of all known SD bands in the thallium isotopes. Their alignments relative to the 193Tl bands were found to be zero. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903. UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506. CEN BORDEAUX GRADIGNAN,INST NATL PHYS NUCL & PHYS PARTICULES,F-33170 GRADIGNAN,FRANCE. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011. UNIV CALIF DAVIS,DAVIS,CA 95616. UNIV MUNICH,W-8000 MUNICH 2,GERMANY. RP AZAIEZ, F (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. RI KORTEN, Wolfram/H-3043-2013; OI KORTEN, Wolfram/0000-0002-3940-0816 NR 9 TC 18 Z9 18 U1 0 U2 2 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 PY 1991 VL 338 IS 4 BP 471 EP 472 DI 10.1007/BF01295782 PG 2 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA FM969 UT WOS:A1991FM96900018 ER PT J AU WOLF, B BLICK, R BRULS, G LUTHI, B FISK, Z SMITH, JL OTT, HR AF WOLF, B BLICK, R BRULS, G LUTHI, B FISK, Z SMITH, JL OTT, HR TI MAGNETOACOUSTIC QUANTUM OSCILLATIONS IN THE HEAVY FERMION SUPERCONDUCTOR UBE13 SO ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER LA English DT Note AB In UBe13 magnetoacoustic quantum oscillations (MAQO) are observed for the attenuation- and the sound velocity-changes in the superconducting and normal state. The observed extremal areas and the effective masses are small. C1 SWISS FED INST TECHNOL, FESTKORPERPHYS LAB, CH-8093 ZURICH, SWITZERLAND. UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. RP WOLF, B (reprint author), UNIV FRANKFURT, INST PHYS, ROBERT MAYER STR 2-4, W-6000 FRANKFURT, GERMANY. NR 17 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-3277 J9 Z PHYS B CON MAT JI Z. Phys. B-Condens. Mat. PY 1991 VL 85 IS 2 BP 159 EP 160 DI 10.1007/BF01313215 PG 2 WC Physics, Condensed Matter SC Physics GA GN113 UT WOS:A1991GN11300001 ER PT J AU FLENSBERG, K GIRVIN, SM JONSON, M PENN, DR STILES, MD AF FLENSBERG, K GIRVIN, SM JONSON, M PENN, DR STILES, MD TI COULOMB BLOCKADE IN SINGLE TUNNEL-JUNCTIONS - QUANTUM-MECHANICAL EFFECTS OF THE ELECTROMAGNETIC ENVIRONMENT SO ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER LA English DT Article ID FLUCTUATIONS; OSCILLATIONS; DISSIPATION; ELECTRONS; DYNAMICS; SYSTEM AB We discuss the interaction of a tunneling electron with its equilibrium electromagnetic environment. The environment of an isolated tunnel junction is modeled by a set of harmonic oscillators that are suddenly displaced when an electron tunnels across the junction. We treat these displaced oscillators quantum mechanically, predicting behavior that is very different than that predicted by a semiclassical treatment. In particular, the shape of the zero-bias anomaly caused by the Coulomb blockade (a single-electron charging effect), is found to be strongly dependent on the impedance, Z(omega), of the leads connected to the junction. Comparison with three recent experiments demonstrates that the quantum mechanical treatment of this model correctly describes the essential physics in these systems. C1 UNIV TENNESSEE, DEPT PHYS, KNOXVILLE, TN 37996 USA. OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA. NATL INST STAND & TECHNOL, GAITHERSBURG, MD 20899 USA. INDIANA UNIV, DEPT PHYS, BLOOMINGTON, IN 47401 USA. CHALMERS UNIV TECHNOL, INST THEORET PHYS, S-41296 GOTHENBURG, SWEDEN. RP FLENSBERG, K (reprint author), NORDITA, BLEGDAMSVEJ 17, DK-2100 COPENHAGEN, DENMARK. RI Jonson, Mats/D-6545-2011; Stiles, Mark/K-2426-2012; Flensberg, Karsten/N-4718-2014 OI Stiles, Mark/0000-0001-8238-4156; Flensberg, Karsten/0000-0002-8311-0103 NR 47 TC 13 Z9 13 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-3277 J9 Z PHYS B CON MAT JI Z. Phys. B-Condens. Mat. PY 1991 VL 85 IS 3 BP 395 EP 403 DI 10.1007/BF01307636 PG 9 WC Physics, Condensed Matter SC Physics GA GV450 UT WOS:A1991GV45000012 ER PT J AU BRAUN, E SCHNELLE, W BROICHER, H HARNISCHMACHER, J WOHLLEBEN, D ALLGEIER, C REITH, W SCHILLING, JS BOCK, J PREISLER, E VOGT, GJ AF BRAUN, E SCHNELLE, W BROICHER, H HARNISCHMACHER, J WOHLLEBEN, D ALLGEIER, C REITH, W SCHILLING, JS BOCK, J PREISLER, E VOGT, GJ TI SPECIFIC-HEAT AND THERMAL-EXPANSION OF THE BI AND TL HIGH-TEMPERATURE SUPERCONDUCTORS NEAR TC SO ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER LA English DT Article ID SINGLE-CRYSTAL YBA2CU3O7; MAGNETIC-SUSCEPTIBILITY; OXYGEN-CONTENT; CU; DEPENDENCE; PRESSURE; STATE AB We present measurements of the specific heat and of the thermal expansion of the most prominent phases of the Bi and Tl high temperature superconductors (Bi-2212, Bi-2223, Tl-2212, Tl-2223) in the neighbourhood of T(c). In all these systems we observe small but sharp anomalies which have very little similarity with the mean field jump found in the conventional superconductors. The analysis of these anomalies shows clear evidence for the presence of strong fluctuations of the order parameter. For temperatures more than almost-equal-to 5 K away from T(c), 2D Gaussian fluctuations are found, while within +/- 5 K of T(c) the fluctuation contribution is best fitted by critical fluctuations. The shape of the thermal expansion anomalies is similar to that of the specific heat. Combination of both measurements predicts dT(c)/dp almost-equal-to + 0.2 K/kbar for Bi- and Tl-2223 systems. C1 HOECHST AG, W-5030 HURTH, GERMANY. UNIV CALIF LOS ALAMOS SCI LAB, CERAM SCI & TECHNOL GRP, LOS ALAMOS, NM 87545 USA. UNIV MUNICH, SEKT PHYS, W-8000 MUNICH 40, GERMANY. RP BRAUN, E (reprint author), UNIV COLOGNE, INST PHYS 2, ZULPICHER STR 77, W-5000 COLOGNE 41, GERMANY. NR 50 TC 33 Z9 33 U1 0 U2 8 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0722-3277 J9 Z PHYS B CON MAT JI Z. Phys. B-Condens. Mat. PY 1991 VL 84 IS 3 BP 333 EP 341 DI 10.1007/BF01314005 PG 9 WC Physics, Condensed Matter SC Physics GA GC780 UT WOS:A1991GC78000001 ER PT J AU MORFIN, JG TUNG, WK AF MORFIN, JG TUNG, WK TI PARTON DISTRIBUTIONS FROM A GLOBAL QCD ANALYSIS OF DEEP INELASTIC-SCATTERING AND LEPTON-PAIR PRODUCTION SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID DRELL-YAN PROCESS; CHROMODYNAMICS; NEUTRINO; DIMUONS AB Parton distribution functions consistent with neutrino and muon deep inelastic scattering as well as Drell-Yan pair production results have been extracted. This analysis incorporates experimental systematic errors which are the dominant errors in recent deep inelastic scattering experiments. The dependence of the results on factors such as kinematic cuts in the data, heavy target corrections, and choice of initial functional form are also explored. The form adopted is motivated by perturbative QCD and particularly useful in exploring the small-x extrapolation of the distributions. This is crucial for studying the range of predictions for Collider, HERA, and SSC/LHC cross sections. Representative distribution function sets are presented in a very compact parametrized form both in the DIS and MS-bar renormalization schemes. C1 IIT,CHICAGO,IL 60616. UNIV AUTONOMA BARCELONA,FIS ALTES ENERGIES LAB,BARCELONA,SPAIN. RP MORFIN, JG (reprint author), FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. NR 26 TC 268 Z9 268 U1 0 U2 1 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 PY 1991 VL 52 IS 1 BP 13 EP 29 DI 10.1007/BF01412323 PG 17 WC Physics, Particles & Fields SC Physics GA GG700 UT WOS:A1991GG70000002 ER PT J AU Abreu, P Adam, W Adami, F Adye, T Akesson, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Antilogus, P Apel, WD Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Battaglia, M Bates, MJ Baubillier, M Becks, KH Beeston, CJ Begalli, M Beiliere, P Belokopytov, Y Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Blyth, S Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Chapkin, M Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Collins, P Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P Angelis, AD DeBeer, M DeBoeck, H DeBoer, W DeClercq, C Laso, MDMD DeGroot, N De La Vaissiere, C DeLotto, B Defoix, C Delikaris, D Delorme, S Delpierre, P Demaria, N Demin, A Derkaoui, J DiCiaccio, L Dijkstra, H Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzehlyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G Peisert, AE Engel, JP Fassouliotis, D Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, C Garcia, J Gasparini, U Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW Herbst, I Hernandez, JJ Herquet, P Herr, H Hietanen, I Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Holthuizen, D Honore, PF Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Isenhower, D Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Johnson, D Jonker, M Jonsson, L Jullot, P Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostukhin, V Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Liko, D Lieb, E Lillethun, E Lindgren, J Lipniacka, A Lippi, I Llosa, R Loerstad, B Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Los, M Loukas, D Lounis, A Lonzano, JJ Lucock, R Lutz, P Lyons, L Maehlum, G Maillard, J Maltezos, A Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Menichetti, E Meola, G Meroni, C Meyer, WT Michelotto, M Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Murray, WJ Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V Olshevski, AG Orava, R Ostankow, A Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pierre, F Pimenta, M Pingot, O Pinsent, A Pol, ME Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M Ridky, J Rinaudo, G Roditi, I Romero, A Roncagliolo, I Ronchese, P Ronnqvist, C Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W Ruhlmann, V Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Salt, J Sanchez, E Sanchez, J Sannino, M Schaeffer, M Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G Smadja, G Smith, GR Smirnov, N Sosnowski, R Spassoff, TS Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tabarelli, T Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timoveev, VG Tkatchev, LG Todorov, T Toet, DZ Tomaradze Tortora, L Trainor, MT Treille, D Trevisan, U Trischuk, W Tristam, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, S Ullaland, O Uvarov, VA Valenti, G Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N Viasov, EV Vodopyanov, AS Vollmer, M Volponi, S Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zito, M Zitoun, R Funchal, RZ Zumerle, G Zuniga, J AF Abreu, P Adam, W Adami, F Adye, T Akesson, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Antilogus, P Apel, WD Asman, B Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Battaglia, M Bates, MJ Baubillier, M Becks, KH Beeston, CJ Begalli, M Beiliere, P Belokopytov, Y Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Blyth, S Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Chapkin, M Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Collins, P Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P Angelis, AD DeBeer, M DeBoeck, H DeBoer, W DeClercq, C Laso, MDMD DeGroot, N De La Vaissiere, C DeLotto, B Defoix, C Delikaris, D Delorme, S Delpierre, P Demaria, N Demin, A Derkaoui, J DiCiaccio, L Dijkstra, H Djama, F Dolbeau, J Donszelmann, M Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzehlyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G Peisert, AE Engel, JP Fassouliotis, D Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, C Garcia, J Gasparini, U Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW Herbst, I Hernandez, JJ Herquet, P Herr, H Hietanen, I Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Holthuizen, D Honore, PF Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Isenhower, D Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Johnson, D Jonker, M Jonsson, L Jullot, P Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostukhin, V Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Liko, D Lieb, E Lillethun, E Lindgren, J Lipniacka, A Lippi, I Llosa, R Loerstad, B Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Los, M Loukas, D Lounis, A Lonzano, JJ Lucock, R Lutz, P Lyons, L Maehlum, G Maillard, J Maltezos, A Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R McNulty, R Menichetti, E Meola, G Meroni, C Meyer, WT Michelotto, M Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Murray, WJ Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V Olshevski, AG Orava, R Ostankow, A Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pierre, F Pimenta, M Pingot, O Pinsent, A Pol, ME Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M Ridky, J Rinaudo, G Roditi, I Romero, A Roncagliolo, I Ronchese, P Ronnqvist, C Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W Ruhlmann, V Ruiz, A Rybicki, K Saarikko, H Sacquin, Y Salt, J Sanchez, E Sanchez, J Sannino, M Schaeffer, M Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G Smadja, G Smith, GR Smirnov, N Sosnowski, R Spassoff, TS Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tabarelli, T Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timoveev, VG Tkatchev, LG Todorov, T Toet, DZ Tomaradze Tortora, L Trainor, MT Treille, D Trevisan, U Trischuk, W Tristam, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Ueberschaer, S Ullaland, O Uvarov, VA Valenti, G Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N Viasov, EV Vodopyanov, AS Vollmer, M Volponi, S Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zito, M Zitoun, R Funchal, RZ Zumerle, G Zuniga, J CA DELPHI Collaboration TI CHARGED-PARTICLE MULTIPLICITY DISTRIBUTIONS IN RESTRICTED RAPIDITY INTERVALS IN Z0 HADRONIC DECAYS SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID LUND MONTE-CARLO; JET PRODUCTION-RATES; E+E ANNIHILATION; 250 GEV/C; PETRA ENERGIES; COLLISIONS; DEPENDENCE; FRAGMENTATION; QCD; RESONANCE AB The multiplicity distributions of charged particles in restricted rapidity intervals in Z0 hadronic decays measured by the DELPHI detector are presented. The data reveal a shoulder structure, best visible for intervals of intermediate size, i.e. for rapidity limits around +/- 1.5. The whole set of distributions including the shoulder structure is reproduced by the Lund Parton Shower model. The structure is found to be due to important contributions from 3- and 4-jet events with a hard gluon jet. A different model, based on the concept of independently produced groups of particles, "clans", fluctuating both in number per event and particle content per clan, has also been used to analyse the present data. The results show that for each interval of rapidity the average number of clans per event is approximately the same as at lower energies. C1 Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Univ Instelling Antwerp, Dept Phys, B-2610 Wilrijk, BELGIUM. ULB VUB, IIHE, B-1050 Brussels, BELGIUM. Univ Etat Mons, Serv Phys Part Elem, 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. Ist Nazl Fis Nucl, I-40126 Bologna, ITALY. Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE. CERN, CH-1211 Geneva 23, SWITZERLAND. Grp DELPHI, CRN, Div Hautes Energies, F-67037 Strasbourg, FRANCE. Grp LEPSI, CRN, Div Hautes Energies, F-67037 Strasbourg, FRANCE. NRC Demokritos, Inst Nucl Phys, GR-15310 Athens, GREECE. Ist Nazl Fis Nucl, I-16146 Genoa, ITALY. Univ Genoa, Dipartimento Fis, I-16146 Genoa, ITALY. Univ Helsinki, Res Inst High Energy Phys, SF-00170 Helsinki 17, FINLAND. Joint Inst Nucl Res Dubna, Moscow 101000, RUSSIA. Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe 1, GERMANY. Inst Nucl Phys, High Energy Phys Lab, PL-30055 Krakow 30, POLAND. Univ Paris Sud, Lab Accelerateur Lineaire, F-91405 Orsay, FRANCE. LIP, P-1000 Lisbon, PORTUGAL. Univ Liverpool, Dept Phys, Liverpool L69 3BX, ENGLAND. Univ Paris 06, LPNHE, F-75230 Paris 05, FRANCE. Univ Paris 07, LPNHE, F-75230 Paris 05, FRANCE. Univ Lund, Dept Phys, S-22363 Lund, SWEDEN. Univ Claude Bernard Lyon, F-69622 Villeurbanne, FRANCE. Univ Complutense, Dept Fis Atom Mol & Nucl, E-28040 Madrid, SPAIN. Fac Sci Oujda, Dept Phys, Oujda, MAROC. Univ Aix Marseille 2, Fac Sci Luminy, F-13288 Marseille 09, FRANCE. Univ Milan, Dipartimento Fis, I-20133 Milan, ITALY. Ist Nazl Fis Nucl, I-20133 Milan, ITALY. Niels Bohr Inst, DK-2100 Copenhagen, DENMARK. NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS. Natl Tech Univ, Dept Phys, GR-15773 Athens, GREECE. Univ Oslo, Dept Phys, N-1000 Oslo 3, NORWAY. Univ Oxford, Nucl Phys Lab, Oxford OX1 3RH, ENGLAND. Univ Padua, Dipartimento Fis, I-35131 Padua, ITALY. Ist Nazl Fis Nucl, I-35131 Padua, ITALY. Rutherford Appleton Lab, Chilton OX11 OQX, ENGLAND. Univ Rome 2, Dipartimento Fis, I-00173 Rome, ITALY. Ist Nazl Fis Nucl, I-00173 Rome, ITALY. CEN Saclay, DPhPE, F-91191 Gif Sur Yvette, FRANCE. Ist Nazl Fis Nucl, Ist Super Sanita, I-00161 Rome, ITALY. Univ Santander, Fac Ciencias, E-39005 Santander, SPAIN. Inst High Energy Phys, Protvino, RUSSIA. Univ Stockholm, Inst Phys, S-11346 Stockholm, SWEDEN. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, ITALY. Ist Nazl Fis Nucl, I-10125 Turin, ITALY. Univ Trieste, Dipartimento Fis, I-34127 Trieste, ITALY. Ist Nazl Fis Nucl, I-34127 Trieste, ITALY. Univ Udine, Ist Fis, I-33100 Udine, ITALY. Univ Uppsala, Dept Radiat Sci, S-75121 Uppsala, SWEDEN. Ctr Mixto Univ Valencia CSIC, Inst Fis Corpuscular IFIC, E-46100 Burjassot, SPAIN. Oesterreich Akad Wissensch, Inst Hochenergiephys, A-1050 Vienna, AUSTRIA. Univ Warsaw, Inst Nucl Studies, PL-99681 Warsaw, POLAND. Univ Wuppertal, Fachbereich Phys, D-5600 Wuppertal 1, GERMANY. RP Abreu, P (reprint author), LIP, AV ELIAS GARCIA 14LE, P-1000 LISBON, PORTUGAL. RI Pimenta, Mario/M-1741-2013; Varela, Joao/K-4829-2016; Zuniga, Juan/P-4385-2014; Vaz, Pedro/K-2464-2013; Rovelli, Tiziano/K-4432-2015; Fernandez-Alonso, Mercedes/F-2557-2016; Olshevskiy, Alexander/I-1580-2016; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Ruiz, Alberto/E-4473-2011; Zaitsev, Alexandre/B-8989-2017; OI Pimenta, Mario/0000-0002-2590-0908; Demaria, Natale/0000-0003-0743-9465; Bonesini, Maurizio/0000-0001-5119-1896; Sannino, Mario/0000-0001-7700-8383; Varela, Joao/0000-0003-2613-3146; Michelotto, Michele/0000-0001-6644-987X; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Tabarelli de Fatis, Tommaso/0000-0001-6262-4685; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394; Matorras, Francisco/0000-0003-4295-5668; Zuniga, Juan/0000-0002-1041-6451; Vaz, Pedro/0000-0002-7186-2359; Rovelli, Tiziano/0000-0002-9746-4842; Fernandez-Alonso, Mercedes/0000-0002-1311-5275; Olshevskiy, Alexander/0000-0002-8902-1793; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Ruiz, Alberto/0000-0002-3639-0368; Zaitsev, Alexandre/0000-0002-4961-8368; Matteuzzi, Clara/0000-0002-4047-4521 NR 35 TC 74 Z9 74 U1 0 U2 7 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PY 1991 VL 52 IS 2 BP 271 EP 281 DI 10.1007/BF01560444 PG 11 WC Physics, Particles & Fields SC Physics GA GL024 UT WOS:A1991GL02400008 ER PT J AU PUNDURS, M AF PUNDURS, M TI ELECTROWEAK TRI-BOSON COUPLINGS AT LEP-II AND BEYOND SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID AMPLITUDES AB Possible non-standard model couplings of electroweak vector bosons are studied in W pair production in e+e- collisions. Helicity amplitudes are calculated in a factorized formalism; the choice of helicity basis suggested by this formalism is shown to increase sensitivity of angular correlations to anomalous couplings. In the course of this analysis, the chi-squared test for finite data samples is more carefully formulated. Both CP-conserving and CP-violating couplings are considered. C1 IIT,DEPT PHYS,CHICAGO,IL 60616. RP PUNDURS, M (reprint author), ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439, USA. NR 5 TC 2 Z9 2 U1 0 U2 0 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 PY 1991 VL 52 IS 3 BP 449 EP 453 DI 10.1007/BF01559440 PG 5 WC Physics, Particles & Fields SC Physics GA GR576 UT WOS:A1991GR57600011 ER PT J AU SCHMIDKE, WB WESS, J ZUMINO, B AF SCHMIDKE, WB WESS, J ZUMINO, B TI A Q-DEFORMED LORENTZ ALGEBRA SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID QUANTUM AB We derive a q-deformed version of the Lorentz algebra by deforming the algebra SL(2,C). The method is based on linear representations of the algebra on the complex quantum spinor space. We find that the generators usually identified with SL(q)(2,C) generate SU(q)(2) only. Four additional generators are added which generate Lorentz boosts. The full algebra of all seven generators and their coproduct is presented. We show that in the limit q --> 1 the generators are those of the classical Lorentz algebra plus an additional U(1). Thus we have a deformation of SL(2,C) x U(1). C1 UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV PHYS,THEORET PHYS GRP,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV MUNICH,SEKT PHYS,W-8000 MUNICH 2,GERMANY. RP SCHMIDKE, WB (reprint author), MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST,POB 401212,W-8000 MUNICH,GERMANY. NR 12 TC 80 Z9 81 U1 0 U2 0 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 PY 1991 VL 52 IS 3 BP 471 EP 476 DI 10.1007/BF01559443 PG 6 WC Physics, Particles & Fields SC Physics GA GR576 UT WOS:A1991GR57600014 ER PT J AU BREAKSTONE, A BUCHANAN, CD CAMPANINI, R CRAWLEY, HB CUFFIANI, M DALLAVALLE, GM DENINNO, MM DOROBA, K DRIJARD, D FABBRI, F FIRESTONE, A FISCHER, HG FLOGE, H FREHSE, H GEIST, WM GESSWEIN, L GIACOMELLI, G GOKIELI, R GORBICS, M GORSKI, M HANKE, P HEIDEN, M ISENHOWER, D KLUGE, EE LAMSA, JW LOHSE, T MANKEL, R MEYER, WT NAKADA, T PANTER, M PUTZER, A RAUSCHNABEL, K RENSCH, B RIMONDI, F SCHMELLING, M SIROLI, GP SKEENS, J SOSNOWSKI, R SZCZEKOWSKI, M ULLALAND, O WEGENER, D YEUNG, R AF BREAKSTONE, A BUCHANAN, CD CAMPANINI, R CRAWLEY, HB CUFFIANI, M DALLAVALLE, GM DENINNO, MM DOROBA, K DRIJARD, D FABBRI, F FIRESTONE, A FISCHER, HG FLOGE, H FREHSE, H GEIST, WM GESSWEIN, L GIACOMELLI, G GOKIELI, R GORBICS, M GORSKI, M HANKE, P HEIDEN, M ISENHOWER, D KLUGE, EE LAMSA, JW LOHSE, T MANKEL, R MEYER, WT NAKADA, T PANTER, M PUTZER, A RAUSCHNABEL, K RENSCH, B RIMONDI, F SCHMELLING, M SIROLI, GP SKEENS, J SOSNOWSKI, R SZCZEKOWSKI, M ULLALAND, O WEGENER, D YEUNG, R TI HIGHER-ORDER QCD EFFECTS AND PARTICLE DENSITY IN FULL PHASE-SPACE FROM HIGH PT INTERACTIONS AT THE ISR SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID LARGE-TRANSVERSE-MOMENTUM; STATE PARTON SHOWERS; HADRON PRODUCTION; PP-COLLISIONS; CHARGED PIONS; GLUON; SCATTERING; JETS; MODEL; FRAGMENTATION AB A comparison of QCD parton models with events including a high transverse momentum trigger particle is performed. The data were obtained with the Split Field Magnet (SFM) detector at the CERN ISR. The effective intrinsic transverse momentum, , of a parton is found to be about 1 GeV/c from an analysis of inclusive cross sections based upon lowest order parton-parton scattering. Large values of are also needed to obtain a good description of the particle density in the azimuthal hemisphere opposite to the trigger. The measured recoil of the spectator jets tends to require much smaller values of . The model is improved by including higher-order QCD effects. Thus, starting from = 0.45 GeV/c, an effective of about 1 GeV/c at hard scattering is generated through perturbative parton showers, which provides a consistent description of the measurements in full phase space. This analysis shows therefore that well-known problems of lowest-order QCD calculations can be resolved by inclusion of higher-order effects. C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. CERN,CH-1211 GENEVA,SWITZERLAND. UNIV HEIDELBERG,INST HOCHENERGIEPHYS,W-6900 HEIDELBERG,GERMANY. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. INST NUCL RES,PL-00681 WARSAW 91,POLAND. UNIV DORTMUND,INST PHYS,W-4600 DORTMUND 50,GERMANY. UNIV WARSAW,PL-00681 WARSAW,POLAND. UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024. RP BREAKSTONE, A (reprint author), UNIV HAWAII,HONOLULU,HI 96822, USA. NR 30 TC 3 Z9 3 U1 0 U2 0 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 PY 1991 VL 52 IS 4 BP 551 EP 557 PG 7 WC Physics, Particles & Fields SC Physics GA GV449 UT WOS:A1991GV44900002 ER PT J AU Abreu, P Adam, W Adami, A Adye, T Akesson, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Antilougus, P Apel, WD Asman, B Astier, P Augustin, JE Augustinus, A Baillon, P Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Begalli, M Beilliere, P Belokopytov, I Belous, K Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bonquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, M Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B Defoix, C Delikaris, D Delorme, S Delpierre, P Demaria, N Di Ciaccio, L Dijkstra, H Djama, F Dolbeau, J Doll, O Donszelmann, M Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fassouliotis, D Fenyuk, A Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Holthuizen, D Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Johnson, D Jonker, M Jonsson, L Juillot, P Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA Khovanski, NN King, B Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kostukhin, V Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapchine, V Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillethun, E Lindgren, J Lippi, I Llosa, R Loerstad, B Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Los, M Loukas, D Lounis, A Lozano, JJ Lucock, R Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R Mc Nulty, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V Olshevski, AG Orava, R Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinsent, A Pol, ME Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Ronjin, V Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Salt, J Sanchez, E Sanchez, J Sannino, M Schaeffer, M Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G Smadja, G Smith, GR Sosnowski, R Spassoff, TS Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Tcherniaev, E Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Todorov, T Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Trischuk, W Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J AF Abreu, P Adam, W Adami, A Adye, T Akesson, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Antilougus, P Apel, WD Asman, B Astier, P Augustin, JE Augustinus, A Baillon, P Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Begalli, M Beilliere, P Belokopytov, I Belous, K Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bonquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, M Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B Defoix, C Delikaris, D Delorme, S Delpierre, P Demaria, N Di Ciaccio, L Dijkstra, H Djama, F Dolbeau, J Doll, O Donszelmann, M Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fassouliotis, D Fenyuk, A Alonso, MF Ferrer, A Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furnival, K Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, BW Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Holthuizen, D Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Johnson, D Jonker, M Jonsson, L Juillot, P Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA Khovanski, NN King, B Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kostukhin, V Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapchine, V Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillethun, E Lindgren, J Lippi, I Llosa, R Loerstad, B Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Los, M Loukas, D Lounis, A Lozano, JJ Lucock, R Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Maltezos, S Mandl, F Marco, J Margoni, M Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R Mc Nulty, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nijjhar, B Nikolaenko, V Obraztsov, V Olshevski, AG Orava, R Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinsent, A Pol, ME Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Richardson, M Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Ronjin, V Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruckstuhl, W Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Salt, J Sanchez, E Sanchez, J Sannino, M Schaeffer, M Schneider, H Scuri, F Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skjevling, G Smadja, G Smith, GR Sosnowski, R Spassoff, TS Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Tcherniaev, E Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Todorov, T Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Trischuk, W Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vishnevsky, N Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J CA DELPHI Collaboration TI SEARCH FOR LOW MASS HIGGS BOSONS PRODUCED IN Z0 DECAYS SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID SCALAR BOSON; NUCLEAR DECAY; LIGHT SCALAR; LEP; ENERGIES; LIMITS AB A search for light Higgs bosons was performed using the data sample collected in 1990 by the DELPHI detector at LEP, at centre of mass energies between 88.2 and 94.2 GeV. Using the process e+e- --> H0 +Z0*, Z0* --> ffBAR, it is possible to exclude the existence of the standard model Higgs particle with a mass between 0 and 210 MeV/c2 at the 99% confidence level. Extending this analysis to the minimal supersymmetric standard model restricts the lightest neutral Higgs boson to masses above 28 GeV/c2 irrespective of the value of the mixing angle. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Univ Instelling Antwerp, Dept Phys, B-2610 Wilrijk, BELGIUM. ULB VUB, IIHE, B-1050 Brussels, BELGIUM. Univ Etat Mons, Serv Phys Part Elem, 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. Ist Nazl Fis Nucl, I-40126 Bologna, ITALY. Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE. CERN, CH-1211 Geneva 23, SWITZERLAND. 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RI Olshevskiy, Alexander/I-1580-2016; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Ruiz, Alberto/E-4473-2011; Zaitsev, Alexandre/B-8989-2017; Zuniga, Juan/P-4385-2014; Vaz, Pedro/K-2464-2013; Ragazzi, Stefano/D-2463-2009; Rovelli, Tiziano/K-4432-2015; Lozano-Bahilo, Julio/F-4881-2016; Tcherniaev, Evgueni/G-3453-2016; Pimenta, Mario/M-1741-2013; Gomez Cadenas, Juan Jose/L-2003-2014; Varela, Joao/K-4829-2016; OI Olshevskiy, Alexander/0000-0002-8902-1793; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Ruiz, Alberto/0000-0002-3639-0368; Zaitsev, Alexandre/0000-0002-4961-8368; Zuniga, Juan/0000-0002-1041-6451; Vaz, Pedro/0000-0002-7186-2359; Ragazzi, Stefano/0000-0001-8219-2074; Rovelli, Tiziano/0000-0002-9746-4842; Lozano-Bahilo, Julio/0000-0003-0613-140X; Tcherniaev, Evgueni/0000-0002-3685-0635; Pimenta, Mario/0000-0002-2590-0908; Matteuzzi, Clara/0000-0002-4047-4521; Demaria, Natale/0000-0003-0743-9465; Bonesini, Maurizio/0000-0001-5119-1896; Sannino, Mario/0000-0001-7700-8383; De Angelis, Alessandro/0000-0002-3288-2517; Gomez Cadenas, Juan Jose/0000-0002-8224-7714; Varela, Joao/0000-0003-2613-3146; De Lotto, Barbara/0000-0003-3624-4480; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394; Matorras, Francisco/0000-0003-4295-5668 NR 30 TC 24 Z9 24 U1 0 U2 5 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. 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Fields PY 1991 VL 51 IS 1 BP 25 EP 35 PG 11 WC Physics, Particles & Fields SC Physics GA FU807 UT WOS:A1991FU80700003 ER PT J AU Abreu, P Adam, W Adami, F Adye, T Alexeev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Ferreres, CA Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Doll, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Gasparini, U Gavillet, P Gawne, S Gazis, EN Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Ivanyushenkov, I Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lancerl, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poliakov, B Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Tchikilev, O Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J AF Abreu, P Adam, W Adami, F Adye, T Alexeev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Ferreres, CA Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Doll, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Gasparini, U Gavillet, P Gawne, S Gazis, EN Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Goobar, A Gopal, G Gorski, M Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Ivanyushenkov, I Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lancerl, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matteuzzi, C Matthiae, G Mazzucato, M McCubbin, M McKay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poliakov, B Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Tchikilev, O Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J CA DELPHI Collaboration TI CHARGED-PARTICLE MULTIPLICITY DISTRIBUTIONS IN Z0 HADRONIC DECAYS SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID LUND MONTE-CARLO; NEGATIVE BINOMIAL-DISTRIBUTION; TOTAL CROSS-SECTION; NON-LEADING TERMS; E+E ANNIHILATION; QCD JETS; 250 GEV/C; FRAGMENTATION; PETRA; COLLISIONS AB This paper presents an analysis of the multiplicity distributions of charged particles produced in Z0 hadronic decays in the DELPHI detector. It is based on a sample of 25 364 events. The average multiplicity is [n(ch)] = 20.71 +/- 0.04(stat) +/- 0.77(syst) and the dispersion D = 6.28 +/- 0.03 (stat) +/- 0.43 (syst). The data are compared with the results at lower energies and with the predictions of phenomenological models. The Lund parton shower model describes the data reasonably well. The multiplicity distributions show approximate KNO-scaling. They also show positive forward-backward correlations that are strongest in the central region of rapidity and for particles of opposite charge. C1 Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Univ Instelling Antwerp, Dept Phys, B-2610 Wilrijk, BELGIUM. ULB VUB, IIHE, B-1050 Brussels, BELGIUM. Univ Etat Mons, Fac Sci, Serv Phys Part Elem, 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. Ist Nazl Fis Nucl, I-40126 Bologna, ITALY. Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE. CERN, CH-1211 Geneva 23, SWITZERLAND. CRN Grp DELPHI, Div Hautes Energies, F-67037 Strasbourg, FRANCE. Nucl Res Ctr Demokritos, Greek Atom Energy Commiss, GR-15310 Aghia Paraskevi, GREECE. Univ Genoa, Dipartimento Fis, I-16146 Genoa, ITALY. Ist Nazl Fis Nucl, I-16146 Genoa, ITALY. Univ Helsinki, Dept High Energy Phys, SF-00170 Helsinki 17, FINLAND. Joint Inst Nucl Res, SU-101000 Moscow, RUSSIA. Univ Karlsruhe, Inst Expt Kernphys, W-7500 Karlsruhe 1, GERMANY. Inst Nucl Phys, High Energy Phys Lab, PL-30055 Krakow 30, POLAND. Univ Paris Sud, Lab Accelerateur Lineaire, F-91405 Orsay, FRANCE. LIP, P-1000 Lisbon, PORTUGAL. Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, ENGLAND. Univ Paris 06, LPNHE, F-75230 Paris 05, FRANCE. Univ Paris 07, LPNHE, F-75230 Paris 05, FRANCE. Univ Lund, Dept Phys, S-22363 Lund, SWEDEN. Univ Milan, Dipartmento Fis, I-20133 Milan, ITALY. Ist Nazl Fis Nucl, I-20133 Milan, ITALY. Niels Bohr Inst, DK-2100 Copenhagen 0, DENMARK. NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS. Natl Tech Univ, Dept Phys, GR-15773 Athens, GREECE. Univ Oslo, Dept Phys, N-1000 Oslo 3, NORWAY. Univ Oxford, Nucl Phys Lab, Oxford OX1 3RH, ENGLAND. Univ Padua, Dipartimento Fis, I-35131 Padua, ITALY. Ist Nazl Fis Nucl, I-35131 Padua, ITALY. Rutherford Appleton Lab, Chilton OXll OQX, Didcot, ENGLAND. CEN Saclay, DPhPE, F-91191 Gif Sur Yvette, FRANCE. Ist Nazl Fis Nucl, Ist Super Sanita, I-01161 Rome, ITALY. Univ Rome 2, Dipartimento Fis, I-00173 Rome, ITALY. Ist Nazl Fis Nucl, I-00173 Rome, ITALY. Univ Santander, Fac Ciencias, E-39005 Santander, SPAIN. Inst High Energy Phys, Protvino, Moscow Region, RUSSIA. Univ Stockholm, Inst Phys, S-11346 Stockholm, SWEDEN. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, ITALY. Ist Nazl Fis Nucl, I-10125 Turin, ITALY. Univ Trieste, Dipartimento Fis, I-34127 Trieste, ITALY. Ist Nazl Fis Nucl, I-34127 Trieste, ITALY. Univ Udine, Ist Fis, I-33100 Udine, ITALY. Univ Uppsala, Dept Radiat Sci, S-75121 Uppsala, SWEDEN. Univ Valencia, Inst Fis Corpuscular IFIC, Ctr Mixto, CSIC, E-46100 Burjassot, Valencia, SPAIN. Osterreich 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, W-5600 Wuppertal 1, GERMANY. RP Abreu, P (reprint author), LIP, Av Elias Garcia 14-1e, P-1000 Lisbon, PORTUGAL. RI Zuniga, Juan/P-4385-2014; Vaz, Pedro/K-2464-2013; Ragazzi, Stefano/D-2463-2009; Rovelli, Tiziano/K-4432-2015; Fernandez-Alonso, Mercedes/F-2557-2016; Lozano-Bahilo, Julio/F-4881-2016; SANCHIS, ENRIQUE/J-7348-2016; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Ruiz, Alberto/E-4473-2011; Zaitsev, Alexandre/B-8989-2017; Pimenta, Mario/M-1741-2013; Varela, Joao/K-4829-2016; OI Zuniga, Juan/0000-0002-1041-6451; Vaz, Pedro/0000-0002-7186-2359; Ragazzi, Stefano/0000-0001-8219-2074; Rovelli, Tiziano/0000-0002-9746-4842; Fernandez-Alonso, Mercedes/0000-0002-1311-5275; Lozano-Bahilo, Julio/0000-0003-0613-140X; SANCHIS, ENRIQUE/0000-0002-9689-9131; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Ruiz, Alberto/0000-0002-3639-0368; Zaitsev, Alexandre/0000-0002-4961-8368; Matteuzzi, Clara/0000-0002-4047-4521; Pimenta, Mario/0000-0002-2590-0908; DE MIN, ALBERTO/0000-0002-8130-9389; Demaria, Natale/0000-0003-0743-9465; Sannino, Mario/0000-0001-7700-8383; De Angelis, Alessandro/0000-0002-3288-2517; Varela, Joao/0000-0003-2613-3146; De Lotto, Barbara/0000-0003-3624-4480; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394 NR 44 TC 104 Z9 104 U1 0 U2 10 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0170-9739 J9 Z PHYS C PART FIELDS JI Z. Phys. C-Part. Fields PY 1991 VL 50 IS 2 BP 185 EP 194 PG 10 WC Physics, Particles & Fields SC Physics GA FJ492 UT WOS:A1991FJ49200002 ER PT J AU GRABIAK, M CASADO, JA GYULASSY, M AF GRABIAK, M CASADO, JA GYULASSY, M TI NIELSEN-OLESEN VORTICES AND INDEPENDENT STRING FRAGMENTATION SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID RESONANCE PHYSICS; QCD AB We show that heavy quark spectroscopy and QCD sum rules constrain Nielsen-Olesen vortices to be thin and weakly interacting. This model of QCD strings may help to understand how independent string fragmentation models can apply to high energy nuclear collisions. RP GRABIAK, M (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 29 TC 5 Z9 5 U1 0 U2 1 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 PY 1991 VL 49 IS 2 BP 283 EP 286 DI 10.1007/BF01555502 PG 4 WC Physics, Particles & Fields SC Physics GA EX046 UT WOS:A1991EX04600011 ER PT J AU BOCA, G LEVINTHAL, D LOPEZ, F GEORGIOPOULOS, C GOLDMAN, H HAGOPIAN, S HAGOPIAN, V JOHNSON, KF STREETS, J STREETS, K WHITE, HB CRISLER, M LATHROP, A PORDES, S CUMMINGS, M GUSTAFSON, HR AF BOCA, G LEVINTHAL, D LOPEZ, F GEORGIOPOULOS, C GOLDMAN, H HAGOPIAN, S HAGOPIAN, V JOHNSON, KF STREETS, J STREETS, K WHITE, HB CRISLER, M LATHROP, A PORDES, S CUMMINGS, M GUSTAFSON, HR TI AVERAGE FRACTION OF JET MOMENTUM CARRIED BY HIGH P-PERPENDICULAR-TO LEADING HADRONS SO ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS LA English DT Article ID TRANSVERSE-MOMENTUM; DEPENDENCE AB The average fraction, , of jet momentum carried by the associated charged leading hadron has been determined in the reaction p + N --> h1 + h2 + X where N is the target nucleon; h1, h2 are the leading particles of two jets produced at high P perpendicular-to. An 800 GeV/c proton beam and 4 nuclear targets: Be, Al, Fe and W were used. The distributions agree with the QCD-parton model predictions for single independent proton-nucleon scattering and independent fragmentation process. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV MICHIGAN,ANN ARBOR,MI 48109. UNIV PAVIA,SEZIONE INFN,I-27100 PAVIA,ITALY. RP BOCA, G (reprint author), FLORIDA STATE UNIV,TALLAHASSEE,FL 32306, USA. NR 20 TC 7 Z9 7 U1 0 U2 1 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 PY 1991 VL 49 IS 4 BP 543 EP 553 DI 10.1007/BF01483569 PG 11 WC Physics, Particles & Fields SC Physics GA FD610 UT WOS:A1991FD61000002 ER PT J AU HEIL, O DUBOIS, RD MAIER, R KUZEL, M GROENEVELD, KO AF HEIL, O DUBOIS, RD MAIER, R KUZEL, M GROENEVELD, KO TI A SYSTEMATIC INVESTIGATION OF IONIZATION OCCURRING IN FEW ELECTRON COLLISION SYSTEMS - H0, HE0 IMPACT ON HE SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID ENERGY; ATOM; IONS AB Absolute doubly differential cross sections for electron emission occurring in fast (0.5 MeV/amu) H0 - and He0 - He collisions have been measured using standard non-coincidence techniques as well as emitted electron - charge state analysed projectile coincidence techniques. The comparison of these data with results obtained for H+ and He+ impact provides insight into the influence of one or two loosely bound projectile electrons on the probabilities for projectile, target, and simultaneous projectile - target ionization. PWBA calculations for these systems demonstrate good agreement with the experimental data for target and projectile ionization and indicate the importance of including simultaneous ionization processes in the theoretical treatment. C1 UNIV FRANKFURT, INST KERNPHYS, W-6000 FRANKFURT, GERMANY. PACIFIC NW LAB, RICHLAND, WA 99352 USA. NR 15 TC 12 Z9 12 U1 0 U2 1 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 PY 1991 VL 21 IS 3 BP 235 EP 239 PG 5 WC Physics, Atomic, Molecular & Chemical SC Physics GA GG698 UT WOS:A1991GG69800010 ER PT J AU KLOTS, CE AF KLOTS, CE TI KINETIC METHODS FOR QUANTIFYING MAGIC SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID METAL-CLUSTERS; IONS; EVAPORATION; ENERGY; DECAY AB Two methods are described for obtaining activation energies for evaporation from isolated clusters. They involve measurements of (1) kinetic energy distributions during evaporation and (2) metastable decay probabilities. The two methods supplement each other and can be applied to data garnered in the same apparatus. The methods are illustrated with applications to data in the literature on copper and carbon clusters. An even/odd alternation in evaporation energies from the copper clusters is consistent with a similar alternation in electron affinities, but not with elementary theory. Thermodynamic properties of carbon clusters are also deduced and discussed. RP KLOTS, CE (reprint author), OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. NR 25 TC 167 Z9 168 U1 0 U2 1 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 PY 1991 VL 21 IS 4 BP 335 EP 342 PG 8 WC Physics, Atomic, Molecular & Chemical SC Physics GA GM395 UT WOS:A1991GM39500008 ER PT J AU BEIERSDORFER, P CHANTRENNE, S CHEN, MH MARRS, RE VOGEL, DA WONG, KL ZASADZINSKI, R AF BEIERSDORFER, P CHANTRENNE, S CHEN, MH MARRS, RE VOGEL, DA WONG, KL ZASADZINSKI, R TI DIELECTRONIC RECOMBINATION INTO RYDBERG LEVELS OF LITHIUM-LIKE TITANIUM SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID HIGHLY CHARGED IONS; SATELLITE SPECTRA; LINES AB To characterize line formation near threshold for electron-impact excitation, dielectronic capture into high-n levels in lithiumlike Ti19+ ions has been studied with high-resolution x-ray spectroscopy on the Livermore electron beam ion trap. The process is shown to result in satellite lines which are virtually indistinguishable from their dipole-allowed heliumlike parent lines. High-n satellite lines are absent from dipole-forbidden heliumlike lines. RP BEIERSDORFER, P (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550, USA. NR 15 TC 6 Z9 6 U1 1 U2 1 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 PY 1991 VL 21 SU S BP S209 EP S211 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500054 ER PT J AU BERNSTEIN, EM CLARK, MW TANIS, JA GRAHAM, WG MORGAN, TJ STOCKLI, MP BERKNER, KH SCHLACHTER, AS STEARNS, JW AF BERNSTEIN, EM CLARK, MW TANIS, JA GRAHAM, WG MORGAN, TJ STOCKLI, MP BERKNER, KH SCHLACHTER, AS STEARNS, JW TI ENHANCED RADIATIVE AUGER EMISSION FROM LITHIUM-LIKE CA-20(17+) SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB Radiative Auger emission (RAE) from lithiumlike 20Ca17+ projectiles excited in collisions with He has been measured. The intensity of RAE photons relative to K-alpha x-ray emission is enhanced by a factor of 10 - 17 compared with theoretical calculations for ions with few electron vacancies. The enhancement of RAE for Ca17+ is consistent with the results reported previously for lithiumlike 16S13+ and 23V20+ and indicates a systematic dependence on Z. Both the enhancement and the relative RAE transition rate increase with Z. C1 QUEENS UNIV BELFAST,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. WESLEYAN UNIV,MIDDLETOWN,CT 06457. KANSAS STATE UNIV AGR & APPL SCI,MANHATTAN,KS 66506. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP BERNSTEIN, EM (reprint author), WESTERN MICHIGAN UNIV,KALAMAZOO,MI 49008, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 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 PY 1991 VL 21 SU S BP S231 EP S232 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500062 ER PT J AU BRUCH, R WANG, H SCHNEIDER, D LIPSKY, L CONNEELY, MJ AF BRUCH, R WANG, H SCHNEIDER, D LIPSKY, L CONNEELY, MJ TI DOUBLY EXCITED-STATES OF 3-ELECTRON SYSTEMS (Z = 2 TO 10) BELOW THE (1S2I)SL-PI THRESHOLD SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID ELECTRON; SPECTRA; IONS; RECALIBRATION; CARBON AB A systematic experimental and theoretical study of doubly excited 1s2lnl' states of three-electron ions has been performed. Theoretically the truncated diagonalization method (TDM) has been used to generate both non-relativistic and relativistic energy values, wave functions and quantum defects for 42 different Rydberg series converging to four different thresholds, i.e. (1s2s)3S(e), 1S(e) and (1s2p)3P(o), 1P(o). This comprehensive data base has been used to classify recent high resolution Auger electron spectra arising from Li-like states. Specifically we have analyzed He-, C3+, O5+ and Ne7+ Auger electron data produced by double electron capture in slow ion-atom collisions. Numerous new lines associated with (1s2lnl') Rydberg levels have been identified. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550. UNIV CONNECTICUT,DEPT COMP SCI,STORRS,CT 06268. RP BRUCH, R (reprint author), UNIV NEVADA,DEPT PHYS,ATOM & MOLEC COLLIS LAB,RENO,NV 89557, USA. NR 9 TC 0 Z9 0 U1 1 U2 1 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 PY 1991 VL 21 SU S BP S227 EP S229 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500061 ER PT J AU DATZ, S DITTNER, PF DELCAMPO, JG KRAUSE, HF ROSSEEL, TM VANE, CR AF DATZ, S DITTNER, PF DELCAMPO, JG KRAUSE, HF ROSSEEL, TM VANE, CR TI ELECTRON-ION INTERACTIONS IN CRYSTAL CHANNELS - COLLISIONS IN ULTRA-DENSE ELECTRON MEDIA SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID RESONANT TRANSFER; EXCITATION; DEPENDENCE AB Dielectronic excitation of H-like S, Ca and Ti is shown to occur in the dense electron gas of a crystal channel. Cross sections for collisional ionization of the short lived excited states can then be determined. Ionic excitation can also be achieved by resonant coherent excitation in which case specific m states can be excited for further study. RP DATZ, S (reprint author), OAK RIDGE NATL LAB,OAK RIDGE,TN 37831, USA. RI Rosseel, Thomas/J-4086-2016 OI Rosseel, Thomas/0000-0001-9917-7073 NR 13 TC 4 Z9 4 U1 0 U2 2 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 PY 1991 VL 21 SU S BP S45 EP S50 PG 6 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500010 ER PT J AU DUBOIS, RD HERRMANN, R FENG, J DORNER, R EULER, J ULLMANN, K AF DUBOIS, RD HERRMANN, R FENG, J DORNER, R EULER, J ULLMANN, K TI CORRELATIONS BETWEEN CHARGED-PARTICLES EMITTED IN ION-MOLECULE COLLISIONS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB A new experimental apparatus for studying correlations between charged particles emitted in ion-atom collisions is described. The apparatus consists of two channelplate detectors, each equipped with position sensitive anodes. Time correlated events in both detectors provide information about correlated charged particle emission. Initial test studies of dissociative double ionization for H-2 and N2 targets are reported here. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. UNIV LANZHOU, DEPT PHYS, LANZHOU, PEOPLES R CHINA. RP DUBOIS, RD (reprint author), UNIV FRANKFURT, INST KERNPHYS, AUGUST EULER STR 6, W-6000 FRANKFURT, GERMANY. RI Doerner, Reinhard/A-5340-2008 OI Doerner, Reinhard/0000-0002-3728-4268 NR 0 TC 0 Z9 0 U1 0 U2 1 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 PY 1991 VL 21 SU S BP S259 EP S260 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500075 ER PT J AU DUNFORD, RW BERRY, HG CHURCH, DA DINNEEN, TP HASS, M LIU, CJ BERRAHMANSOUR, N PARDO, RC RAPHAELIAN, MLA YOUNG, L ZABRANSKY, BJ CURTIS, LJ AF DUNFORD, RW BERRY, HG CHURCH, DA DINNEEN, TP HASS, M LIU, CJ BERRAHMANSOUR, N PARDO, RC RAPHAELIAN, MLA YOUNG, L ZABRANSKY, BJ CURTIS, LJ TI PRECISION SPECTROSCOPIC MEASUREMENTS IN FEW-ELECTRON IONS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID HELIUMLIKE IONS; DECAY-RATES; STATE; HYDROGENLIKE; TRANSITIONS; LIFETIME AB We describe recent precision experiments in few-electron ions including measurements of the lifetimes of two-photon-emitting levels in Ni26+ and Ni27+, a measurement of the lifetime of the 2(3)S1 level in Br33+ and measurements of the 2(3)S1 --> 2(3)P0,1,2 transition energies in B3+. C1 UNIV TOLEDO,DEPT PHYS & ASTRON,TOLEDO,OH 43606. RP DUNFORD, RW (reprint author), ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439, USA. NR 14 TC 5 Z9 5 U1 0 U2 1 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 PY 1991 VL 21 SU S BP S13 EP S16 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500004 ER PT J AU GRAHAM, WG BERKNER, KH BERNSTEIN, EM CLARK, MW FEINBERG, B MCMAHAN, MA MORGAN, TJ RATHBUN, W SCHLACHTER, AS TANIS, JA AF GRAHAM, WG BERKNER, KH BERNSTEIN, EM CLARK, MW FEINBERG, B MCMAHAN, MA MORGAN, TJ RATHBUN, W SCHLACHTER, AS TANIS, JA TI MEASUREMENTS OF RESONANT TRANSFER AND EXCITATION CROSS-SECTIONS FOR U-90+ PROJECTILES IN H-2 SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID ELECTRON-TRANSFER; COLLISIONS; CAPTURE; HE AB Resonant transfer and excitation (RTE), resulting from simultaneous electron capture and K-shell excitation in a single collision, has been measured for 97 to 150 MeV/u U90+ ions in molecular hydrogen. This measurement, the first for a very heavy projectile, provides a test of relativistic dielectronic-recombination (DR) theory. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. WESTERN MICHIGAN UNIV,DEPT PHYS,KALAMAZOO,MI 49008. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. WESLEYAN UNIV,DEPT PHYS,MIDDLETOWN,CT 06457. RP GRAHAM, WG (reprint author), QUEENS UNIV BELFAST,DEPT PHYS,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. OI Graham, William/0000-0003-2759-4657 NR 12 TC 0 Z9 0 U1 0 U2 0 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 PY 1991 VL 21 SU S BP S213 EP S214 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500055 ER PT J AU HAVENER, CC NESNIDAL, MP PORTER, MR PHANEUF, RA AF HAVENER, CC NESNIDAL, MP PORTER, MR PHANEUF, RA TI ELECTRON-CAPTURE IN SLOW COLLISIONS OF MULTICHARGED IONS WITH HYDROGEN-ATOMS USING MERGED BEAMS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID CHARGE-TRANSFER; CROSS-SECTIONS AB Absolute total electron-capture cross-section measurements are reported for collisions of O3+ and O4+ with atomic hydrogen in the energy range 1-1000 eV/amu using merged beams. The data are compared with available coupled-states theoretical calculations. RP HAVENER, CC (reprint author), OAK RIDGE NATL LAB,DIV PHYS,POB 2008,OAK RIDGE,TN 37831, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 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 PY 1991 VL 21 SU S BP S243 EP S244 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500068 ER PT J AU HEIL, O MAIER, R DUBOIS, RD KUZEL, M GROENEVELD, KO AF HEIL, O MAIER, R DUBOIS, RD KUZEL, M GROENEVELD, KO TI DOUBLY DIFFERENTIAL ELECTRON-EMISSION CROSS-SECTIONS FOR HE-0 (0.5 MEV/AMU)-]HE COLLISIONS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB Absolute differential cross sections for electron emission occurring in fast (0.5 MeV/amu) He-degrees-He collisions have been measured using standard non-coincidence as well as emitted electron- charge state analysed ejectile coincidence techniques. PWBA calculations for this system demonstrate good agreement with the experimental data for target and projectile ionization and indicate the importance of including simultaneous processes in the theoretical treatment. C1 PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP HEIL, O (reprint author), JW GOETHE UNIV, INST KERNPHYS, AUGUST EULER STR 6, W-6000 FRANKFURT 90, GERMANY. NR 7 TC 0 Z9 0 U1 0 U2 1 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 PY 1991 VL 21 SU S BP S333 EP S335 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500106 ER PT J AU KLAPISCH, M DUFFY, P GOLDSTEIN, WH AF KLAPISCH, M DUFFY, P GOLDSTEIN, WH TI A MONTE-CARLO MODEL OF COMPLEX SPECTRA FOR OPACITY CALCULATIONS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB We are developing a Monte Carlo method for calculating opacities of complex spectra. It should be faster than atomic structure codes and is more accurate than the UTA method. We use the idea that wavelength-averaged opacities depend on the overall properties, but not the details, of the spectrum; our spectra have the same statistical properties as real ones but the strength and energy of each line is random. In preliminary tests we can get Rosseland mean opacities within 20% of actual values. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP KLAPISCH, M (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 1 TC 0 Z9 0 U1 3 U2 3 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 PY 1991 VL 21 SU S BP S185 EP S186 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500045 ER PT J AU KNAPP, DA AF KNAPP, DA TI DIELECTRONIC RECOMBINATION MEASUREMENTS AT EBIT SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB The Electron Beam Ion Trap at the Lawrence Livermore National Laboratory has proved an ideal device for the study of interactions between electrons and highly-charged ions. I describe measurements of one such interaction, dielectronic recombination, in several ion species. The results are in marginal agreement with theoretical predictions. RP KNAPP, DA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550, USA. NR 12 TC 11 Z9 11 U1 0 U2 3 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 PY 1991 VL 21 SU S BP S143 EP S146 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500027 ER PT J AU SCHLACHTER, AS AF SCHLACHTER, AS TI THE ADVANCED LIGHT-SOURCE - A NEW TOOL FOR RESEARCH IN ATOMIC PHYSICS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID HIGHLY CHARGED IONS; SYNCHROTRON RADIATION; EXCITATION AB The Advanced Light Source, a third-generation national synchrotron-radiation facility now under construction at the Lawrence Berkeley Laboratory in Berkeley, California, is scheduled to begin serving qualified users across a broad spectrum of research areas in the spring of 1993. Undulators will generate high-brightness, partially coherent, plane polarized, soft x-ray and ultraviolet (XUV) radiation from below 10 eV to above 2 keV. Wigglers and bend magnets will generate high fluxes of x-rays to photon energies above 10 keV. The ALS will have an extensive research program in which XUV radiation is used to study matter in all its varied gaseous, liquid, and solid forms. RP SCHLACHTER, AS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,ACCELERATOR & FUS RES DIV,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 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 PY 1991 VL 21 SU S BP S359 EP S360 PG 2 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500115 ER PT J AU VOGEL, D BEIERSDORFER, P MARRS, R WONG, K ZASADZINSKI, R AF VOGEL, D BEIERSDORFER, P MARRS, R WONG, K ZASADZINSKI, R TI INNER-SHELL IONIZATION OF LITHIUM-LIKE CHROMIUM IONS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID DIELECTRONIC RECOMBINATION AB We have used high-resolution x-ray spectroscopy to investigate inner-shell ionization of Cr21+ ions by electron impact using the Electron Beam Ion Trap at Lawrence Livermore Laboratory. Our measurements indicate that inner-shell ionization enhances the intensity of the radiative transition 1s2s 3S1 --> 1s2 1S0. RP VOGEL, D (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550, USA. NR 7 TC 6 Z9 6 U1 0 U2 0 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 PY 1991 VL 21 SU S BP S193 EP S195 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500048 ER PT J AU WAHLIN, EK THOMPSON, JS DUNN, GH PHANEUF, RA GREGORY, DC SMITH, ACH AF WAHLIN, EK THOMPSON, JS DUNN, GH PHANEUF, RA GREGORY, DC SMITH, ACH TI ELECTRON-IMPACT EXCITATION OF MULTIPLY-CHARGED IONS USING ENERGY-LOSS IN MERGED BEAMS - E+SI-3+(3S2S1/2)-]E+SI-3+(3P2P1/2,3/2) SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV AB For the first time absolute total cross sections for electron-impact excitation of a multiply-charged ion have been measured using an electron-energy-loss technique. Measurements were made near threshold for the process e + Si3+(3s2S1/2) --> e + Si3+(3p2P1/2, 3/2) - 8.88 eV. The 10(-15) cm2 measured cross section agrees with results of 7 - state close coupling calculations to better than the +/- 20% (90% CL) total uncertainty of the measurements. Convoluting the theoretical curve with a Gaussian energy distribution indicates an energy width of 0.15 less-than-or-similar-to DELTA-E less-than-or-similar-to 0.20 eV. C1 UNIV COLORADO,NATL STAND & TECHNOL,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. OAK RIDGE NATL LAB,JOINT INST LAB ASTROPHYS,OAK RIDGE,TN 37831. UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND. NR 15 TC 1 Z9 1 U1 0 U2 1 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 PY 1991 VL 21 SU S BP S35 EP S38 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500008 ER PT J AU WONG, KL BEIERSDORFER, P VOGEL, D MARRS, R LEVINE, M AF WONG, KL BEIERSDORFER, P VOGEL, D MARRS, R LEVINE, M TI ELECTRON-IMPACT IONIZATION CROSS-SECTION MEASUREMENT OF LITHIUM-LIKE BA SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL CONF ON THE ATOMIC PHYSICS OF HIGHLY CHARGED IONS CY SEP 10-14, 1990 CL JUSTUS LIEBIG UNIV, GIESSEN, GERMANY HO JUSTUS LIEBIG UNIV ID HIGHLY CHARGED IONS; RATES AB The electron impact ionization cross section of Li-like Ba53+ has been measured at 22 keV using an electron beam ion trap. The measurement makes use of a novel technique which is discussed in detail. We find a value that is somewhat higher than predicted. RP WONG, KL (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV HIGH TEMP PHYS,LIVERMORE,CA 94550, USA. NR 12 TC 11 Z9 11 U1 0 U2 1 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 PY 1991 VL 21 SU S BP S197 EP S199 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA GK215 UT WOS:A1991GK21500049 ER PT J AU KLOTS, CE AF KLOTS, CE TI SYSTEMATICS OF EVAPORATION SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL SYMP ON SMALL PARTICLES AND INORGANIC CLUSTERS CY SEP 10-14, 1990 CL KONSTANZ, FED REP GER ID ION AB Beginning with rather basic principles, general relations are obtained for evaporative rate constants. These are established both as a function of energy and of temperature. In parallel with this, expressions are developed for the kinetic energy distribution of the separating species. Explicit evaluation of the rate constants in the case of "chemical" evaporation from an entity containing n monomeric units yields as a typical result k(T)(s-1) = 3.10(13)n2/3 exp[6/n1/3]exp(-DELTA-E(a)(n)/k(B)T). Experimental evidence in support of this relation is cited. Applications to thermionic emission are also noted. RP KLOTS, CE (reprint author), OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,CHEM PHYS SECT,OAK RIDGE,TN 37831, USA. NR 19 TC 178 Z9 178 U1 0 U2 5 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 PY 1991 VL 20 IS 1-4 BP 105 EP 109 PG 5 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ943 UT WOS:A1991FQ94300027 ER PT J AU GARZON, IL JELLINEK, J AF GARZON, IL JELLINEK, J TI MELTING OF GOLD MICROCLUSTERS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article ID MOLECULAR-DYNAMICS; STRUCTURAL-PROPERTIES; CLUSTERS AB The transition from solid-like to liquid-like behavior in Au(n), n = 6, 7, 13, clusters is studied using molecular dynamics simulations. A Gupta-type potential with all-neighbour interactions is employed to incorporate n-body effects. The melting-like transition is described in terms of short-time averages of the kinetic energy per particle, root-mean-square bond length fluctuations and mean square displacements. A comparison between melting temperatures of Au(n) and Ni(n) clusters is presented. C1 ARGONNE NATL LAB, DIV CHEM, ARGONNE, IL 60439 USA. RP UNIV NACL AUTONOMA MEXICO, INST FIS, APARTADO POSTAL 2681, ENSENADA 22800, BAJA CALIFORNIA, MEXICO. NR 19 TC 68 Z9 69 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0178-7683 J9 Z PHYS D ATOM MOL CL JI Z. Phys. D-Atoms Mol. Clusters PY 1991 VL 20 IS 1-4 BP 235 EP 238 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ943 UT WOS:A1991FQ94300059 ER PT J AU JELLINEK, J GARZON, IL AF JELLINEK, J GARZON, IL TI STRUCTURAL AND DYNAMIC PROPERTIES OF TRANSITION-METAL CLUSTERS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL SYMP ON SMALL PARTICLES AND INORGANIC CLUSTERS CY SEP 10-14, 1990 CL KONSTANZ, FED REP GER ID RELAXATION AB Results of molecular dynamics simulation studies of structural and dynamical properties of 12-, 13-, and 14-atom transition metal clusters are presented. The calculations are carried out using a Gupta-like potential expressed in reduced units. The transformation to absolute units involves two size-dependent parameters which effectively convert the potential into a size-dependent one. The minimum energy geometries of the clusters are obtained through the technique of simulated thermal quenching. A melting-like transition is observed as the energy of the clusters is increased. A novel element of the transition is that it may involve a premelting state. C1 UNIV NACL AUTONOMA MEXICO,INST FIS,ENSENADA 22800,BAJA CALIFORNIA,MEXICO. RP JELLINEK, J (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 23 TC 96 Z9 98 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 PY 1991 VL 20 IS 1-4 BP 239 EP 242 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ943 UT WOS:A1991FQ94300060 ER PT J AU JELLINEK, J GUVENC, ZB AF JELLINEK, J GUVENC, ZB TI DISSOCIATIVE CHEMISORPTION OF D2 ON A NI13 CLUSTER SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL MEETING ON SMALL PARTICLES AND INORGANIC CLUSTERS CY SEP 10-14, 1990 CL CONSTANCE, FED REP GER SP DEUT FORSCHUNGEMEINSCH, UNIV KONSTANZ ID STRUCTURAL ISOMERS; METAL CLUSTER; REACTIVITY; C2H4; H-2 AB Selected characteristic results of a quasiclassical trajectory study of dissociative adsorption of a D2 molecule on a Ni13 cluster are presented. These include detailed probabilities as functions of the impact parameter and of the relative translational energy of D2, and cross sections as functions of this energy. The roles of the initial rovibrational state of the D2 molecule and of the initial temperature of the cluster are examined. The effect of freezing the cluster into a rigid geometry is tested. RP JELLINEK, J (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. NR 15 TC 26 Z9 27 U1 0 U2 0 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 PY 1991 VL 19 IS 1-4 BP 371 EP 373 PG 3 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ942 UT WOS:A1991FQ94200089 ER PT J AU WINTER, BJ KLOTS, TD PARKS, EK RILEY, SJ AF WINTER, BJ KLOTS, TD PARKS, EK RILEY, SJ TI CHEMICAL-IDENTIFICATION OF ICOSAHEDRAL STRUCTURE FOR COBALT AND NICKEL CLUSTERS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL MEETING ON SMALL PARTICLES AND INORGANIC CLUSTERS CY SEP 10-14, 1990 CL CONSTANCE, FED REP GER SP DEUT FORSCHUNGEMEINSCH, UNIV KONSTANZ ID ELECTRONIC SHELL STRUCTURE; METAL-CLUSTERS; MAGIC NUMBERS; CHEMISORPTION; IONIZATION; ADSORPTION; NI(111); COPPER; WATER; KR AB Reactions of bare and hydrogenated cobalt and nickel clusters with ammonia and with water are used to determine cluster geometrical structure. Saturation measurements determine the total number of ammonia binding sites on cluster surfaces. A pattern of minima in the number of such sites is found to correlate with the sequence of closed shells and subshells expected for icosahedral packing in the 50- to 120-atom size range (50- to 200-atom range for hydrogenated clusters). In many cases there are 12 sites at the minima, the number that would be expected for preferred ammonia binding sites on closed (sub)shells of icosahedral clusters. The equilibrium adsorption of a single water molecule provides a sensitive measure of changes in cluster-water binding energy. A pattern of binding energy maxima is found, once again correlating with icosahedral structure, but for clusters having one metal atom more than the closed (sub)shells. In general, hydrogenation enhances the patterns of minima and maxima. These observations are explained in terms of the expected nature of ammonia and water binding to icosahedral clusters. RP WINTER, BJ (reprint author), ARGONNE NATL LAB,DIV TECHNOL,ARGONNE,IL 60439, USA. RI Winter, Bernd/D-4657-2011 NR 26 TC 22 Z9 22 U1 0 U2 8 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 PY 1991 VL 19 IS 1-4 BP 375 EP 380 PG 6 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ942 UT WOS:A1991FQ94200090 ER PT J AU WINTER, BJ KLOTS, TD PARKS, EK RILEY, SJ AF WINTER, BJ KLOTS, TD PARKS, EK RILEY, SJ TI ADSORBATE BINDING-ENERGIES FOR AMMONIA ON COBALT AND NICKEL CLUSTERS SO ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS LA English DT Article; Proceedings Paper CT 5TH INTERNATIONAL MEETING ON SMALL PARTICLES AND INORGANIC CLUSTERS CY SEP 10-14, 1990 CL CONSTANCE, FED REP GER SP DEUT FORSCHUNGEMEINSCH, UNIV KONSTANZ ID IRON CLUSTERS; IONS; CHEMISORPTION; DECOMPOSITION; HYDROGEN; SURFACE; NH3 AB Equilibrium reactions of ammonia with cobalt and nickel clusters are analyzed to determine cluster-adsorbate binding energies. The temperature dependence of reaction equilibrium constants K(eq) are measured and - DELTA-H0 values obtained from plots of 1nK(eq) vs 1/T. We find that binding energies generally decrease with increasing ammonia coverage, and that for a given number of NH3 molecules binding energies increase with increasing cluster size. The pattern of binding energies is found to be consistent with proposed geometrical structures for Co19 and for clusters in the 55-atom size range. Cluster-ammonia binding energies are generally somewhat higher than for bulk metal surfaces, an expected result considering the character of the cluster surface and the nature of the NH3-metal interaction. RP WINTER, BJ (reprint author), ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439, USA. RI Winter, Bernd/D-4657-2011 NR 15 TC 12 Z9 12 U1 1 U2 5 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 PY 1991 VL 19 IS 1-4 BP 381 EP 384 PG 4 WC Physics, Atomic, Molecular & Chemical SC Physics GA FQ942 UT WOS:A1991FQ94200091 ER PT J AU ANGERHOFER, A WASIELEWSKI, MR GAINES, GL ONEIL, MP SVEC, WA NIEMCZYK, MP AF ANGERHOFER, A WASIELEWSKI, MR GAINES, GL ONEIL, MP SVEC, WA NIEMCZYK, MP TI FOURIER-TRANSFORM EPR ON MODEL SYSTEMS OF THE PRIMARY CHARGE SEPARATION IN PHOTOSYNTHESIS SO ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS LA English DT Article DE FOURIER-TRANSFORM EPR; CIDEP; ELECTRON TRANSFER; MODEL SYSTEM ID ELECTRON-SPIN POLARIZATION; RADICAL PAIRS AB Fourier-Transform EPR was used to investigate the time evolution of spin polarization (CIDEP) in a synthetic electron transfer model system which exhibits polarization similar to the photosynthetic plant photosystem I and bacterial reaction centers. An oscillatory behaviour of the CIDEP was observed at early times and discussed in terms of quantum beats in the coupled radical pair which forms in the molecular triad. C1 ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP ANGERHOFER, A (reprint author), UNIV STUTTGART,INST PHYS 3,PFAFFENWALDRING 57,W-7000 STUTTGART 80,GERMANY. RI Angerhofer, Alexander/E-3143-2010 OI Angerhofer, Alexander/0000-0002-8580-6024 NR 14 TC 8 Z9 8 U1 0 U2 2 PU R OLDENBOURG VERLAG PI MUNICH 80 PA ROSENHEIMER STR 145 POSTFACH 801360, W-8000 MUNICH 80, GERMANY SN 0942-9352 J9 Z PHYS CHEM JI Z. Phys. Chemie-Int. J. Res. Phys. Chem. Chem. Phys. PY 1991 VL 172 BP 17 EP 30 PN 1 PG 14 WC Chemistry, Physical SC Chemistry GA GV315 UT WOS:A1991GV31500003 ER PT J AU LOVICH, JE LAEMMERZAHL, AF ERNST, CH MCBREEN, JF AF LOVICH, JE LAEMMERZAHL, AF ERNST, CH MCBREEN, JF TI RELATIONSHIPS AMONG TURTLES OF THE GENUS CLEMMYS (REPTILIA, TESTUDINES, EMYDIDAE) AS SUGGESTED BY PLASTRON SCUTE MORPHOLOGY SO ZOOLOGICA SCRIPTA LA English DT Article AB The conservative morphology of hardshelled turtles has fostered the use of size relationships between epidermal scutes (scales) on the shell to differentiate between species and subspecies of many taxa. The size relationships of the six major pairs of plastral scutes were used to compare the four currently recognized species of the genus Clemmys with each other, as well as with the distantly related Graptemys barbouri using Jaccard Coefficients. Shannon-Weiner diversity, indices. and multivariate analysis, Results were concordant among the three techniques used and confirm our prediction that plastral morphology varies little among closely related species and widely among distantly related taxa. Clemmys muhlenbergii appears to be more different from Clemmys guttata than previously suggested. Analysis of plastral morphology shows promise as a taxonomic tool for turtle systematists. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. GEORGE MASON UNIV,DEPT BIOL,FAIRFAX,VA 22030. OI Lovich, Jeffrey/0000-0002-7789-2831 NR 26 TC 12 Z9 12 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0300-3256 J9 ZOOL SCR JI Zool. Scr. PY 1991 VL 20 IS 4 BP 425 EP 429 DI 10.1111/j.1463-6409.1991.tb00306.x PG 5 WC Evolutionary Biology; Zoology SC Evolutionary Biology; Zoology GA GZ747 UT WOS:A1991GZ74700012 ER PT J AU COLGATE, SA AF COLGATE, SA TI THE HOT BUBBLE AND SUPERNOVA CALCULATIONS SO ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article ID RAYLEIGH-TAYLOR INSTABILITY; TURBULENT RP COLGATE, SA (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. NR 12 TC 0 Z9 0 U1 1 U2 1 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 USA SN 0077-8923 J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PD DEC 31 PY 1990 VL 617 BP 1 EP 7 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FM049 UT WOS:A1990FM04900001 ER PT J AU COX, AN AF COX, AN TI PULSATIONS OF DELTA SCUTI STARS SO ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article ID VARIABLE-4 CANUM-VENATICORUM; PERIOD RATIO DISCREPANCIES; ENHANCED METAL OPACITY; MULTIPLE FREQUENCIES; STELLAR CONSEQUENCES; ATTRACTIVE SOLUTION; VZ CANCRI RP COX, AN (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 USA SN 0077-8923 J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PD DEC 31 PY 1990 VL 617 BP 54 EP 72 PG 19 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FM049 UT WOS:A1990FM04900005 ER PT J AU LATTANZIO, JC AF LATTANZIO, JC TI HYDRODYNAMICAL SIMULATIONS OF COLLISIONS BETWEEN INTERSTELLAR CLOUDS SO ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article ID H I CLOUDS; STAR FORMATION; FRAGMENTATION; MODEL RP LATTANZIO, JC (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB, INST GEOPHYS & PLANETARY PHYS, LIVERMORE, CA 94550 USA. NR 23 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 USA SN 0077-8923 J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PD DEC 31 PY 1990 VL 617 BP 158 EP 177 PG 20 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FM049 UT WOS:A1990FM04900013 ER PT J AU BASINGER, SA HULL, JR MULCAHY, TM AF BASINGER, SA HULL, JR MULCAHY, TM TI AMPLITUDE DEPENDENCE OF MAGNETIC STIFFNESS IN BULK HIGH-TEMPERATURE SUPERCONDUCTORS SO APPLIED PHYSICS LETTERS LA English DT Article ID CERAMICS; FORCES AB Magnetic stiffness has been measured in several vibratory systems composed of a permanent magnet elastically suspended above a stationary high-temperature superconductor at 77 K. For Y-Ba-Cu-O, Ag/Y-Ba-Cu-O, (Pb-Bi)-Sr-Ca-Cu-O, and Tl-Ba-Ca-Cu-O sintered disks, both the vertical and horizontal magnetic stiffnesses increase strongly as the magnet's oscillation decays, down to amplitudes of 1-mu-m. Vertical stiffness is about twice as strong as horizontal stiffness, and both are much stronger than the gradient of the levitation force for large monotonic changes in magnet height over the superconductor. These results are not deducible from contemporary magnetization measurements, and elastic pinning of flux lines are believed to contribute significantly to the stiffness. RP BASINGER, SA (reprint author), ARGONNE NATL LAB,DIV MAT & CPDS TECHNOL,ARGONNE,IL 60439, USA. NR 18 TC 37 Z9 37 U1 3 U2 8 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 DEC 31 PY 1990 VL 57 IS 27 BP 2942 EP 2944 DI 10.1063/1.104205 PG 3 WC Physics, Applied SC Physics GA EQ504 UT WOS:A1990EQ50400025 ER PT J AU FRAZER, NB GIBBONS, JW OWENS, TJ AF FRAZER, NB GIBBONS, JW OWENS, TJ TI TURTLE TRAPPING - PRELIMINARY TESTS OF CONVENTIONAL WISDOM SO COPEIA LA English DT Note C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. RP FRAZER, NB (reprint author), MERCER UNIV,COLL LIBERAL ARTS,DEPT BIOL,MACON,GA 31207, USA. NR 10 TC 20 Z9 26 U1 0 U2 3 PU AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS BUSINESS OFFICE PI CARBONDALE PA SOUTHERN ILLINOIS UNIV, DEPT ZOOLOGY, CARBONDALE, IL 62901-6501 SN 0045-8511 J9 COPEIA JI Copeia PD DEC 31 PY 1990 IS 4 BP 1150 EP 1152 DI 10.2307/1446501 PG 3 WC Zoology SC Zoology GA ET225 UT WOS:A1990ET22500025 ER PT J AU CONZEMIUS, RJ SVEC, HJ AF CONZEMIUS, RJ SVEC, HJ TI A NEW CONCEPT FOR CHARACTERIZING PEPTIDES AND PROTEINS USING A MODIFIED MASS-SPECTROMETRIC APPROACH SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES LA English DT Article ID FAST ATOM BOMBARDMENT; ION AB A new concept of mass spectrometry is described in which individual ions are characterized with respect to mass and structure. The concept allows flexibility in ion source design by removing the need for high ion currents. It greatly simplifies the required ion optical scheme by removing the need for magnetic or r.f. fields. No pulsed excitation for pulsed voltages is required. Time-of-flight measurements are made but without requiring knowledge or use of the time of ion creation. The technique provides MS-MS type information, promises high mass resolution, and very high absolute sensitivity. Instrumentation based upon this concept should be ideally suited to the high sensitivity detection and sequencing of peptides and proteins. C1 IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. NR 20 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1176 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. Ion Process. PD DEC 31 PY 1990 VL 103 IS 1 BP 57 EP 66 DI 10.1016/0168-1176(90)80016-V PG 10 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA EU432 UT WOS:A1990EU43200006 ER PT J AU TEICH, MC TANABE, T MARSHALL, TC GALAYDA, J AF TEICH, MC TANABE, T MARSHALL, TC GALAYDA, J TI STATISTICAL PROPERTIES OF WIGGLER AND BENDING-MAGNET RADIATION FROM THE BROOKHAVEN VACUUM-ULTRAVIOLET ELECTRON STORAGE RING SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHOTON STATISTICS; LASER; NOISE; SHOT; COHERENCE AB The photoelectron counts of spontaneous light from the wiggler in the Brookhaven electron storage ring obey the negative-binomial distribution, in accord with the predictions of a multielectron, multimode theory. The bending-magnet light emerging from the Pyrex exit port of the storage ring obeys the Neyman type-A distribution. C1 COLUMBIA UNIV,DEPT APPL PHYS,NEW YORK,NY 10027. BROOKHAVEN NATL LAB,UPTON,NY 11973. RP TEICH, MC (reprint author), COLUMBIA UNIV,FACHBEREICH ELECT ENGN,COLUMBIA RADIAT LAB,NEW YORK,NY 10027, USA. NR 15 TC 13 Z9 13 U1 1 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 DEC 31 PY 1990 VL 65 IS 27 BP 3393 EP 3396 DI 10.1103/PhysRevLett.65.3393 PG 4 WC Physics, Multidisciplinary SC Physics GA EQ338 UT WOS:A1990EQ33800009 ER PT J AU RICHTER, M WOICIK, JC NOGAMI, J PIANETTA, P MIYANO, KE BASKI, AA KENDELEWICZ, T BOULDIN, CE SPICER, WE QUATE, CF LINDAU, I AF RICHTER, M WOICIK, JC NOGAMI, J PIANETTA, P MIYANO, KE BASKI, AA KENDELEWICZ, T BOULDIN, CE SPICER, WE QUATE, CF LINDAU, I TI SURFACE EXTENDED-X-RAY-ABSORPTION FINE-STRUCTURE AND SCANNING TUNNELING MICROSCOPY OF SI(001)2X1-SB SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHOTOEMISSION; SI(100); SB AB Surface extended-x-ray-absorption fine structure (SEXAFS) has been combined with scanning tunneling microscopy (STM) to determine both the local and long-range bonding properties of the Si(001)2 x 1-Sb interface. Sb L3 edge SEXAFS shows that Sb dimers occupy a modified bridge site on the Si(001) surface with a Sb-Sb near-neighbor distance of 2.88 +/- 0.03 angstrom. Each Sb atom of the dimer is bonded to two Si atoms with a Sb-Si bond length of 2.63 +/- 0.04 angstrom. STM resolves the dimer structure and provides the long-range periodicity of the surface. Low-energy-electron diffraction of vicinal Si(001) shows that the Sb dimer chains run perpendicular to the original Si dimer chains. C1 NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. EDWARD L GINZTON LAB,STANFORD,CA 94305. STANFORD UNIV,STANFORD ELECTR LABS,STANFORD,CA 94305. RP RICHTER, M (reprint author), STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94309, USA. NR 14 TC 138 Z9 139 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 31 PY 1990 VL 65 IS 27 BP 3417 EP 3420 DI 10.1103/PhysRevLett.65.3417 PG 4 WC Physics, Multidisciplinary SC Physics GA EQ338 UT WOS:A1990EQ33800015 ER PT J AU BIGOT, JY PORTELLA, MT SCHOENLEIN, RW CUNNINGHAM, JE SHANK, CV AF BIGOT, JY PORTELLA, MT SCHOENLEIN, RW CUNNINGHAM, JE SHANK, CV TI RESONANT INTERVALLEY SCATTERING IN GAAS SO PHYSICAL REVIEW LETTERS LA English DT Article ID GALLIUM-ARSENIDE; DYNAMICS; LUMINESCENCE; CARRIERS AB The dynamics of intervalley scattering of electrons is investigated in GaAs with 6-fs optical pulses at room temperature. We report the observation of a "resonant coupling" between T and X conduction bands. This effect slows the apparent rate of scattering of carriers in the T valley at energies near the minimum of the X valley. RP BIGOT, JY (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,ONE CYCLOTRON RD,MS 70-110A,BERKELEY,CA 94720, USA. RI Schoenlein, Robert/D-1301-2014 OI Schoenlein, Robert/0000-0002-6066-7566 NR 15 TC 27 Z9 27 U1 2 U2 8 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 31 PY 1990 VL 65 IS 27 BP 3429 EP 3432 DI 10.1103/PhysRevLett.65.3429 PG 4 WC Physics, Multidisciplinary SC Physics GA EQ338 UT WOS:A1990EQ33800018 ER PT J AU KWEI, GH PARTIN, DE AF KWEI, GH PARTIN, DE TI STRONTIUM-INDUCED OXYGEN DEFECT STRUCTURE AND HOLE DOPING IN LA2-XSRXCUO4 - COMMENT SO PHYSICAL REVIEW LETTERS LA English DT Letter RP KWEI, GH (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87454, USA. NR 5 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 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 31 PY 1990 VL 65 IS 27 BP 3456 EP 3456 DI 10.1103/PhysRevLett.65.3456 PG 1 WC Physics, Multidisciplinary SC Physics GA EQ338 UT WOS:A1990EQ33800025 ER PT J AU DUONGVAN, M AF DUONGVAN, M TI THE PHYSICS OF THE LOGISTIC MAP IN THE CONTINUOUS-TIME LIMIT SO PHYSICS LETTERS A LA English DT Article AB We propose an equation of Brownian motion with intrinsic fluctuations that manifests both a 1/closed-integral power spectrum and white-noise stochasticity. The solution x(t) of this equation, when evaluated at multiples of the time interval DELTA-t = tau, where 1/tau is the diffusion constant, generates the random sequences x(n) of the logistic map x(n-1) = lambda-x(n)(1-x(n) for lambda = 4. The corresponding power spectrum is consistent with a white-noise power spectrum. When time is treated as continuous, the power spectrum of x(t) is asymptotically 1/closed-integral. This equation correctly represents frequency-dependent ionic conductivities without requiring a random forcing function. RP DUONGVAN, M (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,LIVERMORE,CA 94550, USA. NR 11 TC 0 Z9 0 U1 0 U2 1 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 DEC 31 PY 1990 VL 151 IS 9 BP 493 EP 499 DI 10.1016/0375-9601(90)90467-3 PG 7 WC Physics, Multidisciplinary SC Physics GA EU841 UT WOS:A1990EU84100008 ER PT J AU HILL, CT AF HILL, CT TI MINIMAL DYNAMIC SYMMETRY-BREAKING OF THE ELECTROWEAK INTERACTIONS AND MTOP SO MODERN PHYSICS LETTERS A LA English DT Note AB We review the recent idea of a mechanism for dynamically breaking the symmetries of the electroweak interactions which relies upon the formation of condensates involving the conventional quarks and leptons, such as the top quark. In particular, such a scheme would indicate that the top quark is heavy, greater than or of order 200 GeV, and gives further predictions for the Higgs boson mass. It may be extended to a fourth generation with new strong TeV scale flavor-interactions. RP HILL, CT (reprint author), FERMI NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0217-7323 J9 MOD PHYS LETT A JI Mod. Phys. Lett. A PD DEC 30 PY 1990 VL 5 IS 32 BP 2675 EP 2682 DI 10.1142/S0217732390003127 PG 8 WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical SC Physics GA EQ868 UT WOS:A1990EQ86800001 ER PT J AU LOO, JA EDMONDS, CG UDSETH, HR SMITH, RD AF LOO, JA EDMONDS, CG UDSETH, HR SMITH, RD TI COLLISIONAL ACTIVATION AND DISSOCIATION OF LARGE MULTIPLY CHARGED PROTEINS PRODUCED BY ELECTROSPRAY IONIZATION SO ANALYTICA CHIMICA ACTA LA English DT Article; Proceedings Paper CT 2ND INTERNATIONAL SYMP ON APPLIED MASS SPECTROMETRY IN THE HEALTH SCIENCES CY APR 17-20, 1990 CL BARCELONA, SPAIN SP ASTRA, APPL BIOSYST, BOEHRINGER MANNHEIM, COMISSIO INTERDEPT RECERCA & INNOVAC TECHNOL, CONSEJO SUPER INVESTIGAC CIEN, CONSELLERIA ENSENYAMENT GENERALITAT CATALUNYA, FINNIGAN MAT, FONDO INVESTIGAC SANITARIA, REAL SOC ESPANOLA QUIMICA, GRP CROMATOG & TECN AFINES, HEWLETT PACKARD DE PROTEINS ID TANDEM MASS-SPECTROMETRY; FAST ATOM BOMBARDMENT; INDUCED DECOMPOSITION; IONS; PEPTIDE; DESORPTION; PHOTODISSOCIATION; SPECTRA AB Electrospray ionization is capable of producing multiply charged ions of large biopolymers having molecular weights in excess of 100 kDa. Primary structural information can be obtained from highly charged molecular ions by collisionally activated dissociation (CAD) in the atmospheric pressure/vacuum interface of the quadrupole mass spectrometer. Ions are sampled from atmospheric pressure through a 1-mm nozzle orifice to a 2-mm opening skimmer in front of a radiofrequency-only quadrupole. The pressure in the nozzle-skimmer region is typically almost-equal-to 2 Torr. With the potential between the nozzle and skimmer elements (DELTA-N-S) approximately + 185 V, ions due only to intact molecular species are typically observed. Increasing DELTA-N-S allows for crude control of the collision energy in this region since collision energy depends on the charge state. At DELTA-N-S > + 300 V, most of the multiply charged molecular ions are dissociated, producing singly and multiply charged product ions. For example, at a DELTA-N-S value of + 335 V, molecular ions from bovine, human, and rat serum albumin almost-equal-to 580 amino acid residues, M(r) almost-equal-to 66 kDa) are efficiently dissociated to yield distinct product ion mass spectra. Series of 3 +, 4 +, and 5 + "b-type" fragment ions originating from dissociation at amino acid residues almost-equal-to 15-30 from the NH2-terminus of the polypeptide sequence are prominent in the spectra. These results are consistent with other CAD data of smaller proteins showing that fragmentation generally occurs from the ends of the molecule. Extended mass spectrometry (MS)/MS analysis (CAD-MS-CAD-MS or effectively MS-MS-MS) with a triple quadrupole MS apparatus is potentially available for confirmation of product ion assigments and for obtaining sequence information from molecular regions unprobed by the initial CAD step for the intact molecular ion. C1 PACIFIC NW LAB, DEPT CHEM SCI, CHEM METHODS & SEPARAT GRP, RICHLAND, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 NR 33 TC 43 Z9 43 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0003-2670 J9 ANAL CHIM ACTA JI Anal. Chim. Acta PD DEC 28 PY 1990 VL 241 IS 2 BP 167 EP 173 DI 10.1016/S0003-2670(00)83644-2 PG 7 WC Chemistry, Analytical SC Chemistry GA EU533 UT WOS:A1990EU53300002 ER PT J AU POPP, RA SHINPOCK, SG POPP, DM AF POPP, RA SHINPOCK, SG POPP, DM TI IMMUNODEFICIENCY OF BETA-THALASSEMIC MICE SO ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article RP POPP, RA (reprint author), OAK RIDGE NATL LAB, DIV BIOL, OAK RIDGE, TN 37831 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 USA SN 0077-8923 J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PD DEC 28 PY 1990 VL 612 BP 538 EP 539 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA FB934 UT WOS:A1990FB93400074 ER PT J AU BECK, SN MCCULLOUGH, EA FELLER, D AF BECK, SN MCCULLOUGH, EA FELLER, D TI ABINITIO CALCULATIONS OF THE C-13 MAGNETIC HYPERFINE PARAMETERS IN C-2+ USING NUMERICAL AND GAUSSIAN-BASIS SET METHODS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID ATOMS B-F; COUPLING-CONSTANTS; NEON; MATRIX AB Ab initio calculations of the C-13 hyperfine coupling constants in C2+ (4-SIGMA-g-) were performed with extended Gaussian basis sets and the fully numerical, partial-wave multiconfiguration self-consistent field method. The basis set and numerical approaches are shown to yield results in good agreement with each other, as well as with the recent cryogenic neon matrix measurements. Single excitations reduce A(iso) by more than 40% with respect to the Hartree-Fock value, while double and higher excitations are needed to bring about good agreement with experiment. The best CI wavefunction produced values of A(iso) = 91.4 MHz, A(dip) = 2.8 MHz compared with experimental values of A(iso) = 95 +/- 1 MHz and A(dip) = 2 +/- 1 MHz. C1 PACIFIC NW LAB, MOLEC SCI RES CTR, RICHLAND, WA 99352 USA. RP BECK, SN (reprint author), UTAH STATE UNIV, DEPT CHEM & BIOCHEM, 0300, LOGAN, UT 84322 USA. NR 23 TC 10 Z9 10 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 DEC 28 PY 1990 VL 175 IS 6 BP 629 EP 632 DI 10.1016/0009-2614(90)85594-3 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EU562 UT WOS:A1990EU56200017 ER PT J AU CORNILLE, M DUBAU, J BELYDUBAU, F FAUCHER, P IVANOV, IA SAFRONOVA, UI NILSEN, J AF CORNILLE, M DUBAU, J BELYDUBAU, F FAUCHER, P IVANOV, IA SAFRONOVA, UI NILSEN, J TI Z DEPENDENCES OF THE ENERGY-LEVELS AND AUTOIONIZATION RATES FOR 2L3L' STATES OF 2-ELECTRON SYSTEMS SO JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS LA English DT Article ID DIELECTRONIC SATELLITE SPECTRA; COLLISION CROSS-SECTIONS; IONS; EXCITATION AB Three different calculational methods (AUTOLSJ, MZ, MCDF) were used to obtain energy levels and autoionization rates for doubly excited states 2l3l' of two-electron systems (10 less-than-or-equal-to Z less-than-or-equal-to 42). When all the transpositions of the levels are done according to the Wignervon Neuman theorem (non-crossing of the levels with the same total angular momentum J and parity of the system along the Z isoelectronic sequence), it becomes possible to compare energy levels and autoionization rates obtained by the three methods. The Z dependences of the quantities are investigated for each calculational method for 10 less-than-or-equal-to Z less-than-or-equal-to 42. The final comparison reveals rather good agreement between the results obtained by the three methods. C1 ACAD SCI USSR,INST SPECT,TROITSK 142092,USSR. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. OBSERV NICE,OCA,CNRS,URA 1326,F-06300 NICE,FRANCE. RP CORNILLE, M (reprint author), OBSERV PARIS,DAMAP,CNRS,URA 812,F-92195 MEUDON,FRANCE. RI Ivanov, Igor/F-8462-2014; OI Ivanov, Igor/0000-0003-3856-1658 NR 23 TC 16 Z9 16 U1 0 U2 0 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 DEC 28 PY 1990 VL 23 IS 24 BP 4451 EP 4467 DI 10.1088/0953-4075/23/24/007 PG 17 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA ER380 UT WOS:A1990ER38000007 ER PT J AU MCCOWN, AW AF MCCOWN, AW TI PRODUCTION OF RARE-GAS HALIDE EXCIMERS FOLLOWING TRIMER ABSORPTION AT ULTRAVIOLET WAVELENGTHS SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID LASER-INDUCED FLUORESCENCE; CROSS-SECTION MEASUREMENT; ELECTRONIC STATES; 248 NM; PHOTO-DISSOCIATION; B-STATE; C-STATE; KINETICS; MIXTURES; AR2F AB Absorption by the rate gas-halide trimers Kr2F(4(2)GAMMA) and Xe2Cl(4(2)GAMMA) has been shown to result in the immediate formation of the respective excimer, KrF(B,C) or XeCl(B,C), and the branching ratio for this process has been measured at several ultraviolet wavelengths. In experiments using excimer lasers as both pump and probe, the branching ratio for both trimers has been found to be 0.9 +/- 0.1 for wavelengths above 300 nm and approximately zero at wavelengths shorter than 250 nm. These results suggest that the trimers have strongly repulsive potential energy curves that terminate on the excimer levels. This is not predicted by theoretical modeling and demonstrates the need for improvement in the theoretical understanding of the trimers and perhaps even the excimers. RP MCCOWN, AW (reprint author), LOS ALAMOS NATL LAB,LASER SCI & APPLICAT GRP,LOS ALAMOS,NM 87545, USA. NR 45 TC 3 Z9 3 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 DEC 27 PY 1990 VL 94 IS 26 BP 8913 EP 8917 DI 10.1021/j100389a012 PG 5 WC Chemistry, Physical SC Chemistry GA EQ506 UT WOS:A1990EQ50600012 ER PT J AU HARVEY, BG AF HARVEY, BG TI FORMATION OF PROJECTILE FRAGMENTS BY STATISTICAL DECAY IN HIGH-ENERGY HEAVY-ION REACTIONS SO PHYSICS LETTERS B LA English DT Article ID COLLISIONS; EMISSION; NUCLEI AB Cross sections for the removal of 1-4 nucleons from projectiles between C-12 and Fe-56 in collision with a hydrogen target are calculated and compared with experimental values. The calculation assumes that fragments are formed as a result of nucleon-nucleon collisions followed by sequential decay. RP HARVEY, BG (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 12 TC 2 Z9 2 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 DEC 27 PY 1990 VL 252 IS 4 BP 536 EP 539 DI 10.1016/0370-2693(90)90478-O PG 4 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EU500 UT WOS:A1990EU50000002 ER PT J AU BARRETTE, J BELLWIED, R BRAUNMUNZINGER, P CLELAND, WE DAVID, G DUEK, E FATYGA, M FOX, D GREENE, SV HALL, JR HEIFETZ, R HEMMICK, TK HERRMANN, N HOGUE, RW INGOLD, G JAYANANDA, K KRAUS, D LEGAULT, A LISSAUER, D LLOPE, WJ LUDLAM, T MAJKA, RD MAKOWIECKI, D MARK, SK MITCHELL, JT MUTHUSWAMY, M OBRIEN, E OLSEN, L POLYCHRONAKOS, V RAWOOLSULLIVAN, M ROTONDO, FS SANDWEISS, J SHIVAKUMAR, B SIMON, J SLAUGHTER, AJ SONNADARA, U STACHEL, J SULLIVAN, J SUNIER, J TAKAI, H THROWE, T VANHECKE, H WATERS, L WOLF, K WOLFE, D WOODY, C AF BARRETTE, J BELLWIED, R BRAUNMUNZINGER, P CLELAND, WE DAVID, G DUEK, E FATYGA, M FOX, D GREENE, SV HALL, JR HEIFETZ, R HEMMICK, TK HERRMANN, N HOGUE, RW INGOLD, G JAYANANDA, K KRAUS, D LEGAULT, A LISSAUER, D LLOPE, WJ LUDLAM, T MAJKA, RD MAKOWIECKI, D MARK, SK MITCHELL, JT MUTHUSWAMY, M OBRIEN, E OLSEN, L POLYCHRONAKOS, V RAWOOLSULLIVAN, M ROTONDO, FS SANDWEISS, J SHIVAKUMAR, B SIMON, J SLAUGHTER, AJ SONNADARA, U STACHEL, J SULLIVAN, J SUNIER, J TAKAI, H THROWE, T VANHECKE, H WATERS, L WOLF, K WOLFE, D WOODY, C TI SEARCH FOR STRANGE QUARK MATTER IN HIGH-ENERGY HEAVY-ION COLLISIONS SO PHYSICS LETTERS B LA English DT Article ID DROPLETS; SEPARATION AB We have initiated a search for strange quark matter in the products of 14.6 GeV/c per nucleon Si-28 collisions with nuclei, utilizing the apparatus of E-814 at Brookhaven National Laboratory's AGS. We report the first results of this search, which is sensitive to particles with charge-to-mass ratios between 0.1 and 0.3 (GeV/c2)-1 that are produced within approximately +/- 0.5 units of the center of mass rapidity. C1 SUNY STONY BROOK,STONY BROOK,NY 11794. UNIV PITTSBURGH,PITTSBURGH,PA 15260. BROOKHAVEN NATL LAB,UPTON,NY 11973. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. YALE UNIV,NEW HAVEN,CT 06511. UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. TEL AVIV UNIV,IL-69978 TEL AVIV,ISRAEL. TEXAS A&M UNIV SYST,COLLEGE STN,TX 77843. RP BARRETTE, J (reprint author), MCGILL UNIV,MONTREAL H3A 2T8,QUEBEC,CANADA. RI Sonnadara, Upul/E-6359-2010; Takai, Helio/C-3301-2012; OI Takai, Helio/0000-0001-9253-8307; Sonnadara, Upul/0000-0001-7862-2537 NR 10 TC 36 Z9 36 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 DEC 27 PY 1990 VL 252 IS 4 BP 550 EP 554 DI 10.1016/0370-2693(90)90481-K PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EU500 UT WOS:A1990EU50000005 ER PT J AU BAUR, U GLOVER, EWN AF BAUR, U GLOVER, EWN TI TAGGING THE HIGGS BOSON IN PP-]W+W-JJ PROCESSES SO PHYSICS LETTERS B LA English DT Article ID SUPERCOLLIDER ENERGIES AB We compute the exact matrix elements for the tree level O(alpha-w4) process qq-->qqW+W- and the tree level O(alpha-s2-alpha-w2) mixed QCD-electroweak processes, gg-->qqBAR W+W-, etc. and use them to examine the Higgs boson signal in pp-->W+W-jj for the representative case m(H) = 800 GeV. By requiring two "tagging" jets, p(Tj) > 50 GeV and 2.5 < \eta-j\ < 5.0 (4.5) at the SSC (LHC), the W+W-jj backgrounds from the mixed QCD-electroweak process and the non-resonant purely electroweak qq-->qq W+W- process are significantly reduced. We find that the m(WW) distribution of the Higgs boson signal is poorly described by the s-channel Higgs pole approximation. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP BAUR, U (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. RI Glover, Edward/A-4597-2012 OI Glover, Edward/0000-0002-0173-4175 NR 19 TC 44 Z9 44 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 DEC 27 PY 1990 VL 252 IS 4 BP 683 EP 689 DI 10.1016/0370-2693(90)90506-2 PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EU500 UT WOS:A1990EU50000030 ER PT J AU CONDEMINE, G SMITH, CL AF CONDEMINE, G SMITH, CL TI TRANSCRIPTION REGULATES OXOLINIC ACID-INDUCED DNA GYRASE CLEAVAGE AT SPECIFIC SITES ON THE ESCHERICHIA-COLI CHROMOSOME SO NUCLEIC ACIDS RESEARCH LA English DT Article ID ESCHERICHIA-COLI; NUCLEOTIDE-SEQUENCE; PHYSICAL MAP; BACTERIAL CHROMOSOME; PALINDROMIC UNITS; GENE-EXPRESSION; NALIDIXIC-ACID; PLASMID PBR322; INVIVO; PROMOTER AB Prominent DNA gyrase-mediated cleavage sites, induced by oxolinic acid, occur at specific, but infrequent, locations on the Escherichia coli chromosome. These sites, which we call toposites, may represent high affinity DNA gyrase binding sites or may mark chromosomal regions that accumulate superhelical stress. Toposites are usually grouped in 5 to 10 kb clusters that are mostly 50 to 100 kb apart. The total number of clusters on the chormosome is between 50 and 100. The location of sites depends on the local sequence. The extent of DNA gyrase cleavage at toposites can be strongly modulated by transcription occurring at as far as 35 kb away. C1 INST NATL SCI APPL,MICROBIOL LAB,BAT 406,20 AVE ALBERT EINSTEIN,F-69621 VILLEURBANNE,FRANCE. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR HUMAN GENOME,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT MOLEC & CELL BIOL,BERKELEY,CA 94720. FU NIGMS NIH HHS [GM14825] NR 60 TC 33 Z9 33 U1 0 U2 0 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 DEC 25 PY 1990 VL 18 IS 24 BP 7389 EP 7396 DI 10.1093/nar/18.24.7389 PG 8 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA EQ479 UT WOS:A1990EQ47900023 PM 2175434 ER PT J AU LERKE, SA EVANS, DH FELDBERG, SW AF LERKE, SA EVANS, DH FELDBERG, SW TI DIGITAL-SIMULATION OF THE SQUARE SCHEME IN CYCLIC VOLTAMMETRY - A COMPARISON OF METHODS SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Article ID ISOMERIZATION; DIFFUSION; COMPLEXES; SYSTEMS AB The recently proposed fast quasi-explicit finite difference (FQEFD) method was used to simulate the cyclic voltammetric behavior of the square scheme, A + e- half arrow pointing to the left and to the right B, B half arrow pointing to the left and to the right C, C half arrow pointing to the left and to the right D + e-, D half arrow pointing to the left and to the right A, coupled with the homogeneous cross reaction A + C half arrow pointing to the left and to the right B + D. The accuracy of the FQEFD method is confirmed by comparisons with: (1) Finite difference (EFD) simulations (in the narrowly defined kinetic regimes where the EFD method is computationally practical); (2) the heterogeneous equivalent method operating in conjunction with the EFD algorithm (EFDHE) (very efficient, but valid in a limited kinetic regime); (3) known analytic or quasi-analytic solutions. The FQEFD method is shown to produce accurate results over virtually all kinetic domains of interest without the prohibitive increases in computing time associated with EFD methods and without the programming complexities associated with implicit methods. The effect of the cross reaction has also been investigated. For illustrative purposes and to further test the methods, simulations were fit to experimental data for three electrode reactions that follow the square scheme. C1 UNIV DELAWARE, DEPT CHEM & BIOCHEM, NEWARK, DE 19716 USA. BROOKHAVEN NATL LAB, DEPT APPL SCI, DIV CHEM SCI, UPTON, NY 11973 USA. NR 17 TC 46 Z9 46 U1 0 U2 9 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 1572-6657 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD DEC 24 PY 1990 VL 296 IS 2 BP 299 EP 315 DI 10.1016/0022-0728(90)87255-I PG 17 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA ER871 UT WOS:A1990ER87100002 ER PT J AU AZAIEZ, F KELLY, WH KORTEN, W DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM BEAUSANG, CW BECKER, JA HENRY, EA DRAPER, JE BRINKMAN, MJ YATES, SW KUHNERT, A RUBEL, E AF AZAIEZ, F KELLY, WH KORTEN, W DELEPLANQUE, MA STEPHENS, FS DIAMOND, RM BEAUSANG, CW BECKER, JA HENRY, EA DRAPER, JE BRINKMAN, MJ YATES, SW KUHNERT, A RUBEL, E TI SUPERDEFORMED BANDS IN TI-194 SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP AZAIEZ, F (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. RI KORTEN, Wolfram/H-3043-2013 NR 5 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C121 EP C125 DI 10.1016/0375-9474(90)91139-I PG 5 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300012 ER PT J AU BAKTASH, C HALBERT, ML HENSLEY, DC JOHNSON, NR LEE, IY MCCONNELL, JW MCGOWAN, FK AF BAKTASH, C HALBERT, ML HENSLEY, DC JOHNSON, NR LEE, IY MCCONNELL, JW MCGOWAN, FK TI STUDY OF SPIN-TEMPERATURE EFFECTS USING ENERGY-ORDERED CONTINUUM GAMMA-RAY SPECTROSCOPY TECHNIQUE SO NUCLEAR PHYSICS A LA English DT Article ID STRENGTH FUNCTIONS; ROTATING NUCLEI; HOT; BANDS; DECAY AB We have investigated a new continuum gamma-ray spectroscopy technique which is based on the detection of all emitted gamma-rays in a 4-pi detector system, and ordering them according to their energies on an event-by-event basis. The technique allows determination of gamma strength functions, and rotational damping width as a function of spin and temperature. Thus, it opens up the possibility of studying the onset of motional narrowing, order-to-chaos transition, and the mapping of the evolution of nuclear collectivity with spin and temperature. Application of the technique for preferential entry-state population, exit-channel selection, and feeding of the discrete states via selective pathways will be discussed. RP BAKTASH, C (reprint author), OAK RIDGE NATL LAB, DIV PHYS, POB 2008, BLDG 6000, MS 6-371, OAK RIDGE, TN 37831 USA. NR 23 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 DEC 24 PY 1990 VL 520 BP C555 EP C565 DI 10.1016/0375-9474(90)91174-P PG 11 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300047 ER PT J AU BECKER, JA ROY, N HENRY, EA YATES, SW KUHNERT, A DRAPER, JE KORTEN, W BEAUSANG, CW DELEPLANQUE, MA DIAMOND, RM STEPHENS, FS KELLY, WH AZAIEZ, F CIZEWSKI, JA BRINKMAN, MJ AF BECKER, JA ROY, N HENRY, EA YATES, SW KUHNERT, A DRAPER, JE KORTEN, W BEAUSANG, CW DELEPLANQUE, MA DIAMOND, RM STEPHENS, FS KELLY, WH AZAIEZ, F CIZEWSKI, JA BRINKMAN, MJ TI LEVEL SPIN AND MOMENTS OF INERTIA IN SUPERDEFORMED NUCLEI NEAR A = 194 SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV AB Experimental transition energies in the superdeformed (SD) bands near A = 190 are least-squares fit to rotational model formulae in order to extract level spin. the data set includes 16 SD bands, which show no evidence of either irregular behavior near the bottom of the bands or abrupt angular momentum alignment at low hw. The 9 transitions lowest in energy in each band are well described by the formulae. The fitted spin of the final state in the gamma-ray cascade is within +/- 0.1h of an integer or half-odd integer for 13 of the bands. The weight of the evidence suggests that meaningful level spins corresponding to these transitions can be inferred. The moment of inertia at w = 0 is correlated, with J = 88.3(5)h2/MeV and J = 93.4(5)h2/MeV for the strong and weak bands, respectively. C1 UNIV CALIF DAVIS,DAVIS,CA 95616. RUTGERS STATE UNIV,DEPT PHYS,NEW BRUNSWICK,NJ 08903. RP BECKER, JA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,L-280,LIVERMORE,CA 94550, USA. RI KORTEN, Wolfram/H-3043-2013 NR 18 TC 32 Z9 32 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 DEC 24 PY 1990 VL 520 BP C187 EP C194 DI 10.1016/0375-9474(90)91146-I PG 8 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300019 ER PT J AU BERTRAND, FE BEENE, JR AF BERTRAND, FE BEENE, JR TI EXCITATION AND PHOTON DECAY OF GIANT MULTIPOLE RESONANCES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID QUADRUPOLE-RESONANCE; PB-208; ENERGY; COLLISIONS AB A brief review of the excitation of giant multipole resonances via Coulomb excitation is given which emphasizes the very large cross sections that can be realized through this reaction for both isoscalar and isovector resonances. Discussion and results where available, are provided for the measurement of the photon decay of one and two phonon giant resonances. It is pointed out throughout the presentation that the use of E1 photons as a "tag" provides a means to observe weakly excited resonances that cannot be observed in the singles spectra. RP BERTRAND, FE (reprint author), OAK RIDGE NATL LAB,POB 2008,BLDG 6000,MS 6-368,OAK RIDGE,TN 37831, USA. NR 17 TC 8 Z9 8 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C627 EP C639 DI 10.1016/0375-9474(90)91180-Y PG 13 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300053 ER PT J AU CARPENTER, MP YE, D JANSSENS, RVF KHOO, TL AHMAD, I BEARD, KB BENET, P CIZEWSKI, JA DRIGERT, MW FERNANDEZ, P GARG, U MOORE, EF WOLFS, FLH AF CARPENTER, MP YE, D JANSSENS, RVF KHOO, TL AHMAD, I BEARD, KB BENET, P CIZEWSKI, JA DRIGERT, MW FERNANDEZ, P GARG, U MOORE, EF WOLFS, FLH TI EVIDENCE OF TIME-DELAY IN THE DECAY OF THE SUPERDEFORMED BANDS OF HG-191, HG-192 SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV C1 UNIV NOTRE DAME,NOTRE DAME,IN 46556. PURDUE UNIV,W LAFAYETTE,IN 47907. IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903. RP CARPENTER, MP (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 7 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 DEC 24 PY 1990 VL 520 BP C133 EP C137 DI 10.1016/0375-9474(90)91141-D PG 5 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300014 ER PT J AU HENRY, EA BECKER, JA BRINKMAN, MJ KUHNERT, A YATES, SW DELEPLANQUE, MA DIAMOND, RM STEPHENS, FS BEAUSANG, CW KELLY, WH KORTEN, W AZAIEZ, F DRAPER, JE RUBEL, E CIZEWSKI, JA AKOVALI, YA AF HENRY, EA BECKER, JA BRINKMAN, MJ KUHNERT, A YATES, SW DELEPLANQUE, MA DIAMOND, RM STEPHENS, FS BEAUSANG, CW KELLY, WH KORTEN, W AZAIEZ, F DRAPER, JE RUBEL, E CIZEWSKI, JA AKOVALI, YA TI PROPERTIES OF SUPERDEFORMED BANDS IN THE A = 194 REGION SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID HIGH-SPIN C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. RUTGERS STATE UNIV,NEW BRUNSWICK,NJ 08903. UNIV CALIF DAVIS,DAVIS,CA 95616. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. RP HENRY, EA (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,L-234,LIVERMORE,CA 94550, USA. RI KORTEN, Wolfram/H-3043-2013 NR 18 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 DEC 24 PY 1990 VL 520 BP C115 EP C120 DI 10.1016/0375-9474(90)91138-H PG 6 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300011 ER PT J AU JANSSENS, RVF CARPENTER, MP DRIGERT, MW FERNANDEZ, PB MOORE, EF YE, D AHMAD, I BEARD, KB BEARDEN, IG BENET, P DALY, PJ GARG, U GRABOWSKI, ZW KHOO, TL REVIOL, W WOLFS, FLH AF JANSSENS, RVF CARPENTER, MP DRIGERT, MW FERNANDEZ, PB MOORE, EF YE, D AHMAD, I BEARD, KB BEARDEN, IG BENET, P DALY, PJ GARG, U GRABOWSKI, ZW KHOO, TL REVIOL, W WOLFS, FLH TI SUPERDEFORMATION IN THE MERCURY NUCLEI SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID HIGH-SPIN; ANGULAR-MOMENTUM; BANDS; EXCITATIONS; REGION; STATES C1 IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415. PURDUE UNIV,W LAFAYETTE,IN 47907. UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556. RP JANSSENS, RVF (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 30 TC 19 Z9 19 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C75 EP C89 DI 10.1016/0375-9474(90)91135-E PG 15 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300008 ER PT J AU KHOO, TL JANSSENS, RVF MOORE, EF BEARD, KB BENET, P AHMAD, I CARPENTER, MP CHASMAN, RR DALY, PJ DRIGERT, MW GARG, U GRABOWSKI, ZW WOLFS, FLH YE, D AF KHOO, TL JANSSENS, RVF MOORE, EF BEARD, KB BENET, P AHMAD, I CARPENTER, MP CHASMAN, RR DALY, PJ DRIGERT, MW GARG, U GRABOWSKI, ZW WOLFS, FLH YE, D TI POPULATION OF SUPERDEFORMED BANDS, THE COMPETITION WITH FISSION, AND THE BARRIER BETWEEN NORMAL AND SUPERDEFORMED STATES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID FUSION; DY-152; LINE; SPIN C1 UNIV NOTRE DAME,NOTRE DAME,IN 46556. PURDUE UNIV,W LAFAYETTE,IN 47907. IDAHO NATL ENGN LAB,IDAHO FALLS,ID. RP KHOO, TL (reprint author), ARGONNE NATL LAB,DIV PHYS,9700 S CASS AVE,ARGONNE,IL 60439, USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 15 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C169 EP C177 DI 10.1016/0375-9474(90)91144-G PG 9 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300017 ER PT J AU LEE, IY AF LEE, IY TI THE GAMMASPHERE SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID SUPERDEFORMED BAND; STATES; REGION AB GAMMASPHERE is one of a new generation of gamma ray detector arrays. It consists of 110 Compton-supressed large volume Ge detectors. The design goal is to achieve high efficiency and peak-to-total value for four to five fold coincidence experiments. Such high-fold coincidence capability will provide new physics opportunities in areas such as high spins, transfer reactions, giant resonances, and astrophysics. The design of the detector and shield has been developed through extensive simulation calculations and an "electronic honeycomb" design was chosen. The electronics and computer systems are capable of operating at 50,000 event/sec. The design and development tasks are being carried out at several laboratories in the U.S. The project is expected to be funded in the fall of 1990. The first experiment is planned in the summer of 1992. RP LEE, IY (reprint author), OAK RIDGE NATL LAB,POB 2008,BLDG 6000,MS 6-371,OAK RIDGE,TN 37831, USA. NR 10 TC 468 Z9 469 U1 1 U2 7 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 DEC 24 PY 1990 VL 520 BP C641 EP C655 DI 10.1016/0375-9474(90)91181-P PG 15 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300054 ER PT J AU MOLLER, P NIX, JR AF MOLLER, P NIX, JR TI GLOBAL-NUCLEAR STRUCTURE CALCULATIONS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID MODEL AB The revival of interest in nuclear ground-state octupole deformations that occurred in the 1980's was stimulated by observations in 1980 of particularly large deviations between calculated and experimental masses in the Ra region, in a global calculation of nuclear ground-state masses. By minimizing the total potential energy with respect to octupole shape degrees of freedom in addition to epsilon-2 and epsilon-4 used originally, a vastly improved agreement between calculated and experimental masses was obtained. To study the global behaviour and interrelationships between other nuclear properties, we calculate nuclear ground-state masses, spins, pairing gaps and beta-decay half-lives and compare the results to experimental quantities. The calculations are based on the macroscopic-microscopic approach, with the microscopic contributions calculated in a folded-Yukawa single-particle potential. RP MOLLER, P (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 14 TC 10 Z9 10 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C369 EP C376 DI 10.1016/0375-9474(90)91161-J PG 8 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300034 ER PT J AU NICOLIS, NG SARANTITES, DG BAKTASH, C ABENANTE, V ADLER, LA BEENE, JR DILMANIAN, FA GARCIABERMUDEZ, G GRIFFIN, HC HALBERT, ML HENSLEY, DC JOHNSON, NR LEE, IY MAJKA, Z MCGOWAN, FK RILEY, MA SEMKOW, TM STRACENER, DW VIRTANEN, A AF NICOLIS, NG SARANTITES, DG BAKTASH, C ABENANTE, V ADLER, LA BEENE, JR DILMANIAN, FA GARCIABERMUDEZ, G GRIFFIN, HC HALBERT, ML HENSLEY, DC JOHNSON, NR LEE, IY MAJKA, Z MCGOWAN, FK RILEY, MA SEMKOW, TM STRACENER, DW VIRTANEN, A TI ALPHA-PARTICLE EMISSION AS A PROBE OF NUCLEAR SHAPES AND STRUCTURE EFFECTS IN PROTON EVAPORATION SPECTRA SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID UNEXPECTED LARGE DEFORMATIONS; 120 MEV SI-30+SI-30; HEAVY-ION REACTIONS; SPIN SPECTROMETER; BARRIERS AB Emission barriers and subbarrier anisotropies from alpha-decay of Sn* and Yb* compound nuclei are examined in the light of calculations incorporating deformation effects in the decay process. For the Yb* systems deformation which increases with spin is necessary to explain the data. For the Sn* systems the spectral shapes and anisotropies can be explained without deformation. For systems lighter than Sn this probe is not sensitive to the deformation. Energy spectra and angular correlations of evaporated protons from the Cr-52(S-34, 2n2p)Sr-82 reaction were measured in coincidence with discrete transitions. Large shifts in proton spectra were observed when high spin states in different rotational bands are populated. They are interpreted as due to near-yrast stretched proton emission preferentially populating the yrast band by subbarrier protons. Simulations show that channel selected proton spectra cannot be used as probes of deformation. C1 OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831. UNIV MICHIGAN,DEPT CHEM,ANN ARBOR,MI 48109. RP NICOLIS, NG (reprint author), WASHINGTON UNIV,DEPT CHEM,ST LOUIS,MO 63130, USA. NR 32 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C153 EP C168 DI 10.1016/0375-9474(90)91143-F PG 16 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300016 ER PT J AU NITSCHKE, JM AF NITSCHKE, JM TI FUTURE PHYSICS WITH A PROPOSED RADIOACTIVE BEAM FACILITY IN THE UNITED-STATES SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID NUCLEI AB A brief overview of the physics at a proposed radioactive beam facility or ISOSPIN LABORATORY is presented. Its impact on future directions in nuclear structure, nuclei far from stability, reaction physics, nuclear astrophysics, and several applied fields is pointed out. Of particular interest are neutron rich beams. Radioactive beams with energies on the order of approximately 10 MeV/nucleon or less are emphasized rather than the more energetic beams obtainable through projectile fragmentation. A concept of a high-intensity radioactive beam facility based on the post-acceleration of radioactive ions from an isotope-separator linked to a high-current, high-energy, light ion accelerator is discussed. RP NITSCHKE, JM (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C699 EP C709 DI 10.1016/0375-9474(90)91186-U PG 11 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300059 ER PT J AU WU, CL AF WU, CL TI FINITE PARTICLE NUMBER EFFECT IN HIGH-SPIN B(E2)S SO NUCLEAR PHYSICS A LA English DT Article ID FERMION DYNAMICAL SYMMETRY; INTERACTING BOSON MODEL; BAND TERMINATION; NUCLEI; STATES; COLLECTIVITY; LIFETIMES; YB-160; LINE; MONOPOLE AB The high spin B(E2)'s of deformed nuclei are discussed using the Fermion Dynamical Symmetry Model (FDSM). It can be shown that the loss of E2 collectivity and band termination are mainly due to a finite particle number effect in the collective subspace. C1 UNIV TENNESSEE, DEPT PHYS & ASTRON, KNOXVILLE, TN 37996 USA. DREXEL UNIV, DEPT PHYS, PHILADELPHIA, PA 19104 USA. OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE, TN 37831 USA. NR 43 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 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP C459 EP C475 DI 10.1016/0375-9474(90)91168-Q PG 17 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300041 ER PT J AU ZHANG, JY GARRETT, JD CASTEN, RF BRENNER, DS WESSELBORG, C YU, CH CARPENTER, M AF ZHANG, JY GARRETT, JD CASTEN, RF BRENNER, DS WESSELBORG, C YU, CH CARPENTER, M TI EMPIRICAL ESTIMATES OF THE PROTON-NEUTRON INTERACTION AND DIABOLICAL POINTS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT CONF ON NUCLEAR STRUCTURE IN THE NINETIES CY APR 23-27, 1990 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, JOINT INST HEAVY ION RES, OAK RIDGE ASSOC UNIV ID GAUGE SPACE; ROTATING NUCLEI; INTRUDER STATES; PHASE AB The use of constant-N contours in the (omega, lambda) plane is demonstrated both for establishing diabolical points and for studying regularities and fluctuations in the spectrum of single-particle states. Likewise the average properties and fluctuations of empirical proton-neutron interactions, obtained from double differentials of the total energy with respect to N and Z, are discussed for the ground states of all even-even nuclei with N > 40 and as a function of the rotational frequency for the lowest even-spin, positive-parity decay sequence of deformed rare earth nuclei. C1 CHINESE CTR ASTROPHYS & SCI TECHNOL,WORLD LAB,CTR THEORET PHYS,BEIJING,PEOPLES R CHINA. JOINT INST HEAVY ION RES,OAK RIDGE,TN 37831. INST MODERN PHYS,LANZHOU 73000,PEOPLES R CHINA. OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. CLARK UNIV,WORCESTER,MA 01610. UNIV GIESSEN,W-6300 GIESSEN,GERMANY. BROOKHAVEN NATL LAB,UPTON,NY 11973. ARGONNE NATL LAB,ARGONNE,IL 60439. RP ZHANG, JY (reprint author), UNIV TENNESSEE,DEPT PHYS,KNOXVILLE,TN 37996, USA. RI Carpenter, Michael/E-4287-2015 OI Carpenter, Michael/0000-0002-3237-5734 NR 27 TC 1 Z9 1 U1 0 U2 4 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 DEC 24 PY 1990 VL 520 BP C251 EP C258 DI 10.1016/0375-9474(90)91151-G PG 8 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300024 ER PT J AU JOHNSON, NR AF JOHNSON, NR TI NUCLEAR-STRUCTURE IN THE NINETIES - PREFACE SO NUCLEAR PHYSICS A LA English DT Editorial Material RP JOHNSON, NR (reprint author), OAK RIDGE NATL LAB,POB 2008,BLD 6000,MS-371,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 24 PY 1990 VL 520 BP R9 EP R10 PG 2 WC Physics, Nuclear SC Physics GA EP613 UT WOS:A1990EP61300001 ER PT J AU BAUR, U GLOVER, EWN AF BAUR, U GLOVER, EWN TI Z-BOSON PAIR PRODUCTION VIA VECTOR BOSON SCATTERING AND THE SEARCH FOR THE HIGGS BOSON AT HADRON SUPERCOLLIDERS SO NUCLEAR PHYSICS B LA English DT Article C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP BAUR, U (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. RI Glover, Edward/A-4597-2012 OI Glover, Edward/0000-0002-0173-4175 NR 62 TC 42 Z9 42 U1 0 U2 1 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 DEC 24 PY 1990 VL 347 IS 1-2 BP 12 EP 66 DI 10.1016/0550-3213(90)90550-W PG 55 WC Physics, Particles & Fields SC Physics GA EJ587 UT WOS:A1990EJ58700002 ER PT J AU PORRATI, M AF PORRATI, M TI DISPERSION-RELATIONS AND FINITE-SIZE EFFECTS IN HIGH-ENERGY ELECTROWEAK INTERACTIONS SO NUCLEAR PHYSICS B LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT PHYS,BERKELEY,CA 94720. RP PORRATI, M (reprint author), IST NAZL FIS NUCL,PISA,ITALY. NR 25 TC 61 Z9 61 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 DEC 24 PY 1990 VL 347 IS 1-2 BP 371 EP 393 DI 10.1016/0550-3213(90)90564-T PG 23 WC Physics, Particles & Fields SC Physics GA EJ587 UT WOS:A1990EJ58700016 ER PT J AU GROSSMAN, B AF GROSSMAN, B TI HIERARCHY OF SOLITON-SOLUTIONS TO THE GAUGED NONLINEAR SCHRODINGER-EQUATION ON THE PLANE SO PHYSICAL REVIEW LETTERS LA English DT Article ID QUANTUM-FIELD THEORY; SYMMETRIES; GRAVITY; SYSTEMS AB We find static, self-dual solutions to the SU(N) gauged, nonlinear Schrodinger equation in two spatial dimensions with scalar matter in the adjoint representation. The gauge field is determined dynamically by the Chern-Simons interaction with nonrelativistic scalar matter. The hierarchy is associated with the Toda hierarchy, which can be solved explicitly. The N = 2 case reduces to the Liouville equation found by Jackiw and Pi when looking at the nonlinear Schrodinger equation gauged by U(1). C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP GROSSMAN, B (reprint author), INST ADV STUDY,SCH NAT SCI,PRINCETON,NJ 08540, USA. NR 23 TC 27 Z9 27 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 DEC 24 PY 1990 VL 65 IS 26 BP 3230 EP 3232 DI 10.1103/PhysRevLett.65.3230 PG 3 WC Physics, Multidisciplinary SC Physics GA EP045 UT WOS:A1990EP04500006 ER PT J AU FREESE, K FRIEMAN, JA OLINTO, AV AF FREESE, K FRIEMAN, JA OLINTO, AV TI NATURAL INFLATION WITH PSEUDO NAMBU-GOLDSTONE BOSONS SO PHYSICAL REVIEW LETTERS LA English DT Article ID INVISIBLE AXION; SUPERSTRING MODELS; UNIVERSE SCENARIO; HARMLESS AXION; COSMOLOGY; PERTURBATIONS; INVARIANCE; INSTANTONS; FLATNESS; HORIZON AB We show that a pseudo Nambu-Goldstone boson, with a potential of the form V(phi) = LAMBDA-4[1 +/- cos(phi/f)], can naturally give rise to an epoch of inflation in the early Universe. Successful inflation can be achieved if f approximately m(pl) and LAMBDA approximately m(GUT). Such mass scales arise in particle-physics models with a gauge group that becomes strongly interacting at a scale approximately LAMBDA, e.g., as can happen in superstring theories. The density fluctuation spectrum is non-scale-invariant, with extra power on large length scales. C1 FERMI NATL ACCELERATOR LAB, NASA, FERMILAB ASTROPHYS CTR, BATAVIA, IL 60510 USA. RP MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA. NR 46 TC 601 Z9 601 U1 0 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 DEC 24 PY 1990 VL 65 IS 26 BP 3233 EP 3236 DI 10.1103/PhysRevLett.65.3233 PG 4 WC Physics, Multidisciplinary SC Physics GA EP045 UT WOS:A1990EP04500007 ER PT J AU CRABB, DG KAUFMAN, WA KRISCH, AD LIN, AMT PEASLEE, DC PHELPS, RA RAYMOND, RS ROSER, T STEWART, JA VANGUILDER, BS VUARIDEL, B WONG, VK BROWN, KA RATNER, LG GLASS, G MILLER, CA VETTERLI, M KHIARI, FZ AF CRABB, DG KAUFMAN, WA KRISCH, AD LIN, AMT PEASLEE, DC PHELPS, RA RAYMOND, RS ROSER, T STEWART, JA VANGUILDER, BS VUARIDEL, B WONG, VK BROWN, KA RATNER, LG GLASS, G MILLER, CA VETTERLI, M KHIARI, FZ TI HIGH-PRECISION MEASUREMENT OF THE ANALYZING POWER IN LARGE-P-PERPENDICULAR-TO-2 SPIN-POLARIZED 24-GEV/C PROTON-PROTON ELASTIC-SCATTERING SO PHYSICAL REVIEW LETTERS LA English DT Article ID EXCLUSIVE HADRON SCATTERING; NUCLEON-NUCLEON-SCATTERING; P-P SCATTERING; ENERGY-DEPENDENCE; IMPACT-PICTURE; LARGE ANGLES; GEV/C; P-UP+P-UP->P+P; 90-DEGREES; MECHANISM AB We measured the analyzing power A out to P perpendicular-to 2 = 7.1 (GeV/c)2 with high precision by scattering a 24-GeV/c unpolarized proton beam from the new University of Michigan polarized proton target; the target's 1-W cooling power allowed a beam intensity of more than 2 x 10(11) protons per pulse. This high beam intensity together with the unexpectedly high average target polarization of about 85% allowed unusually accurate measurements of A at large P perpendicular-to 2. These precise data confirmed that the one-spin parameter A is nonzero and indeed quite large at high P perpendicular-to 2; most theoretical models predict that A should go to zero. C1 BROOKHAVEN NATL LAB,DEPT ALTERNATING GRADIENT SYNCHROTRON,UPTON,NY 11973. TEXAS A&M UNIV SYST,DEPT PHYS,COLLEGE STN,TX 77843. TRIUMF,VANCOUVER V6T 2A3,BC,CANADA. KING FAHD UNIV,DHAHRAN 31261,SAUDI ARABIA. RP CRABB, DG (reprint author), UNIV MICHIGAN,RANDALL LAB PHYS,ANN ARBOR,MI 48109, USA. NR 42 TC 42 Z9 42 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 DEC 24 PY 1990 VL 65 IS 26 BP 3241 EP 3244 DI 10.1103/PhysRevLett.65.3241 PG 4 WC Physics, Multidisciplinary SC Physics GA EP045 UT WOS:A1990EP04500009 ER PT J AU HUANG, KG GIBBS, D ZEHNER, DM SANDY, AR MOCHRIE, SGJ AF HUANG, KG GIBBS, D ZEHNER, DM SANDY, AR MOCHRIE, SGJ TI PHASE-BEHAVIOR OF THE AU(111) SURFACE - DISCOMMENSURATIONS AND KINKS SO PHYSICAL REVIEW LETTERS LA English DT Article ID SCANNING TUNNELING MICROSCOPY; STRESS TENSOR; GOLD; DISLOCATIONS; RECONSTRUCTION; DIFFRACTION; TRANSITION AB The clean Au(111) surface is found, using x-ray diffraction, to reconstruct between 300 and 1250 K with two distinct phases. Below 865 K, the surface structure consists of an equilibrium density of kinks between rotationally equivalent domains, each of which is itself composed of a sequence of uniaxial discommensurations. Above 880 K, the arrangement of kinks and discommensurations is disordered, which results in an isotropic compression of the reconstructed layer. The phase transition between the two structures is first order. C1 OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. RP HUANG, KG (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 23 TC 124 Z9 124 U1 1 U2 23 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 DEC 24 PY 1990 VL 65 IS 26 BP 3313 EP 3316 DI 10.1103/PhysRevLett.65.3313 PG 4 WC Physics, Multidisciplinary SC Physics GA EP045 UT WOS:A1990EP04500027 ER PT J AU GONG, L STREITWIESER, A AF GONG, L STREITWIESER, A TI ORGANOLANTHANIDE CATALYSIS OF A MUKAIYAMA ADDITION-REACTION SO JOURNAL OF ORGANIC CHEMISTRY LA English DT Letter ID ACID MEDIATED REACTIONS; SILYL ENOL ETHERS; CARBONYL-COMPOUNDS; ALDOL REACTION; SIMPLE DIASTEREOSELECTION; ACYCLIC STEREOSELECTION; ALDEHYDES; COMPLEXES AB Bis[bis(1,3-trimethylsilyl)cyclopentadienyl]-ytterbium(III) chloride, Cp''2YbCl, 2, is an effective catalyst in the presence of additional trimethylsilyl chloride for the reaction of silyl ester enolates, such as the trimethylsilyl enolate of methyl isobutyrate, 1, with aliphatic and aromatic aldehydes, to yield beta-silyloxy esters. The reaction shows good diastereoselection that is readily rationalized with a cyclic transition-state mechanism in which a key feature is the important role played by restricted coordination space around the lanthanide cation. C1 UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. NR 24 TC 54 Z9 54 U1 0 U2 0 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 DEC 21 PY 1990 VL 55 IS 26 BP 6235 EP 6236 DI 10.1021/jo00313a002 PG 2 WC Chemistry, Organic SC Chemistry GA EP605 UT WOS:A1990EP60500002 ER PT J AU AMES, BN GOLD, LS AF AMES, BN GOLD, LS TI CARCINOGENS AND HUMAN HEALTH .1. RESPONSE SO SCIENCE LA English DT Letter C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, CARCINOGEN POTENCY DATABASE, BERKELEY, CA 94720 USA. RP UNIV CALIF BERKELEY, DEPT MOLEC & CELL BIOL, BERKELEY, CA 94720 USA. NR 28 TC 15 Z9 15 U1 1 U2 3 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 EI 1095-9203 J9 SCIENCE JI Science PD DEC 21 PY 1990 VL 250 IS 4988 BP 1645 EP 1646 DI 10.1126/science.250.4988.1645 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EN920 UT WOS:A1990EN92000004 PM 17734690 ER PT J AU CREASE, R AF CREASE, R TI CHOOSING DETECTORS FOR THE SSC SO SCIENCE LA English DT Editorial Material C1 BROOKHAVEN NATL LAB, UPTON, NY 11973 USA. RP SUNY STONY BROOK, PHILOSOPHY SCI, STONY BROOK, NY 11794 USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 EI 1095-9203 J9 SCIENCE JI Science PD DEC 21 PY 1990 VL 250 IS 4988 BP 1648 EP 1650 DI 10.1126/science.250.4988.1648 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EN920 UT WOS:A1990EN92000008 PM 17734693 ER PT J AU ALVAREZ, W ASARO, F MONTANARI, A AF ALVAREZ, W ASARO, F MONTANARI, A TI IRIDIUM PROFILE FOR 10-MILLION YEARS ACROSS THE CRETACEOUS-TERTIARY BOUNDARY AT GUBBIO (ITALY) SO SCIENCE LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. RP UNIV CALIF BERKELEY, DEPT GEOL & GEOPHYS, BERKELEY, CA 94720 USA. FU NIDCR NIH HHS [DE-AC03-76SF00098] NR 34 TC 37 Z9 39 U1 0 U2 6 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 EI 1095-9203 J9 SCIENCE JI Science PD DEC 21 PY 1990 VL 250 IS 4988 BP 1700 EP 1702 DI 10.1126/science.11538083 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EN920 UT WOS:A1990EN92000037 PM 11538083 ER PT J AU SNYDER, WA KOWALSKI, MP CRUDDACE, RG FRITZ, GG MIDDLEDITCH, J FENIMORE, EE ULMER, MP MAJEWSKI, SR AF SNYDER, WA KOWALSKI, MP CRUDDACE, RG FRITZ, GG MIDDLEDITCH, J FENIMORE, EE ULMER, MP MAJEWSKI, SR TI SPARTAN-1 X-RAY OBSERVATIONS OF THE PERSEUS CLUSTER .2. THE DISTRIBUTION OF FLUX AND HARDNESS RATIO OUT TO A RADIUS OF 50 ARCMINUTES SO ASTROPHYSICAL JOURNAL LA English DT Article C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60201. RP SNYDER, WA (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 4120,WASHINGTON,DC 20375, USA. NR 46 TC 15 Z9 15 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 DEC 20 PY 1990 VL 365 IS 2 BP 460 EP 470 DI 10.1086/169500 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA EL773 UT WOS:A1990EL77300005 ER PT J AU BERN, Z DUNBAR, DC AF BERN, Z DUNBAR, DC TI CONFORMAL FIELD-THEORY ON SURFACES WITH BOUNDARIES AND NONDIAGONAL MODULAR INVARIANTS SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A LA English DT Article RP BERN, Z (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,MS-B285,LOS ALAMOS,NM 87545, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0217-751X J9 INT J MOD PHYS A JI Int. J. Mod. Phys. A PD DEC 20 PY 1990 VL 5 IS 24 BP 4629 EP 4638 DI 10.1142/S0217751X9000194X PG 10 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA EK950 UT WOS:A1990EK95000002 ER PT J AU LIAW, YP SISTERSON, DL MILLER, NL AF LIAW, YP SISTERSON, DL MILLER, NL TI COMPARISON OF FIELD, LABORATORY, AND THEORETICAL ESTIMATES OF GLOBAL NITROGEN-FIXATION BY LIGHTNING SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID ELECTRICAL DISCHARGES; NOX PRODUCTION; TROPOSPHERE; OXIDES; AIR AB The various theoretical, laboratory, and field estimates reported in the literature for global nitrogen fixation by lightning have been calculated by using different lightning frequency values, channel lengths, and energy values. We have recalculated each of the individual estimates by using values of 7 km for channel length, two equivalent return strokes per lightning flash, and 100 flashes per second for global frequency, and a lightning energy input of 5 X 10(9) J per flash. The adjusted mean value is 72.2 +/- 96.2 Tg N yr-1 for the theoretical category, 19.1 +/- 10.0 Tg N yr-1 for the laboratory category, and 152 +/- 59.9 Tg N yr-1 for the field category. Each of the three category adjusted mean NO(x) global production rates is larger than previously reported contributions to the global N budget, making lightning potentially the single largest source. C1 ARGONNE NATL LAB, DIV ENVIRONM RES, ARGONNE, IL 60439 USA. RP LIAW, YP (reprint author), N CENT COLL, DEPT PHYS, NAPERVILLE, IL 60566 USA. RI Miller, Norman/E-6897-2010 NR 36 TC 48 Z9 49 U1 1 U2 4 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 DEC 20 PY 1990 VL 95 IS D13 BP 22489 EP 22494 DI 10.1029/JD095iD13p22489 PG 6 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA EQ840 UT WOS:A1990EQ84000015 ER PT J AU KAO, CYJ GLATZMAIER, GA MALONE, RC TURCO, RP AF KAO, CYJ GLATZMAIER, GA MALONE, RC TURCO, RP TI GLOBAL 3-DIMENSIONAL SIMULATIONS OF OZONE DEPLETION UNDER POSTWAR CONDITIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID CIRCULATION MODEL SIMULATIONS; NUCLEAR-WAR; INTERACTIVE TRANSPORT; SMOKE; AEROSOLS; ATMOSPHERE; EXPLOSIONS; WINTER AB Oxides of nitrogen (NO(x)) produced in nuclear fireballs could catalytically destroy stratospheric ozone. Since the NO(x) would be deposited in the upper troposphere and lower stratosphere below the level of maximum ozone concentration, earlier one-dimensional model results showed that the potential ozone destruction rate was limited by the slow rate of vertical diffusion of NO(x) into the stratosphere. In the current study, the presence of a massive amount of smoke which absorbs solar energy in the upper atmosphere introduces three important changes. First, solar-driven lofting of smoke-filled air displaces ozone-rich stratospheric air with ozone-poor air from the troposphere; at the same time ozone from the northern hemisphere is shifted into the southern hemisphere. Secondly, the modified large-scale circulation rapidly pushes NO(x) upward, which mixes NO(x) into the ozone layer much more quickly than previously thought. Finally, the heating of the stratosphere caused by the solar heating of the rising smoke increases the rates of catalytic chemical reactions that destroy ozone. Thus, NO(x) acts as a chemical catalyst and smoke acts as a thermal catalyst for ozone destruction. The results of simulation using general circulation model (GCM) suggest a rapid ozone depletion in the northern hemisphere. The smoke-induced transport alone can reduce the O3 column by 15-20 Dobson units between the tropics and 60-degrees-N after 20 days of simulation. With the chemical reactions included, approximately 15% of ozone is depleted between 25-degrees-N and 75-degrees-N after 20 days. C1 UNIV CALIF LOS ANGELES, DEPT ATMOSPHER SCI, LOS ANGELES, CA 90024 USA. RP KAO, CYJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. NR 30 TC 16 Z9 16 U1 0 U2 1 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 DEC 20 PY 1990 VL 95 IS D13 BP 22495 EP 22512 DI 10.1029/JD095iD13p22495 PG 18 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA EQ840 UT WOS:A1990EQ84000016 ER PT J AU TRILLING, GH AF TRILLING, GH TI A GENUINE GLOBAL COLLABORATION SO NATURE LA English DT Letter RP TRILLING, GH (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD DEC 20 PY 1990 VL 348 IS 6303 BP 669 EP 669 DI 10.1038/348669a0 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EP049 UT WOS:A1990EP04900021 ER PT J AU MENLOVE, HO MILLER, MC AF MENLOVE, HO MILLER, MC TI NEUTRON-BURST DETECTORS FOR COLD-FUSION EXPERIMENTS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB We have designed several neutron detectors for use in measuring neutrons from cold-fusion experiments. The high-efficiency detectors are based on He-3 gas tubes in a CH2 moderator. The total efficiency of our most advanced detector for 2.3 MeV (Cf-252) neutrons is 44%. The detector consists of two independent segments making up inner and outer rings of He-3 tubes. The inner detector has nine He-3 tubes and the outer detector has 42 He-3 tubes. The low-background inner detector has a singles count background of 97 counts/h and a coincidence count background of only 0.7 counts/h. The corresponding singles efficiency is 19%. The inside ring of tubes is undermoderated and it is more sensitive to lower-energy source neutrons. The outside ring of tubes is overmoderated and thus more sensitive to high-energy neutrons. The ratio of the outside tubes to the inside tubes gives the approximate average neutron energy based on differential transmission as a function of energy. Monte Carlo transport calculations have been performed to establish the energy calibration of the outside/inside tube-ring ratio. The time-correlation (coincidence) information is required to investigate neutron pulsing, bursts and other nonrandom emissions caused by nonequilibrium conditions and instabilities in the samples. The time correlations in our detector are obtained by using the shift-register-type electronic circuitry. Our detector system has been applied successfully to the measurement of neutron yield and multiplicity distribution from cold-fusion electrolysis samples and D2-gas-type samples. RP MENLOVE, HO (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 10 TC 5 Z9 5 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 10 EP 16 DI 10.1016/0168-9002(90)90738-R PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800003 ER PT J AU CRAWFORD, RK HAUMANN, JR EPPERSON, JE THIYAGARAJAN, P SCHULTZ, AJ FELCHER, GP MONTAGUE, DG DEJUS, RJ AF CRAWFORD, RK HAUMANN, JR EPPERSON, JE THIYAGARAJAN, P SCHULTZ, AJ FELCHER, GP MONTAGUE, DG DEJUS, RJ TI EXPERIENCE WITH POSITION-SENSITIVE NEUTRON DETECTORS AT THE INTENSE-PULSED-NEUTRON-SOURCE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID DATA ACQUISITION-SYSTEM AB At the Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory, pulses of protons accelerated in a synchrotron produce pulses of fast neutrons via the spallation process in an enriched uranium target. After moderation, the resulting pulses of slow neutrons are directed into beams which serve a variety of neutron-scattering instruments. Currently there are thirteen neutron-scattering instruments in operation or under development at IPNS, and six of these use position-sensitive neutron detectors (PSDs). These PSDs are: a 30 cm x 30 cm, approximately 3 mm resolution, neutron Anger camera area PSD with Li-6-glass scintillator; a 2.5 cm diameter, approximately 0.7 mm resolution, microchannel-plate area PSD with Li-6-glass scintillator; a 20 cm x 20 cm, approximately 5 mm resolution, He-3 proportional-counter area PSD; a 40 cm x 40 cm, approximately 4 mm resolution, He-3 proportional-counter area PSD; a flat 20 cm long, approximately 1.6 mm resolution, He-3 proportional-counter linear PSD; and 160 cylindrical He-3 proportional-counter linear PSDs, each of which is 1.27 cm in diameter and 60 cm long and has approximately 14 mm resolution. These detectors, in addition to being position-sensitive, resolve the time of the neutron capture with approximately 1-mu-s precision for neutron time-of-flight measurements. This paper will discuss these various PSDs with emphasis on the instrumental specifications and the reasons for the selection of the different types of PSDs, and will also discuss the observed performances of these PSDs. RP CRAWFORD, RK (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 16 TC 5 Z9 5 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 17 EP 24 DI 10.1016/0168-9002(90)90739-S PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800004 ER PT J AU FEHLAU, PE ATWATER, HF COOP, KL AF FEHLAU, PE ATWATER, HF COOP, KL TI NEUTRON-CHAMBER DETECTORS AND APPLICATIONS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB Detector applications in nuclear safeguards and waste management have included measuring neutrons from fission and (alpha,n) reactions with well-moderated neutron proportional counters, often embedded in a slab of polyethylene. Other less-moderated geometries are useful for detecting both bare and moderated fission-source neutrons with good efficiency. The neutron chamber is an undermoderated detector design comprising a large, hollow, polyethylene-walled chamber containing one or more proportional counters. Neutron-chamber detectors are relatively inexpensive, can have large apertures, usually through a thin chamber wall, and offer very good detection efficiency per dollar. For 10% of the cost, a neutron-chamber detector may give one-half the total detection efficiency of a slab detector for detecting neutrons from a distant, bare source. A nuclear-safeguards pedestrian monitor detects concealed plutonium using two such chamber detectors to form a walk-through portal. Neutron-chamber detectors have also been used for monitoring vehicles and for assaying large crates of transuranic waste. Our Monte Carlo calculations for a new application (monitoring low-density waste for concealed plutonium) illustrate the advantages of the hollow-chamber design for detecting moderated fission sources. RP FEHLAU, PE (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,GRP N2,LOS ALAMOS,NM 87545, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 29 EP 32 DI 10.1016/0168-9002(90)90741-N PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800006 ER PT J AU MIHALCZO, JT HILL, NW BLAKEMAN, ED PARE, VK AF MIHALCZO, JT HILL, NW BLAKEMAN, ED PARE, VK TI DETECTION-SYSTEM CHARACTERISTICS USING CF-252 IONIZATION CHAMBERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID FISSION AB Because for Cf-252 the number of neutrons and gamma rays and the energy spectrum of particles from spontaneous fission are well characterized, it can be used as a timed source of fission neutrons and gamma rays. This paper describes a timed source of neutrons and gamma rays made by depositing Cf-252 on one electrode of a parallel-plate ionization chamber that can then be used for determining detection-system characteristics. This well characterized source of neutrons can thus be used as a randomly pulsed source for a variety of applications. This paper illustrates the use of this type of source to determine the time resolution of detection systems, the efficiency for detection of neutrons between 0.5 and 5 MeV, the effectiveness of pulse-shape discrimination systems, and the overall efficiency for detection of prompt fission gamma rays. RP MIHALCZO, JT (reprint author), OAK RIDGE NATL LAB,POB 2008,BLDG 3500,OAK RIDGE,TN 37831, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 38 EP 40 DI 10.1016/0168-9002(90)90743-P PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800008 ER PT J AU MOSES, WW DERENZO, SE AF MOSES, WW DERENZO, SE TI THE SCINTILLATION PROPERTIES OF CERIUM-DOPED LANTHANUM FLUORIDE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID LIGHT AB We report on the scintillation properties of cerium-doped lanthanum fluoride (LaF3), a newly discovered dense (5.9 g/cm3) heavy-atom scintillator. We have investigated four dopant concentrations (0.01%, 1%, 10% and 50% mole fraction of CeF3) and measured the emission spectrum, light output and decay time distribution. The light output increases with increasing cerium concentration until a maximum is reached at 2200 photons/MeV at 10% CeF3, then decreases to 1900 photons/MeV at 50% CeF3. The emission spectrum depends on concentration, but tends to consist of a pair of peaks centered at approximately 350 and 290 nm, with the lower cerium concentrations having a greater fraction of shorter-wavelength emissions. While the decay time distribution also depends on concentrations, all samples are well described by the sum of three exponential components (3.0 ns, 26.5 ns, and a long component that varies between 140 and 275 ns), with the fraction of the 3.0 ns fast component increasing from 10% at 50% cerium to 15% at 1% cerium, and the fraction of the long component increasing from 3% at 50% cerium to 21% at 1% cerium. These scintillating compounds may be useful for applications where high rates and good stopping power are required, such as medical imaging and nuclear instrumentation. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. RP MOSES, WW (reprint author), UNIV CALIF BERKELEY, DONNER LAB, BERKELEY, CA 94720 USA. NR 13 TC 59 Z9 60 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 51 EP 56 DI 10.1016/0168-9002(90)90746-S PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800011 ER PT J AU BALDWIN, GT LANDRON, CO LEE, JR LEEPER, RJ LORENCE, LJ AF BALDWIN, GT LANDRON, CO LEE, JR LEEPER, RJ LORENCE, LJ TI FLASH X-RAY MEASUREMENTS WITH A TIME PROJECTION COMPTON SPECTROMETER SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB We have developed a "time projection Compton spectrometer" (TPCS) to measure the time-integrated photon energy spectrum between 0.1 and 2 MeV of short-pulse, intense bremsstrahlung sources. A target in the TPCS produces Compton electrons when illuminated by the flash X-ray source. Target electrons are trapped magnetically by current in a rod on the axis of an evacuated drift tube. The curvature and gradient of the magnetic field cause the electrons to drift parallel to the spectrometer axis. The time of electron arrival at the end of a 1 m drift encodes the energy spectrum of the X-ray burst. The detector is a plastic scintillator coupled to a fast photomultiplier tube. Despite heavy shielding, enough prompt X-rays penetrate to give a time fiducial. Background is measured on shots with the X-ray target removed. The response of the TPCS is calculated using the TIGERP computer code to model photon/electron transport in the target and a sophisticated algorithm to compute electron drift velocity. The response functions and signal are the known components of a matrix equation, which is solved to determine the unknown spectrum. We tested the TPCS with flash X-ray sources on the Saturn accelerator. Signals have been analyzed, spectra unfolded and results compared with other methods. RP BALDWIN, GT (reprint author), SANDIA NATL LABS, POB 5800, ALBUQUERQUE, NM 87185 USA. NR 14 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 66 EP 75 DI 10.1016/0168-9002(90)90749-V PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800014 ER PT J AU MOSS, CE STREETMAN, JR AF MOSS, CE STREETMAN, JR TI COMPARISON OF CALCULATED AND MEASURED RESPONSE FUNCTIONS FOR GERMANIUM DETECTORS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB This report compares calculated and measured germanium spectra for Zn-65, Cs-137 and Sn-113 sources and uranium and plutonium spherical shells. Good agreement over the full energy range of the spectra demonstrates that with detailed models excellent response functions can be calculated for germanium detectors. RP MOSS, CE (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 6 TC 7 Z9 7 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 98 EP 101 DI 10.1016/0168-9002(90)90755-U PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800020 ER PT J AU MCELHANEY, SA RAMSEY, JA BAUER, ML CHILES, MM AF MCELHANEY, SA RAMSEY, JA BAUER, ML CHILES, MM TI A RUGGEDIZED ZNS(AG)/EPOXY ALPHA-SCINTILLATION DETECTOR SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB An alpha scintillation survey instrument has been developed which is more rugged and efficient than conventional alpha scintillation detectors that use aluminized Mylar ** radiation entrance windows. This new detector consists of a mixture of ZnS(Ag) phosphor and optically transparent epoxy. The scintillator mixture is poured into a preformed mold to provide a thin layer of phosphor after the particles settle to the clear epoxy surface. After partial curing, an optically transparent light pipe is coupled to the ZnS(Ag)/epoxy film by using an additional thin epoxy layer, forming a monolithic scintillator assembly. Experimental results indicate that the new probe is 44% efficient (2-pi) for a large-area Pu-239 alpha source; resistant to scratches, tears, and corrosives; watertight; and temperature independent between -20-degrees-C and 54-degrees-C. RP MCELHANEY, SA (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37830, USA. NR 1 TC 4 Z9 4 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 111 EP 114 DI 10.1016/0168-9002(90)90758-X PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800023 ER PT J AU CADIEUX, JR AF CADIEUX, JR TI EVALUATION OF A PHOTOELECTRON-REJECTING ALPHA-LIQUID-SCINTILLATION (PERALS) SPECTROMETER FOR THE MEASUREMENT OF ALPHA-EMITTING RADIONUCLIDES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID ACTINIDES AB Results from the evaluation of a PERALS spectrometer for alpha-particle measurements by liquid-scintillation counting in samples from the nuclear-fuel cycle are presented. Examples of PERALS spectra of process, waste and environmental samples containing Th, U, Pu and Am from the Savannah River Site are shown. The advantages, disadvantages and limitations of the PERALS technique are discussed. RP CADIEUX, JR (reprint author), WESTINGHOUSE SAVANNAH RIVER CO,SAVANNAH RIVER LAB,AIKEN,SC 29808, USA. NR 13 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 119 EP 122 DI 10.1016/0168-9002(90)90760-4 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800025 ER PT J AU KWIATKOWSKI, K KOMISARCIK, K WILE, JL YENNELLO, SJ FIELDS, DE VIOLA, VE GLAGOLA, BG AF KWIATKOWSKI, K KOMISARCIK, K WILE, JL YENNELLO, SJ FIELDS, DE VIOLA, VE GLAGOLA, BG TI A LOGARITHMIC, LARGE-SOLID-ANGLE DETECTOR TELESCOPE FOR NUCLEAR FRAGMENTATION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID PHOTODIODE AB Properties of a logarithmic, large-solid-angle detector telescope for measuring the spectra of light charged particles and/or complex fragments produced in intermediate-energy nuclear reactions are described. Light-ion identification with a phoswich detector which consists of transmission photodiode DELTA-E and CsI(Tl) E elements is also discussed, as is the response of silicon microstrip detectors to fission fragments. C1 INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405. INDIANA UNIV,IUCF,BLOOMINGTON,IN 47405. ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439. RP KWIATKOWSKI, K (reprint author), INDIANA UNIV,DEPT CHEM,BLOOMINGTON,IN 47405, USA. RI Yennello, Sherry/B-5803-2015 OI Yennello, Sherry/0000-0003-3963-5217 NR 6 TC 17 Z9 17 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 166 EP 171 DI 10.1016/0168-9002(90)90769-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800034 ER PT J AU WILLIAMS, JA MIHALCZO, JT RICKER, CW GLESIUS, FL KNISS, TA AF WILLIAMS, JA MIHALCZO, JT RICKER, CW GLESIUS, FL KNISS, TA TI A HIGH-SENSITIVITY, POSITION-SENSITIVE FISSION CHAMBER FOR SUBCRITICALITY MEASUREMENTS OF SPENT FUEL SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB A high-sensitivity fission counter has been developed for subcriticality measurements by the Cf-252-source-driven neutron noise analysis method which requires two neutron counter channels. Performance specifications were provided by ORNL for spent light water reactor (LWR) fuel configurations where multiplication factors (k-values) could be as low as 0.85. A 3 x 3 array of 2 in. diameter, 8 ft long counters, fits into storage rack positions occupied by LWR fuel elements. Each counter consists of eight sensitive sections that contain a total of approximately 18 g of U-235. Transmission-line technology is used to minimize capacitances and thus provides broad bandwidths. Each event in the fission counter produces two current pulses propagating in opposite directions on the transmission line. The differences in arrival times of the pulses at the ends of a counter determine the positions of the fission events. Tests on two fission counters show that each counter has a sensitivity of 12.5 cps/nv(th) and a position sensitivity with 1 ft resolution. Detection efficiency estimates for spent LWR fuel configurations indicate that, using two fission counters, subcriticality measurements can be made down to a k-value of 0.80: for two 3 x 3 counter arrays, to a k-value of 0.65. The 3 x 3 counter array or a single counter can be used in applications other than subcriticality measurements where position sensitivity, high sensitivity, and operability in high gamma fields are performance requirements. C1 REUTER STOKES INC,TWINSBURG,OH 44087. RP WILLIAMS, JA (reprint author), OAK RIDGE NATL LAB,DIV INSTRUMENTAT & CONTROLS,POB 2008,OAK RIDGE,TN 37831, USA. NR 7 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 187 EP 190 DI 10.1016/0168-9002(90)90773-Y PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800038 ER PT J AU HARRIS, TJ MATHIESON, E MIR, JA SMITH, GC AF HARRIS, TJ MATHIESON, E MIR, JA SMITH, GC TI STUDIES OF BASIC PARAMETERS OF ELECTRON-COUNTING DETECTION SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID GAS-MIXTURES AB Measurements have been made of certain parameters relevant to the operation of electron-counting detectors. An experimental chamber consisting of a uniform-field drift tube and a coaxial proportional counter has been employed to obtain data, at very low drift fields (E/p < 0.02 V/cm Torr), on electron mobility and lifetimes in a range of gas mixtures. These mixtures included argon, methane, nitrogen and carbon dioxide. Measurements of single-electron spectra showed that, unexpectedly for the standard gas mixtures employed, useful departure from an exponential spectrum was not possible without the production of cathode secondaries. Although the present studies employed only the counter electrical signal the information obtained should be directly relevant to the operation of practical light-pulse systems. Examples of electron-counting spectra for soft X-rays are shown. C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP HARRIS, TJ (reprint author), UNIV LEICESTER,DEPT PHYS,LEICESTER LE1 7RH,ENGLAND. NR 13 TC 3 Z9 3 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 195 EP 200 DI 10.1016/0168-9002(90)90775-2 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800040 ER PT J AU AHMAD, I BETTS, RR HAPP, T HENDERSON, DJ WOLFS, FLH WUOSMAA, AH AF AHMAD, I BETTS, RR HAPP, T HENDERSON, DJ WOLFS, FLH WUOSMAA, AH TI NUCLEAR SPECTROSCOPY WITH SI PIN DIODE DETECTORS AT ROOM-TEMPERATURE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN ID ELECTRON AB The characteristics of PIN diodes have been determined. These diodes have lower leakage currents and noise than other types of Si radiation detectors. The energy resolutions (FWHM) of a 1 cm2 x 0.5 mm PIN diode measured with a pulser, 122.0 keV gamma-rays, 193 keV electrons and 5.5 MeV alpha-particles were 2.6, 2.8, 2.9 and 11.0 keV, respectively. For a 6 mm x 6 mm x 0.2 mm PIN diode, the resolutions (FWHM) for a pulser, 60 keV gamma-rays, 193 keV electrons and 5.5-Mev alpha-particles were 2.1, 2.2, 2.4 and 10.8 keV, respectively. RP AHMAD, I (reprint author), ARGONNE NATL LAB,DIV PHYS,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 6 TC 23 Z9 24 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 201 EP 204 DI 10.1016/0168-9002(90)90776-3 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800041 ER PT J AU CHIU, H BENNETT, EF MICKLICH, BJ AF CHIU, H BENNETT, EF MICKLICH, BJ TI GAMMA-HEATING MEASUREMENTS WITH PROPORTIONAL-COUNTERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB A new data acquisition technique (the continuously-varied bias-voltage acquisition mode) has been developed and tested for the low-flux broad-energy regime characteristic of existing fusion blanket mockups. This method of analysis allows for the acquisition of data spanning several orders of magnitude in energy with a single proportional counter. Utilizing this method, the gamma energy deposition in a mixed neutron and gamma field was measured. RP CHIU, H (reprint author), ARGONNE NATL LAB,FUS POWER PROGRAM,ARGONNE,IL 60439, USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 234 EP 239 DI 10.1016/0168-9002(90)90783-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800048 ER PT J AU DENTON, MM GARCIA, SR MINOR, MM AF DENTON, MM GARCIA, SR MINOR, MM TI A DISTRIBUTED DATA-ACQUISITION SYSTEM FOR GAMMA-SPECTRAL ANALYSIS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB The neutron-activation analysis staff at Los Alamos National Laboratory's Omega West Reactor has designed and constructed a distributed data-acquisition system for handling a large volume of gamma-ray spectra. Currently the system consists of five independent data-acquisition stations connected to a number of workstations via an Ethernet network. Each data-acquisition station supports up to eight detectors operating simultaneously and is capable of initiating automatic sample manipulation including, but not limited to, sample loading, irradiation, spectrum recording and spectrum storage. Control of the data-acquisition station can be accomplished locally with a computer terminal directly connected to the data-acquisition station or via a workstation connected to the network. RP DENTON, MM (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 268 EP 271 DI 10.1016/0168-9002(90)90789-9 PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800054 ER PT J AU CHAPMAN, TC AF CHAPMAN, TC TI PC-BASED ANALYSIS OF ALPHA-PARTICLE SPECTRA SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB Recently developed personal-computer (PC) software performs analysis of alpha-particle spectra. The spectra are collected using a commercially available multichannel analyzer board in the PC, interfaced with up to eight alpha-particle detectors. The PC is an IBM PC-AT computer with a 20 Mbyte Bernoulli-Box removable cartridge disk, a math coprocessor and a printer. Once saved on disk, the spectra are analyzed using the software described here. The PC analysis software performs automatic peak-area determination with operator override. Sample analysis can use measured detector efficiencies or chemical yields obtained from a radionuclide spike or both. Background contribution corrections for all peaks are included. Upper limit values are calculated for nuclides specified by the operator and not found in the sample. Nuclide identification uses a master table of up to 64 nuclides with up to 8 alpha lines for each nuclide. Any one of 32 available subtables can be selected for use in an analysis. Analysis time is short and is limited by interaction with the operator, not by calculation time. Both detailed and summary versions of final results are printed for ease of data reporting. Utilities included with the software provide nuclide table editing, subset table editing, energy calibration, efficiency calibration and background analysis with background correction file update. RP CHAPMAN, TC (reprint author), WESTINGHOUSE IDAHO NUCL CO,IDAHO NATL ENGN LAB,POB 4000,IDAHO FALLS,ID 83403, USA. NR 3 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 272 EP 275 DI 10.1016/0168-9002(90)90790-D PG 4 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800055 ER PT J AU ZUCKER, MS TSOUPAS, N AF ZUCKER, MS TSOUPAS, N TI AN N-GAMMA-PULSE DISCRIMINATION SYSTEM FOR WIDE ENERGY RANGES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB A computer-based electronic system has been constructed for unfolding energy spectra of neutrons and gammas for energies from < 100 keV to 200 MeV, and could probably work at higher energies. It is based wholly on standard commercial NIM and CAMAC modules interfaced to a PC-AT computer, with a photomultiplier detector viewing BC501A or equivalent. The same adjustment of electronics suffices for simultaneous capture of the entire energy range. The dynode signal is integrated over two separate time periods using gated charge ADC units. The "prompt" gate contains mainly the fast component of the scintillator light output, the "delayed" gate mostly the slow component. The anode signal is used for timing the system and for time-of-flight. The two integrals (and any other information) are stored in an event-by-event mode. A scatter plot of the integrals has two distinct loci, one for the gamma events, the other for neutrons. This method has been reported previously [J.H. Hettsley et al., Nucl. Instr. and Meth. A263 (1986) 441] and is presently in use by several research groups. The decision as to n or gamma is made in < 300 ns, but using the fastest available CAMAC ADC limits the peak count rate to approximately 110 kHz. RP ZUCKER, MS (reprint author), BROOKHAVEN NATL LAB,UPTON,NY 11973, USA. NR 4 TC 16 Z9 17 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 281 EP 285 DI 10.1016/0168-9002(90)90792-5 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800057 ER PT J AU GEHRKE, RJ AF GEHRKE, RJ TI REVISION OF THE ANSI-N42.14 PERFORMANCE STANDARD FOR GE GAMMA-RAY SPECTROMETRY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB A major revision of the American National Standards Institute (ANSI) Standard N42.14, "Calibration and Use of Germanium Detectors for the Measurement of Gamma-Ray Emission Rates of Radionuclides", is in process. The revised standard is more detailed and addresses aspects of Ge gamma-ray spectrometry not covered in the previous standard. Instructions are provided for initial setup, energy calibration, efficiency measurement, and measurement or calculation of corrections for pulse pileup, radioactive decay and absorption. Performance tests are provided (1) to evaluate the peak-finding algorithm, (2) to verify the independence of the net-peak area with respect to the base-line height, (3) to evaluate the doublet-fitting algorithm, and (4) to verify the accuracy of pulse pileup corrections. A simple procedure to assess the magnitude of cascade-coincidence summing is presented. The assignment of uncertainties, averaging of multiple measurements and propagation of uncertainties are discussed. Appendices to the standard contain procedures for optional use in the (1) setup and characterization of a Ge gamma-ray spectrometer, (2) preparation of working standards or QC samples, (3) measurement of the peak position and area, (4) correction for cascade gamma-ray summing, and (5) construction of a detector shield. RP GEHRKE, RJ (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415, USA. NR 2 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 302 EP 307 DI 10.1016/0168-9002(90)90796-9 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800061 ER PT J AU SAMPSON, TE PARKER, JL AF SAMPSON, TE PARKER, JL TI APPLICATIONS OF GAMMA-RAY SPECTROMETRY IN THE QUANTITATIVE NONDESTRUCTIVE ASSAY OF SPECIAL NUCLEAR-MATERIALS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB Nearly all applications of gamma-ray spectrometry in the quantitative assay of special nuclear materials can be grouped into five general categories. They are as follows: 1) quantitative passive assay, of which transmission-corrected passive assay methods for measuring isotopic masses/concentrations are an important subset; 2) enrichment measurements on "infinitely thick" samples for the absolute determination of isotopic fractions/concentrations; 3) measurements of isotopic ratios using relative detection efficiency principles resulting in absolute isotopic distributions without recourse to standards; 4) absorption-edge densitometry measurements of elemental concentrations; and 5) X-ray fluorescence measurements of elemental concentrations. Careful and correct practice of these techniques can yield measurement accuracies in the range of 0.1-1.0% in favorable situations with measurement times generally in the range of 15 min to 1 h. We present examples of these general categories with emphasis on those measurements and techniques exhibiting the best accuracy, as well as those which are not routinely practiced in many other applications of gamma-ray spectrometry. RP SAMPSON, TE (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 20 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 327 EP 334 DI 10.1016/0168-9002(90)90801-C PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800066 ER PT J AU GUNNINK, R AF GUNNINK, R TI NEW METHOD FOR CALIBRATING A GE DETECTOR BY USING ONLY ZERO TO 4 EFFICIENCY POINTS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB We have developed a method whereby the efficiency of a coaxial germanium detector can be determined with an accuracy of a few percent for the energy region from 0.05 to 4.0 MeV by using only the specifications provided by the manufacturer. The accuracy can be further improved to within 1-2% by using one to four (or more) measured efficiency points. Our method also allows the detector efficiency-versus-energy curve to be applied to any source-to-detector distance. RP GUNNINK, R (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551, USA. NR 4 TC 21 Z9 21 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 372 EP 376 DI 10.1016/0168-9002(90)90807-I PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800072 ER PT J AU ROBINSON, L DYER, FF EMERY, JF AF ROBINSON, L DYER, FF EMERY, JF TI PROPOSED NEUTRON-ACTIVATION ANALYSIS FACILITIES IN THE ADVANCED-NEUTRON-SOURCE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB A number of analytical-chemistry experimental facilities are being proposed for the Advanced Neutron Source. Experimental capabilities will include neutron activation analysis, prompt gamma-ray analysis and neutron depth profiling. This paper describes the various systems proposed and some of their important characteristics. RP ROBINSON, L (reprint author), OAK RIDGE NATL LAB,POB 2008,BLDG,4500 S,OAK RIDGE,TN 37831, USA. NR 0 TC 1 Z9 1 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 413 EP 415 DI 10.1016/0168-9002(90)90815-N PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800080 ER PT J AU EWING, RI MARLOW, KW AF EWING, RI MARLOW, KW TI A FAST-NEUTRON DETECTOR USED IN VERIFICATION OF THE INF-TREATY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB We describe the design and calibration of the neutron-detection equipment used in support of the INF Treaty, and some measurements made on Soviet missiles. The fast-neutron detector, consisting of twelve He-3 gas proportional tubes in a cadmium-covered polyethylene moderator, produces about 67 counts/s in a flux of neutrons from Cf-252 equal to 1 neutron/cm2s. This detector is used to determine the spatial pattern of neutrons emitted from the nuclear warheads on the missiles. RP EWING, RI (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 3 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 559 EP 561 DI 10.1016/0168-9002(90)90843-U PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800108 ER PT J AU CHILES, MM AF CHILES, MM TI DUAL SILICON SURFACE-BARRIER DETECTORS AND ASSOCIATED ELECTRONICS FOR MONITORING CHEMICAL-SEPARATION OF CF-249 AND BK-249 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB The isotopes Cf-249 and Bk-249 are chemically separated by ion-exchange chromatography at the Oak Ridge National Laboratory Transuranium Processing Plant. Control of the separation depends on the operator's ability to distinguish electronically between alpha radiation from the Cf-249 and beta particles from the Bk-249. This new monitoring system consists of two surface-barrier detectors, each having its own channel of electronics and data acquisition. The two detectors are mounted in a Teflon holder and positioned near the tip of the ion-exchange column, where droplets of solution are formed as the nuclides are eluted from the column. Amplifier gain and window settings on the single-channel analyzer (SCA) for one detector are adjusted to count the energetic alpha particles from the Cf-249, while the electronic settings of the other channel are adjusted to count the lower-energy beta particles from Bk-249. The alpha count rate will increase first as Cf-249 passes from the column; then the beta count rate increases, indicating that Bk-249 is being eluted. At this point, the operator can make a cut in the separation process. RP CHILES, MM (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 20 PY 1990 VL 299 IS 1-3 BP 597 EP 599 DI 10.1016/0168-9002(90)90852-W PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800117 ER PT J AU GOSNELL, TB AF GOSNELL, TB TI AUTOMATED CALCULATION OF PHOTON SOURCE EMISSION FROM ARBITRARY MIXTURES OF NATURALLY RADIOACTIVE HEAVY NUCLIDES SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article; Proceedings Paper CT 7TH SYMP ON X-RAY AND GAMMA-RAY SOURCES AND APPLICATIONS : RADIATION MEASUREMENTS AND APPLICATIONS CY MAY 21-24, 1990 CL UNIV MICHIGAN, ANN ARBOR, MI SP US DOE, NATL INST STAND & TECHNOL, UNIV MICHIGAN, HENRY FORD HOSP, ALBION COLL, E MICHIGAN UNIV HO UNIV MICHIGAN AB Our computer code, GAMGEN, computes unscattered photon source spectra from arbitrary mixtures of naturally radioactive heavy nuclides. These spectra can describe the photon source for radiation transport codes. GAMGEN output is currently in MCNP format. GAMGEN obtains the specific activities of mixed nuclides and their successive daughter-specific activities by computing general solutions to the Bateman equations, including decay mode branching. After completion of the solution for each branch, the X- and gamma-ray line contributions for each of the nuclides below the branch point are weighted and accumulated. In addition to line emissions, provision has been made for including a library of corresponding bremsstrahlung spectra for each nuclide. GAMGEN is quite flexible for preparing source descriptions. X- and gamma-ray lines can be output as discrete lines, binned in groups, or key discrete lines can be selected and the remainder formed into bins. RP GOSNELL, TB (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 16 TC 4 Z9 4 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 DEC 20 PY 1990 VL 299 IS 1-3 BP 682 EP 686 DI 10.1016/0168-9002(90)90869-8 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EV528 UT WOS:A1990EV52800134 ER PT J AU HILL, CT STEINHARDT, PJ TURNER, MS AF HILL, CT STEINHARDT, PJ TURNER, MS TI CAN OSCILLATING PHYSICS EXPLAIN AN APPARENTLY PERIODIC UNIVERSE SO PHYSICS LETTERS B LA English DT Article ID PSEUDO-GOLDSTONE BOSONS AB Recently, Broadhurst et al. have reported an apparent periodicity in a north-south pencil-beam red-shift survey of galaxies. We consider whether the periodicity may be an illusion caused by the oscillations of physical constants. Should the periodicity by disproven by subsequent observations, the same analysis can be used to derive new, stringent limits on the variations of physical constants. C1 UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104. UNIV CHICAGO,ENRICO FERMI INST,DEPT PHYS & ASTRON,CHICAGO,IL 60637. UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTROPHYS,CHICAGO,IL 60637. FERMI NATL ACCELERATOR LAB,NASA FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. RP HILL, CT (reprint author), FERMI NATL ACCELERATOR LAB,DEPT THEORET PHYS,POB 500,BATAVIA,IL 60510, USA. NR 17 TC 40 Z9 40 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 DEC 20 PY 1990 VL 252 IS 3 BP 343 EP 348 DI 10.1016/0370-2693(90)90549-L PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ER475 UT WOS:A1990ER47500008 ER PT J AU ALSTONGARNJOST, M AF ALSTONGARNJOST, M TI INCLUSIVE D-STAR+/- PRODUCTION IN PHOTON PHOTON COLLISIONS SO PHYSICS LETTERS B LA English DT Article ID S '29 GEV; E+E ANNIHILATION; DSTAR PRODUCTION; MESON PRODUCTION; FRAGMENTATION; MODEL; QUARK; JETS AB The TPC/Two-Gamma collaboration has measured the inclusive cross section for production of charmed D*+/- mesons in photon-photon collisions. The reaction utilized was e+e- --> e+e- D* +/- X, with D* +/- --> D0-pi +/-, D0 --> K +/- pi +/-, and either zero or one outgoing e +/- detected. The res ult, sigma(e+e- --> e+e-D* +/- X) = 74 +/- 26 +/- 19 pb, is in agreement with the quark parton model prediction for e+e- --> e+e-ccBAR, combined wit h a Lund model for the hadronization of the charmed quarks. RP ALSTONGARNJOST, M (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 19 TC 31 Z9 31 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 DEC 20 PY 1990 VL 252 IS 3 BP 499 EP 504 DI 10.1016/0370-2693(90)90578-T PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA ER475 UT WOS:A1990ER47500037 ER PT J AU CAMAIONI, DM AF CAMAIONI, DM TI CALCULATION OF STRUCTURES AND BOND-DISSOCIATION ENERGIES OF RADICAL CATIONS - THE IMPORTANCE OF THROUGH-BOND DELOCALIZATION IN BIBENZYLIC SYSTEMS SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ELECTRON-SPIN-RESONANCE; CARBON-CARBON BOND; C-C BOND; ORGANIC-CHEMISTRY; GROUND-STATES; CLEAVAGE; OXIDATION; IONS; MOLECULES; RADIOLYSIS AB Structures and energies (DELTA-H-degrees-f of radical cations and their radical and cationic fragments have been calculated by use of AM1 semiempirical molecular orbital theory and compared with experimental data in the literature. Experimental DELTA-H-degrees-f correlate linearly with calculated heats giving monzero intercepts and nonunit slopes. The best correlations as judged by the variance of the fit are obtained when performed according to structure types, i.e., aromatic radical cations, alkane radical cations, radicals, and cations. These correlations enable corrections to AM1 values that allow prediction of experimental DELTA-H-degrees-f with uncertainties that approach experimental uncertainties. Used in this way, AM1 can augment experimental thermochemical data and enable confident predictions of reaction enthalpies. Bibenzylic radical cations are calculated to have charge and spin localized in only one of the aromatic rings in their lowest energy conformations. No minima for bibenzylic structures with delocalization between the aromatic rings either through space or through the ethylenic bond are found. Reaction paths for scission of radical cations are judged to be differentiated by whether the scissions are endothermic or exothermic. Endothermic scissions, such as for bibenzyl radical cation, are predicted to be loose, late-transition states. Barriers to recombination are negligible, and bonding interactions occur over relatively large distances. Exothermic scissions, such as for bicumyl radical cation, conversely are calculated to have tight, early-transition states. Structures with through-space delocalization appear to be important models for transition states of exothermic fragmentation reactions of radical cations, i.e., fragmentation of bicumyl radical cation to cumyl cation and cumyl radical. RP CAMAIONI, DM (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 70 TC 58 Z9 58 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD DEC 19 PY 1990 VL 112 IS 26 BP 9475 EP 9483 DI 10.1021/ja00182a005 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA EQ051 UT WOS:A1990EQ05100005 ER PT J AU BERGMAN, RG AF BERGMAN, RG TI A PHYSICAL ORGANIC ROAD TO ORGANOMETALLIC C-H OXIDATIVE ADDITION-REACTIONS SO JOURNAL OF ORGANOMETALLIC CHEMISTRY LA English DT Article ID SATURATED-HYDROCARBONS; REDUCTIVE ELIMINATION; IRIDIUM COMPLEXES; BOND ACTIVATION; HYDROGEN; METHANE; INSERTION; STEP; ISOMERIZATION; INTERMEDIATE C1 LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720. RP BERGMAN, RG (reprint author), LAWRENCE BERKELEY LAB,DIV MAT CHEM & SCI,BERKELEY,CA 94720, USA. NR 35 TC 50 Z9 50 U1 0 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-328X J9 J ORGANOMET CHEM JI J. Organomet. Chem. PD DEC 18 PY 1990 VL 400 IS 1-2 BP 273 EP 282 DI 10.1016/0022-328X(90)83017-E PG 10 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA EQ064 UT WOS:A1990EQ06400017 ER PT J AU BROWN, DW MUSKET, RG MUNIR, ZA AF BROWN, DW MUSKET, RG MUNIR, ZA TI BURIED MONOCRYSTALLINE ALUMINUM LAYERS IN BERYLLIUM USING ION-IMPLANTATION SO APPLIED PHYSICS LETTERS LA English DT Article C1 UNIV CALIF DAVIS,DAVIS,CA 95616. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 6 TC 5 Z9 5 U1 0 U2 0 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 DEC 17 PY 1990 VL 57 IS 25 BP 2651 EP 2653 DI 10.1063/1.103793 PG 3 WC Physics, Applied SC Physics GA EM902 UT WOS:A1990EM90200009 ER PT J AU CARR, GL QUIJADA, M TANNER, DB HIRSCHMUGL, CJ WILLIAMS, GP ETEMAD, S DUTTA, B DEROSA, F INAM, A VENKATESAN, T XI, X AF CARR, GL QUIJADA, M TANNER, DB HIRSCHMUGL, CJ WILLIAMS, GP ETEMAD, S DUTTA, B DEROSA, F INAM, A VENKATESAN, T XI, X TI FAST BOLOMETRIC RESPONSE BY HIGH-TC DETECTORS MEASURED WITH SUBNANOSECOND SYNCHROTRON RADIATION SO APPLIED PHYSICS LETTERS LA English DT Article C1 UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611. BROOKHAVEN NATL LAB,NATL SYNCHROTRON LIGHT SOURCE,UPTON,NY 11973. BELL COMMUN RES INC,RED BANK,NJ 07701. RUTGERS STATE UNIV,DEPT PHYS,PISCATAWAY,NJ 08855. MIDDLEBURY COLL,DEPT PHYS,MIDDLEBURY,VT 05753. RI Venkatesan, Thirumalai/E-1667-2013 NR 26 TC 96 Z9 98 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 DEC 17 PY 1990 VL 57 IS 25 BP 2725 EP 2727 DI 10.1063/1.103772 PG 3 WC Physics, Applied SC Physics GA EM902 UT WOS:A1990EM90200034 ER PT J AU HRUBESH, LW AF HRUBESH, LW TI AEROGELS - THE WORLDS LIGHTEST SOLIDS SO CHEMISTRY & INDUSTRY LA English DT Article RP HRUBESH, LW (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,BOX 808 L-322,LIVERMORE,CA 94550, USA. NR 25 TC 21 Z9 24 U1 3 U2 11 PU SOC CHEMICAL INDUSTRY PI LONDON PA 14 BELGRAVE SQUARE, LONDON, ENGLAND SW1X 8PS SN 0009-3068 J9 CHEM IND-LONDON JI Chem. Ind. PD DEC 17 PY 1990 IS 24 BP 824 EP 827 PG 4 WC Chemistry, Applied SC Chemistry GA EP362 UT WOS:A1990EP36200003 ER PT J AU LEBOEUF, P KURCHAN, J FEINGOLD, M AROVAS, DP AF LEBOEUF, P KURCHAN, J FEINGOLD, M AROVAS, DP TI PHASE-SPACE LOCALIZATION - TOPOLOGICAL ASPECTS OF QUANTUM CHAOS SO PHYSICAL REVIEW LETTERS LA English DT Article C1 WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093. RP LEBOEUF, P (reprint author), INST PHYS NUCL,DIV PHYS THEOR,F-91406 ORSAY,FRANCE. RI Feingold, Mario/F-1400-2012 OI Feingold, Mario/0000-0001-9316-5856 NR 15 TC 105 Z9 105 U1 2 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 DEC 17 PY 1990 VL 65 IS 25 BP 3076 EP 3079 DI 10.1103/PhysRevLett.65.3076 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100004 ER PT J AU TURNER, MS WILCZEK, F AF TURNER, MS WILCZEK, F TI RELIC GRAVITATIONAL-WAVES AND EXTENDED INFLATION SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV CHICAGO,ENRICO FERMI INST,DEPT PHYS & ASTRON,CHICAGO,IL 60637. UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTROPHYS,CHICAGO,IL 60637. INST ADV STUDY,SCH NAT SCI,PRINCETON,NJ 08540. RP TURNER, MS (reprint author), FERMI NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510, USA. NR 37 TC 81 Z9 81 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 17 PY 1990 VL 65 IS 25 BP 3080 EP 3083 DI 10.1103/PhysRevLett.65.3080 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100005 ER PT J AU BARGER, V PHILLIPS, RJN WHISNANT, K AF BARGER, V PHILLIPS, RJN WHISNANT, K TI LONG-WAVELENGTH VACUUM NEUTRINO OSCILLATIONS AND THE SOLAR-NEUTRINO DEFICIT SO PHYSICAL REVIEW LETTERS LA English DT Article C1 RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. RP BARGER, V (reprint author), UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706, USA. NR 18 TC 40 Z9 40 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 17 PY 1990 VL 65 IS 25 BP 3084 EP 3087 DI 10.1103/PhysRevLett.65.3084 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100006 ER PT J AU MILEY, HS AVIGNONE, FT BRODZINSKI, RL COLLAR, JI REEVES, JH AF MILEY, HS AVIGNONE, FT BRODZINSKI, RL COLLAR, JI REEVES, JH TI SUGGESTIVE EVIDENCE FOR THE 2-NEUTRINO DOUBLE-BETA DECAY OF GE-76 SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV S CAROLINA, DEPT PHYS & ASTRON, COLUMBIA, SC 29208 USA. RP MILEY, HS (reprint author), PACIFIC NW LAB, DEPT PHYS & ASTRON, RICHLAND, WA 99352 USA. NR 30 TC 80 Z9 80 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 DEC 17 PY 1990 VL 65 IS 25 BP 3092 EP 3095 DI 10.1103/PhysRevLett.65.3092 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100008 ER PT J AU HOFFMANN, GW BARLETT, ML KIELHORN, W PAULETTA, G PURCELL, M RAY, L AMANN, JF JARMER, JJ JONES, KW PENTTILA, S TANAKA, N BURLESON, G FAUCETT, J GILANI, M KYLE, G STEVENS, L MACK, AM MIHAILIDIS, D AVERETT, T COMFORT, J GORGEN, J TINSLEY, J CLARK, BC HAMA, S MERCER, RL AF HOFFMANN, GW BARLETT, ML KIELHORN, W PAULETTA, G PURCELL, M RAY, L AMANN, JF JARMER, JJ JONES, KW PENTTILA, S TANAKA, N BURLESON, G FAUCETT, J GILANI, M KYLE, G STEVENS, L MACK, AM MIHAILIDIS, D AVERETT, T COMFORT, J GORGEN, J TINSLEY, J CLARK, BC HAMA, S MERCER, RL TI POLARIZED-PROTON ELASTIC-SCATTERING FROM POLARIZED C-13 SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. NEW MEXICO STATE UNIV,DEPT PHYS,LAS CRUCES,NM 88003. UNIV MINNESOTA,DEPT PHYS,MINNEAPOLIS,MN 55455. OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210. IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598. RP HOFFMANN, GW (reprint author), UNIV TEXAS,DEPT PHYS,AUSTIN,TX 78712, USA. RI Averett, Todd/A-2969-2011 NR 26 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 DEC 17 PY 1990 VL 65 IS 25 BP 3096 EP 3099 DI 10.1103/PhysRevLett.65.3096 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100009 ER PT J AU HO, KM CHAN, CT SOUKOULIS, CM AF HO, KM CHAN, CT SOUKOULIS, CM TI EXISTENCE OF A PHOTONIC GAP IN PERIODIC DIELECTRIC STRUCTURES SO PHYSICAL REVIEW LETTERS LA English DT Article C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. RP HO, KM (reprint author), IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011, USA. RI Soukoulis, Costas/A-5295-2008 NR 23 TC 1809 Z9 1928 U1 16 U2 108 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 DEC 17 PY 1990 VL 65 IS 25 BP 3152 EP 3155 DI 10.1103/PhysRevLett.65.3152 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100023 ER PT J AU ISAACS, ED MCWHAN, DB KLEIMAN, RN BISHOP, DJ ICE, GE ZSCHACK, P GAULIN, BD MASON, TE GARRETT, JD BUYERS, WJL AF ISAACS, ED MCWHAN, DB KLEIMAN, RN BISHOP, DJ ICE, GE ZSCHACK, P GAULIN, BD MASON, TE GARRETT, JD BUYERS, WJL TI X-RAY MAGNETIC SCATTERING IN ANTIFERROMAGNETIC URU2SI2 SO PHYSICAL REVIEW LETTERS LA English DT Article C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. MCMASTER UNIV,DEPT PHYS,HAMILTON L8S 4M1,ONTARIO,CANADA. ATOM ENERGY CANADA LTD,CHALK RIVER K0J 1J0,ONTARIO,CANADA. CORNELL UNIV,DEPT PHYS,ITHACA,NY 14853. RP ISAACS, ED (reprint author), AT&T BELL LABS,MURRAY HILL,NJ 07974, USA. RI Piper, Walter/B-7908-2009; Mason, Thomas/M-5809-2014 OI Mason, Thomas/0000-0003-1880-3971 NR 15 TC 117 Z9 117 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 DEC 17 PY 1990 VL 65 IS 25 BP 3185 EP 3188 DI 10.1103/PhysRevLett.65.3185 PG 4 WC Physics, Multidisciplinary SC Physics GA EM761 UT WOS:A1990EM76100032 ER PT J AU HAUGEN, DA ZEGAR, IS AF HAUGEN, DA ZEGAR, IS TI FORMATION OF HEMOGLOBIN-BENZO[A]PYRENE ADDUCTS IN HUMAN ERYTHROCYTES INCUBATED WITH BENZO[A]PYRENE AND HAMSTER-EMBRYO CELLS SO TOXICOLOGY LA English DT Article DE ADDUCT; BENZO[A]PYRENE; CARCINOGEN; CHROMATOGRAPHY; HEMOGLOBIN; INVITRO METABOLISM ID HEMOGLOBIN ADDUCTS; ETHYLENE-OXIDE; ALKYLATING-AGENTS; CIGARETTE SMOKERS; PROTEIN ADDUCTS; GENETIC RISKS; RAT; BINDING; INVIVO; DNA AB Evidence is accumulating that the levels of covalent carcinogen-macromolecule adducts, including adducts with hemoglobin, reflect biologically effective levels of carcinogen exposure. The purposes of the present study were (a) to establish a cellular system for obtaining adducts between intracellular human hemoglobin and metabolites of polycyclic aromatic hydrocarbons (PAH), and (b) to evaluate techniques for chromatographic characterization of the adducts. We showed that hemoglobin-benzo[a]pyrene adducts were formed when human erythrocytes were treated with [H-3]benzo[a]pyrene (BP) in the presence of hamster embryo fibroblasts, which are known to be effective for BP metabolism. After lysis of the erythrocytes, noncovalently bound BP and its metabolites were effectively removed from hemoglobin under mild conditions by using hydrophobic interaction and size-exclusion liquid chromatography. Three to five distinct adducts were resolved by reversed-phase and ion-exchange liquid chromatography. As determined by a two-step, reversed-phase liquid chromatographic procedure, trypsin treatment of globin from the cellular system yielded at least three of the four 7,8,9,10-tetrahydro-7,8,9,10-tetrahydroxy BP tetrols known to arise from mammalian metabolism of BP. This observation is consistent with both (a) the recently described formation of labile carboxyl esters via reaction of BP-7,8-dihydrodiol-9,10-epoxide (BPDE) with hemoglobin and (b) the known formation of both anti- and syn-BPDE in hamster embryo fibroblasts. In addition, high-performance liquid chromatographic analysis demonstrated the presence of other products presumed to be BP-peptide adducts because of their susceptibility to thermolysin treatment. RP HAUGEN, DA (reprint author), ARGONNE NATL LAB,DIV BIOL & MED RES,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 34 TC 2 Z9 3 U1 0 U2 1 PU ELSEVIER SCI IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0300-483X J9 TOXICOLOGY JI Toxicology PD DEC 17 PY 1990 VL 65 IS 1-2 BP 109 EP 122 DI 10.1016/0300-483X(90)90082-R PG 14 WC Pharmacology & Pharmacy; Toxicology SC Pharmacology & Pharmacy; Toxicology GA ET817 UT WOS:A1990ET81700008 PM 2274962 ER PT J AU LOGAN, J SCHLYER, DJ WOLF, AP FOWLER, JS BRODIE, JD AF LOGAN, J SCHLYER, DJ WOLF, AP FOWLER, JS BRODIE, JD TI D2-RECEPTOR OCCUPANCY AND PLASMA-CONCENTRATION OF ANTIPSYCHOTICS - RESPONSE SO BIOLOGICAL PSYCHIATRY LA English DT Letter C1 NYU,SCH MED,DEPT PSYCHIAT,NEW YORK,NY 10016. RP LOGAN, J (reprint author), BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0006-3223 J9 BIOL PSYCHIAT JI Biol. Psychiatry PD DEC 15 PY 1990 VL 28 IS 12 BP 1068 EP 1070 DI 10.1016/0006-3223(90)90612-6 PG 3 WC Neurosciences; Psychiatry SC Neurosciences & Neurology; Psychiatry GA EP894 UT WOS:A1990EP89400011 ER PT J AU PAIGE, ME HARRIS, CB AF PAIGE, ME HARRIS, CB TI ULTRAFAST STUDIES OF CHEMICAL-REACTIONS IN LIQUIDS - VALIDITY OF GAS-PHASE VIBRATIONAL-RELAXATION MODELS AND DENSITY DEPENDENCE OF BOUND ELECTRONIC STATE LIFETIMES SO CHEMICAL PHYSICS LA English DT Article ID ENERGY RELAXATION; GEMINATE RECOMBINATION; ABSORPTION-SPECTRUM; MOLECULAR-IODINE; CONDENSED PHASE; DYNAMICS; PREDISSOCIATION; SYSTEM; XENON; I2 AB The dynamics of the I2 geminate recombination reaction in liquid Xe are monitored with transient picosecond absorption spectroscopy as a function of solvent density and temperature. Specifically, the I2 X state vibrational relaxation and the nonradiative electronic curve crossing from the deeply bound A' and A states to the X state are measured over a Xe density range which spans the entire liquid phase region of the phase diagram. The density dependence of the X state vibrational relaxation is shown to be consistent with the isolated binary collision (IBC) model of vibrational relaxation through a procedure which, unlike previous studies of IBC theory, requires no estimate of the collision frequency. This verification procedure is performed by ascertaining whether vibrational energy versus time plots at different solvent density can be overlapped by a linear scaling of the time axis. The consistency with IBC theory demonstrated in this system is surprising because of the low I2 vibrational frequency (170-214 cm-1) and the large amplitude oscillations involved in the relaxation process. Contrary to theoretical predictions of the A'/A state lifetime based upon Langevin modeling in the high density Kramers limit, the A'/A state lifetime shows very little dependence on solvent density although both viscosity and activation barrier increase substantially with solvent density. This finding suggests that a non-Markovian description of the solvent frictional effects and a model of nonadiabatic curve crossing must be included in order to correctly calculate the excited state lifetime. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. RP PAIGE, ME (reprint author), UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720, USA. NR 53 TC 83 Z9 83 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD DEC 15 PY 1990 VL 149 IS 1-2 BP 37 EP 62 DI 10.1016/0301-0104(90)80129-L PG 26 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EQ087 UT WOS:A1990EQ08700005 ER PT J AU SCHWEIZER, KS CURRO, JG AF SCHWEIZER, KS CURRO, JG TI RISM THEORY OF POLYMER LIQUIDS - ANALYTICAL RESULTS FOR CONTINUUM MODELS OF MELTS AND ALLOYS SO CHEMICAL PHYSICS LA English DT Article ID INTEGRAL-EQUATION THEORY; PHASE-SEPARATION; MIXTURES; THERMODYNAMICS; FLUIDS; PARAMETER; EXPONENTS; DYNAMICS; BLENDS; STATE AB Exact and approximate analytical solutions to the polymer RISM integral equation theory for melts and alloys are derived for long, flexible Gaussian chains. Comparisons of predictions for the isothermal compressibility and site-site intermolecular pair correlation function with exact numerical results reveals that the simplifications invoked to achieve analytic solutions are surprisingly accurate. A detailed study of the effective chi-parameter and critical temperature of binary isotopic blends of linear chains and copolymers of various microstructures is presented. In three dimensions, novel non-mean field predictions for the scaling of the critical temperature with degree of polymerization and copolymer architecture are found, and a rich dependence of the corresponding prefactor on system-specific features is determined. The breakdown of Flory-Huggins theory is due to a relatively long range, but weak, concentration fluctuation process which is a consequence of the combined influences of chain connectivity, intermolecular excluded volume and dispersion-like interactions. Physical analogies with critical phenomena ideas are developed, and comparisons are made of the theoretical predictions with recent small-angle neutron scattering observations. RP SCHWEIZER, KS (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 49 TC 118 Z9 118 U1 2 U2 12 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD DEC 15 PY 1990 VL 149 IS 1-2 BP 105 EP 127 DI 10.1016/0301-0104(90)80133-I PG 23 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EQ087 UT WOS:A1990EQ08700009 ER PT J AU RAGHAVACHARI, K ROHLFING, CM BINKLEY, JS AF RAGHAVACHARI, K ROHLFING, CM BINKLEY, JS TI MOLECULAR-ORBITAL STUDIES ON CYCLIC SULFUR CLUSTERS - S6-S12 SO INTERNATIONAL JOURNAL OF MASS SPECTROMETRY LA English DT Article ID RAY STRUCTURAL-ANALYSES; VIBRATIONAL-SPECTRA; FORCE CONSTANTS; CRYSTAL-STRUCTURE; 2ND-ROW ELEMENTS; S12; CYCLOHEPTASULFUR; CYCLOHEXASULFUR; S8; CYCLODECASULFUR AB The geometric structures and relative stabilities of monocyclic sulfur clusters (S6-S12) are explored by means of ab initio quantum chemical calculations. The effects of polarization functions and electron correlation are included in these calculations. The optimized geometries of S6-S8 and S10-S12 are all in excellent agreement with the corresponding experimentally determined structures. The stereochemistry of cyclo-S6 exhibits features very similar to that of the valence-isoelectronic hydrocarbon cyclohexane. Vibrational frequencies are computed for all the clusters and compared with the corresponding experimental values. The relative stabilities of the different sulfur rings are compared with each other. C1 SANDIA NATL LABS, LIVERMORE, CA 94551 USA. RP RAGHAVACHARI, K (reprint author), AT&T BELL LABS, MURRAY HILL, NJ 07974 USA. NR 38 TC 7 Z9 7 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1387-3806 J9 INT J MASS SPECTROM JI Int. J. Mass Spectrom. PD DEC 15 PY 1990 VL 102 BP 313 EP 329 DI 10.1016/0168-1176(90)80067-D PG 17 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA ET921 UT WOS:A1990ET92100020 ER PT J AU TELSCHOW, KL WALTER, JB GARCIA, GV AF TELSCHOW, KL WALTER, JB GARCIA, GV TI LASER ULTRASONIC MONITORING OF CERAMIC SINTERING SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ELASTIC-CONSTANT DETERMINATION; VELOCITY-MEASUREMENT; OPTICAL-DETECTION; PULSED LASERS; GENERATION; ATTENUATION AB Noncontacting laser-ultrasonic measurements of the sintering of ceramic in real-time are described. Lasers are used for both generation and detection of ultrasonic waves propagating through the material. A pulsed laser generates the ultrasonic wave from thermoelastic absorption at the material surface. Detection is accomplished by a confocal Fabry-Perot interferometer, which is insensitive to the speckle nature of the scattered light from the sample surface and can obtain measurements from samples with rough or diffusely reflecting surfaces. The densification of the ceramic sample is determined by changes in the bulk longitudinal wave velocity and the sample shrinkage. RP TELSCHOW, KL (reprint author), EG&G IDAHO INC,IDAHO NATL ENGN LAB,IDAHO FALLS,ID 83415, USA. NR 24 TC 20 Z9 20 U1 0 U2 4 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 DEC 15 PY 1990 VL 68 IS 12 BP 6077 EP 6082 DI 10.1063/1.346895 PG 6 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100015 ER PT J AU ZIOLKOWSKI, RW LEWIS, DK AF ZIOLKOWSKI, RW LEWIS, DK TI VERIFICATION OF THE LOCALIZED-WAVE TRANSMISSION EFFECT SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MODES AB An acoustic array driven with a designed set of localized-wave (LW) solutions of the scalar-wave equation generates a robust, well-behave, transient pencil beam of ultrasound in water. The performance of the LW-pulse-driven array theoretically and experimentally exceeds a tenfold improvement over related continous-wave excitations of the same array. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. NR 11 TC 46 Z9 46 U1 0 U2 1 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 DEC 15 PY 1990 VL 68 IS 12 BP 6083 EP 6086 DI 10.1063/1.346896 PG 4 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100016 ER PT J AU GRADY, DE AF GRADY, DE TI PARTICLE-SIZE STATISTICS IN DYNAMIC FRAGMENTATION SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB Condensed matter, when subjected to intense disrupting forces through impact or radiation deposition, will break up into a randomly distributed array of fragments. An earlier analysis of random fragmentation is extended to account for fragmentation in bodies which are finite in extent and for bodies within which the minimum fragment size is bounded. The statistical fragment size relations are compared with molecular dynamic simulations of dynamic fragmentation, with fragmentation caused by the high-energy collision of nuclear particles, and with the distribution of galaxies in the universe which are assumed to be fragment debris from the primordial Big Bang. RP GRADY, DE (reprint author), SANDIA NATL LABS,DEPT SOLID DYNAM,ALBUQUERQUE,NM 87185, USA. NR 5 TC 59 Z9 62 U1 0 U2 14 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 DEC 15 PY 1990 VL 68 IS 12 BP 6099 EP 6105 DI 10.1063/1.347188 PG 7 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100018 ER PT J AU HERZOG, R WEBER, HW GRAY, KE KAMPWIRTH, RT MILLER, DJ MURDUCK, JM AF HERZOG, R WEBER, HW GRAY, KE KAMPWIRTH, RT MILLER, DJ MURDUCK, JM TI RADIATION EFFECTS IN SUPERCONDUCTING NBN/AIN MULTILAYER FILMS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SPUTTERED NBN FILMS; NEUTRON-IRRADIATION; ELECTRON-MICROSCOPY; FIELD AB The results of neutron irradiation up to a fluence of 10(23) m-2 (E > 0.1 MeV) are reported for sputtered NbN/A1N multilayer films. The superconducting properties change only slightly with neutron fluence. For the best multilayers, which exhibit critical current densities J(c) of > 10(8) A/m2 at 4.2 K and 20 T, the high-field data show virtually no change in J(c). It is therefore proved experimentally that NbN/A1N multilayers, which exhibit higher J(c) than single NbN thin films, exhibit the same extremely radiation-hard, high-field behavior which was reported previously for such NbN films. C1 MAX PLANCK INST SOLID STATE RES,HML,F-38042 GRENOBLE,FRANCE. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. RP HERZOG, R (reprint author), UNIV VIENNA,ATOMINST,A-1020 VIENNA,AUSTRIA. NR 20 TC 2 Z9 2 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 DEC 15 PY 1990 VL 68 IS 12 BP 6327 EP 6330 DI 10.1063/1.346876 PG 4 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100051 ER PT J AU BROWN, IG KELLY, JC AF BROWN, IG KELLY, JC TI CHARGE-TO-MASS SEPARATION IN A CURRENT COAXIAL LENS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ION-SOURCE AB We present results demonstrating the charge state separation of an ion beam in a purely cylindrical geometry using the azimuthal magnetic field of a straight conductor. This geometry, called a current coaxial lens has advantages for the analysis of intense ion beams where it is important to minimize space charge blow-up of the beam due to loss of space charge neutralization. A metal vapor vacuum arc ion source was used to produce an annular, low energy, aluminum ion beam of total beam current several tens of milliamperes and with charge state components Q = 1+, 2+, and 3+ at energies of 20, 40, and 60 keV, respectively. Separation of the three different charge state fractions of the beam was measured. The method has been shown to be effective for the case when the beam pulse is long compared to all ion transit times involved and the beam current is high in terms of the need for space charge neutralization. C1 UNIV NEW S WALES,SCH PHYS,KENSINGTON,NSW 2033,AUSTRALIA. RP BROWN, IG (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 11 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 15 PY 1990 VL 68 IS 12 BP 6368 EP 6371 DI 10.1063/1.346883 PG 4 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100058 ER PT J AU MILLER, SL NASBY, RD SCHWANK, JR RODGERS, MS DRESSENDORFER, PV AF MILLER, SL NASBY, RD SCHWANK, JR RODGERS, MS DRESSENDORFER, PV TI DEVICE MODELING OF FERROELECTRIC CAPACITORS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID THIN-FILM MEMORIES AB A physically based methodology is developed for modeling the behavior of electrical circuits containing nonideal ferroelectric capacitors. The methodology is illustrated by modeling the discrete ferroelectric capacitor as a stacked dielectric structure, with switching ferroelectric and nonswitching dielectric layers. Electrical properties of a modified Sawyer-Tower circuit are predicted by the model. Distortions of hysteresis loops due to resistive losses as a function of input signal frequency are accurately predicted by the model. The effect of signal amplitude variations predicted by the model also agree with experimental data. The model is used as a diagnostic tool to demonstrate that cycling degradation, at least for the sample investigated, cannot be modeled by the formation of nonswitching dielectric layer(s) or the formation of conductive regions near the electrodes, but is consistent with a spatially uniform reduction in the number of switching dipoles. RP MILLER, SL (reprint author), SANDIA NATL LABS,DIV 2144,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 20 TC 252 Z9 259 U1 2 U2 55 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 DEC 15 PY 1990 VL 68 IS 12 BP 6463 EP 6471 DI 10.1063/1.346845 PG 9 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100075 ER PT J AU PANKOVE, JI AF PANKOVE, JI TI TEMPERATURE-DEPENDENCE OF BORON NEUTRALIZATION IN SILICON BY ATOMIC-HYDROGEN SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SINGLE-CRYSTAL SILICON; DEFECTS; DEACTIVATION; PASSIVATION; ACCEPTORS; SI AB The dependence of boron neutralization on the hydrogenation temperature was studied systematically in 2-OMEGA-cm, B-doped crystalline silicon. The maximum penetration depth of H increases with temperature. The migration of H has an activation energy of 0.39 eV. The B neutralization, measured as surface resistivity, reaches a maximum at 100-degrees-C. The surface resistivity reverts to the bulk value above 160-degrees-C. The bond breaking that reactivates the acceptors has an activation energy of 0.76 eV. C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. RP PANKOVE, JI (reprint author), UNIV COLORADO,CTR OPTOELECTR COMP SYST,DEPT ELECT & COMP ENGN,BOULDER,CO 80309, USA. NR 20 TC 19 Z9 19 U1 1 U2 2 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 DEC 15 PY 1990 VL 68 IS 12 BP 6532 EP 6534 DI 10.1063/1.346831 PG 3 WC Physics, Applied SC Physics GA EP011 UT WOS:A1990EP01100091 ER PT J AU AZUMA, Y CHILDS, WJ AF AZUMA, Y CHILDS, WJ TI SPIN-ROTATION AND HYPERFINE-STRUCTURE IN THE X2-SIGMA+ STATE OF YTTRIUM MONOSULFIDE BY MOLECULAR-BEAM LASER-RADIO-FREQUENCY DOUBLE-RESONANCE SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID OPTICAL DOUBLE-RESONANCE; BAND; YS AB The molecular-beam laser-radio-frequency double-resonance method has been used to measure the spin-rotation and magnetic hyperfine structure of yttrium monosulfide (YS) in its X2-SIGMA-+ electronic ground state. The spin-rotation constant gamma is found to be positive, unlike that of YO. The Fermi contact and dipolar hyperfine interactions (due to the spin I = 1/2 of Y-89) are found to be rather close to the corresponding quantities in YO. The contact hfs constant b in the excited B2-GAMMA-+ state of YS was determined by combining the directly measured X2-SIGMA-+ splitting information with B-X optical hfs observations. RP AZUMA, Y (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 13 TC 10 Z9 10 U1 1 U2 4 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 DEC 15 PY 1990 VL 93 IS 12 BP 8415 EP 8419 DI 10.1063/1.459279 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EP160 UT WOS:A1990EP16000001 ER PT J AU EVANS, DR EVANS, GT HOFFMAN, DK AF EVANS, DR EVANS, GT HOFFMAN, DK TI CHATTERING COLLISIONS AND THEIR EFFECTS ON GAS-PHASE ROTATIONAL ENERGY RELAXATION CROSS-SECTIONS SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SQUARE-WELL GAS; KINETIC-THEORY; INTEGRALS; MIXTURES AB Rotational energy relaxation cross sections, sigma-R, for nitrogen in dilute atomic gases (He, Ne, Ar, and Xe) are calculated by classical trajectory simulations for a variety of simple potentials and from the Boltzmann equation for hard convex bodies in the single impulse collision approximation. The single impulse approximation, which ignores multiple impulse (chattering) collisions, is reasonably adequate to describe linear and angular momentum relaxation, but not rotational energy relaxation. For the light noble gases, the hard body derived results together with the small chattering corrections suffice to fit sigma-R. It is also the case that chattering collisions markedly decrease sigma-R from the single impulse approximation value for Xe-N2 in the hard-body model. However, the value of sigma-R experimentally measured and calculated by Kistemaker and de Vries using a soft potential is considerably less than that obtained from hard-body models including chattering. Addition of a square well attractive potential of the appropriate shape to the hard core potential leads to the desired decrease in sigma-R with well depth in accord with both the trajectory calculations and experiments of Kistemaker and de Vries. The reasons are analyzed. C1 OREGON STATE UNIV,DEPT CHEM,CORVALLIS,OR 97331. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. RP EVANS, DR (reprint author), TEKTRONIX INC,BEAVERTON,OR 97077, USA. NR 23 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 DEC 15 PY 1990 VL 93 IS 12 BP 8816 EP 8820 DI 10.1063/1.459219 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EP160 UT WOS:A1990EP16000047 ER PT J AU KANG, HC THIEL, PA EVANS, JW AF KANG, HC THIEL, PA EVANS, JW TI CLUSTER DIFFUSIVITY - STRUCTURE, CORRELATION, AND SCALING SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID SURFACE-DIFFUSION; MOLECULAR-DYNAMICS; PERCOLATION CLUSTERS; MOTION; MODEL; SIMULATION; ATOMS AB We have investigated the diffusion of clusters on a triangular lattice using Monte Carlo simulations. A cluster is defined as a two-dimensional collection of particles which are connected to each other, either directly or indirectly through other particles in the cluster, by nearest-neighbor bonds. Each particle is allowed to hop, with probability alpha-delta-b/2/(alpha-delta-b/2 + alpha-delta-b/2), to a vacant nearest-neighbor site with the constraint that the hop does not break the cluster. The change in the number of bonds is given by delta-b. The equilibrium clusters are correlated animals with structure controlled by the parameter alpha. We show that the diffusion coefficient of a cluster can be decomposed into two factors. One is a measure of the weighted length of the "active" perimeter and the other is a measure of the correlation between pairs of steps taken by the cluster during its walk. The perimeter measure is asymptotically proportional to cluster size N, as anticipated for ramified animals, but it crosses over to N1/2 dependence for smaller compact clusters with alpha > 1. Our focus is on the accurate determination of the size and structure dependence of the correlation factor, which is more sensitive to statistical fluctuations. As a result, we describe the scaling of the cluster diffusion coefficient with cluster size. C1 IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. RP KANG, HC (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011, USA. RI Kang, Hway Chuan/A-3401-2012 NR 26 TC 33 Z9 33 U1 3 U2 4 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 DEC 15 PY 1990 VL 93 IS 12 BP 9018 EP 9025 DI 10.1063/1.459708 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EP160 UT WOS:A1990EP16000070 ER PT J AU ORLANDO, TM BURNS, AR STECHEL, EB JENNISON, DR AF ORLANDO, TM BURNS, AR STECHEL, EB JENNISON, DR TI ELECTRON-STIMULATED PRODUCTION OF NO2(G) FROM O-2 COADSORBED WITH NO ON PT(111) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Note ID MOLECULAR-OXYGEN; DISSOCIATION; DESORPTION; SURFACE; PHOTOCHEMISTRY; SPECTROSCOPY; ADSORPTION; CO RP ORLANDO, TM (reprint author), SANDIA NATL LABS,DIV 1151,ALBUQUERQUE,NM 87185, USA. RI Stechel, Ellen/B-1253-2012 NR 24 TC 15 Z9 15 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 DEC 15 PY 1990 VL 93 IS 12 BP 9197 EP 9199 DI 10.1063/1.459211 PG 3 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA EP160 UT WOS:A1990EP16000093 ER PT J AU WILSON, C WALLACE, DWR AF WILSON, C WALLACE, DWR TI USING THE NUTRIENT RATIO NO PO AS A TRACER OF CONTINENTAL-SHELF WATERS IN THE CENTRAL ARCTIC-OCEAN SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID NANSEN-BASIN; CIRCULATION; OXYGEN; SEA; VENTILATION; PROFILES; MASSES AB Historical nitrate, phosphate, and dissolved oxygen data from the central Arctic Ocean are examined with particular emphasis on the conservative parameters NO (9 * NO3 + O2) and PO (135 * PO4 + O2). The NO/PO ratio is shown to increase with depth in the Canada Basin, being approximately 0.78 in Surface and Upper Halocline Waters and approximately 1.0 in the Atlantic Layer and Deep Waters. Lower Halocline Water is marked by NO and PO minima and intermediate NO/PO. NO/PO ratios from the Arctic shelf seas are examined to determine possible source regions for the various water masses. The NO/PO ratio of Canada Basin Deep Water implies an upper bound of approximately 11 % shelf water contribution to this water mass. A slight oxygen maximum core in the Lower Halocline Water is identified at a salinity of S = 34.5 in the vicinity of the Alpha Ridge. This core appears to be diminished by diapycnal mixing and does not extend into the Beaufort Gyre. RP WILSON, C (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV OCEANOG & ATMOSPHER SCI,UPTON,NY 11973, USA. RI Wilson, Cara/A-8816-2009; OI Wilson, Cara/0000-0001-9318-2322 NR 33 TC 39 Z9 43 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD DEC 15 PY 1990 VL 95 IS C12 BP 22193 EP 22208 DI 10.1029/JC095iC12p22193 PG 16 WC Oceanography SC Oceanography GA EP457 UT WOS:A1990EP45700007 ER PT J AU MIKAELIAN, KO AF MIKAELIAN, KO TI RAYLEIGH-TAYLOR AND RICHTMYER-MESHKOV INSTABILITIES IN MULTILAYER FLUIDS WITH SURFACE-TENSION SO PHYSICAL REVIEW A LA English DT Article ID STRATIFIED FLUIDS; GROWTH; MODEL AB Surface tension modifies the evolution of the Rayleigh-Taylor and the Richtmyer-Meshkov instabilities in fluids undergoing a constant acceleration or a shock, respectively. We analyze the general case of N fluids with arbitrary densities and surface tensions and derive the eigenvalue equation determining the growth rate of the perturbations. For N = 2 we recover the classical case of two semi-infinite fluids and extend it to the case of two finite-thickness fluids between fixed boundaries. The N = 2 case is studied in detail; we find universal modes that are independent of the thickness of the intermediate fluid, and we find how surface tension modifies Taylor's modes for a single fluid with free boundaries. We also analyze in detail recent and future two- or three-fluid experiments. Representing a shock as an impulsive acceleration we find that post-shock oscillations have frequencies and amplitudes that depend on the wave number k, leading to a nontrivial evolution for the spectrum of perturbations. Finally, we study turbulence at the interface between two fluids with surface tension and present specific predictions for the turbulent energy E(turbulent) as a function of the surface tension T(s). We propose new experiments, physical and/or numerical, to test our predictions. RP MIKAELIAN, KO (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 29 TC 30 Z9 30 U1 1 U2 11 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 DEC 15 PY 1990 VL 42 IS 12 BP 7211 EP 7225 DI 10.1103/PhysRevA.42.7211 PG 15 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA EP283 UT WOS:A1990EP28300024 ER PT J AU MUTO, V LOMDAHL, PS CHRISTIANSEN, PL AF MUTO, V LOMDAHL, PS CHRISTIANSEN, PL TI 2-DIMENSIONAL DISCRETE MODEL FOR DNA DYNAMICS - LONGITUDINAL-WAVE PROPAGATION AND DENATURATION SO PHYSICAL REVIEW A LA English DT Article ID CONSISTENT PHONON THEORY; HYDROGEN-BONDED SYSTEMS; BASE-ROTATOR MODEL; DOUBLE HELICES; SOLITARY EXCITATIONS; TOPOLOGICAL SOLITONS; ALPHA-HELIX; POLY(DG)-POLY(DC); TRANSCRIPTION; LATTICE AB In this paper, a simple, two-dimensional model of the deoxyribonucleic acid (DNA) is presented. In the model the two polynucleotide strands are linked together through the hydrogen bonds. The phosphodiester bridges in the backbone are described by the anharmonic potential of Toda kind, while the hydrogen bonds are described by the Lennard-Jones potential. Longitudinal wave propagation on ring-shaped DNA molecules is investigated. The model predicts a significant increase in the lifetime of the open states of the hydrogen bonds at physiological temperatures. Thus anharmonicity may play a role in DNA denaturation. C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545. RP MUTO, V (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545, USA. RI Christiansen, Peter /A-7978-2011 OI Christiansen, Peter /0000-0002-1465-9987 NR 37 TC 63 Z9 69 U1 0 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD DEC 15 PY 1990 VL 42 IS 12 BP 7452 EP 7458 DI 10.1103/PhysRevA.42.7452 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA EP283 UT WOS:A1990EP28300048 ER PT J AU KIM, CB KROMMES, JA AF KIM, CB KROMMES, JA TI RIGOROUS UPPER BOUND FOR TURBULENT ELECTROMOTIVE-FORCE IN REVERSED-FIELD PINCHES SO PHYSICAL REVIEW A LA English DT Note ID NUMERICAL-SIMULATION; PASSIVE ADVECTION; RELAXATION; TRANSPORT; PLASMA AB An upper bound is determined for the turbulently generated axial electromotive force in reversed-field pinches, constrained solely by energy conservation in the approximation of incompressible magnetohydrodynamics. The field reversal is predicted and comparisons are made with the minimum-energy state with the invariant magnetic helicity. C1 PRINCETON UNIV,PLASMA PHYS LAB,PRINCETON,NJ 08544. RP KIM, CB (reprint author), UNIV TEXAS,INST FUS STUDIES,AUSTIN,TX 78712, USA. NR 18 TC 20 Z9 20 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD DEC 15 PY 1990 VL 42 IS 12 BP 7487 EP 7490 DI 10.1103/PhysRevA.42.7487 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA EP283 UT WOS:A1990EP28300055 ER PT J AU YEH, CY CHEN, AB NICHOLSON, DM BUTLER, WH AF YEH, CY CHEN, AB NICHOLSON, DM BUTLER, WH TI FULL-POTENTIAL KORRINGA-KOHN-ROSTOKER BAND THEORY APPLIED TO THE MATHIEU POTENTIAL SO PHYSICAL REVIEW B LA English DT Article C1 OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37830. RP YEH, CY (reprint author), AUBURN UNIV,DEPT PHYS,AUBURN,AL 36849, USA. NR 22 TC 10 Z9 10 U1 0 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1990 VL 42 IS 17 BP 10976 EP 10982 DI 10.1103/PhysRevB.42.10976 PG 7 WC Physics, Condensed Matter SC Physics GA EM727 UT WOS:A1990EM72700017 ER PT J AU HORACHE, E FISCHER, JE RUCKMAN, MW AF HORACHE, E FISCHER, JE RUCKMAN, MW TI RESONANT PHOTOEMISSION-STUDY OF TERNARY TRANSITION-METAL SILICIDES SO PHYSICAL REVIEW B LA English DT Article C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. RP HORACHE, E (reprint author), UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104, USA. NR 39 TC 3 Z9 3 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1990 VL 42 IS 17 BP 11079 EP 11085 DI 10.1103/PhysRevB.42.11079 PG 7 WC Physics, Condensed Matter SC Physics GA EM727 UT WOS:A1990EM72700030 ER PT J AU WANG, CZ CHAN, CT HO, KM AF WANG, CZ CHAN, CT HO, KM TI TIGHT-BINDING MOLECULAR-DYNAMICS STUDY OF PHONON ANHARMONIC EFFECTS IN SILICON AND DIAMOND SO PHYSICAL REVIEW B LA English DT Article C1 IOWA STATE UNIV SCI & TECHNOL,MICROELECTR RES CTR,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011. RP WANG, CZ (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011, USA. NR 31 TC 128 Z9 128 U1 1 U2 13 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1990 VL 42 IS 17 BP 11276 EP 11283 DI 10.1103/PhysRevB.42.11276 PG 8 WC Physics, Condensed Matter SC Physics GA EM727 UT WOS:A1990EM72700056 ER PT J AU BROWER, KL AF BROWER, KL TI SOURCE OF O-17 HYPERFINE BROADENING OF THE PB RESONANCE ASSOCIATED WITH THE (111) SI-SIO2 INTERFACE SO PHYSICAL REVIEW B LA English DT Note RP BROWER, KL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1990 VL 42 IS 17 BP 11352 EP 11354 DI 10.1103/PhysRevB.42.11352 PG 3 WC Physics, Condensed Matter SC Physics GA EM727 UT WOS:A1990EM72700068 ER PT J AU MAGRI, R WEI, SH ZUNGER, A AF MAGRI, R WEI, SH ZUNGER, A TI GROUND-STATE STRUCTURES AND THE RANDOM-STATE ENERGY OF THE MADELUNG LATTICE SO PHYSICAL REVIEW B LA English DT Note RP MAGRI, R (reprint author), SOLAR ENERGY RES INST,GOLDEN,CO 80401, USA. RI Magri, Rita/O-5267-2016 OI Magri, Rita/0000-0003-2945-0374 NR 24 TC 117 Z9 118 U1 0 U2 7 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1098-0121 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1990 VL 42 IS 17 BP 11388 EP 11391 DI 10.1103/PhysRevB.42.11388 PG 4 WC Physics, Condensed Matter SC Physics GA EM727 UT WOS:A1990EM72700080 ER PT J AU SIGALAS, M BACALIS, NC PAPACONSTANTOPOULOS, DA MEHL, MJ SWITENDICK, AC AF SIGALAS, M BACALIS, NC PAPACONSTANTOPOULOS, DA MEHL, MJ SWITENDICK, AC TI TOTAL-ENERGY CALCULATIONS OF SOLID H, LI, NA, K, RB, AND CS SO PHYSICAL REVIEW B LA English DT Article ID LITHIUM; CRYSTAL; DENSITY AB Augmented-plane-wave calculations within the local-density approximation of the total energy of the solid alkali metals H, Li, Na, K, Rb, and Cs predict that except in Rb at T = O K the fcc structure is more stable than the bcc, which agrees with experiments for Li and Na. C1 NATL HELLENIC RES FDN, GR-11635 ATHENS, GREECE. USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. RP SIGALAS, M (reprint author), RES CTR CRETE, POB 527, GR-71110 HERAKLION, GREECE. RI Bacalis, Naoum/G-5327-2013; Mehl, Michael/H-8814-2016 OI Bacalis, Naoum/0000-0002-9565-0414; NR 19 TC 53 Z9 53 U1 0 U2 4 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 DEC 15 PY 1990 VL 42 IS 18 BP 11637 EP 11643 DI 10.1103/PhysRevB.42.11637 PG 7 WC Physics, Condensed Matter SC Physics GA EP284 UT WOS:A1990EP28400018 ER PT J AU KOLB, EW SALOPEK, DS TURNER, MS AF KOLB, EW SALOPEK, DS TURNER, MS TI ORIGIN OF DENSITY-FLUCTUATIONS IN EXTENDED INFLATION SO PHYSICAL REVIEW D LA English DT Article ID UNIVERSE SCENARIO; INVISIBLE AXION; PERTURBATIONS; GENERATION; COSMOLOGY; GRAVITY; CONSTRAINTS; FLATNESS; CREATION; HORIZON AB We calculate both the curvature and isocurvature density fluctuations that arise due to quantum fluctuations in a simple model of extended inflation based upon the Jordan-Brans-Dicke theory. The curvature fluctuations that arise due to quantum fluctuations in the Brans-Dicke field in general have a non-scale-invariant spectrum and an amplitude that is cosmologically acceptable and interesting without having to tune any coupling constant to a very small value. The curvature perturbations that arise due to the Higgs field are subdominant. If there are other massless fields in the theory, e.g., an axion or an ilion, then isocurvature fluctuations arise in these fields too. Production of gravitational waves and the massless particles associated with excitations of the Brans-Dicke field are also discussed. Several attempts at more realistic models of extended inflation are also analyzed. The importance of the Einstein conformal frame in calculating curvature fluctuations is emphasized. When viewed in this frame, extended inflation closely resembles slow-rollover inflation with an exponential potential, and the usual formula for the amplitude of curvature perturbations applies directly. C1 UNIV CHICAGO,ENRICO FERMI INST,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. RP KOLB, EW (reprint author), FERMI NATL ACCELERATOR LAB,CTR ASTROPHYS,NASA,BATAVIA,IL 60510, USA. NR 39 TC 86 Z9 86 U1 1 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD DEC 15 PY 1990 VL 42 IS 12 BP 3925 EP 3935 DI 10.1103/PhysRevD.42.3925 PG 11 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP278 UT WOS:A1990EP27800004 ER PT J AU SALOPEK, DS BOND, JR AF SALOPEK, DS BOND, JR TI NONLINEAR EVOLUTION OF LONG-WAVELENGTH METRIC FLUCTUATIONS IN INFLATIONARY MODELS SO PHYSICAL REVIEW D LA English DT Article ID QUANTUM COSMOLOGY; DENSITY PERTURBATIONS; UNIVERSE SCENARIO; GENERATION; GAUGE AB Stochastic inflation can be viewed as a sequence of two-step processes. In the first step a stochastic impulse from short-distance quantum fluctuations acts on long waves-the interaction. In the second step the long waves evolve semiclassically-the propagation. Both steps must be developed to address whether fluctuations for cosmic structure formation may be non-Gaussian. We describe a formalism for following the nonlinear propagation of long-wavelength metric and scalar-field fluctuations. We perform an expansion in spatial gradients of the Arnowitt-Deser-Misner equations and we retain only terms up to first order. At each point the fields obey evolution equations like those in a homogeneous universe, but now described by a local scale factor e-(alpha) and Hubble expansion rate H. However, the different points are joined together through the momentum constraint equation. The gradient expansion is appropriate for inflation if the long-wave fields are smoothed over scales below e(-alpha)H-1. Our equations are naturally described in the Einstein-Hamilton-Jacobi framework, which governs an ensemble of inhomogeneous universes, and which may be interpreted as a semiclassical approximation to the quantum theory. We find that the Hubble parameter, which is a function of the local values of the scalar field, obeys a separated Hamilton-Jacobi equation that also governs the semiclassical phase of the wave functional. In our approximation, time hypersurface changes leave the equations invariant. However, the stochastic impulses that change the field initial conditions are most simply given on uniform expansion factor hypersurfaces whereas propagation is most easily solved on uniform Hubble hypersurfaces, in terms of alpha(x(j),H), the nonlinear analog of zeta of linear perturbation theory; we therefore pay special attention to hypersurface shifting. In particular, we describe the transformation process for the fluctuation probability functional. Exact general solutions are found for the case of a single scalar field interacting through an exponential potential. For example, we show that quantum corrections to long-wavelength evolution of the metric are characteristically small using exact Green's-function solutions of the Wheeler-DeWitt equation for this potential. Approximate analytic solutions to our classical system for slowly evolving multiple scalar fields are also easy to obtain in this formalism, contrasting with previous numerical approaches. C1 UNIV TORONTO,CANADIAN INST THEORET ASTROPHYS,CANADIAN INST ADV RES PROGRAM,TORONTO M5S 1A1,ONTARIO,CANADA. RP SALOPEK, DS (reprint author), FERMI NATL ACCELERATOR LAB,CTR ASTROPHYS,NASA,POB 500,MS 209,BATAVIA,IL 60510, USA. NR 48 TC 613 Z9 615 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 DEC 15 PY 1990 VL 42 IS 12 BP 3936 EP 3962 DI 10.1103/PhysRevD.42.3936 PG 27 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP278 UT WOS:A1990EP27800005 ER PT J AU SUMIYOSHI, K KAJINO, T ALCOCK, CR MATHEWS, GJ AF SUMIYOSHI, K KAJINO, T ALCOCK, CR MATHEWS, GJ TI EVOLUTION OF BARYON NUMBER DENSITY DURING THE COSMIC QUARK-HADRON PHASE-TRANSITION SO PHYSICAL REVIEW D LA English DT Article ID CHROMOELECTRIC-FLUX-TUBE; STRANGE MATTER; EARLY UNIVERSE; NEUTRON DIFFUSION; PRIMORDIAL NUCLEOSYNTHESIS; EVAPORATION; FLUCTUATIONS; MODEL; QCD AB Recent calculations using a chromoelectric flux tube model have shown that the phase boundary between the quark-gluon plasma and the hadron gas may have a low baryon penetrability. The consequences of this result for the evolution of baryon number density during the QCD phase transition are explored, using a two-zone approximation. Very-high-amplitude baryon number density fluctuations result in a wide variety of cases; in some cases nuclear matter densities are approached, which might lead to the formation of strange matter. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,INST GEOPHYS & PLANETARY PHYS,LIVERMORE,CA 94550. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP SUMIYOSHI, K (reprint author), TOKYO METROPOLITAN UNIV,DEPT PHYS,SETAGAYA KU,TOKYO 158,JAPAN. NR 29 TC 30 Z9 31 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 DEC 15 PY 1990 VL 42 IS 12 BP 3963 EP 3968 DI 10.1103/PhysRevD.42.3963 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP278 UT WOS:A1990EP27800006 ER PT J AU MOTTOLA, E RABY, S AF MOTTOLA, E RABY, S TI BARYON-NUMBER DISSIPATION AT FINITE TEMPERATURE IN THE STANDARD MODEL SO PHYSICAL REVIEW D LA English DT Article ID ANOMALOUS ELECTROWEAK BARYON; WEINBERG-SALAM THEORY; NON-CONSERVATION; VIOLATION; ASYMMETRY; UNIVERSE; VACUUM AB We analyze the phenomenon of baryon-number violation at finite temperature in the standard model, and derive the relaxation rate for the baryon density in the high-temperature electroweak plasma. The relaxation rate gamma is given in terms of real-time correlation functions of the operator E.B, and is directly proportional to the sphaleron transition rate GAMMA: gamma proportional n(f) GAMMA/T3. Hence it is not instanton suppressed, as claimed by Cohen, Dugan, and Manohar (CDM). We show explicitly how this result is consistent with the methods of CDM, once it is recognized that a new anomalous commutator is required in their approach. C1 OHIO STATE UNIV,DEPT PHYS,COLUMBUS,OH 43210. RP MOTTOLA, E (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,T-8,MAIL STOP B285,LOS ALAMOS,NM 87545, USA. NR 34 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD DEC 15 PY 1990 VL 42 IS 12 BP 4202 EP 4208 DI 10.1103/PhysRevD.42.4202 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP278 UT WOS:A1990EP27800032 ER PT J AU KIRITSIS, EB PAPAVASSILIOU, J AF KIRITSIS, EB PAPAVASSILIOU, J TI ALTERNATIVE LARGE-N LIMIT FOR QCD AND ITS IMPLICATIONS FOR LOW-ENERGY NUCLEAR PHENOMENA SO PHYSICAL REVIEW D LA English DT Article ID SYMMETRY-BREAKING; QUANTUM CHROMODYNAMICS; FIELD-THEORIES; 1-N EXPANSION; MODEL; INSTANTONS AB The Corrigan-Ramond model for large-N QCD is analyzed in detail. The spectrum, leading-order results for interactions, and an effective Lagrangian describing large-N interactions are derived. This Lagrangian, when quantized, provides an effective quantum field theory for mesons and baryons. The applicability of such a theory to low-energy nuclear phenomena is studied. The model has features that distinguish it clearly from standard large-N QCD. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,THEORET PHYS GRP,BERKELEY,CA 94720. UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024. RP KIRITSIS, EB (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. RI Kiritsis, Elias/F-3501-2011; Papavassiliou, Joannis/K-3973-2014 OI Papavassiliou, Joannis/0000-0003-3958-8174 NR 29 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 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD DEC 15 PY 1990 VL 42 IS 12 BP 4238 EP 4247 DI 10.1103/PhysRevD.42.4238 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP278 UT WOS:A1990EP27800036 ER PT J AU BEALL, JR AF BEALL, JR TI SPECIAL ISSUE - PRAGMATICS OF RISK ASSESSMENT AS ILLUSTRATED WITH ACRYLONITRILE REPORT OF THE 2ND WORKSHOP - INTRODUCTION SO SCIENCE OF THE TOTAL ENVIRONMENT LA English DT Editorial Material RP BEALL, JR (reprint author), US DOE,GOVT TOXICOL,ER-72,GTN,WASHINGTON,DC 20545, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0048-9697 J9 SCI TOTAL ENVIRON JI Sci. Total Environ. PD DEC 15 PY 1990 VL 99 IS 3 BP 219 EP 222 PG 4 WC Environmental Sciences SC Environmental Sciences & Ecology GA EQ987 UT WOS:A1990EQ98700002 PM 2077654 ER PT J AU POPE, LE JERVIS, TR NASTASI, M AF POPE, LE JERVIS, TR NASTASI, M TI EFFECTS OF LASER PROCESSING AND DOPING ON THE LUBRICATION AND CHEMICAL-PROPERTIES OF THIN MOS2 FILMS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article C1 UNIV CALIF LOS ALAMOS SCI LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545. RP POPE, LE (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 23 TC 13 Z9 14 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 15 PY 1990 VL 42 IS 3 BP 217 EP 225 DI 10.1016/0257-8972(90)90154-5 PG 9 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EM652 UT WOS:A1990EM65200002 ER PT J AU WANG, BQ GENG, GQ LEVY, AV AF WANG, BQ GENG, GQ LEVY, AV TI SURFACE BEHAVIOR OF HEAT-EXCHANGER TUBES IN FLUIDIZED-BED COMBUSTORS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article RP WANG, BQ (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 10 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 15 PY 1990 VL 42 IS 3 BP 253 EP 274 DI 10.1016/0257-8972(90)90157-8 PG 22 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EM652 UT WOS:A1990EM65200005 ER PT J AU HU, R FENSKE, GR REHN, LE BALDO, PM ERDEMIR, A LEE, RH ERCK, RA AF HU, R FENSKE, GR REHN, LE BALDO, PM ERDEMIR, A LEE, RH ERCK, RA TI TRIBOLOGICAL PERFORMANCE OF ION-BEAM-MIXED FE/B MULTILAYERS ON M50 STEEL SO SURFACE & COATINGS TECHNOLOGY LA English DT Article C1 ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. NR 14 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 15 PY 1990 VL 42 IS 3 BP 283 EP 297 DI 10.1016/0257-8972(90)90159-A PG 15 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EM652 UT WOS:A1990EM65200007 ER PT J AU ABOUELFOTOUH, F MATSON, RJ BAKRY, AM KAZMERSKI, LL AF ABOUELFOTOUH, F MATSON, RJ BAKRY, AM KAZMERSKI, LL TI STUDY OF THE INTERFACE PROPERTIES OF CUINSE2 SINGLE-CRYSTAL HETEROJUNCTIONS AND SCHOTTKY BARRIERS SO THIN SOLID FILMS LA English DT Article ID SOLAR-CELLS AB High resolution photoluminescence measurements performed at different excitation powers and different temperatures (7.8-90 K) are used to identify the origin and location of the various defect levels in single-crystal CuInSe2. Extrinsic radiative recombination surface states resulting from surface and heat treatments during the device fabrication steps have been determined. The correlation between the type and relative concentration of the intrinsic defect states dominating a particular surface of the material and the junction characteristic of the devices fabricated on that surface are noted. RP ABOUELFOTOUH, F (reprint author), SOLAR ENERGY RES INST,1617 COLE BLVD,GOLDEN,CO 80401, USA. NR 21 TC 5 Z9 5 U1 0 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD DEC 15 PY 1990 VL 193 IS 1-2 BP 769 EP 776 DI 10.1016/0040-6090(90)90229-7 PG 8 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA EQ610 UT WOS:A1990EQ61000023 ER PT J AU JANKOWSKI, AF PERRY, PL AF JANKOWSKI, AF PERRY, PL TI MICROSTRUCTURE OF AU/NB MULTILAYERS SO THIN SOLID FILMS LA English DT Article ID SUPERLATTICES; MODULUS; STRAIN AB Au/Nb multilayers are prepared using magnetron sputter deposition. The close-packed orientation of the thin films is revealed using X-ray diffraction. Although in bulk form Au(111) and Nb(110) have a near zero lattice misfit, the average lattice spacing of the multilayer is found to vary as a function of the repeat period in the direction of the composition modulation. Similar lattice distortions of the multilayer structure are known for f.c.c./f.c.c. metallic superlattices, such as Au/Ni. Lattice imaging of the Au/Nb multilayers, in cross-section, provides a direct means to complete an initial characterization of the atomic rearrangements in the modulation direction. RP JANKOWSKI, AF (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 17 TC 5 Z9 5 U1 1 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD DEC 15 PY 1990 VL 193 IS 1-2 BP 799 EP 806 DI 10.1016/0040-6090(90)90233-4 PG 8 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA EQ610 UT WOS:A1990EQ61000027 ER PT J AU HUFFMAN, M GORAL, JP ALJASSIM, MM MASON, AR JONES, KM AF HUFFMAN, M GORAL, JP ALJASSIM, MM MASON, AR JONES, KM TI COMPOSITIONAL AND MICROSTRUCTURAL CHARACTERIZATION OF THIN-FILM LEAD ZIRCONATE TITANATE FERROELECTRICS SO THIN SOLID FILMS LA English DT Article AB Recent interest in this film lead zirconate titanate (PZT) ferroelectrics has been intensified by the possible applications of these materials to non-volatile random access memory devices. In general, these thin films have different properties when compared with bulk ceramics of the same composition (Zr:Ti ranging from 48:52 to 30:70). We have begun investigation the composition and microstructure of sputtered submicron PZT films via electron probe microanalysis (EPMA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Bulk analysis of various films (EPMA) shows reasonable agreement with the composition of the target (especially Zr:Ti ratios). SEM illustrates a variety of microstructures which primarily depend on target material, sputtering conditions and substrate morphology. PLan-view TEM has been used to investigate the grain orientation and morphology of the ferroelectric films. Grain size for PZT varies considerably from tens of nanometers to several hundred nanometers. The grain size depends on the composition of the films and the sputtering conditions. Cross-sectional TEM samples are being studied to determine the degree of abruptness of the various heterointerfaces in a device structure. C1 SOLAR ENERGY RES INST,GOLDEN,CO 80401. RP HUFFMAN, M (reprint author), RAMTRON CORP,1850 RAMTRON DR,COLORADO SPRINGS,CO 80921, USA. NR 11 TC 12 Z9 12 U1 1 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD DEC 15 PY 1990 VL 193 IS 1-2 BP 1017 EP 1022 DI 10.1016/0040-6090(90)90257-E PG 6 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA EQ610 UT WOS:A1990EQ61000051 ER PT J AU AMES, BN GOLD, LS AF AMES, BN GOLD, LS TI CARCINOGENESIS DEBATE SO SCIENCE LA English DT Letter C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CARCINOGEN POTENCY DATABASE,BERKELEY,CA 94720. RP AMES, BN (reprint author), UNIV CALIF BERKELEY,DEPT MOLEC & CELL BIOL,BERKELEY,CA 94720, USA. NR 5 TC 17 Z9 17 U1 0 U2 0 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 14 PY 1990 VL 250 IS 4987 BP 1498 EP 1499 DI 10.1126/science.250.4987.1498-c PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EM931 UT WOS:A1990EM93100005 PM 2274775 ER PT J AU KLEIN, T PRAUSNITZ, JM AF KLEIN, T PRAUSNITZ, JM TI PHASE-BEHAVIOR OF REVERSE MICELLES IN COMPRESSED PROPANE AT 35-DEGREES-C AND PRESSURES TO 30 MPA - SOLUBILIZATION OF POLY(ETHYLENE GLYCOL) SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, DIV MAT & CHEM SCI, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, DEPT CHEM ENGN, BERKELEY, CA 94720 USA. NR 33 TC 14 Z9 14 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD DEC 13 PY 1990 VL 94 IS 25 BP 8811 EP 8816 DI 10.1021/j100388a013 PG 6 WC Chemistry, Physical SC Chemistry GA EM664 UT WOS:A1990EM66400013 ER PT J AU ITOH, K HOLROYD, R AF ITOH, K HOLROYD, R TI EFFECT OF PRESSURE ON THE ELECTRON-MOBILITY IN LIQUID BENZENE AND TOLUENE SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 25 TC 28 Z9 28 U1 1 U2 3 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 DEC 13 PY 1990 VL 94 IS 25 BP 8850 EP 8854 DI 10.1021/j100388a020 PG 5 WC Chemistry, Physical SC Chemistry GA EM664 UT WOS:A1990EM66400020 ER PT J AU ITOH, K HOLROYD, R AF ITOH, K HOLROYD, R TI ELECTRON-ATTACHMENT TO BENZENE AND TOLUENE IN NONPOLAR-SOLVENTS AT HIGH-PRESSURE SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article C1 BROOKHAVEN NATL LAB,DEPT CHEM,UPTON,NY 11973. NR 14 TC 20 Z9 20 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 DEC 13 PY 1990 VL 94 IS 25 BP 8854 EP 8857 DI 10.1021/j100388a021 PG 4 WC Chemistry, Physical SC Chemistry GA EM664 UT WOS:A1990EM66400021 ER PT J AU ELLIS, J KARLINER, M SCHRAMM, DN AF ELLIS, J KARLINER, M SCHRAMM, DN TI BARYONS IN COSMIC-RAY SHOWERS AND THE INTERACTION DEPTH SO PHYSICS LETTERS B LA English DT Article ID E+E ANNIHILATION; TOPOLOGICAL MODEL; CROSS-SECTIONS AB Guided by a topological model of baryon production in high-energy collisions, we consider the qualitative effect of secondary baryon production in cosmic ray showers. We argue that the smaller range of baryons, relative to mesons, will tend to reduce the depth of the shower maximum X(max) without reducing the variation in this observable. This effect could reduce significantly the discrepancy between the Fly's Eye data and existing cosmic ray shower Monte Carlo models for incoming protons, and we argue that this effect is unlikely to be washed out by the baryon energy spectrum being soft. We also comment on the likelihood of baryon-rich events mimicking the Centauro data. C1 TEL AVIV UNIV,SCH PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL. UNIV CHICAGO,CHICAGO,IL 60637. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RP ELLIS, J (reprint author), CERRO TOLOLO INTERAMER OBSERV,LA SERENA,CHILE. NR 17 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD DEC 13 PY 1990 VL 252 IS 2 BP 282 EP 286 DI 10.1016/0370-2693(90)90873-5 PG 5 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP554 UT WOS:A1990EP55400016 ER PT J AU SPANGLER, EA ANDREWS, KA RUBIN, EM AF SPANGLER, EA ANDREWS, KA RUBIN, EM TI DEVELOPMENTAL REGULATION OF THE HUMAN ZETA-GLOBIN GENE IN TRANSGENIC MICE SO NUCLEIC ACIDS RESEARCH LA English DT Article ID LOCUS ACTIVATION REGION; BETA-GLOBIN; HUMAN-FETAL; HYPERSENSITIVE SITE; ERYTHROID-CELLS; EXPRESSION AB We have characterized the expression of the human zeta (zeta) gene, which encodes an embryonic alpha-like globin, in transgenic mice. We find that a 777 base pair fragment spanning erythroid specific hypersensitive site II (HSll) from the distal 5. region of the human beta-globin gene cluster potentiates expression of the zeta-globin. In the absence of the HSII fragment, no zeta-expression is observed. Expression of the human zeta-gene in mice parallels expression of a murine embryonic alpha-like globin gene (x). Thus, expression of the human zeta-gene in mice requires linkage to an erythroid-specific enhancer sequence, but the presence of the enhancer does not affect the developmental regulation of the transgene. Our results indicate that the factors involved in switching from embryonic to adult alpha-globin gene expression during development are evolutionarily conserved, and suggest that the transgenic mouse is an in vivo system in which the requirements for the developmental switch in alpha-globin gene expression can be analyzed in detail. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CELL & MOLEC BIOL,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV RES MED,BERKELEY,CA 94720. FU NHLBI NIH HHS [HL07279, HL20985] NR 29 TC 18 Z9 18 U1 0 U2 0 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 DEC 11 PY 1990 VL 18 IS 23 BP 7093 EP 7097 DI 10.1093/nar/18.23.7093 PG 5 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA EP140 UT WOS:A1990EP14000048 PM 2263468 ER PT J AU GRADY, DL ROBINSON, DL HILDEBRAND, CE AF GRADY, DL ROBINSON, DL HILDEBRAND, CE TI GENOMIC SEQUENCE OF THE CHINESE-HAMSTER MT-I GENE SO NUCLEIC ACIDS RESEARCH LA English DT Note ID METALLOTHIONEIN RP GRADY, DL (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,GENET GRP,LOS ALAMOS,NM 87545, USA. NR 3 TC 4 Z9 5 U1 0 U2 0 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 DEC 11 PY 1990 VL 18 IS 23 BP 7149 EP 7149 DI 10.1093/nar/18.23.7149 PG 1 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA EP140 UT WOS:A1990EP14000069 PM 2263484 ER PT J AU MAO, XL RUSSO, RE LIU, HB HO, JC AF MAO, XL RUSSO, RE LIU, HB HO, JC TI AS-DEPOSITED SB-DOPED BI-PB-SR-CA-CU-O THIN-FILMS PREPARED BY PULSED LASER DEPOSITION SO APPLIED PHYSICS LETTERS LA English DT Article C1 WICHITA STATE UNIV,DEPT PHYS,WICHITA,KS 67208. WICHITA STATE UNIV,DEPT CHEM,WICHITA,KS 67208. WICHITA STATE UNIV,NATL INST AVIAT RES,WICHITA,KS 67208. RP MAO, XL (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV APPL SCI,BERKELEY,CA 94720, USA. NR 16 TC 19 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 DEC 10 PY 1990 VL 57 IS 24 BP 2591 EP 2593 DI 10.1063/1.103824 PG 3 WC Physics, Applied SC Physics GA EL853 UT WOS:A1990EL85300026 ER PT J AU SHI, DG FANG, MM AKUJIEZE, J XU, M CHEN, JG SEGRE, C AF SHI, DG FANG, MM AKUJIEZE, J XU, M CHEN, JG SEGRE, C TI HIGH CRITICAL CURRENT-DENSITY IN GRAIN-ORIENTED BULK YBA2CU3OX PROCESSED BY PARTIAL MELT GROWTH SO APPLIED PHYSICS LETTERS LA English DT Article RP SHI, DG (reprint author), ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439, USA. RI Segre, Carlo/B-1548-2009 OI Segre, Carlo/0000-0001-7664-1574 NR 16 TC 27 Z9 27 U1 0 U2 1 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 DEC 10 PY 1990 VL 57 IS 24 BP 2606 EP 2608 DI 10.1063/1.104188 PG 3 WC Physics, Applied SC Physics GA EL853 UT WOS:A1990EL85300031 ER PT J AU IMAMURA, JN KRISTIAN, J MIDDLEDITCH, J STEIMANCAMERON, TY AF IMAMURA, JN KRISTIAN, J MIDDLEDITCH, J STEIMANCAMERON, TY TI THE 8 2ND OPTICAL QUASI-PERIODIC OSCILLATIONS IN GX 339-4 SO ASTROPHYSICAL JOURNAL LA English DT Article C1 UNIV OREGON,DEPT PHYS,EUGENE,OR 97403. OBSERV CARNEGIE INST WASHINGTON,PASADENA,CA 91101. UNIV CALIF LOS ALAMOS SCI LAB,COMP RES GRP,LOS ALAMOS,NM 87545. NASA,AMES RES CTR,THEORET STUDIES BRANCH,MOFFETT FIELD,CA 94035. RP IMAMURA, JN (reprint author), UNIV OREGON,INST THEORET SCI,EUGENE,OR 97403, USA. NR 16 TC 21 Z9 21 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1990 VL 365 IS 1 BP 312 EP 316 DI 10.1086/169484 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA EK729 UT WOS:A1990EK72900032 ER PT J AU MONTEMAYOR, ME FAHRBACH, SE GIOMETTI, CS ROY, EJ AF MONTEMAYOR, ME FAHRBACH, SE GIOMETTI, CS ROY, EJ TI CHARACTERIZATION OF A PROTEIN THAT APPEARS IN THE NERVOUS-SYSTEM OF THE MOTH MANDUCA-SEXTA COINCIDENT WITH NEURONAL DEATH SO FEBS LETTERS LA English DT Article DE NEURONAL DEATH; GEL ELECTROPHORESIS, 2-D; CELL DEATH; METAMORPHOSIS; PROTEIN SYNTHESIS; ABDOMINAL GANGLIA; MANDUCA-SEXTA ID PROGRAMMED CELL-DEATH; 2-DIMENSIONAL ANALYSIS; GEL-ELECTROPHORESIS; TOBACCO HORNWORM; TISSUE PROTEINS; FRACTIONS; GANGLIA; SERUM AB Two-dimensional gel electrophoresis was used to locate potential neuronal death-related proteins in the moth Manduca sexta. Protein patterns of ganglia of pharate adult moths (taken prior to adult ecdysis) compared with protein patterns of one-day-old adults revealed reproducible changes in protein patterns. An acidic protein of approximately 40 000 Da was present in all samples from adult moths undergoing neuronal death and essentially absent from pharate adult samples. C1 UNIV ILLINOIS,DEPT PSYCHOL,NEUROSCI PROGRAM,603 E DANIEL ST,CHAMPAIGN,IL 61820. UNIV ILLINOIS,DEPT ENTOMOL,CHAMPAIGN,IL 61820. ARGONNE NATL LAB,DIV BIOL & MED RES,ARGONNE,IL 60439. FU NIMH NIH HHS [5 P32T32 MH18412] NR 28 TC 13 Z9 13 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0014-5793 J9 FEBS LETT JI FEBS Lett. PD DEC 10 PY 1990 VL 276 IS 1-2 BP 219 EP 222 DI 10.1016/0014-5793(90)80546-U PG 4 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA EP342 UT WOS:A1990EP34200055 PM 2265704 ER PT J AU GRAY, LJ LUTZ, E AF GRAY, LJ LUTZ, E TI ON THE TREATMENT OF CORNERS IN THE BOUNDARY ELEMENT METHOD SO JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS LA English DT Article C1 BERGEN SCI CTR,N-5008 BERGEN,NORWAY. OAK RIDGE NATL LAB,DIV ENGN PHYS & MATH,MATH SCI SECT,OAK RIDGE,TN 37831. CORNELL UNIV,DEPT COMP SCI,ITHACA,NY 14853. CORNELL UNIV,PROGRAM COMP GRAPH,ITHACA,NY 14853. NR 19 TC 34 Z9 34 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-0427 J9 J COMPUT APPL MATH JI J. Comput. Appl. Math. PD DEC 10 PY 1990 VL 32 IS 3 BP 369 EP 386 DI 10.1016/0377-0427(90)90043-Y PG 18 WC Mathematics, Applied SC Mathematics GA EM786 UT WOS:A1990EM78600003 ER PT J AU SCHMICKLER, W AF SCHMICKLER, W TI ON THE POSSIBILITY OF MEASURING THE ADSORBATE DENSITY OF STATES WITH A SCANNING TUNNELING MICROSCOPE SO JOURNAL OF ELECTROANALYTICAL CHEMISTRY LA English DT Note ID CHARGE-TRANSFER; ELECTROSORPTION VALENCY; SURFACE; DEPENDENCE; ADSORPTION; MODEL C1 BROOKHAVEN NATL LAB,DEPT APPL SCI,UPTON,NY 11973. NR 18 TC 33 Z9 33 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-0728 J9 J ELECTROANAL CHEM JI J. Electroanal. Chem. PD DEC 10 PY 1990 VL 296 IS 1 BP 283 EP 289 DI 10.1016/0022-0728(90)87252-F PG 7 WC Chemistry, Analytical; Electrochemistry SC Chemistry; Electrochemistry GA EN742 UT WOS:A1990EN74200024 ER PT J AU WILLIAMS, Q KNITTLE, E REICHLIN, R MARTIN, S JEANLOZ, R AF WILLIAMS, Q KNITTLE, E REICHLIN, R MARTIN, S JEANLOZ, R TI STRUCTURAL AND ELECTRONIC-PROPERTIES OF FE2SIO4-FAYALITE AT ULTRAHIGH PRESSURES - AMORPHIZATION AND GAP CLOSURE SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Review C1 UNIV CALIF SANTA CRUZ,EARTH SCI BOARD,SANTA CRUZ,CA 95064. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY,CA 94720. RP WILLIAMS, Q (reprint author), UNIV CALIF SANTA CRUZ,INST TECTON,SANTA CRUZ,CA 95064, USA. NR 110 TC 77 Z9 77 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21549 EP 21563 DI 10.1029/JB095iB13p21549 PG 15 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700016 ER PT J AU HESTIR, K LONG, JCS AF HESTIR, K LONG, JCS TI ANALYTICAL EXPRESSIONS FOR THE PERMEABILITY OF RANDOM 2-DIMENSIONAL POISSON FRACTURE NETWORKS BASED ON REGULAR LATTICE PERCOLATION AND EQUIVALENT MEDIA THEORIES SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV EARTH SCI,LIVERMORE,CA 94550. RP HESTIR, K (reprint author), NEW MEXICO STATE UNIV,DEPT MATH SCI,LAS CRUCES,NM 88003, USA. NR 23 TC 86 Z9 91 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21565 EP 21581 DI 10.1029/JB095iB13p21565 PG 17 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700017 ER PT J AU KRANZ, RL SATOH, T NISHIZAWA, O KUSUNOSE, K TAKAHASHI, M MASUDA, K HIRATA, A AF KRANZ, RL SATOH, T NISHIZAWA, O KUSUNOSE, K TAKAHASHI, M MASUDA, K HIRATA, A TI LABORATORY STUDY OF FLUID PRESSURE DIFFUSION IN ROCK USING ACOUSTIC EMISSIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article C1 UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544. GEOL SURVEY JAPAN,TSUKUBA,JAPAN. NAGOYA UNIV,NAGOYA,AICHI 464,JAPAN. HOKKAIDO UNIV,SAPPORO,HOKKAIDO 060,JAPAN. NR 28 TC 12 Z9 12 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21593 EP 21607 DI 10.1029/JB095iB13p21593 PG 15 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700019 ER PT J AU SHANKLAND, TJ ANDERSON, OL YOUNG, D AF SHANKLAND, TJ ANDERSON, OL YOUNG, D TI IRONWORKERS CONVENTION I - WORKSHOP ON PHYSICS OF IRON SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article C1 UNIV CALIF LOS ALAMOS SCI LAB,INST GEOPHYS & PLANETARY PHYS,LOS ALAMOS,NM 87544. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. RP SHANKLAND, TJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,GEOPHYS GRP,MSD447,LOS ALAMOS,NM 87544, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21689 EP 21690 DI 10.1029/JB095iB13p21689 PG 2 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700025 ER PT J AU ROSS, M YOUNG, DA GROVER, R AF ROSS, M YOUNG, DA GROVER, R TI THEORY OF THE IRON PHASE-DIAGRAM AT EARTH CORE CONDITIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article RP ROSS, M (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,MSC-299,LIVERMORE,CA 94550, USA. NR 19 TC 63 Z9 65 U1 0 U2 4 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21713 EP 21716 DI 10.1029/JB095iB13p21713 PG 4 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700029 ER PT J AU GROVER, R AF GROVER, R TI EXPERIMENTAL AND THEORETICAL CONSTRAINTS ON THE IRON EQUATION OF STATE SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article RP GROVER, R (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. NR 10 TC 7 Z9 7 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21743 EP 21748 DI 10.1029/JB095iB13p21743 PG 6 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700034 ER PT J AU NELLIS, WJ YOO, CS AF NELLIS, WJ YOO, CS TI ISSUES CONCERNING SHOCK TEMPERATURE-MEASUREMENTS OF IRON AND OTHER METALS SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article RP NELLIS, WJ (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT PHYS,DIV H,LIVERMORE,CA 94550, USA. NR 20 TC 31 Z9 40 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21749 EP 21752 DI 10.1029/JB095iB13p21749 PG 4 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700035 ER PT J AU MCQUEEN, RG ISAAK, DG AF MCQUEEN, RG ISAAK, DG TI CHARACTERIZING WINDOWS FOR SHOCK-WAVE RADIATION STUDIES SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article C1 UNIV CALIF LOS ANGELES,DEPT EARTH & SPACE PHYS,LOS ANGELES,CA 90024. RP MCQUEEN, RG (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 13 TC 23 Z9 27 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21753 EP 21765 DI 10.1029/JB095iB13p21753 PG 13 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700036 ER PT J AU FERRAZZINI, V CHOUET, B FEHLER, M AKI, K AF FERRAZZINI, V CHOUET, B FEHLER, M AKI, K TI QUANTITATIVE-ANALYSIS OF LONG-PERIOD EVENTS RECORDED DURING HYDROFRACTURE EXPERIMENTS AT FENTON HILL, NEW-MEXICO SO JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS LA English DT Article C1 US GEOL SURVEY,MENLO PK,CA 94025. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP FERRAZZINI, V (reprint author), UNIV SO CALIF,DEPT GEOL SCI,LOS ANGELES,CA 90089, USA. RI Ferrazzini, Valerie/E-8032-2017 OI Ferrazzini, Valerie/0000-0001-7908-1429 NR 29 TC 35 Z9 35 U1 1 U2 6 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-SOLID PD DEC 10 PY 1990 VL 95 IS B13 BP 21871 EP 21884 DI 10.1029/JB095iB13p21871 PG 14 WC Geosciences, Multidisciplinary SC Geology GA EN177 UT WOS:A1990EN17700043 ER PT J AU KALIKA, DS SHEN, MR YU, XM DENN, MM IANNELLI, P MASCIOCCHI, N YOON, DY PARRISH, W FRIEDRICH, C NOEL, C AF KALIKA, DS SHEN, MR YU, XM DENN, MM IANNELLI, P MASCIOCCHI, N YOON, DY PARRISH, W FRIEDRICH, C NOEL, C TI STRUCTURAL, DIELECTRIC, AND RHEOLOGICAL CHARACTERIZATION OF A THERMOTROPIC POLYESTER DISPLAYING SMECTIC-A, NEMATIC, AND ISOTROPIC PHASES SO MACROMOLECULES LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720. UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120. ECOLE SUPER PHYS & CHIM IND,PHYS CHIM STRUCT & MACROMOLEC LAB,F-75231 PARIS 05,FRANCE. RI Masciocchi, Norberto/K-4400-2015 OI Masciocchi, Norberto/0000-0001-9921-2350 NR 32 TC 20 Z9 20 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD DEC 10 PY 1990 VL 23 IS 25 BP 5192 EP 5200 DI 10.1021/ma00227a005 PG 9 WC Polymer Science SC Polymer Science GA EM335 UT WOS:A1990EM33500005 ER PT J AU TANGARI, C ULLMAN, R KING, JS WIGNALL, GD AF TANGARI, C ULLMAN, R KING, JS WIGNALL, GD TI SMALL-ANGLE NEUTRON-SCATTERING FROM BIMODAL MELTS OF POLYSTYRENE SO MACROMOLECULES LA English DT Article C1 UNIV MICHIGAN,DEPT NUCL ENGN,ANN ARBOR,MI 48109. OAK RIDGE NATL LAB,NATL CTR SMALL ANGLE SCATTERING RES,OAK RIDGE,TN 37830. OI Wignall, George/0000-0002-3876-3244 NR 14 TC 7 Z9 7 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD DEC 10 PY 1990 VL 23 IS 25 BP 5266 EP 5269 DI 10.1021/ma00227a014 PG 4 WC Polymer Science SC Polymer Science GA EM335 UT WOS:A1990EM33500014 ER PT J AU PALMER, FL KIRBY, RE KING, FK GARWIN, EL AF PALMER, FL KIRBY, RE KING, FK GARWIN, EL TI OXIDE OVERLAYERS AND THE SUPERCONDUCTING RF PROPERTIES OF YTTRIUM-PROCESSED HIGH-PURITY NB SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID MICROWAVE SURFACE-RESISTANCE; NIOBIUM; OXIDATION; OXYGEN; NITROGEN; CR2O3; XPS AB Superconducting rf surface resistance measurements were made on oxidized Nb cavities that had been warmed for a few minutes to temperatures between 250 and 300-degrees-C. Warmed oxide layers were further studied using X-ray photoelectron spectroscopy, Auger electron spectroscopy and secondary electron emission yield measurements. Warming usually reduced the temperature-dependent (BCS) part of the surface resistance by 10-20% while, for warming temperatures near 300-degrees-C, the low-temperature residual surface resistance increased by as much as 70 n-OMEGA. Surface spectroscopy measurements showed that, at temperatures between 200 and 250-degrees-C, the oxide layer was chemically altered but remained surface-segregated; between 250 and 300-degrees-C, however, surface oxygen dissolved into the Nb bulk. Changes in the BCS resistance were consistent with a model based on a shortening of the electron mean free path by oxygen that had diffused into the Nb metal and based on the theoretical dependence of BCS resistance on electron mean free path. No specific cause for the increased residual resistance could be positively identified, although oxygen-induced surface roughening is a possibility. C1 CORNELL UNIV,NEWMAN LAB NUCL STUDIES,ITHACA,NY 14853. STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. NR 25 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 10 PY 1990 VL 297 IS 3 BP 321 EP 328 DI 10.1016/0168-9002(90)91314-2 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EU074 UT WOS:A1990EU07400001 ER PT J AU AMOS, NA BROSS, AD LUNDIN, MC AF AMOS, NA BROSS, AD LUNDIN, MC TI OPTICAL ATTENUATION LENGTH MEASUREMENTS OF SCINTILLATING FIBERS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB We present data on optical attenuation length measurements of plastic scintillating fiber and show how the photodetector response as a function of wavelength can affect these measurements. In addition, we show that light propagation in stepped-index optical fiber is characterized by two distinct components. RP AMOS, NA (reprint author), FERMI NATL ACCELERATOR LAB,PARTICLE DETECTOR GRP,BATAVIA,IL 60510, USA. OI Lundin, Mark/0000-0001-5936-7649 NR 1 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 10 PY 1990 VL 297 IS 3 BP 396 EP 403 DI 10.1016/0168-9002(90)91321-2 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EU074 UT WOS:A1990EU07400008 ER PT J AU PRUNEAU, CA BALL, GC DMYTRENKO, P HAGBERG, E HORN, D STEER, MG WALKER, RB WHAN, T RIOUX, C ROY, R STPIERRE, C DRAKE, TE GALINDOURIBARRI, A AF PRUNEAU, CA BALL, GC DMYTRENKO, P HAGBERG, E HORN, D STEER, MG WALKER, RB WHAN, T RIOUX, C ROY, R STPIERRE, C DRAKE, TE GALINDOURIBARRI, A TI NEW AND IMPROVED PHOSWICH DETECTORS MANUFACTURED BY A HEAT PRESS TECHNIQUE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article ID IDENTIFICATION; SYSTEM; ARRAY; BALL AB A technique has been developed to produce plastic scintillator phoswich detectors with large areas, thin DELTA-E layers with thickness uniformity better than 3%, and no "dead" layer between the DELTA-E and E scintillators. A good signal separation for hydrogen isotopes and for elements with Z = 1 to 11 has been demonstrated in two different tests with a DELTA-E layer as thin as 0.7 mm. The elemental resolution most probably extends beyond Z = 11. The light-particle energy threshold of such a phoswich detector is only 7.5 MeV/u, ideal for reaction studies in the 10-40 MeV/u energy range available at the TASCC (Tandem Accelerator and SuperConducting Cyclotron) facility at Chalk River Nuclear Laboratories. C1 BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973. UNIV LAVAL,DEPT PHYS,ST FOY G1K 7P4,QUEBEC,CANADA. ATOM ENERGY CANADA LTD,CHALK RIVER NUCL LABS,CHALK RIVER K0J 1J0,ONTARIO,CANADA. UNIV TORONTO,DEPT PHYS,TORONTO M5S 1A7,ONTARIO,CANADA. NR 7 TC 21 Z9 21 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 10 PY 1990 VL 297 IS 3 BP 404 EP 409 DI 10.1016/0168-9002(90)91322-3 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EU074 UT WOS:A1990EU07400009 ER PT J AU ANTICH, P ATAC, M CHANEY, R CHRISMAN, D CLINE, D FENYVES, E PARK, J AF ANTICH, P ATAC, M CHANEY, R CHRISMAN, D CLINE, D FENYVES, E PARK, J TI DEVELOPMENT OF A HIGH-RESOLUTION SCINTILLATING FIBER GAMMA-RAY TELESCOPE SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article AB We report on the initial development and testing of a Compton telescope that is composed of scintillating fibers and position sensitive photomultipliers. Initial tests of the telescope result in a 17.5 mrad (rms) angular resolution for 1.2 MeV photons from a collimated Co-60 gamma source. This type of device can be used for constructing large area telescopes for gamma ray astronomy. The results from the prototype arrangement suggest that angular resolutions better than 4 mrad (rms) at 1.2 MeV and 1 mrad (rms) at 5 MeV may be obtainable by reducing all possible systematic errors. C1 FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV TEXAS,DEPT PHYS,RICHARDSON,TX 75080. UNIV TEXAS,SW MED CTR,DEPT RADIOL,DALLAS,TX 75235. RP ANTICH, P (reprint author), UNIV CALIF LOS ANGELES,DEPT PHYS & ASTRON,LOS ANGELES,CA 90024, USA. NR 6 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 10 PY 1990 VL 297 IS 3 BP 514 EP 520 DI 10.1016/0168-9002(90)91336-A PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EU074 UT WOS:A1990EU07400023 ER PT J AU HALBACH, K AF HALBACH, K TI INTEGRATION OF BEAM POSITION MONITOR SIGNALS SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Letter RP HALBACH, K (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD DEC 10 PY 1990 VL 297 IS 3 BP 531 EP 531 DI 10.1016/0168-9002(90)91339-D PG 1 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA EU074 UT WOS:A1990EU07400026 ER PT J AU LAWSON, RD GUENTHER, PT SMITH, AB AF LAWSON, RD GUENTHER, PT SMITH, AB TI AMBIGUITIES IN THE ELASTIC-SCATTERING OF 8 MEV NEUTRONS FROM ADJACENT NUCLEI SO NUCLEAR PHYSICS A LA English DT Article ID OPTICAL-MODEL ANALYSIS; ENERGY-DEPENDENCE; INELASTIC-SCATTERING; CROSS-SECTIONS; YTTRIUM AB Ratios of the cross sections for the elastic scattering of 8 MeV neutrons from adjacent nuclei are measured over the angular range approximately 20-degrees-160-degrees for the target pairs V-51/Cr, Co-59/Ni-58, Cu/Zn, Y-89/Nb-93, Y-89/Zr, Nb-93/Zr, In/Cd and Bi-209/Pb. The observed ratios vary from unity by as much as a factor of approximately 2 at some angles for the lighter target pairs. The ratios are generally consistent with a model based upon a real Woods-Saxon potential whose geometry is essentially constant between pairs, and whose strength has an (N - Z)/A (symmetry) component with a magnitude of approximately 16 MeV. For pairs with A > 100, a constant-geometry derivative Woods-Saxon imaginary potential, with a symmetry strength of approximately 15 MeV, explains the ratios. However, for the lighter nuclei, the difffuseness of the imaginary potential varies rapidly near the N = 28 and N = 50 shell closures, and for the Co-59-Ni-58 and Cu-Zn pairs, the imaginery symmetry-potential strength is about twice the 15 MeV global value. A method for approximating the spin-spin potential is given, and it is shown that this interaction makes a negligible contribution to the calculated ratios. However, channel coupling can lead to large reorientation effects which can substantially change the calculated ratios. Differences in the spin-orbit interaction between neighboring pairs can significantly affect the calculated ratios. RP LAWSON, RD (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 49 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 10 PY 1990 VL 519 IS 3 BP 487 EP 508 DI 10.1016/0375-9474(90)90442-O PG 22 WC Physics, Nuclear SC Physics GA EP406 UT WOS:A1990EP40600001 ER PT J AU BONCHE, P DOBACZEWSKI, J FLOCARD, H HEENEN, PH KRIEGER, SJ MEYER, J WEISS, MS AF BONCHE, P DOBACZEWSKI, J FLOCARD, H HEENEN, PH KRIEGER, SJ MEYER, J WEISS, MS TI QUADRUPOLE COLLECTIVE CORRELATIONS AND THE DEPOPULATION OF THE SUPERDEFORMED BANDS IN MERCURY SO NUCLEAR PHYSICS A LA English DT Article ID EVEN-EVEN NUCLEI; SHAPE ISOMERISM; SPIN AB Fully self-consistent generator coordinate method calculations have been performed on a basis of quadrupole constrained Hartree-Fock plus BCS wave functions for the five even mercury isotopes Hg-190-198. The GCM results support conclusions drawn from previous HF + BCS calculations. The predicted evolution of superdeformed band head (shape isomer) properties as a function of the neutron number is consistent with the data. Using calculated transition matrix elements, we evaluate in-band versus out-of-band quadrupole decay and explain the sudden termination of the superdeformed band. C1 INST THEORET PHYS,PL-00681 WARSAW,POLAND. UNIV PARIS 11,INST PHYS NUCL,CNRS,UNITE RECH,DIV PHYS THEOR,F-91406 ORSAY,FRANCE. UNIV PARIS 06,INST PHYS NUCL,CNRS,UNITE RECH,DIV PHYS THEOR,F-91406 ORSAY,FRANCE. UNIV LIBRE BRUXELLES,SERV PHYS NUCL THEOR,B-1050 BRUSSELS,BELGIUM. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV LYON 1,CNRS,IPNL,INST NATL PHYS NUCL & PHYS PARTICULES,F-69622 VILLEURBANNE,FRANCE. RP BONCHE, P (reprint author), CENS,SERV PHYS THEOR,F-91191 GIF SUR YVETTE,FRANCE. NR 35 TC 70 Z9 70 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 10 PY 1990 VL 519 IS 3 BP 509 EP 520 DI 10.1016/0375-9474(90)90443-P PG 12 WC Physics, Nuclear SC Physics GA EP406 UT WOS:A1990EP40600002 ER PT J AU KOTLINSKI, B CZOSNYKA, T CLINE, D SREBRNY, J WU, CY BACKLIN, A HASSELGREN, L WESTERBERG, L BAKTASH, C STEADMAN, SG AF KOTLINSKI, B CZOSNYKA, T CLINE, D SREBRNY, J WU, CY BACKLIN, A HASSELGREN, L WESTERBERG, L BAKTASH, C STEADMAN, SG TI HEAVY-ION COULOMB-EXCITATION OF GE-72 SO NUCLEAR PHYSICS A LA English DT Article ID GE ISOTOPES; SHAPE TRANSITION; EVEN GE; MICROSCOPIC DESCRIPTION; GERMANIUM NUCLEI; O+ STATES; COEXISTENCE; MODEL AB The nucleus Ge-72 has been Coulomb excited using O-16, Ni-58 and Pb-208. Seventeen E2 matrix elements coupling the low-lying states have been determined. Based on these data, an interpretation of the structure of Ge-72 has been proposed that includes an "intruder" 0+ state perturbing what the present work shows to be a triaxial quadrupole-deformed collective rotational structure. C1 UNIV UPPSALA,INST RADIAT SCI,S-75121 UPPSALA,SWEDEN. OAK RIDGE NATL LAB,OAK RIDGE,TN 37830. MIT,CAMBRIDGE,MA 02139. UNIV WARSAW,SLCJ,PL-02097 WARSAW,POLAND. UNIV WARSAW,INST EXPTL PHYS,PL-00681 WARSAW,POLAND. RP KOTLINSKI, B (reprint author), UNIV ROCHESTER,NUCL STRUCT RES LAB,ROCHESTER,NY 14627, USA. NR 35 TC 43 Z9 43 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 DEC 10 PY 1990 VL 519 IS 3 BP 646 EP 658 DI 10.1016/0375-9474(90)90451-Q PG 13 WC Physics, Nuclear SC Physics GA EP406 UT WOS:A1990EP40600010 ER PT J AU GYULASSY, M PLUMER, M AF GYULASSY, M PLUMER, M TI JET QUENCHING IN LEPTON NUCLEUS SCATTERING SO NUCLEAR PHYSICS B LA English DT Article RP GYULASSY, M (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720, USA. NR 25 TC 41 Z9 41 U1 0 U2 2 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 DEC 10 PY 1990 VL 346 IS 1 BP 1 EP 16 DI 10.1016/0550-3213(90)90235-6 PG 16 WC Physics, Particles & Fields SC Physics GA EE483 UT WOS:A1990EE48300001 ER PT J AU ARNOLD, PB AF ARNOLD, PB TI GRAVITY AND FALSE VACUUM DECAY-RATES - O(3) SOLUTIONS SO NUCLEAR PHYSICS B LA English DT Article RP ARNOLD, PB (reprint author), ARGONNE NATL LAB,DIV HIGH ENERGY PHYS,ARGONNE,IL 60439, USA. NR 28 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 DEC 10 PY 1990 VL 346 IS 1 BP 160 EP 192 DI 10.1016/0550-3213(90)90243-7 PG 33 WC Physics, Particles & Fields SC Physics GA EE483 UT WOS:A1990EE48300009 ER PT J AU HALL, LJ RANDALL, L AF HALL, LJ RANDALL, L TI WEAK-SCALE EFFECTIVE SUPERSYMMETRY SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV PHYS,THEORET PHYS GRP,BERKELEY,CA 94720. RP HALL, LJ (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 12 TC 289 Z9 289 U1 1 U2 1 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 DEC 10 PY 1990 VL 65 IS 24 BP 2939 EP 2942 DI 10.1103/PhysRevLett.65.2939 PG 4 WC Physics, Multidisciplinary SC Physics GA EL840 UT WOS:A1990EL84000005 ER PT J AU MARCIANO, WJ ROSNER, JL AF MARCIANO, WJ ROSNER, JL TI ATOMIC PARITY VIOLATION AS A PROBE OF NEW PHYSICS SO PHYSICAL REVIEW LETTERS LA English DT Article C1 UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637. UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637. RP MARCIANO, WJ (reprint author), BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973, USA. NR 46 TC 315 Z9 315 U1 0 U2 1 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 DEC 10 PY 1990 VL 65 IS 24 BP 2963 EP 2966 DI 10.1103/PhysRevLett.65.2963 PG 4 WC Physics, Multidisciplinary SC Physics GA EL840 UT WOS:A1990EL84000011 ER PT J AU WELLS, BO SHEN, ZX DESSAU, DS SPICER, WE OLSON, CG MITZI, DB KAPITULNIK, A LIST, RS ARKO, A AF WELLS, BO SHEN, ZX DESSAU, DS SPICER, WE OLSON, CG MITZI, DB KAPITULNIK, A LIST, RS ARKO, A TI ANGLE-RESOLVED-PHOTOEMISSION STUDY OF BI2SR2CACU2O8+DELTA - METALLICITY OF THE BI-O PLANE SO PHYSICAL REVIEW LETTERS LA English DT Article C1 IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. STANFORD UNIV,DEPT APPL PHYS,STANFORD,CA 94305. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. RP WELLS, BO (reprint author), STANFORD UNIV,STANFORD ELECTR LABS,STANFORD,CA 94305, USA. RI Mitzi, David/B-6260-2012 OI Mitzi, David/0000-0001-5189-4612 NR 24 TC 116 Z9 116 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 DEC 10 PY 1990 VL 65 IS 24 BP 3056 EP 3059 DI 10.1103/PhysRevLett.65.3056 PG 4 WC Physics, Multidisciplinary SC Physics GA EL840 UT WOS:A1990EL84000035 ER PT J AU ERCK, RA ERDEMIR, A FENSKE, GR AF ERCK, RA ERDEMIR, A FENSKE, GR TI EFFECT OF FILM ADHESION ON TRIBOLOGICAL PROPERTIES OF SILVER-COATED ALUMINA SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA ID WEAR AB Soft metal films are seen as possible solid lubricants for sliding ceramics in high temperature environments. Ion bombardment of substrate and film can improve film adhesion and tribological properties of metal films deposited on ceramics. To provide a more detailed understanding of the relationship between measured adhesion strength, surface roughness, and wear performance of coatings, thin silver films were vapor deposited on smooth and roughened alumina substrates using 1 keV ion bombardment before and during deposition. A pull-type tester was used to measure the adhesion of films to the substrate. A ball-on-flat test machine was used to evaluate the wear of an uncoated alumina ball sliding on silver-coated substrates. Measurements of film adhesion and sliding wear, and a scanning electron microscopy examination of wear tracks, are reported. Ball wear on roughened surfaces was reduced by a factor of about 3 for poorly adhering coatings, but by a factor of about 130 for well-adhering coatings deposited after argon-oxygen sputter cleaning, compared with bare Al2O3. For films with the lowest wear, the silver coating wore off the tips of the asperities, but the film remained almost completely intact. For smooth flats, wear reductions by a factor of about 3 were obtained for well-adherent coatings. RP ERCK, RA (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439, USA. NR 17 TC 17 Z9 17 U1 1 U2 2 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 577 EP 587 DI 10.1016/0257-8972(90)90002-T PG 11 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000001 ER PT J AU ERDEMIR, A FENSKE, GR ERCK, RA AF ERDEMIR, A FENSKE, GR ERCK, RA TI A STUDY OF THE FORMATION AND SELF-LUBRICATION MECHANISMS OF BORIC-ACID FILMS ON BORIC OXIDE COATINGS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA AB An investigation was made of the formation and self-lubrication mechanisms of boric acid films on boric oxide coatings prepared by vacuum evaporation. Measured friction coefficients of a steel ball sliding on a boric-oxide-coated steel disk and a sapphire ball sliding on a boric-oxide-coated alumina disk were 0.025-0.05 at steady state, depending on load and substrate material. This low friction was correlated with the formation of a lubricious boric acid film on boric oxide coatings exposed to open air. For the mechanism of self-lubrication, the layered triclinic crystal structure of boric acid was proposed. The atoms constituting each boric acid molecule are arrayed in closely packed and strongly bonded layers that are 0.318 nm apart and held together by weak forces, such as van der Waals'. It is hypothesized that, during sliding, these layers can align themselves parallel to the direction of relative motion and, once so aligned, can slide over one another with relative ease to provide low friction. Structural and chemical findings were included to substantiate the proposed solid lubrication mechanism. RP ERDEMIR, A (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,TRIBOL SECT,ARGONNE,IL 60439, USA. NR 15 TC 63 Z9 66 U1 1 U2 16 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 588 EP 596 DI 10.1016/0257-8972(90)90003-U PG 9 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000002 ER PT J AU HIRVONEN, JP NASTASI, M JERVIS, TR ZOCCO, TG AF HIRVONEN, JP NASTASI, M JERVIS, TR ZOCCO, TG TI MODIFICATION OF SURFACE MECHANICAL-PROPERTIES OF HIGH CHROMIUM TOOL STEEL BY CARBON-IMPLANTED CODEPOSITED FE-TI FILMS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article ID STAINLESS-STEEL; TITANIUM; FRICTION; WEAR AB An iron-titanium film 300 nm thick was deposited on a tool steel (1.55% C, 0.3% Si, 0.3% Mn, 12% Cr, 0.8% Mo, and 0.8% V) by co-evaporation of iron and titanium. Subsequently this surface film was implanted with carbon at energies of 55, 120, and 200 keV to a total fluence of 1.24 x 10(18) C+ cm-2. This treatment produced a surface hardness of 15 GPa. The effect of this coating on unlubricated wear and friction was tested in air at a relative humidity of 10% in a pin-on-disc tester using a 440C pin as a counterface. The sliding mechanism of the untreated substrate was found to be based on the transfer of pin material and subsequent growth of uneven oxide hillocks on the wear track. Oxide scales were observed also on a wear scar of the pin, presumably as a result of back-deposition. In contrast, the sliding mechanism on the coated sample was drastically different. A more uniform transfer film originating in the coating was found on the pin, resulting in sliding between identical materials. No wearthrough of the coating occurred during the test of 5000 cycles at a hertzian pressure of 835 MPa, and the surface of the wear track showed extreme smoothness to the very end of the test. The friction coefficient was decreased from 0.7 for the uncoated to 0.2 for the coated surface. The wear track on the the coated surface was also found to be slightly oxidized, as determined by a nuclear reaction (O-16(d,p)O-17). The reduction in friction was mainly attributed to the increased hardness of the counterfaces and an adequate but controlled oxidation. RP HIRVONEN, JP (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, DIV MAT SCI & TECHNOL, POB 1663, MS K765, LOS ALAMOS, NM 87545 USA. NR 15 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 597 EP 608 DI 10.1016/0257-8972(90)90004-V PG 12 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000003 ER PT J AU NATESAN, K JOHNSON, RN AF NATESAN, K JOHNSON, RN TI DEVELOPMENT OF COATINGS WITH IMPROVED CORROSION-RESISTANCE IN SULFUR-CONTAINING ENVIRONMENTS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA AB Corrosion of metallic structural materials at elevated temperatures in complex multicomponent gas environments is a potential problem in many fossil energy systems, especially those using coal as a feedstock. The use of appropriate corrosion-resistant coatings on metallic components offers an avenue to minimize material degradation and to extend component life. In the present study, the chemical compatibility of a number of coatings is examined by exposing them to simulated oxygen-sulfur mixed gas environments at metal temperatures of 500 and 650-degrees-C. Coatings were developed via pack cementation and electrospark deposition techniques on T22 and T91 substrates. The oxidation-sulfidation test results obtained for the coated specimens were compared with those for the uncoated alloys as well as other high chromium structural alloys of interest in fossil energy applications. C1 WESTINGHOUSE HANFORD CO,HANFORD ENGN DEV LAB,RICHLAND,WA 99352. RP NATESAN, K (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,ARGONNE,IL 60439, USA. NR 5 TC 11 Z9 13 U1 1 U2 5 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 821 EP 835 DI 10.1016/0257-8972(90)90024-7 PG 15 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000023 ER PT J AU LIU, YJ LEVY, AV AF LIU, YJ LEVY, AV TI EROSION AND EROSION CORROSION BEHAVIOR OF CHROMIZED ALUMINIZED STAINLESS-STEELS AT ROOM AND ELEVATED-TEMPERATURES SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA ID PLATELET MECHANISM AB The metal wastage caused by the impact of small solid particles on surfaces that are simultaneously corroded at elevated temperatures is a problem in several types of energy systems. Protective coatings are used on components in chemical process plants and boilers to protect the surfaces of steel alloys from corrosion, erosion and abrasion, or a combination of these. An investigation of the erosion-corrosion behavior of combined chromized-aluminized coatings on stainless steel 304SS and 410SS was carried out at room and elevated temperature conditions. The coated steels had lower metal loss rates than the bare metal. Different microstructures of the same basic coating material had different erosion-corrosion behavior. Erodent particles that were embedded in the eroded surfaces of the coatings could have influenced their erosion and erosion-corrosion behavior. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP LIU, YJ (reprint author), TSING HUA UNIV,BEIJING 100084,PEOPLES R CHINA. NR 9 TC 3 Z9 3 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 836 EP 847 DI 10.1016/0257-8972(90)90025-8 PG 12 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000024 ER PT J AU WANG, BQ GENG, GQ LEVY, AV AF WANG, BQ GENG, GQ LEVY, AV TI EROSION CORROSION OF THERMAL SPRAY COATINGS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA ID BEHAVIOR AB Nine thermal spray coatings on mild steel, including hard tungsten carbide-cobalt and softer, more ductile metals that are supposed to provide wear protection, were eroded-corroded at elevated temperature using 250-mu-m fluidized bed combustor bed material and quartz particles. It was found that all the coatings had lower material wastage rates than the base metal, 1018 steel. When the coatings were eroded by bed material particles, the ductile metal coatings had the same or lower material wastage rates than the harder tungsten carbide-cobalt. When quartz particles were used as the erodent, the ratio of the target hardness to the hardness of the erodent particles appeared to play a significant role in the erosion-corrosion behavior of the thermal spray coatings. The relationship between coating composition and morphology and the material wastage was determined. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP WANG, BQ (reprint author), XIAN INST HIGHWAYS,XIAN,PEOPLES R CHINA. NR 12 TC 16 Z9 16 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 859 EP 874 PG 16 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000026 ER PT J AU SHUI, ZR WANG, BQ LEVY, AV AF SHUI, ZR WANG, BQ LEVY, AV TI EROSION OF PROTECTIVE COATINGS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA AB The room temperature erosion behavior of four different coatings on 1018 mild steel, namely clad WC + NiCrB, detonation gun Cr3C2, sputtered Cr3C2 and electroless Ni + P, were investigated. The erosion tests were carried out under conditions that were representative of those which could occur in coal particle, energy production systems, with the exception of the test temperature. It was determined that the clad WC + NiCrB coating had a low erosion rate compared with most other materials tested, and that the hardness of the coating did not relate directly to the erosion resistance. For the hard coatings tested at low particle velocity, the erosion mechanism appeared to be cracking and chipping. As the particle velocity increased, more plastic deformation of the clad alloy was observed. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP SHUI, ZR (reprint author), XIAN INST HIGHWAYS,XIAN,PEOPLES R CHINA. NR 9 TC 5 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 875 EP 887 PG 13 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000027 ER PT J AU GALUSKA, AA AF GALUSKA, AA TI COPPER GLASSY-CARBON ADHESION - IMPROVEMENT THROUGH AL-27(+) IMPLANTATION SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA ID ION-ENHANCED ADHESION; NI FILMS; X-RAY; ALUMINUM AB The adhesion and interfacial chemistry of copper films on glassy carbon (GC) were examined as a function of Al-27(+) ion mixing (1 X 10(16), 5 X 10(16) and 2 x 10(17) Al cm-2) through the Cu-GC interface. The as-deposited films were removed at a force of only 1 N during scratch testing. Implantation with 1 x 10(16) Al cm-2 had little influence on the critical force required for film removal or the properties of the copper films. Implantation with 5 x 10(16) Al cm-2 increased the critical force to 25 N while maintaining film integrity. Implantation with 2 x 10(17) Al cm-2 increased the critical force to 45 N, but resulted in significant physical and chemical degradation of the copper films. X-ray photoelectron spectroscopy and Auger electron spectroscopy analyses suggest that the adhesion increases were primarily the result of ion-induced interfacial chemistry (Cu-Al-C bonding). RP GALUSKA, AA (reprint author), SANDIA NATL LABS,DIV 1823,ALBUQUERQUE,NM 87185, USA. NR 15 TC 4 Z9 4 U1 1 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 10 PY 1990 VL 43-4 IS 1-3 BP 975 EP 985 DI 10.1016/0257-8972(90)90036-C PG 11 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EQ900 UT WOS:A1990EQ90000035 ER PT J AU HAALAND, DM HIGGINS, KL TALLANT, DR AF HAALAND, DM HIGGINS, KL TALLANT, DR TI MULTIVARIATE CALIBRATION OF CARBON RAMAN-SPECTRA FOR QUANTITATIVE-DETERMINATION OF PEAK TEMPERATURE HISTORY SO VIBRATIONAL SPECTROSCOPY LA English DT Article DE RAMAN SPECTROMETRY; CALIBRATION; CARBON; PEAK TEMPERATURE HISTORY ID LEAST-SQUARES METHODS; SPECTROSCOPY; LASER AB Multivariate calibration methods are shown to yield quantitative estimates of peak sample temperatures of carbonaceous materials based on their Raman spectra. Partial least-squares (PLS) and principal component regression (PCR) multivariate calibration methods applied to uncorrected Raman spectra of carbon heat-shield materials yielded similar standard errors of predictions (SEP) of peak temperatures (SEP of 202-degrees-C for PLS and 191-degrees-C for PCR) for samples heated to temperatures ranging from 375 to 2700-degrees-C. Narrowing the range of peak temperatures of the calibration samples to 1200-2700-degrees-C improved the SEP for these samples by a factor of two. These analyses improved previous methods by eliminating tedious and subjective spectral baseline corrections and band fitting. Raman temperature determinations of future samples would, therefore, be more reliable and faster. The Raman analysis can proceed successfully in the presence of sample-dependent scattering efficiencies, baseline variations, and fluorescence. Useful qualitative information was also obtained by observing the pattern of temperature errors and by examining the loading vectors used to model the spectra. Finally, efficient outlier detection methods are available with these multivariate methods to identify problem samples. These same outlier detection methods could be used to improve the reliability of future analyses by identifying those samples which are different from the calibration samples and whose analysis by these multivariate methods might be considered suspect. RP HAALAND, DM (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 12 TC 9 Z9 9 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0924-2031 J9 VIB SPECTROSC JI Vib. Spectrosc. PD DEC 10 PY 1990 VL 1 IS 1 BP 35 EP 40 DI 10.1016/0924-2031(90)80005-O PG 6 WC Chemistry, Analytical; Chemistry, Physical; Spectroscopy SC Chemistry; Spectroscopy GA EW292 UT WOS:A1990EW29200004 ER PT J AU GOLSHANSHIRAZI, S GUIOCHON, G AF GOLSHANSHIRAZI, S GUIOCHON, G TI DEPENDENCE OF THE PRODUCTION-RATE ON THE RELATIVE RETENTION OF 2 COMPONENTS IN PREPARATIVE CHROMATOGRAPHY SO JOURNAL OF CHROMATOGRAPHY LA English DT Article ID LIQUID-CHROMATOGRAPHY; OPTIMIZATION AB The maximum possible production rate which can be obtained with a given chromatographic system, under optimized conditions, increases approximately as the third power of (alpha-1)/alpha. The optimum conditions themselves depend also on the relative retention. In contrast, the production rate of a given column (constant column length, L, and particle size, d(p)) increases more slowly, nearly in proportion to the square of (alpha-1)/alpha when the ratio d(p)2/L is lower than its optimum values. These relationships are valid under both touching band and overlapping band conditions. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 13 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR PD DEC 7 PY 1990 VL 523 BP 1 EP 10 DI 10.1016/0021-9673(90)85006-H PG 10 WC Chemistry, Analytical SC Chemistry GA EP030 UT WOS:A1990EP03000001 ER PT J AU NEWBURGER, J GUIOCHON, G AF NEWBURGER, J GUIOCHON, G TI UTILITY OF THE DISPLACEMENT EFFECT IN THE ROUTINE OPTIMIZATION OF SEPARATIONS BY PREPARATIVE LIQUID-CHROMATOGRAPHY SO JOURNAL OF CHROMATOGRAPHY LA English DT Article ID LANGMUIR ISOTHERM; IDEAL MODEL; PARAMETERS; COLUMNS; MIXTURE AB The utility of the displacement effect, previously observed between the first- and the second-eluted components of a particular binary mixture ("sample self-displacement effect"), is demonstrated by a further series of experiments. The use of this phenomenon is shown to be an effective, general approach for the separation of a binary mixture. When practical, it considerably facilitates the optimization of experimental conditions for a high production rate of very pure fractions, while permitting the achievement of high recovery yields. Using a 750 x 21.4 mm I.D. silica column, separations of several two-component mixtures were achieved for loads as high as 6 g per injection. A good recovery of the first-eluting component with a purity higher than 99% is easily achieved. As the loading increases, tailing of the first component into the second band can reduce the production of the second component. Nevertheless, the recoveries for both components can be substantially greater than those achieved with conventional elution chromatography. Factors found to influence recovery yield are alpha, kappa' and the mobile phase flow-rate. Guidelines are presented that can be used routinely to induce the self-displacement separation mode. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. SQUIBB INST MED RES,PRINCETON,NJ 08543. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 17 TC 24 Z9 24 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR PD DEC 7 PY 1990 VL 523 BP 63 EP 80 DI 10.1016/0021-9673(90)85012-K PG 18 WC Chemistry, Analytical SC Chemistry GA EP030 UT WOS:A1990EP03000007 ER PT J AU CRAWFORD, MK FARNETH, WE MCCARRON, EM HARLOW, RL MOUDDEN, AH AF CRAWFORD, MK FARNETH, WE MCCARRON, EM HARLOW, RL MOUDDEN, AH TI OXYGEN ISOTOPE EFFECT AND STRUCTURAL PHASE-TRANSITIONS IN LA2CUO4-BASED SUPERCONDUCTORS SO SCIENCE LA English DT Article C1 CEA,CNRS,LAB LEON BRILLOUIN,F-91191 GIF SUR YVETTE,FRANCE. BROOKHAVEN NATL LAB,UPTON,NY 11973. RP CRAWFORD, MK (reprint author), DUPONT CO,WILMINGTON,DE 19880, USA. NR 30 TC 141 Z9 143 U1 0 U2 4 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 7 PY 1990 VL 250 IS 4986 BP 1390 EP 1394 DI 10.1126/science.250.4986.1390 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EL843 UT WOS:A1990EL84300036 PM 17754985 ER PT J AU STOCKMAN, HW STOCKMAN, CT CARRIGAN, CR AF STOCKMAN, HW STOCKMAN, CT CARRIGAN, CR TI MODELING VISCOUS SEGREGATION IN IMMISCIBLE FLUIDS USING LATTICE-GAS AUTOMATA SO NATURE LA English DT Article C1 SCI APPLICAT INT CORP,ALBUQUERQUE,NM 87106. UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV EARTH SCI,LIVERMORE,CA 94550. RP STOCKMAN, HW (reprint author), SANDIA NATL LABS,DIV 6233,ALBUQUERQUE,NM 87185, USA. NR 20 TC 15 Z9 15 U1 0 U2 3 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD DEC 6 PY 1990 VL 348 IS 6301 BP 523 EP 525 DI 10.1038/348523a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EL760 UT WOS:A1990EL76000056 ER PT J AU DOWNING, KH HU, MS WENK, HR OKEEFE, MA AF DOWNING, KH HU, MS WENK, HR OKEEFE, MA TI RESOLUTION OF OXYGEN-ATOMS IN STAUROLITE BY 3-DIMENSIONAL TRANSMISSION ELECTRON-MICROSCOPY SO NATURE LA English DT Article C1 UNIV CALIF BERKELEY,DEPT GEOL & GEOPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,BERKELEY,CA 94720. RP DOWNING, KH (reprint author), UNIV CALIF BERKELEY,DONNER LAB,BERKELEY,CA 94720, USA. NR 13 TC 45 Z9 45 U1 1 U2 3 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD DEC 6 PY 1990 VL 348 IS 6301 BP 525 EP 528 DI 10.1038/348525a0 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA EL760 UT WOS:A1990EL76000057 ER PT J AU STEINBERG, GK FABRIKANT, JI AF STEINBERG, GK FABRIKANT, JI TI STEREOTAXIC RADIATION FOR INTRACRANIAL ARTERIOVENOUS-MALFORMATIONS - REPLY SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Letter C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP STEINBERG, GK (reprint author), STANFORD UNIV,MED CTR,SCH MED,STANFORD,CA 94305, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MASS MEDICAL SOC PI BOSTON PA 10 SHATTUCK, BOSTON, MA 02115 SN 0028-4793 J9 NEW ENGL J MED JI N. Engl. J. Med. PD DEC 6 PY 1990 VL 323 IS 23 BP 1636 EP 1637 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA EK696 UT WOS:A1990EK69600025 ER PT J AU WU, JS BOTTCHER, C STRAYER, MR AF WU, JS BOTTCHER, C STRAYER, MR TI COHERENT PARTICLE-PRODUCTION IN A CLASSICAL FIELD APPROXIMATION SO PHYSICS LETTERS B LA English DT Article ID HEAVY-ION COLLISIONS; HIGGS-BOSON AB A classical field approximation for the coherent production of particles via two-photon processes is derived and related to the same result obtained with quantum field theory. It is shown that two approaches give identical results whenever the frequency of the virtual photons is small compared to available energy, as is the case in ultrarelativistic heavy-ion collisions. RP WU, JS (reprint author), OAK RIDGE NATL LAB,CTR COMP INTENS PHYS,DIV PHYS,OAK RIDGE,TN 37831, USA. NR 20 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD DEC 6 PY 1990 VL 252 IS 1 BP 37 EP 42 DI 10.1016/0370-2693(90)91076-N PG 6 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300009 ER PT J AU CARENA, M TERVELDHUIS, WTA WAGNER, CEM CHAUDHURI, S AF CARENA, M TERVELDHUIS, WTA WAGNER, CEM CHAUDHURI, S TI PARITY BREAKDOWN AND INDUCED FERMION NUMBER IN THE O(3) NONLINEAR SIGMA-MODEL SO PHYSICS LETTERS B LA English DT Article ID VACUUM POLARIZATION; FIELD-THEORY; SOLITONS; CHARGE AB We study the fermion number induced by solitons in the O(3) nonlinear sigma-model in (2 + 1)-dimensions, in the presence of a parity breaking fermion mass term. The appearance of zero energy modes during the adiabatic evolution of a background of winding number unity is analysed as a function of the relative magnitudes of the explicit, odd parity, fermion mass, M(odd), the fermion mass induced by the Yukawa coupling, M(Y), and the inverse soliton width, 1/P(s). We find P(c), the maximum value of p = p(s)m(Y) for which a fermion zero energy level crossing occurs. For M(f) = m(odd)/m(Y) < 1 and p > P(c)(M(f)) the ground state charge of the soliton is wholly topological. Otherwise, it vanishes. C1 FERMI NATL ACCELERATOR LAB,THEORET PHYS GRP,BATAVIA,IL 60510. RP CARENA, M (reprint author), PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907, USA. NR 31 TC 2 Z9 2 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 DEC 6 PY 1990 VL 252 IS 1 BP 101 EP 107 DI 10.1016/0370-2693(90)91088-S PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300021 ER PT J AU GUENDELMAN, EI OWEN, DA AF GUENDELMAN, EI OWEN, DA TI PION CONDENSATES - MULTIPLE PHOTON MASS GENERATION IN PRESENCE OF HEAVY-IONS SO PHYSICS LETTERS B LA English DT Article AB It is shown that the charged pion-photon coupling, in the region between two heavy nuclei while colliding, gives rise to a photon mass. Independently of this, when there is a neutral pion condensation (also in the region between the heavy nuclei) as well, a mass arises from a Chern-Simons type term. However, when both these effects are considered together, photons having a multiple mass spectrum are generated. It is thus suggestive that the decay of the "heavy" photons into e+e- could provide an explanation of the anomalous multiple e+e- MeV peaks observed in heavy ion scattering. RP GUENDELMAN, EI (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,MS-B285,LOS ALAMOS,NM 87545, USA. NR 9 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD DEC 6 PY 1990 VL 252 IS 1 BP 113 EP 115 DI 10.1016/0370-2693(90)91090-X PG 3 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300023 ER PT J AU MUKHOPADHYAYA, B AF MUKHOPADHYAYA, B TI EXOTIC HIGGS INTERACTIONS AND Z-FACTORIES SO PHYSICS LETTERS B LA English DT Article ID BOSONS AB We discuss some consequences of tree-level H +/- W -/+ Z interactions in a model with triplet Higgs bosons whose vacuum expectation values can potentially contribute to the W and Z masses. It is shown that such interactions can make the model confront crucial tests in Z-factories and constrain its parameter space from the current data. C1 OKLAHOMA STATE UNIV,DEPT PHYS,STILLWATER,OK 74078. RP MUKHOPADHYAYA, B (reprint author), FERMI NATL ACCELERATOR LAB,POB 500,BATAVIA,IL 60510, USA. NR 15 TC 8 Z9 8 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 DEC 6 PY 1990 VL 252 IS 1 BP 123 EP 126 DI 10.1016/0370-2693(90)91093-Q PG 4 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300026 ER PT J AU Abreu, P Adam, W Adami, F Adye, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratay, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FRC Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gawne, S Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Goobar, A Gopal, G Gorski, M Gouz, Y Gracco, V Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantarjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethum, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, S Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nnau-Lorzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T Paper, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronschese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanxhez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Trustram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Visnevskiy, NK Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimim, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J AF Abreu, P Adam, W Adami, F Adye, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Augustin, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Bjarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratay, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FRC Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonso, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gawne, S Gazis, EN Gerber, JP Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Goobar, A Gopal, G Gorski, M Gouz, Y Gracco, V Grant, A Grard, F Graziani, E Gritsaenko, IA Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantarjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kostrikov, M Kourkoumelis, C Kreuzberger, T Krolikowski, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethum, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, S Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nnau-Lorzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T Paper, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronschese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanxhez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squarcia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Trustram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Visnevskiy, NK Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimim, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J CA DELPHI Collaboration TI MEASUREMENT OF THE PARTIAL WIDTH OF THE DECAY OF THE Z0 INTO CHARM QUARK PAIRS SO PHYSICS LETTERS B LA English DT Article ID LUND MONTE-CARLO; D-STAR-MESON; E+E ANNIHILATION; JET FRAGMENTATION; CROSS-SECTION; PHYSICS; ENERGY AB A determination of the partial width gamma-cc-BAR of the Z0 boson into charm quark pairs is presented, based on a total sample of 36 900 Z0 hadronic decays measured with the DELPHI detector at the LEP collider. The production rate of ccBAR events is derived from the inclusive analysis of charged pions coming from the decay of charmed meson D*+ --> D0-pi+ and D*- --> DBAR0-pi- where the pi- +/- is constrained by kinematics to have a low p(T) with respect to the jet axis. The probability to procedure these pi- +/- from D* +/- decay in ccBAR events is taken to be 0.31 +/- 0.05 as measured at square-root s = 10.55 GeV. The measured relative partial width GAMMA-ccBAR/GAMMA-h = 0.162 +/- 0.030 (stat.) +/- 0.050(syst.) is in good agreement with the standard model value of 0.171. Together with our previous measurement of the total hadronic width GAMMA-h this implies GAMMA-ccBAR = 282 +/- 53(stat.) +/- 88(syst.) MeV. C1 LIP, P-1000 Lisbon, PORTUGAL. Osterreich Akad Wissensch, Inst Hochenergiephys, A-1050 Vienna, AUSTRIA. CEN Saclay, DPhPE, F-91191 Gif Sur Yvette, FRANCE. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, ENGLAND. Joint Inst Nucl, SU-101000 Moscow, RUSSIA. 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Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE. Inst High Energy Phys, SU-142284 Protvino, Moscow Region, RUSSIA. Nucl Res Ctr Demokritos, Greek Atom Energy Commiss, GR-15310 Aghia Paraskevi, GREECE. CRN Grp DELPHI, Div Hautes Energies, F-67037 Strasbourg, FRANCE. LEPSI, F-67037 Strasbourg, FRANCE. Univ Instelling Antwerpen, Phys Dept, B-2610 Wilrijk, BELGIUM. ULB VUB, IIHE, B-1050 Brussels, BELGIUM. Univ Etat Mons, Fac Sci, Serv Phys Particules Elementaires, B-7000 Mons, BELGIUM. Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, ENGLAND. Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, ITALY. Ist Nazl Fis Nucl, I-10125 Turin, ITALY. Univ Bologna, Dipartimento Fis, I-40126 Bologna, ITALY. Ist Nazl Fis Nucl, I-40126 Bologna, ITALY. NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS. Univ Milan, Dipartimento Fis, I-20133 Milan, ITALY. Ist Nazl Fis Nucl, I-20133 Milan, ITALY. Univ Uppsala, Dept Radiat Sci, S-75121 Uppsala, SWEDEN. Univ Genoa, Dipartimento Fis, I-16146 Genoa, ITALY. Ist Nazl Fis Nucl, I-16146 Genoa, ITALY. Univ Helsinki, Dept High Energy Phys, SF-00170 Helsinki 17, FINLAND. Univ Oslo, Phys Dept, N-1000 Oslo 3, NORWAY. Univ Santander, Fac Ciencias, E-39005 Santander, SPAIN. Univ Padua, Dipartimento Fis, I-35131 Padua, ITALY. Ist Nazl Fis Nucl, I-35131 Padua, ITALY. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Niels Bohr Inst, DK-2100 Copenhagen O, DENMARK. Inst Nuclear Studies, PL-00681 Warsaw, POLAND. Univ Warsaw, PL-00681 Warsaw, POLAND. Natl Tech Univ, Phys Dept, GR-15773 Athens, GREECE. Inst Nucl Phys, High Energy Phys Lab, PL-30055 Krakow 30, POLAND. RP Abreu, P (reprint author), LIP, Av Elias Garcia 14 Le, P-1000 Lisbon, PORTUGAL. RI Barao, Fernando/O-2357-2016; Zuniga, Juan/P-4385-2014; Matorras, Francisco/I-4983-2015; Vaz, Pedro/K-2464-2013; Ferrer, Antonio/H-2942-2015; Ruiz, Alberto/E-4473-2011; Ragazzi, Stefano/D-2463-2009; Rovelli, Tiziano/K-4432-2015; Lozano-Bahilo, Julio/F-4881-2016; SANCHIS, ENRIQUE/J-7348-2016; Hernandez-Rey, Juan Jose/N-5955-2014; Abreu, Pedro/L-2220-2014; Zaitsev, Alexandre/B-8989-2017; Pimenta, Mario/M-1741-2013; Varela, Joao/K-4829-2016; OI Barao, Fernando/0000-0002-8346-9941; Zuniga, Juan/0000-0002-1041-6451; Matorras, Francisco/0000-0003-4295-5668; Vaz, Pedro/0000-0002-7186-2359; Ferrer, Antonio/0000-0003-0532-711X; Ruiz, Alberto/0000-0002-3639-0368; Ragazzi, Stefano/0000-0001-8219-2074; Rovelli, Tiziano/0000-0002-9746-4842; Lozano-Bahilo, Julio/0000-0003-0613-140X; SANCHIS, ENRIQUE/0000-0002-9689-9131; Hernandez-Rey, Juan Jose/0000-0002-1527-7200; Abreu, Pedro/0000-0002-9973-7314; Zaitsev, Alexandre/0000-0002-4961-8368; Demaria, Natale/0000-0003-0743-9465; Pimenta, Mario/0000-0002-2590-0908; Matteuzzi, Clara/0000-0002-4047-4521; DE MIN, ALBERTO/0000-0002-8130-9389; Bonesini, Maurizio/0000-0001-5119-1896; Sannino, Mario/0000-0001-7700-8383; De Angelis, Alessandro/0000-0002-3288-2517; Varela, Joao/0000-0003-2613-3146; De Lotto, Barbara/0000-0003-3624-4480; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394 NR 21 TC 17 Z9 17 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD DEC 6 PY 1990 VL 252 IS 1 BP 140 EP 148 DI 10.1016/0370-2693(90)91096-T PG 9 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300029 ER PT J AU Abreu, P Adam, W Adami, F Ayde, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Augustinus, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Biarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonzo, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gawne, S Gazis, EN Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gouz, Y Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kourkoumelis, C Kreuzberger, T Kreuzberger, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poliakov, B Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squaricia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J AF Abreu, P Adam, W Adami, F Ayde, T Alekseev, GD Allen, P Almehed, S Alted, F Alvsvaag, SJ Amaldi, U Anassontzis, E Apel, WD Asman, B Astier, P Augustinus, JE Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, DY Baroncelli, A Barring, O Bartl, W Bates, MJ Baubillier, M Becks, KH Beeston, CJ Beilliere, P Belokopytov, I Beltran, P Benedic, D Benlloch, JM Berggren, M Bertrand, D Biagi, S Bianchi, F Bibby, JH Bilenky, MS Billoir, P Biarne, J Bloch, D Bogolubov, PN Bollini, D Bolognese, T Bonapart, M Bonesini, M Booth, PSL Boratav, M Borgeaud, P Borner, H Bosio, C Botner, O Bouquet, B Bozzo, M Braibant, S Branchini, P Brand, KD Brenner, RA Bricman, C Brown, RCA Brummer, N Brunet, JM Bugge, L Buran, T Burmeister, H Buytaert, JAMA Caccia, M Calvi, M Rozas, AJC Campagne, JE Campion, A Camporesi, T Canale, V Cao, F Carroll, L Caso, C Castelli, E Gimenez, MVC Cattai, A Cavallo, FR Cerrito, L Charpentier, P Checchia, P Chelkov, GA Chevalier, L Chliapnikov, P Chorowicz, V Cirio, R Clara, MP Contreras, JL Contri, R Cosme, G Couchot, F Crawley, HB Crennell, D Cresti, M Crosetti, G Crosland, N Crozon, M Maestro, JC Czellar, S Dagoret, S Dahl-Jensen, E Dalmagne, B Dam, M Damgaard, G Darbo, G Daubie, E Dauncey, PD Davenport, M David, P De Angelis, A De Beer, M De Boeck, H De Boer, W De Clercq, C Laso, MDMD De Groot, N De La Vaissiere, C De Lotto, B De Min, A Defoix, C Delikaris, D Delpierre, P Demaria, N Di Ciaccio, L Diddens, AN Dijkstra, H Djama, F Dolbeau, J Doll, O Doroba, K Dracos, M Drees, J Dris, M Dulinski, W Dzhelyadin, R Edwards, DN Eek, LO Eerola, PAM Ekelof, T Ekspong, G Engel, JP Falaleev, V Fenyuk, A Alonzo, MF Ferrer, A Ferroni, S Filippas, TA Firestone, A Foeth, H Fokitis, E Folegati, P Fontanelli, F Forsbach, H Franek, B Fransson, KE Frenkiel, P Fries, DC Frodesen, AG Fruhwirth, R Fulda-Quenzer, F Furstenau, H Fuster, J Gago, JM Galeazzi, G Gamba, D Garcia, J Gasparini, U Gavillet, P Gawne, S Gazis, EN Giacomelli, P Glitza, KW Gokieli, R Golovatyuk, VM Cadenas, JJGY Goobar, A Gopal, G Gorski, M Gouz, Y Gracco, V Grant, A Grard, F Graziani, E Gros, MH Grosdidier, G Grossetete, B Gumenyuk, S Guy, J Hahn, F Hahn, M Haider, S Hajduk, Z Hakansson, A Hallgren, A Hamacher, K De Monchenault, GH Harris, FJ Heck, B Herbst, I Hernandez, JJ Herquet, P Herr, H Higon, E Hilke, HJ Hodgson, SD Hofmokl, T Holmes, R Holmgren, SO Hooper, JE Houlden, M Hrubec, J Hulth, PO Hultqvist, K Husson, D Hyams, BD Ioannou, P Iversen, PS Jackson, JN Jalocha, P Jarlskog, G Jarry, P Jean-Marie, B Johansson, EK Jonker, M Jonsson, L Juillot, P Kadyrov, RB Kalkanis, G Kalmus, G Kantardjian, G Kapusta, F Kapusta, P Katsanevas, S Katsoufis, EC Keranen, R Kesteman, J Khomenko, BA King, B Kjaer, NJ Klein, H Klempt, W Klovning, A Kluit, P Koehne, JH Koene, B Kokkinias, P Kopf, M Koratzinos, M Korcyl, K Korytov, AV Korzen, B Kourkoumelis, C Kreuzberger, T Kreuzberger, J Kruener-Marquis, U Krupinski, W Kucewicz, W Kurvinen, K Laakso, MI Lambropoulos, C Lamsa, JW Lanceri, L Lapin, V Laugier, JP Lauhakangas, R Laurikainen, P Leder, G Ledroit, F Lemonne, J Lenzen, G Lepeltier, V Letessier-Selvon, A Lieb, E Lillestol, E Lillethun, E Lindgren, J Lippi, I Llosa, R Lokajicek, M Loken, JG Aguera, MAL Lopez-Fernandez, A Loukas, D Lozano, JJ Lucock, R Lund-Jensen, B Lutz, P Lyons, L Maehlum, G Magnussen, N Maillard, J Maltezos, A Mandl, F Marco, J Marin, JC Markou, A Mathis, L Matorras, F Matteuzzi, C Matthiae, G Mazzucato, M Mc Cubbin, M Mc Kay, R Menichetti, E Meroni, C Meyer, WT Mitaroff, WA Mitselmakher, GV Mjoernmark, U Moa, T Moeller, R Moenig, K Monge, MR Morettini, P Mueller, H Muller, H Myatt, G Naraghi, F Nau-Korzen, U Navarria, FL Negri, P Nielsen, BS Nikolaenko, V Obraztsov, V Orava, R Ostankov, A Ouraou, A Pain, R Palka, H Papadopoulou, T Pape, L Passeri, A Pegoraro, M Perevozchikov, V Pernicka, M Perrotta, A Pimenta, M Pingot, O Pinori, C Pinsent, A Pol, ME Poliakov, B Polok, G Poropat, P Privitera, P Pullia, A Pyyhtia, J Rademakers, AA Radojicic, D Ragazzi, S Range, WH Ratoff, PN Read, AL Redaelli, NG Regler, M Reid, D Renton, PB Resvanis, LK Richard, F Ridky, J Rinaudo, G Roditi, I Romero, A Ronchese, P Rosenberg, EI Rossi, U Rosso, E Roudeau, P Rovelli, T Ruhlmann, V Ruiz, A Saarikko, H Sacquin, Y Sanchez, E Sanchez, J Sanchis, E Sannino, M Schaeffer, M Schneider, H Scuri, F Sebastia, A Segar, AM Sekulin, R Sessa, M Sette, G Seufert, R Shellard, RC Siegrist, P Simonetti, S Simonetto, F Sissakian, AN Skaali, TB Skeens, J Skjevling, G Smadja, G Smirnov, NE Smith, GR Sosnowski, R Spang, K Spassoff, T Spiriti, E Squaricia, S Staeck, H Stanescu, C Stavropoulos, G Stichelbaut, F Stocchi, A Strauss, J Strub, R Stubenrauch, CJ Szczekowski, M Szeptycka, M Szymanski, P Tavernier, S Theodosiou, G Tilquin, A Timmermans, J Timofeev, VG Tkatchev, LG Toet, DZ Topphol, AK Tortora, L Trainor, MT Treille, D Trevisan, U Tristram, G Troncon, C Tsirou, A Tsyganov, EN Turala, M Turchetta, R Turluer, ML Tuuva, T Tyapkin, IA Tyndel, M Tzamarias, S Udo, F Ueberschaer, S Uvarov, VA Valenti, G Vallazza, E Ferrer, JAV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eijndhoven, N Vander Velde, C Varela, J Vaz, P Vegni, G Velasco, J Ventura, L Venus, W Verbeure, F Vertogradov, LS Vibert, L Vilanova, D Vlasov, EV Vodopyanov, AS Vollmer, M Voulgaris, G Voutilainen, M Vrba, V Wahlen, H Walck, C Waldner, F Wayne, M Wehr, A Weilhammer, P Werner, J Wetherell, AM Wickens, JH Wikne, J Wilkinson, GR Williams, WSC Winter, M Wormald, D Wormser, G Woschnagg, K Yamdagni, N Yepes, P Zaitsev, A Zalewska, A Zalewski, P Zarubin, PI Zevgolatakos, E Zhang, G Zimin, NI Zitoun, R Funchal, RZ Zumerle, G Zuniga, J CA DELPHI Collaboration TI ENERGY ENERGY CORRELATIONS IN HADRONIC FINAL-STATES FROM Z0 DECAYS SO PHYSICS LETTERS B LA English DT Article ID STRONG-COUPLING-CONSTANT; ELECTRON-POSITRON ANNIHILATION; LUND MONTE-CARLO; FREE PERTURBATION-THEORY; 2ND ORDER QCD; E+E-ANNIHILATION; QUANTUM CHROMODYNAMICS; ALPHA-S; FRAGMENTATION MODELS; JET FRAGMENTATION AB We have studied the energy-energy angular correlations in hadronic final states from Z0 decay using the DELPHI detector at LEP. From a comparison with Monte Carlo calculations based on the exact second order QCD matrix element and string fragmentation we find that Lambda-MS(5) = 104(-20)+25(stat.)-20(+25)(syst.)-00(+30)(theor.) MeV, which corresponds to alpha-s(91 GeV) = 0.106 +/- 0.003(stat.) +/- 0.003(syst.)-0.000(+0.003)(theor.). The theoretical error stems from different choices for the renormalization scale of alpha-s. In the Monte Carlo simulation the scale of alphA-s as well as the fragmentation parameters have been optimized to described reasonably well as aspects of multihadron production. C1 LAB INSTRUMENTACAO & FIS EXPTL PARTICULAS, P-1000 LISBON, PORTUGAL. Osterreich Akad Wissensch, Inst Hochenergiephys, A-1050 Vienna, AUSTRIA. CEN Saclay, DPhPE, F-91191 Gif Sur Yvette, FRANCE. Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, ENGLAND. Joint Inst Nucl Res, SU-101000 Moscow, RUSSIA. Ctr Mixto Univ Valencia CSIC, Inst Fis Corpuscular IFIC, E-46100 Burjassot, Valencia, SPAIN. Univ Lund, Dept Phys, S-22363 Lund, SWEDEN. Univ Bergen, Dept Phys, N-5007 Bergen, NORWAY. CERN, CH-1211 Geneva 23, SWITZERLAND. Univ Athens, Phys Lab, GR-10680 Athens, GREECE. Univ Karlsruhe, Inst Expt Kernphys, W-7500 Karlsruhe 1, GERMANY. Univ Stockholm, Inst Phys, S-11346 Stockholm, SWEDEN. Univ Paris 06, LPNHE, F-75230 Paris 05, FRANCE. Univ Paris 07, F-75230 Paris 05, FRANCE. Univ Paris Sud, Lab Accelerateur Lineaire, F-91405 Orsay, FRANCE. Univ Trieste, Dipartimento Fis, I-34127 Trieste, ITALY. Ist Nazl Fis Nucl, I-34127 Trieste, ITALY. Univ Udine, Ist Fis, I-33100 Udine, ITALY. Ist Nazl Fis Nucl, Ist Super Sanita, I-00161 Rome, ITALY. Univ Rome 2, Dipartimento Fis, I-00173 Rome, ITALY. Ist Nazl Fis Nucl, I-00173 Rome, ITALY. Univ Oxford, Nucl Phys Lab, Oxford OX1 3RH, ENGLAND. Univ Wuppertal, Fach Phys, W-5600 Wuppertal 1, GERMANY. Coll France, Lab Phys Corpusculaire, F-75231 Paris 5, FRANCE. Inst High Energy Phys, SU-142284 Protvino, Moscow Region, RUSSIA. Nucl Res Ctr Demokritos, Greek Atom Energy Commis, GR-15310 Aghia Paraskevi, GREECE. CRN Grp DELPHI, Div Hautes Energies, F-67037 Strasbourg, FRANCE. LEPSI, F-67037 Strasbourg, FRANCE. Univ Instelling Antwerpen, Phys Dept, B-2610 Wilrijk, BELGIUM. ULB VUB, IIHE, B-1050 Brussels, BELGIUM. Univ Etat Mons, Fac Sci, Serv Phys Particules Elementaires, B-7000 Mons, BELGIUM. Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, ENGLAND. Univ Turin, Dipartimento Fis Sperimantale, I-10125 Turin, ITALY. Ist Nazl Fis Nucl, I-10125 Turin, ITALY. Univ Bologna, Dipartimento Fis, I-40126 Bologna, ITALY. Ist Nazl Fis Nucl, I-40126 Bologna, ITALY. NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS. Univ Milan, Dipartimento Fis, I-20133 Milan, ITALY. Ist Nazl Fis Nucl, I-20133 Milan, ITALY. Univ Uppsala, Dept Radiat Sci, S-75121 Uppsala, SWEDEN. Univ Genoa, Dipartimento Fis, I-16146 Genoa, ITALY. Ist Nazl Fis Nucl, I-16146 Genoa, ITALY. Univ Helsinki, Dept High Energy Phys, SF-00170 Helsinki 17, FINLAND. Univ Oslo, Phys Dept, N-1000 Oslo 3, NORWAY. Univ Santander, Fac Ciencias, E-39005 Santander, SPAIN. Univ Padua, Dipartimento Fis, I-35131 Padua, ITALY. Ist Nazl Fis Nucl, I-35131 Padua, ITALY. Iowa State Univ, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Phys, Ames, IA 50011 USA. Niels Bohr Inst, DK-2100 Copenhagen O, DENMARK. Inst Nucl Studies, PL-00681 Warsaw, POLAND. Univ Warsaw, PL-00681 Warsaw, POLAND. Natl Tech Univ, Phys Dept, GR-15773 Athens, GREECE. Inst Nucl Phys, High Energy Phys Lab, PL-30055 Krakow 30, POLAND. RP LAB INSTRUMENTACAO & FIS EXPTL PARTICULAS, AV ELIAS GARCIA 14-LE, P-1000 LISBON, PORTUGAL. RI Gomez Cadenas, Juan Jose/L-2003-2014; Varela, Joao/K-4829-2016; Ruiz, Alberto/E-4473-2011; Zaitsev, Alexandre/B-8989-2017; Pimenta, Mario/M-1741-2013; Monge, Maria Roberta/G-9127-2012; Zuniga, Juan/P-4385-2014; Abreu, Pedro/L-2220-2014; Barao, Fernando/O-2357-2016; Matorras, Francisco/I-4983-2015; Vaz, Pedro/K-2464-2013; Ferrer, Antonio/H-2942-2015; Ragazzi, Stefano/D-2463-2009; Rovelli, Tiziano/K-4432-2015; Lozano-Bahilo, Julio/F-4881-2016; SANCHIS, ENRIQUE/J-7348-2016; Hernandez-Rey, Juan Jose/N-5955-2014 OI Gomez Cadenas, Juan Jose/0000-0002-8224-7714; Varela, Joao/0000-0003-2613-3146; De Lotto, Barbara/0000-0003-3624-4480; Benlloch Baviera, Jose Maria/0000-0001-6073-1436; Contreras Gonzalez, Jose Luis/0000-0001-7282-2394; Ruiz, Alberto/0000-0002-3639-0368; Zaitsev, Alexandre/0000-0002-4961-8368; Pimenta, Mario/0000-0002-2590-0908; 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; De Angelis, Alessandro/0000-0002-3288-2517; Monge, Maria Roberta/0000-0003-1633-3195; Zuniga, Juan/0000-0002-1041-6451; Abreu, Pedro/0000-0002-9973-7314; Barao, Fernando/0000-0002-8346-9941; Matorras, Francisco/0000-0003-4295-5668; Vaz, Pedro/0000-0002-7186-2359; Ferrer, Antonio/0000-0003-0532-711X; Ragazzi, Stefano/0000-0001-8219-2074; Rovelli, Tiziano/0000-0002-9746-4842; Lozano-Bahilo, Julio/0000-0003-0613-140X; SANCHIS, ENRIQUE/0000-0002-9689-9131; Hernandez-Rey, Juan Jose/0000-0002-1527-7200 NR 44 TC 45 Z9 45 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 EI 1873-2445 J9 PHYS LETT B JI Phys. Lett. B PD DEC 6 PY 1990 VL 252 IS 1 BP 149 EP 158 DI 10.1016/0370-2693(90)91097-U PG 10 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300030 ER PT J AU MISHRA, SR BACHMANN, KT BLAIR, RE FOUDAS, C KING, BJ LEFMANN, WC LEUNG, WC OLTMAN, E QUINTAS, PZ RABINOWITZ, SA SCIULLI, FJ SELIGMAN, B SHAEVITZ, MH SMITH, WH MERRITT, FS OREGLIA, MJ SCHUMM, BA BERNSTEIN, RH BORCHERDING, F FISK, HE LAMM, MJ MARSH, W MERRITT, KWB SCHELLMAN, H YOVANOVITCH, DD BODEK, A BUDD, HS DEBARBARO, P SAKUMOTO, WK AF MISHRA, SR BACHMANN, KT BLAIR, RE FOUDAS, C KING, BJ LEFMANN, WC LEUNG, WC OLTMAN, E QUINTAS, PZ RABINOWITZ, SA SCIULLI, FJ SELIGMAN, B SHAEVITZ, MH SMITH, WH MERRITT, FS OREGLIA, MJ SCHUMM, BA BERNSTEIN, RH BORCHERDING, F FISK, HE LAMM, MJ MARSH, W MERRITT, KWB SCHELLMAN, H YOVANOVITCH, DD BODEK, A BUDD, HS DEBARBARO, P SAKUMOTO, WK TI INVERSE MUON DECAY, NU-MU+E-]MU- + NU-E, AT THE FERMILAB TEVATRON SO PHYSICS LETTERS B LA English DT Article ID NEUTRINO; ENERGY AB We report an improved measurement of the inverse muon decay process, v-mu +/- e --> mu- + V(e), at the Fermilab Tevatron. The rate of this reaction with respect to the v-mu-N charged current interaction is measured to be (0.1245 +/- 0.0057(stat.) +/- 0.0031(sys.)) x 10(-2). The measurement confirms the standard model predictions for the Lorentz structure of the weak current, the helicity of the neutrino, and the energy dependence of the cross section. C1 UNIV CHICAGO,CHICAGO,IL 60637. FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. UNIV ROCHESTER,ROCHESTER,NY 14627. RP MISHRA, SR (reprint author), COLUMBIA UNIV,NEW YORK,NY 10027, USA. NR 21 TC 26 Z9 26 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 DEC 6 PY 1990 VL 252 IS 1 BP 170 EP 176 DI 10.1016/0370-2693(90)91099-W PG 7 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300032 ER PT J AU KRAKAUER, DA TALAGA, RL ALLEN, RC CHEN, HH HAUSAMMANN, R LEE, WP LU, XQ MAHLER, HJ WANG, KC BOWLES, TJ BURMAN, RL CARLINI, RD COCHRAN, DRF DOE, PJ FRANK, JS POTTER, ME SANDBERG, VD PIASETZKY, E AF KRAKAUER, DA TALAGA, RL ALLEN, RC CHEN, HH HAUSAMMANN, R LEE, WP LU, XQ MAHLER, HJ WANG, KC BOWLES, TJ BURMAN, RL CARLINI, RD COCHRAN, DRF DOE, PJ FRANK, JS POTTER, ME SANDBERG, VD PIASETZKY, E TI LIMITS ON THE NEUTRINO MAGNETIC-MOMENT FROM A MEASUREMENT OF NEUTRINO ELECTRON ELASTIC-SCATTERING SO PHYSICS LETTERS B LA English DT Article ID SN1987A AB Upper bounds on the magnetic moments of muon neutrinos and electron neutrinos are inferred from a measurement of neutrino-electron elastic scattering. The limits obtained are: mu-v(e) < 10.8 x 10(-10) mu-Bohr (90% CL) and mu-v-mu < 7.4 x 10(-10) mu-Bohr (90% CL). C1 UNIV MARYLAND,COLLEGE PK,MD 20742. UNIV CALIF IRVINE,IRVINE,CA 92717. UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545. TEL AVIV UNIV,RAYMOND & BEVERLY SACKLER FAC EXACT SCI,SCH PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL. RP KRAKAUER, DA (reprint author), ARGONNE NATL LAB,ARGONNE,IL 60439, USA. NR 25 TC 70 Z9 70 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD DEC 6 PY 1990 VL 252 IS 1 BP 177 EP 180 DI 10.1016/0370-2693(90)91100-P PG 4 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EP373 UT WOS:A1990EP37300033 ER PT J AU SUGAMA, T KUKACKA, LE CARCIELLO, N AF SUGAMA, T KUKACKA, LE CARCIELLO, N TI CEMENT HYDRATE CATALYZED-HYDROLYSIS OF POLYIMIDE LIGHTWEIGHT MATERIALS SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article RP SUGAMA, T (reprint author), BROOKHAVEN NATL LAB,DEPT APPL SCI,DIV PROC SCI,UPTON,NY 11973, USA. NR 22 TC 2 Z9 2 U1 1 U2 5 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0021-8995 J9 J APPL POLYM SCI JI J. Appl. Polym. Sci. PD DEC 5 PY 1990 VL 40 IS 11-12 BP 1857 EP 1870 DI 10.1002/app.1990.070401105 PG 14 WC Polymer Science SC Polymer Science GA DM196 UT WOS:A1990DM19600005 ER PT J AU BALDWIN, DP HILL, EJ FIELD, RW AF BALDWIN, DP HILL, EJ FIELD, RW TI ELECTRON-AFFINITY OF O- AND DIABATIC CAO(G) INTEGER CHARGE POTENTIAL CURVES SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article C1 MIT,GEORGE R HARRISON SPECT LAB,CAMBRIDGE,MA 02139. SANDIA NATL LABS,DEPT CHEM,ALBUQUERQUE,NM 87185. NR 33 TC 21 Z9 21 U1 0 U2 4 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 DEC 5 PY 1990 VL 112 IS 25 BP 9156 EP 9161 DI 10.1021/ja00181a019 PG 6 WC Chemistry, Multidisciplinary SC Chemistry GA EL770 UT WOS:A1990EL77000019 ER PT J AU THOMAS, LL KIM, JH COTTON, TM AF THOMAS, LL KIM, JH COTTON, TM TI COMPARATIVE-STUDY OF RESONANCE RAMAN AND SURFACE-ENHANCED RESONANCE RAMAN CHLOROPHYLL-A SPECTRA USING SORET AND RED EXCITATION SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article C1 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011. IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011. NR 61 TC 50 Z9 50 U1 1 U2 6 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 DEC 5 PY 1990 VL 112 IS 25 BP 9378 EP 9386 DI 10.1021/ja00181a046 PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA EL770 UT WOS:A1990EL77000046 ER PT J AU KIM, DH BRITT, RD KLEIN, MP SAUER, K AF KIM, DH BRITT, RD KLEIN, MP SAUER, K TI THE G = 4.1 EPR SIGNAL OF THE S2 STATE OF THE PHOTOSYNTHETIC OXYGEN-EVOLVING COMPLEX ARISES FROM A MULTINUCLEAR MN CLUSTER SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note C1 UNIV CALIF DAVIS,DEPT CHEM,DAVIS,CA 95616. UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720. LAWRENCE BERKELEY LAB,CHEM BIODYNAM LAB,BERKELEY,CA 94720. NR 20 TC 90 Z9 90 U1 0 U2 6 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 DEC 5 PY 1990 VL 112 IS 25 BP 9389 EP 9391 DI 10.1021/ja00181a049 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA EL770 UT WOS:A1990EL77000049 ER PT J AU BESMANN, TM SHELDON, BW KASTER, MD AF BESMANN, TM SHELDON, BW KASTER, MD TI TEMPERATURE AND CONCENTRATION-DEPENDENCE OF SIC DEPOSITION ON NICALON FIBERS SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 17TH INTERNATIONAL CONF ON METALLURGICAL COATINGS / 8TH INTERNATIONAL CONF ON THIN FILMS CY APR 02-06, 1990 CL SAN DIEGO, CA SP AMER VACUUM SOC, DIV VACUUM MET, INT UNION VACUUM SCI, DIV THIN FILM ID CHEMICAL VAPOR INFILTRATION AB Chemical vapor infiltration of Nicalon(TM) fiber bundles (approximately 500 filaments) was studied using methyltrichlorosilane to form the SiC matrix. The operating conditions were chosen to simulate those used in composite fabrication. It was determined that the deposition reaction has an activation energy of 66 +/- 20 kJ mol-1 and is first order with respect to reactant concentration. RP BESMANN, TM (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 17 TC 21 Z9 23 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC 5 PY 1990 VL 43-4 IS 1-3 BP 167 EP 175 DI 10.1016/0257-8972(90)90071-J PG 9 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA EP995 UT WOS:A1990EP99500020 ER PT J AU GOURLEY, PL AF GOURLEY, PL TI LASING PHASE-DIAGRAM FOR SEMICONDUCTOR SURFACE-EMITTING LASERS SO APPLIED PHYSICS LETTERS LA English DT Article RP GOURLEY, PL (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 21 TC 7 Z9 7 U1 1 U2 1 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 DEC 3 PY 1990 VL 57 IS 23 BP 2410 EP 2412 DI 10.1063/1.103861 PG 3 WC Physics, Applied SC Physics GA EK726 UT WOS:A1990EK72600007 ER PT J AU SEGUY, P YU, PY LI, MF LEON, R CHAN, KT AF SEGUY, P YU, PY LI, MF LEON, R CHAN, KT TI EFFECT OF LIGHT ON THE DX CENTERS IN SI-DOPED AND TE-DOPED GAALAS SO APPLIED PHYSICS LETTERS LA English DT Article C1 LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. HEWLETT PACKARD CORP,DIV MICROWAVE TECHNOL,SANTA ROSA,CA 95403. RP SEGUY, P (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720, USA. NR 11 TC 5 Z9 5 U1 0 U2 0 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 DEC 3 PY 1990 VL 57 IS 23 BP 2469 EP 2471 DI 10.1063/1.103854 PG 3 WC Physics, Applied SC Physics GA EK726 UT WOS:A1990EK72600027 ER PT J AU FENDORF, M BURMESTER, CP WILLE, LT GRONSKY, R AF FENDORF, M BURMESTER, CP WILLE, LT GRONSKY, R TI COPPER-OXYGEN INTERCALATION AND RELATED PHASE-TRANSFORMATIONS IN YBACUO SO APPLIED PHYSICS LETTERS LA English DT Article C1 LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. RP FENDORF, M (reprint author), UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720, USA. NR 17 TC 12 Z9 12 U1 0 U2 0 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 DEC 3 PY 1990 VL 57 IS 23 BP 2481 EP 2483 DI 10.1063/1.103836 PG 3 WC Physics, Applied SC Physics GA EK726 UT WOS:A1990EK72600031 ER PT J AU MEARS, CA HU, Q RICHARDS, PL WORSHAM, AH PROBER, DE RAISANEN, AV AF MEARS, CA HU, Q RICHARDS, PL WORSHAM, AH PROBER, DE RAISANEN, AV TI QUANTUM-LIMITED HETERODYNE-DETECTION OF MILLIMETER WAVES USING SUPERCONDUCTING TANTALUM TUNNEL-JUNCTIONS SO APPLIED PHYSICS LETTERS LA English DT Article C1 LAWRENCE BERKELEY LAB, DIV MAT & CHEM SCI, BERKELEY, CA 94720 USA. YALE UNIV, DEPT APPL PHYS, NEW HAVEN, CT 06520 USA. HELSINKI UNIV TECHNOL, RADIO LAB, SF-02150 ESPOO, FINLAND. RP UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA. RI Raisanen, Antti/G-2405-2013 NR 17 TC 15 Z9 15 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 3 PY 1990 VL 57 IS 23 BP 2487 EP 2489 DI 10.1063/1.104111 PG 3 WC Physics, Applied SC Physics GA EK726 UT WOS:A1990EK72600033 ER PT J AU WANG, H HERMAN, H WIESMANN, HJ ZHU, Y XU, YW SABATINI, RL SUENAGA, M AF WANG, H HERMAN, H WIESMANN, HJ ZHU, Y XU, YW SABATINI, RL SUENAGA, M TI TEXTURE GROWTH PROCESSING OF PLASMA-SPRAYED Y-BA-CU-O SUPERCONDUCTING DEPOSITS SO APPLIED PHYSICS LETTERS LA English DT Article C1 BROOKHAVEN NATL LAB,UPTON,NY 11973. RP WANG, H (reprint author), SUNY STONY BROOK,STONY BROOK,NY 11794, USA. NR 11 TC 15 Z9 15 U1 0 U2 0 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 DEC 3 PY 1990 VL 57 IS 23 BP 2495 EP 2497 DI 10.1063/1.103838 PG 3 WC Physics, Applied SC Physics GA EK726 UT WOS:A1990EK72600036 ER PT J AU BOETTGER, JC TRICKEY, SB MULLERPLATHE, F DIERCKSEN, GHF AF BOETTGER, JC TRICKEY, SB MULLERPLATHE, F DIERCKSEN, GHF TI MONOLAYER AND DILAYER MODIFICATIONS OF LITHIUM LATTICE-PARAMETERS SO JOURNAL OF PHYSICS-CONDENSED MATTER LA English DT Article C1 MAX PLANCK INST PHYS & ASTROPHYS, INST ASTROPHYS, W-8046 GARCHING, GERMANY. UNIV FLORIDA, DEPT PHYS, QUANTUM THEORY PROJECT, GAINESVILLE, FL 32611 USA. UNIV FLORIDA, DEPT CHEM, QUANTUM THEORY, GAINESVILLE, FL 32611 USA. RP BOETTGER, JC (reprint author), UNIV CALIF LOS ALAMOS SCI LAB, DIV THEORET, LOS ALAMOS, NM 87545 USA. RI Muller-Plathe, Florian/A-1922-2010 NR 53 TC 13 Z9 13 U1 0 U2 0 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 DEC 3 PY 1990 VL 2 IS 48 BP 9589 EP 9601 DI 10.1088/0953-8984/2/48/012 PG 13 WC Physics, Condensed Matter SC Physics GA EM422 UT WOS:A1990EM42200012 ER PT J AU MORETTO, LG BLUMENFELD, Y CHARITY, RJ WOZNIAK, GJ AF MORETTO, LG BLUMENFELD, Y CHARITY, RJ WOZNIAK, GJ TI BINARY AND MULTIFRAGMENT DECAY OF VERY HOT NUCLEI SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT INTERNATIONAL WORKSHOP ON NUCLEAR DYNAMICS CY APR 02-07, 1990 CL ELBA INT PHYS CTR, ELBA ISLAND, ITALY SP IST NAZL FIS NUCL, UNIV TRENTO HO ELBA INT PHYS CTR RP MORETTO, LG (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL MED,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 14 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 3 PY 1990 VL 519 IS 1-2 BP C183 EP C196 PG 14 WC Physics, Nuclear SC Physics GA EM843 UT WOS:A1990EM84300016 ER PT J AU PLASIL, F AF PLASIL, F TI NUCLEUS-NUCLEUS COLLISIONS AT 60 TO 200 GEV NUCLEON - RESULTS FROM THE WA80 EXPERIMENT AT CERN SO NUCLEAR PHYSICS A LA English DT Article RP PLASIL, F (reprint author), OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA. NR 15 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9474 EI 1873-1554 J9 NUCL PHYS A JI Nucl. Phys. A PD DEC 3 PY 1990 VL 519 IS 1-2 BP C449 EP C462 PG 14 WC Physics, Nuclear SC Physics GA EM843 UT WOS:A1990EM84300039 ER PT J AU WEBER, F WEIGEL, M AF WEBER, F WEIGEL, M TI SOME ASPECTS OF THE RELATIVISTIC MANY-BODY THEORY OF BARYONIC SYSTEMS SO NUCLEAR PHYSICS A LA English DT Article; Proceedings Paper CT INTERNATIONAL WORKSHOP ON NUCLEAR DYNAMICS CY APR 02-07, 1990 CL ELBA INT PHYS CTR, ELBA ISLAND, ITALY SP IST NAZL FIS NUCL, UNIV TRENTO HO ELBA INT PHYS CTR C1 UNIV MUNICH,SEKT PHYS,W-8046 GARCHING,GERMANY. RP WEBER, F (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720, USA. NR 12 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 DEC 3 PY 1990 VL 519 IS 1-2 BP C303 EP C310 PG 8 WC Physics, Nuclear SC Physics GA EM843 UT WOS:A1990EM84300027 ER PT J AU NIR, Y SILVERMAN, D AF NIR, Y SILVERMAN, D TI EXPLORING NEW PHYSICS WITH CP ASYMMETRIES IN B0 DECAYS SO NUCLEAR PHYSICS B LA English DT Article C1 UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92717. RP NIR, Y (reprint author), STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305, USA. NR 20 TC 83 Z9 83 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 DEC 3 PY 1990 VL 345 IS 2-3 BP 301 EP 311 DI 10.1016/0550-3213(90)90388-T PG 11 WC Physics, Particles & Fields SC Physics GA ED184 UT WOS:A1990ED18400001 ER PT J AU FONT, A IBANEZ, LE QUEVEDO, F AF FONT, A IBANEZ, LE QUEVEDO, F TI HIGHER-LEVEL KAC-MOODY STRING MODELS AND THEIR PHENOMENOLOGICAL IMPLICATIONS SO NUCLEAR PHYSICS B LA English DT Article C1 CERN,CH-1211 GENEVA 23,SWITZERLAND. UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87544. RP FONT, A (reprint author), UNIV CENT VENEZUELA,DEPT FIS,APTDO 20513,CARACAS 1020-A,VENEZUELA. NR 60 TC 105 Z9 105 U1 0 U2 1 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 DEC 3 PY 1990 VL 345 IS 2-3 BP 389 EP 430 DI 10.1016/0550-3213(90)90393-R PG 42 WC Physics, Particles & Fields SC Physics GA ED184 UT WOS:A1990ED18400006 ER PT J AU HALPERN, MB OBERS, NA AF HALPERN, MB OBERS, NA TI UNITARY IRRATIONAL CENTRAL CHARGE ON COMPACT G - HIGH-LEVEL ANALYSIS AND SU(3)=BASIC SO NUCLEAR PHYSICS B LA English DT Article C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV PHYS,THEORET PHYS GRP,BERKELEY,CA 94720. RP HALPERN, MB (reprint author), UNIV CALIF BERKELEY,DEPT PHYS,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. RI Obers, Niels/D-1377-2014 OI Obers, Niels/0000-0003-4947-8526 NR 51 TC 23 Z9 23 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 DEC 3 PY 1990 VL 345 IS 2-3 BP 607 EP 644 DI 10.1016/0550-3213(90)90402-Y PG 38 WC Physics, Particles & Fields SC Physics GA ED184 UT WOS:A1990ED18400015 ER PT J AU BRANDSTAETER, F KRONFELD, AS SCHIERHOLZ, G AF BRANDSTAETER, F KRONFELD, AS SCHIERHOLZ, G TI CRITICAL SIGNAL-TO-NOISE RATIO AND GLUEBALL MASS CALCULATIONS SO NUCLEAR PHYSICS B LA English DT Article C1 FERMI NATL ACCELERATOR LAB,THEORET PHYS GRP,BATAVIA,IL 60510. DESY,W-2000 HAMBURG 52,GERMANY. RP BRANDSTAETER, F (reprint author), KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,HOCHSTLEISTUNGSRECHENZENTRUM,THEORIE ELEMENTARTEILCHEN GRP,W-7500 KARLSRUHE 1,GERMANY. NR 44 TC 8 Z9 8 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 DEC 3 PY 1990 VL 345 IS 2-3 BP 709 EP 729 DI 10.1016/0550-3213(90)90406-4 PG 21 WC Physics, Particles & Fields SC Physics GA ED184 UT WOS:A1990ED18400019 ER PT J AU LEVIATAN, A GINOCCHIO, JN KIRSON, MW AF LEVIATAN, A GINOCCHIO, JN KIRSON, MW TI PROTON-NEUTRON DEFORMATIONS AND F-SPIN SYMMETRY IN NUCLEI SO PHYSICAL REVIEW LETTERS LA English DT Article C1 WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL. RP LEVIATAN, A (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA. NR 17 TC 27 Z9 27 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 DEC 3 PY 1990 VL 65 IS 23 BP 2853 EP 2856 DI 10.1103/PhysRevLett.65.2853 PG 4 WC Physics, Multidisciplinary SC Physics GA EK724 UT WOS:A1990EK72400006 ER PT J AU FREDRICKSON, ED MCGUIRE, K CAVALLO, A BUDNY, R JANOS, A MONTICELLO, D NAGAYAMA, Y PARK, W TAYLOR, G ZARNSTORFF, MC AF FREDRICKSON, ED MCGUIRE, K CAVALLO, A BUDNY, R JANOS, A MONTICELLO, D NAGAYAMA, Y PARK, W TAYLOR, G ZARNSTORFF, MC TI BALLISTIC CONTRIBUTIONS TO HEAT-PULSE PROPAGATION IN THE TFTR TOKAMAK SO PHYSICAL REVIEW LETTERS LA English DT Article RP FREDRICKSON, ED (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,PRINCETON,NJ 08544, USA. NR 23 TC 76 Z9 76 U1 1 U2 4 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 3 PY 1990 VL 65 IS 23 BP 2869 EP 2872 DI 10.1103/PhysRevLett.65.2869 PG 4 WC Physics, Multidisciplinary SC Physics GA EK724 UT WOS:A1990EK72400010 ER PT J AU TANG, PTP AF TANG, PTP TI TABLE-DRIVEN IMPLEMENTATION OF THE LOGARITHM FUNCTION IN IEEE FLOATING-POINT ARITHMETIC SO ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE LA English DT Article DE ALGORITHMS; IEEE ARITHMETIC; ERROR ANALYSIS; IMPLEMENTATION; LOGARITHM FUNCTION AB Algorithms and implementation details for the logarithm functions in both single and double precision of IEEE 754 arithmetic are presented here. With a table of moderate size, the implementations need only working-precision arithmetic and are provably accurate to within 0.57 ulp. C1 ARGONNE NATL LAB,DIV MATH & COMP SCI,ARGONNE,IL 60439. NR 9 TC 25 Z9 25 U1 0 U2 2 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036 SN 0098-3500 J9 ACM T MATH SOFTWARE JI ACM Trans. Math. Softw. PD DEC PY 1990 VL 16 IS 4 BP 378 EP 400 DI 10.1145/98267.98294 PG 23 WC Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA HB555 UT WOS:A1990HB55500005 ER PT J AU AMOS, DE AF AMOS, DE TI REMARK ON ALGORITHM-644 SO ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE LA English DT Note C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. NR 1 TC 12 Z9 12 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036 SN 0098-3500 J9 ACM T MATH SOFTWARE JI ACM Trans. Math. Softw. PD DEC PY 1990 VL 16 IS 4 BP 404 EP 404 DI 10.1145/98267.98299 PG 1 WC Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA HB555 UT WOS:A1990HB55500007 ER PT J AU GARBOW, BS LYNESS, JN AF GARBOW, BS LYNESS, JN TI REMARK ON ALGORITHM-662 SO ACM TRANSACTIONS ON MATHEMATICAL SOFTWARE LA English DT Note C1 ARGONNE NATL LAB,DIV MATH & COMP SCI,ARGONNE,IL 60439. NR 1 TC 1 Z9 1 U1 1 U2 1 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036 SN 0098-3500 J9 ACM T MATH SOFTWARE JI ACM Trans. Math. Softw. PD DEC PY 1990 VL 16 IS 4 BP 405 EP 406 DI 10.1145/98267.98302 PG 2 WC Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA HB555 UT WOS:A1990HB55500008 ER PT J AU EPICIER, T OKEEFE, MA THOMAS, G AF EPICIER, T OKEEFE, MA THOMAS, G TI ATOMIC IMAGING OF 3-2 MULLITE SO ACTA CRYSTALLOGRAPHICA SECTION A LA English DT Article ID RESOLUTION ELECTRON-MICROSCOPY; INCOMMENSURATE STRUCTURE; AVERAGE STRUCTURE; SUPERSTRUCTURES; DIFFRACTION; VACANCY AB The crystallographic structure of 3Al2O3-2SiO2 mullite has been studied by means of high-resolution electron microscopy. The best conditions for atomic imaging of this compound are discussed relative to the atomic resolution microscope at Berkeley. [001] multibeam images have been produced at a resolution better than 0.19 nm, allowing the cation sublattice to be directly imaged, with a firm transfer of information on the oxygen sublattice. Under optimal conditions of defocus setting and thickness, typical contrasts have been detected and consistently interpreted in terms of the presence of oxygen vacancies along the defective atomic columns. These observations are discussed in relation to the currently accepted model for the average structure of mullite. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,NATL CTR ELECTRON MICROSCOPY,1 CYCLOTRON RD,BERKELEY,CA 94720. NR 28 TC 25 Z9 25 U1 2 U2 9 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-7673 J9 ACTA CRYSTALLOGR A JI Acta Crystallogr. Sect. A PD DEC 1 PY 1990 VL 46 BP 948 EP 962 DI 10.1107/S0108767390001118 PN 12 PG 15 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA ER357 UT WOS:A1990ER35700002 ER PT J AU JAUCH, W MCINTYRE, GJ SCHULTZ, AJ AF JAUCH, W MCINTYRE, GJ SCHULTZ, AJ TI SINGLE-CRYSTAL NEUTRON-DIFFRACTION STUDIES OF MNF2 AS A FUNCTION OF TEMPERATURE - THE EFFECT OF MAGNETOSTRICTION SO ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE LA English DT Article ID ANHARMONIC THERMAL VIBRATIONS AB MnF2 has been investigated at 295, 60 and 15 K by monochromatic neutron diffraction in order to determine the effect of antiferromagnetic order on the fluorine nuclear positional parameter. An internal displacement of 2.0(3) x 10(-3) angstrom is found between 295 and 15 K which is in excellent agreement with result obtained from single-crystal time-of-flight neutron diffraction. At 15 K there is a significant difference between the neutron and gamma-ray refined positional parameters. C1 INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE. ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439. ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439. RP JAUCH, W (reprint author), HAHN MEITNER INST KERNFORSCH BERLIN GMBH,GLIENICKER STR 100,W-1000 BERLIN 39,GERMANY. NR 11 TC 15 Z9 15 U1 1 U2 3 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-7681 J9 ACTA CRYSTALLOGR B JI Acta Crystallogr. Sect. B-Struct. Commun. PD DEC 1 PY 1990 VL 46 BP 739 EP 742 DI 10.1107/S0108768190008370 PN 6 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA EQ111 UT WOS:A1990EQ11100009 ER PT J AU STANLEY, JT FIELDS, CL PITTS, JR AF STANLEY, JT FIELDS, CL PITTS, JR TI SURFACE TREATING WITH SUNBEAMS SO ADVANCED MATERIALS & PROCESSES LA English DT Article C1 SOLAR ENERGY RES INST,1617 COLE BLVD,GOLDEN,CO 80401. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0026-0665 J9 ADV MATER PROCESS JI Adv. Mater. Process. PD DEC PY 1990 VL 138 IS 6 BP 16 EP 21 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA EK817 UT WOS:A1990EK81700003 ER PT J AU ROCKETT, IRH LIEBERMAN, ES HOLLINSHEAD, WH PUTNAM, SL THODE, HC AF ROCKETT, IRH LIEBERMAN, ES HOLLINSHEAD, WH PUTNAM, SL THODE, HC TI AGE, SEX, AND ROAD-USE PATTERNS OF MOTOR VEHICULAR TRAUMA IN RHODE-ISLAND - A POPULATION-BASED HOSPITAL EMERGENCY DEPARTMENT STUDY SO AMERICAN JOURNAL OF PUBLIC HEALTH LA English DT Article C1 BROOKHAVEN NATL LAB,INJURY PREVENT & ANAL GRP,UPTON,NY 11973. HARVARD UNIV,SCH PUBL HLTH,DEPT MATERNAL & CHILD HLTH,BOSTON,MA 02115. BRIGHAM & WOMENS HOSP,DEPT OBSTET & GYNECOL,BOSTON,MA 02115. UNIV TENNESSEE,HLTH SERV RES CTR,KNOXVILLE,TN 37996. RHODE ISL DEPT HLTH,DIV FAMILY HLTH,PROVIDENCE,RI. RP ROCKETT, IRH (reprint author), UNIV TENNESSEE,DEPT HLTH LEISURE & SAFETY,1914 ANDY HOLT AVE,KNOXVILLE,TN 37996, USA. RI Rockett, Ian/A-4709-2008 NR 12 TC 4 Z9 4 U1 0 U2 0 PU AMER PUBLIC HEALTH ASSN INC PI WASHINGTON PA 1015 FIFTEENTH ST NW, WASHINGTON, DC 20005 SN 0090-0036 J9 AM J PUBLIC HEALTH JI Am. J. Public Health PD DEC PY 1990 VL 80 IS 12 BP 1516 EP 1518 DI 10.2105/AJPH.80.12.1516 PG 3 WC Public, Environmental & Occupational Health SC Public, Environmental & Occupational Health GA EJ980 UT WOS:A1990EJ98000027 PM 2240347 ER PT J AU RAMSEY, R KATTI, AM GUIOCHON, G AF RAMSEY, R KATTI, AM GUIOCHON, G TI DISPLACEMENT CHROMATOGRAPHY APPLIED TO TRACE COMPONENT ANALYSIS SO ANALYTICAL CHEMISTRY LA English DT Article C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. UNIV TENNESSEE,DEPT CHEM ENGN,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 18 TC 24 Z9 25 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD DEC 1 PY 1990 VL 62 IS 23 BP 2557 EP 2565 DI 10.1021/ac00222a009 PG 9 WC Chemistry, Analytical SC Chemistry GA EK803 UT WOS:A1990EK80300011 ER PT J AU GRAVES, AB WHITE, E KOEPSELL, TD REIFLER, BV VANBELLE, G LARSON, EB RASKIND, M AF GRAVES, AB WHITE, E KOEPSELL, TD REIFLER, BV VANBELLE, G LARSON, EB RASKIND, M TI A CASE-CONTROL STUDY OF ALZHEIMERS-DISEASE SO ANNALS OF NEUROLOGY LA English DT Article C1 UNIV WASHINGTON,DEPT EPIDEMIOL,SEATTLE,WA 98105. UNIV WASHINGTON,DEPT BIOSTAT,SEATTLE,WA 98105. UNIV WASHINGTON,DEPT MED,SEATTLE,WA 98105. UNIV WASHINGTON,DEPT PSYCHIAT,SEATTLE,WA 98105. WAKE FOREST UNIV,BOWMAN GRAY SCH MED,WINSTON SALEM,NC 27103. RP GRAVES, AB (reprint author), UNIV WASHINGTON,BATTELLE SEATTLE RES CTR,4000 NE 41ST ST,SEATTLE,WA 98105, USA. NR 52 TC 168 Z9 173 U1 1 U2 6 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0364-5134 J9 ANN NEUROL JI Ann. Neurol. PD DEC PY 1990 VL 28 IS 6 BP 766 EP 774 DI 10.1002/ana.410280607 PG 9 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA EM764 UT WOS:A1990EM76400006 PM 2285263 ER PT J AU MYERS, WD SWIATECKI, WJ AF MYERS, WD SWIATECKI, WJ TI A THOMAS-FERMI MODEL OF NUCLEI .1. FORMULATION AND 1ST RESULTS SO ANNALS OF PHYSICS LA English DT Article ID MASS FORMULA; MATTER; SCATTERING; DENSITY RP MYERS, WD (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV NUCL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 27 TC 67 Z9 67 U1 0 U2 1 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 DEC PY 1990 VL 204 IS 2 BP 401 EP 431 DI 10.1016/0003-4916(90)90395-5 PG 31 WC Physics, Multidisciplinary SC Physics GA EP701 UT WOS:A1990EP70100006 ER PT J AU FAISON, BD CANCEL, CA LEWIS, SN ADLER, HI AF FAISON, BD CANCEL, CA LEWIS, SN ADLER, HI TI BINDING OF DISSOLVED STRONTIUM BY MICROCOCCUS-LUTEUS SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article RP FAISON, BD (reprint author), OAK RIDGE NATL LAB,DIV CHEM TECHNOL,OAK RIDGE,TN 37831, USA. NR 16 TC 21 Z9 21 U1 0 U2 1 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD DEC PY 1990 VL 56 IS 12 BP 3649 EP 3656 PG 8 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA EM073 UT WOS:A1990EM07300004 PM 16348370 ER PT J AU Hasharoni, K Levanon, H Bowman, MK Norris, JR Gust, D Moore, TA Moore, AL AF Hasharoni, K. Levanon, H. Bowman, M. K. Norris, J. R. Gust, D. Moore, T. A. Moore, A. L. TI Analysis of Time-Resolved CW-EPR Spectra of Short-Lived Radicals at Different Times After Laser Excitation SO APPLIED MAGNETIC RESONANCE LA English DT Article ID PARAMAGNETIC-RES SPECTROSCOPY; LIQUID-CRYSTAL; ELECTRON; POLARIZATION; PHOTOLYSIS AB Laser excitation combined with time-resolved CW-EPR spectroscopy of a carotenoid-porphyrin-diquinone tetrad (1), observes polarized spectra of the end quinone radical anion, Q(B)(center dot-). These spectra strongly depend on the time interval between the laser pulse and the position of the detection window of the transient magnetization profile, and may lead to misinterpretation of the radical intermediates participating in the reaction route. Spectral distortions arise from small hyperfine splittings and narrow line widths, resulting in the appearance of Torrey wiggles at off-resonance fields. The correct spectrum, however, and its line shape appear at times above 1 mu s after the laser pulse, and is in complete agreement with the Fourier transform EPR spectrum. Analysis and reconstruction of the transient spectra is carried out in Fourier conjugate space. The experimental spectra are shown to be the Fourier transform of the free-induction decay (FID) multiplied by an appropriate windowing function. The changes in the spectra taken at t < 1 mu s are due to line distortions and not to chemical processes. This treatment is of general applicability in the spectral analysis of time-resolved CW-EPR spectra. C1 [Hasharoni, K.; Levanon, H.] Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel. [Hasharoni, K.; Levanon, H.] Hebrew Univ Jerusalem, Farkas Ctr Light Induced Proc, IL-91904 Jerusalem, Israel. [Hasharoni, K.; Levanon, H.; Bowman, M. K.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. [Gust, D.; Moore, T. A.; Moore, A. L.] Arizona State Univ, Dept Chem, Tempe, AZ 85287 USA. RP Levanon, H (reprint author), Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel. RI Bowman, Michael/F-4265-2011 OI Bowman, Michael/0000-0003-3464-9409 FU U.S.-Israel BSF; DFG; Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research, U.S. Department of Energy [W-31-109-Eng-38, DE-FG02-87ER13791]; U.S. Department of Energy [DE-FG02-88ER13969] FX This work was supported by U.S.-Israel BSF and DFG programs (H. L.). The Division of Chemical Sciences, Office of Basic Energy Sciences, Office of Energy Research, U.S. Department of Energy (contract W-31-109-Eng-38, JRN, and grant DE-FG02-87ER13791, D.G. and T.A.M). This is publication No. 55 from the Arizona State University Center for the Study of Early Events in Photosynthesis. The Center is funded by U.S. Department of Energy (Grant No. DE-FG02-88ER13969 as part of the USDAfDOE/NSF Plant Science Center program. This work is in partial fulfillment of the requirements for the accomplishment of a M.Sc degree (K.H.) at the Hebrew University of Jerusalem. NR 11 TC 7 Z9 7 U1 0 U2 3 PU SPRINGER WIEN PI WIEN PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA SN 0937-9347 J9 APPL MAGN RESON JI Appl. Magn. Reson. PD DEC PY 1990 VL 1 IS 3 BP 357 EP 368 PG 12 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA V20AR UT WOS:000208113400001 ER PT J AU MURRAY, GM SARRIO, RV PETERSON, JR AF MURRAY, GM SARRIO, RV PETERSON, JR TI CORRELATION OF RAMAN PHONON AND EUROPIUM(III) LUMINESCENCE SPECTRA AS A PROBE OF STRUCTURE IN TRISODIUM TRIS(2,6-PYRIDINEDICARBOXYLATO)LANTHANIDE(III) COMPOUNDS SO APPLIED SPECTROSCOPY LA English DT Article DE LUMINESCENCE; ANALYTICAL METHODS; RAMAN SPECTROSCOPY; SPECTROSCOPIC TECHNIQUES ID RARE-EARTH CARBOXYLATES; SITE SELECTIVE SPECTROSCOPY; MOLECULAR STRUCTURE; DEFECT CHEMISTRY; CRYSTAL AB Raman phonon and probe ion luminescence spectroscopy has been demonstrated as a reliable means of differentiating the various crystal structures of many trisodium tris(2,6-pyridinedicarboxylato) anthanide(III) compounds. The luminescence spectra have been measured at high resolution and at low temperature (77 K) to show the sensitivity of this spectral method to slight changes in the metal ion coordination polyhedra which are due to differing crystal structures. The use of optical means for determining crystal structure is being explored for potential use with high radioactive transuranium elements. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV CHEM,TRANSURANIUM RES LAB,OAK RIDGE,TN 37831. RI Murray, George/A-6625-2011 NR 12 TC 6 Z9 6 U1 0 U2 0 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD DEC PY 1990 VL 44 IS 10 BP 1647 EP 1653 DI 10.1366/0003702904417517 PG 7 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA EQ822 UT WOS:A1990EQ82200009 ER PT J AU KRAUSS, AR AUCIELLO, O KINGON, AI AMEEN, MS LIU, YL BARR, T GRAETTINGER, TM ROU, SH SOBLE, CS GRUEN, DM AF KRAUSS, AR AUCIELLO, O KINGON, AI AMEEN, MS LIU, YL BARR, T GRAETTINGER, TM ROU, SH SOBLE, CS GRUEN, DM TI COMPUTER-CONTROLLED ION-BEAM DEPOSITION SYSTEMS FOR HIGH-TC SUPERCONDUCTOR AND OTHER MULTICOMPONENT OXIDE THIN-FILMS AND LAYERED STRUCTURES SO APPLIED SURFACE SCIENCE LA English DT Article C1 MICROELECTR CTR NC,RES TRIANGLE PK,NC 27709. N CAROLINA STATE UNIV,DEPT MAT SCI,RALEIGH,NC 27695. UNIV WISCONSIN,DEPT MAT,MILWAUKEE,WI 53201. RP KRAUSS, AR (reprint author), ARGONNE NATL LAB,CHM 200,MSD,ARGONNE,IL 60439, USA. NR 19 TC 16 Z9 16 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 J9 APPL SURF SCI JI Appl. Surf. Sci. PD DEC PY 1990 VL 46 IS 1-4 BP 67 EP 73 DI 10.1016/0169-4332(90)90121-F PG 7 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA EM676 UT WOS:A1990EM67600011 ER PT J AU BERNHARDT, AF BARFKNECHT, AT CONTOLINI, RJ MALBA, V MAYER, ST RALEY, NF TUCKERMAN, DB AF BERNHARDT, AF BARFKNECHT, AT CONTOLINI, RJ MALBA, V MAYER, ST RALEY, NF TUCKERMAN, DB TI MULTICHIP PACKAGING FOR VERY-HIGH-SPEED DIGITAL-SYSTEMS SO APPLIED SURFACE SCIENCE LA English DT Article RP BERNHARDT, AF (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 5503,MAIL STOP L-271,LIVERMORE,CA 94550, USA. NR 9 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 J9 APPL SURF SCI JI Appl. Surf. Sci. PD DEC PY 1990 VL 46 IS 1-4 BP 121 EP 130 DI 10.1016/0169-4332(90)90130-R PG 10 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA EM676 UT WOS:A1990EM67600020 ER PT J AU KING, DE FERNANDEZ, JE SWARTZ, WE AF KING, DE FERNANDEZ, JE SWARTZ, WE TI AN XPS STUDY OF THE DOPING OF TRANS, TRANS PARA-DISTYRYLBENZENE WITH ASF5 - A MODEL CONDUCTING POLYMER SYSTEM SO APPLIED SURFACE SCIENCE LA English DT Article C1 GE,DEPT NEUTRON DEVICES,POB 2908,LARGO,FL 34649. SOLAR ENERGY RES INST,GOLDEN,CO 80401. UNIV S FLORIDA,DEPT CHEM,TAMPA,FL 33620. NR 31 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0169-4332 J9 APPL SURF SCI JI Appl. Surf. Sci. PD DEC PY 1990 VL 45 IS 4 BP 325 EP 339 DI 10.1016/0169-4332(90)90042-X PG 15 WC Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Chemistry; Materials Science; Physics GA EN063 UT WOS:A1990EN06300004 ER PT J AU MOFFATT, BA SOMERVILLE, CR AF MOFFATT, BA SOMERVILLE, CR TI PURIFICATION OF ADENINE PHOSPHORIBOSYLTRANSFERASE FROM BRASSICA-JUNCEA SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS LA English DT Article C1 MICHIGAN STATE UNIV,US DOE,PLANT RES LAB,E LANSING,MI 48824. RP MOFFATT, BA (reprint author), UNIV WATERLOO,DEPT BIOL,WATERLOO N2L 3G1,ONTARIO,CANADA. RI Somerville, Christopher/A-4048-2009 OI Somerville, Christopher/0000-0003-4647-0094 NR 22 TC 6 Z9 6 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 0003-9861 J9 ARCH BIOCHEM BIOPHYS JI Arch. Biochem. Biophys. PD DEC PY 1990 VL 283 IS 2 BP 484 EP 490 DI 10.1016/0003-9861(90)90671-K PG 7 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA EN071 UT WOS:A1990EN07100037 PM 2275559 ER PT J AU BUTT, HJ DOWNING, KH HANSMA, PK AF BUTT, HJ DOWNING, KH HANSMA, PK TI IMAGING THE MEMBRANE-PROTEIN BACTERIORHODOPSIN WITH THE ATOMIC FORCE MICROSCOPE SO BIOPHYSICAL JOURNAL LA English DT Article C1 UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DONNER LAB,BERKELEY,CA 94720. RI MPIP, AK Butt/B-8805-2009; Butt, Hans-Jurgen/C-4811-2011 FU NIGMS NIH HHS [GM36884] NR 38 TC 174 Z9 176 U1 1 U2 13 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD DEC PY 1990 VL 58 IS 6 BP 1473 EP 1480 PG 8 WC Biophysics SC Biophysics GA EK856 UT WOS:A1990EK85600011 PM 2275963 ER PT J AU KATZMAN, MT CALE, WG AF KATZMAN, MT CALE, WG TI TROPICAL FOREST PRESERVATION USING ECONOMIC INCENTIVES SO BIOSCIENCE LA English DT Article C1 INDIANA UNIV PENN,NAT SCI & MATH,INDIANA,PA 15705. OAK RIDGE NATL LAB,ENERGY & ECON ANAL SECT,OAK RIDGE,TN 37831. NR 28 TC 6 Z9 7 U1 0 U2 1 PU AMER INST BIOLOGICAL SCI PI WASHINGTON PA 1444 EYE ST, NW, STE 200, WASHINGTON, DC 20005 SN 0006-3568 J9 BIOSCIENCE JI Bioscience PD DEC PY 1990 VL 40 IS 11 BP 827 EP 832 DI 10.2307/1311485 PG 6 WC Biology SC Life Sciences & Biomedicine - Other Topics GA EJ809 UT WOS:A1990EJ80900007 ER PT J AU KSZOS, LA WINTER, JD STORCH, TA AF KSZOS, LA WINTER, JD STORCH, TA TI TOXICITY OF CHAUTAUQUA LAKE BRIDGE RUNOFF TO YOUNG-OF-THE-YEAR SUNFISH (LEPOMIS-MACROCHIRUS) SO BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY LA English DT Article C1 SUNY COLL FREDONIA,CTR ENVIRONM RESOURCES,FREDONIA,NY 14063. RP KSZOS, LA (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. OI Kszos, Lynn/0000-0002-8218-9032 NR 22 TC 1 Z9 2 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0007-4861 J9 B ENVIRON CONTAM TOX JI Bull. Environ. Contam. Toxicol. PD DEC PY 1990 VL 45 IS 6 BP 923 EP 930 PG 8 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA EJ848 UT WOS:A1990EJ84800023 PM 2279143 ER PT J AU HARRIS, DB AF HARRIS, DB TI COMPARISON OF THE DIRECTION ESTIMATION PERFORMANCE OF HIGH-FREQUENCY SEISMIC ARRAYS AND 3-COMPONENT STATIONS SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON REGIONAL SEISMIC ARRAYS AND NUCLEAR TEST BAN VERIFICATION CY FEB 14-17, 1990 CL OSLO, NORWAY AB This paper presents a theoretical comparison of the backazimuth and velocity estimation performance of arrays and three-component stations in severe noise conditions. Theoretical estimates of performance for low signal-to-noise ratios (SNRs) are validated through simulation. The high SNR limits of array performance are determined through an empirical study of 23 events at a single source location. Theory and simulation indicate a gradual and uniform deterioration in three-component station performance as the SNR is decreased, beginning at relatively high SNR. At very low SNR, the signal is overwhelmed by the noise, and the performance reaches an asymptotic plateau determined by a priori physical limitations on the velocity of incident waves. By contrast, arrays exhibit a sharp transition between a high SNR performance floor determined, presumably, by scattering effects in the signal, and a low SNR plateau. The SNR threshold for the transition in array performance is low enough that a band of SNRs exist for which arrays have usefully small direction and velocity errors, but three-component stations do not. RP HARRIS, DB (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,TREATY VERIFICAT PROGRAM,LIVERMORE,CA 94550, USA. NR 26 TC 27 Z9 27 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD DEC PY 1990 VL 80 IS 6 BP 1951 EP 1968 PN B PG 18 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ER197 UT WOS:A1990ER19700011 ER PT J AU BAME, DA WALCK, MC HIEBERTDODD, KL AF BAME, DA WALCK, MC HIEBERTDODD, KL TI AZIMUTH ESTIMATION CAPABILITIES OF THE NORESS REGIONAL SEISMIC ARRAY SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article; Proceedings Paper CT INTERNATIONAL SYMP ON REGIONAL SEISMIC ARRAYS AND NUCLEAR TEST BAN VERIFICATION CY FEB 14-17, 1990 CL OSLO, NORWAY ID NETWORK; EVENTS AB We have investigated the regional P(n) backazimuth estimation capabilities of the NORESS seismic array as a function of element spacing, frequency band, and time window to determine which parameters are optimal for reducing azimuth errors. We used a broadband frequency-wavenumber estimator to calculate backazimuths from the P(n) arrival for each of 274 regional events recorded at NORESS for 126 parameter combinations. The large data base provides a wide range of signal-to-noise ratio (SNR) (0 to 70 dB), distance (up to 10.5-degrees), and azimuth characteristics, and includes identified earthquakes and explosions as well as "unknown" sources. Most of the errors in backazimuth are less than 20-degrees when appropriate parameters are used, and mean backazimuth errors are close to zero. The best results are obtained using a 13-element array configuration that has a 1.4 km aperture and a maximum station spacing of about 600 m. With the 13-element configuration and the data filtered to include frequencies between 3 and 10 Hz, the mean errors for the 274 event data set are less than 1.4-degrees, and standard deviations are as small as +/- 11.1-degrees. The entire array also produces good results for 3 to 10 Hz, and a 9-element configuration (two inner rings) performs well at high frequencies. The five-element B-ring (600 m aperture) appears to be important in obtaining good backazimuth estimates for regional P(n) waves. Of the frequency bands considered in this study, the 3 to 6 Hz, 4 to 8 Hz, and 5 to 10 Hz bands yield the most reliable backazimuth estimates, even better than an "optical" band that calculates the azimuth in the fixed frequency band that has the largest average SNR. The time-window length has little effect on the backazimuth estimates. Other factors investigated include SNR, source region, and phase type. We found that event backazimuth accuracy degrades if the SNR of a beamed P(n) signal is less than 5 dB in the frequency band of interest. Conversely, the backazimuth estimation statistics improve if only events with 5 dB of SNR are included in the event set. These data sets yield near-zero mean errors and smaller standard deviations than the entire data set. For specific source regions, standard deviations are as low as 2-degrees for some parameter combinations, but there can also be large biases in the backazimuth estimates. Events farther than 500 km from NORESS tend to have larger azimuth errors than the closer events, but combinations of small aperture configurations and middle (3 to 10 Hz) frequency bands work well for events over the entire distance range of 40 to 1200 km. The P(n) arrival and RONAPP azimuths calculated from the L(g) phase have similar accuracy statistics for a 220 event common data base, implying that the two phases work equally well for regional event backazimuth estimation. In fact, averaging of the L(g) and P(n) estimates provides the most accurate backazimuths relative to PDE reference information. C1 SANDIA NATL LABS,DIV GEOPHYS,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DIV SYST RES V,ALBUQUERQUE,NM 87185. RP BAME, DA (reprint author), SANDIA NATL LABS,DIV VERIFICAT SYST & TECHNOL 1,9241,ALBUQUERQUE,NM 87185, USA. NR 16 TC 9 Z9 10 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD DEC PY 1990 VL 80 IS 6 BP 1999 EP 2015 PN B PG 17 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA ER197 UT WOS:A1990ER19700014 ER PT J AU HILL, WR HARVEY, BC AF HILL, WR HARVEY, BC TI PERIPHYTON RESPONSES TO HIGHER TROPHIC LEVELS AND LIGHT IN A SHADED STREAM SO CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES LA English DT Article RP HILL, WR (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,POB 2008,OAK RIDGE,TN 37831, USA. NR 38 TC 63 Z9 65 U1 1 U2 12 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0706-652X J9 CAN J FISH AQUAT SCI JI Can. J. Fish. Aquat. Sci. PD DEC PY 1990 VL 47 IS 12 BP 2307 EP 2314 PG 8 WC Fisheries; Marine & Freshwater Biology SC Fisheries; Marine & Freshwater Biology GA EM311 UT WOS:A1990EM31100005 ER PT J AU MULHOLLAND, PJ STEINMAN, AD ELWOOD, JW AF MULHOLLAND, PJ STEINMAN, AD ELWOOD, JW TI MEASUREMENT OF PHOSPHORUS UPTAKE LENGTH IN STREAMS - COMPARISON OF RADIOTRACER AND STABLE PO4 RELEASES SO CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES LA English DT Article RP MULHOLLAND, PJ (reprint author), OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831, USA. RI Mulholland, Patrick/C-3142-2012; OI Steinman, Alan/0000-0002-4886-4305 NR 32 TC 85 Z9 87 U1 0 U2 13 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0706-652X J9 CAN J FISH AQUAT SCI JI Can. J. Fish. Aquat. Sci. PD DEC PY 1990 VL 47 IS 12 BP 2351 EP 2357 PG 7 WC Fisheries; Marine & Freshwater Biology SC Fisheries; Marine & Freshwater Biology GA EM311 UT WOS:A1990EM31100009 ER PT J AU MOMOSHIMA, N BONDIETTI, EA AF MOMOSHIMA, N BONDIETTI, EA TI CATION BINDING IN WOOD - APPLICATIONS TO UNDERSTANDING HISTORICAL CHANGES IN DIVALENT-CATION AVAILABILITY TO RED SPRUCE SO CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE LA English DT Article ID XYLEM SAP ANALYSIS; L KARST STANDS; EXCHANGE CAPACITY; TREE RINGS; D DON; CALCIUM; STEMS; PERFORMANCE; TRANSPORT; MOVEMENT AB The ion exchange characteristics of red spruce (Picea rubens Sarg.) bolewood were investigated to understand factors that control divalent cation and H+ concentrations in tracheid cell walls. Vertical concentration measurements of selected cations along the stem demonstrated that the alkaline earths showed the expected chromatographic fractionation, while other cations showed variable patterns relative to calcium. The concentration of cation binding sites (pectates) decreased in a predictable manner from the pith towards the cambium as a function of radius, not chronological age, explaining why in red spruce calcium concentrations are usually highest in the oldest wood. Red spruce wood from Maine and Tennessee had divalent base saturations of about 60 to 65% before the mid-1900s; however, divalent base saturations increased to about 75 to 80% in the mid-1900s, after which they decreased. Wood pH values were highest when divalent base saturation was highest. Calcium and potassium equilibration experiments were conducted, and the results were used to parameterize the Donnan model of cation exchange to understand why base saturation in woody tissues changes in different time periods. Increased divalent cation concentrations in red spruce wood formed during the 1940s to the 1970s are explainable by small increases in both sap pH and divalent cation concentrations and may be the signal of cation mobilization following increasing mineral acid anion deposition from the atmosphere. C1 OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. NR 36 TC 91 Z9 93 U1 0 U2 3 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0045-5067 J9 CAN J FOREST RES JI Can. J. For. Res.-Rev. Can. Rech. For. PD DEC PY 1990 VL 20 IS 12 BP 1840 EP 1849 DI 10.1139/x90-247 PG 10 WC Forestry SC Forestry GA EP006 UT WOS:A1990EP00600003 ER PT J AU BONDIETTI, EA MOMOSHIMA, N SHORTLE, WC SMITH, KT AF BONDIETTI, EA MOMOSHIMA, N SHORTLE, WC SMITH, KT TI A HISTORICAL-PERSPECTIVE ON DIVALENT-CATION TRENDS IN RED SPRUCE STEMWOOD AND THE HYPOTHETICAL RELATIONSHIP TO ACIDIC DEPOSITION SO CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE LA English DT Article ID EASTERN-UNITED-STATES; L KARST STANDS; DECLINE; FORESTS; GROWTH; PERFORMANCE; NUTRIENTS; CLIMATE; RINGS; FIR AB Anomalies in the radial concentration trends of Ca2+, Mg2+, and other divalent cations in the stemwood of red spruce (Picea rubens Sarg.) occurred in trees grown in New England, Tennessee, and North Carolina. These anomalies may be assumed to result from changes in sap chemistry. These inferred changes in sap chemistry were the expected result of changes of divalent cation availability in forest soils. The patterns of these anomalies may be interpreted as a signal of a regional mobilization of cations in the rooting zone of red spruce. The anomalous increase in divalent cations present in wood formed in the mid-1900s is coincident both with rapid increases in SO(x) and NO(x) deposition in eastern North America and with increases in radial growth increment. The anomalous decrease in divalent cations in wood formed in the late-1900s is coincident with declines in radial increment. Comparisons with divalent cation trends in eastern hemlock (Tsuga canadensis (L.) Carr.), Fraser fir (Abies fraseri (Pursh) Poir.), and yellow birch (Betula alleghaniensis Britt. = B. lutea Michx.) suggested that these anomalies were not restricted to red spruce. Radial concentration trends of Sr-90 introduced to the environment through radioactive fallout during the 1950s and 1960s were used to investigate the physiology of these divalent cation concentration anomalies. The distributions of Sr-90 were also used to estimate the turnover rates for the nutritionally available pools of alkaline earths such as calcium. C1 US FOREST SERV,NE FOREST EXPT STN,DURHAM,NH 03824. OAK RIDGE NATL LAB,DIV ENVIRONM SCI,OAK RIDGE,TN 37831. NR 31 TC 90 Z9 92 U1 0 U2 2 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0045-5067 J9 CAN J FOREST RES JI Can. J. For. Res.-Rev. Can. Rech. For. PD DEC PY 1990 VL 20 IS 12 BP 1850 EP 1858 DI 10.1139/x90-248 PG 9 WC Forestry SC Forestry GA EP006 UT WOS:A1990EP00600004 ER PT J AU GOOLSBY, CL WILEY, JE STEINER, M BARTHOLDI, MF CRAM, LS KRAEMER, PM AF GOOLSBY, CL WILEY, JE STEINER, M BARTHOLDI, MF CRAM, LS KRAEMER, PM TI KARYOTYPE EVOLUTION IN A SIMIAN-VIRUS 40-TRANSFORMED TUMORIGENIC HUMAN CELL-LINE SO CANCER GENETICS AND CYTOGENETICS LA English DT Article ID HUMAN-DIPLOID FIBROBLASTS; SV40-TRANSFORMED HUMAN; XERODERMA PIGMENTOSUM; SV40 TRANSFORMATION; CHROMOSOME CHANGES; 40 GENE; RETINOBLASTOMA; MAINTENANCE; DNA; IMMORTALIZATION AB Normal human foreskin fibroblasts (HSF4) were transfected using the pSV3-neo plasmid. A pool of 10 G418-resistant colonies, HSF4-T12, showed a progressive increase in the expression of a number of in vitro transformation markers with passage in culture and became immortalized. Although no tumors were formed when cells were injected subcutaneously into nude mice, this cell line produced progressive tumors when cells were injected into preimplanted Gelfoam sponges in the mice. When these tumors were cultured in vitro and subsequently injected subcutaneously, progressive tumors were produced with median latency periods as short as 4 weeks. Three phases of cytogenetic change could be distinguished. At early passages after transfection, HSF4-T12 exhibited many random chromosomal changes. At a time just after immortalization, both flow karyotype and G-banded analyses showed the appearance of balanced clonal rearrangements. These included t(2;4), t(2;14), t(3;?), 6p-, i(6p), 8p-, t(14;15), i(15), and t(18;?). These clonal rearrangements were stable with passage in culture, and less variability from cell to cell was noted. The only consistent chromosomal loss observed was -Y. Analysis of three independent tumors showed characteristic loss of chromosomal material rather than balanced chromosomal rearrangements. Frequent loss of 6q and chromosomes #13, 15, 20, and Y was noted. C1 E CAROLINA UNIV,SCH MED,DEPT PEDIAT GENET,GREENVILLE,NC 27834. UNIV CALIF LOS ALAMOS SCI LAB,CELL BIOL GRP,LOS ALAMOS,NM 87544. RP GOOLSBY, CL (reprint author), NORTHWESTERN UNIV,VET ADM LAKESIDE MED CTR,SCH MED,DEPT PATHOL,ROOM 711,CHICAGO,IL 60611, USA. FU NCI NIH HHS [5 F32, CA07910]; NCRR NIH HHS [RR01315, RR05370] NR 56 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0165-4608 J9 CANCER GENET CYTOGEN JI Cancer Genet. Cytogenet. PD DEC PY 1990 VL 50 IS 2 BP 231 EP 248 DI 10.1016/0165-4608(90)90183-B PG 18 WC Oncology; Genetics & Heredity SC Oncology; Genetics & Heredity GA ET768 UT WOS:A1990ET76800006 PM 2176127 ER PT J AU KNIZE, MG ROPER, M SHEN, NH FELTON, JS AF KNIZE, MG ROPER, M SHEN, NH FELTON, JS TI PROPOSED STRUCTURES FOR AN AMINO-DIMETHYLIMIDAZOFUROPYRIDINE MUTAGEN IN COOKED MEATS SO CARCINOGENESIS LA English DT Note ID IDENTIFICATION; FUROPYRIDINES; NITRITE; BEEF AB New analytical data allow the structure of a potent mutagen previously reported present in cooked meats to be proposed. The mutagen was isolated from a fried mixture of beef, creatine and milk, simulating a meat recipe previously shown to produce this compound. High-resolution mass spectra indicate a mol. wt of 202 and the formula C10H10N4O. Mutagenic activity was 10 000 TA1538 revertants per microgram in the Ames Salmonella test. From the NMR data, peaks showing an amino group at 6.812 p.p.m. and an N-methyl group at 3.520 p.p.m. were found, typical for the amino-imidazo structure commonly found in cooked meats. Additional signals at 2.440 p.p.m. (three protons), 7.653 (one proton) and 6.531 (one proton) were observed. A structure of 2-amino-(1 or 3),6-dimethylfuro[2,3(or 3,2)-e]imidazo[4,5-b]pyridine was proposed based on the mass and NMR spectral data and comparison to literature compounds. The methylimidazofuropyridine reported here is probably related to another mutagen in cooked meats with a mol. wt of 216 with an additional methyl group on either the furan or pyridine rings. RP KNIZE, MG (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV BIOMED SCI,POB 5507,LIVERMORE,CA 94550, USA. FU NIEHS NIH HHS [222YO1-ES-70158]; PHS HHS [R0140811] NR 17 TC 35 Z9 35 U1 1 U2 1 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0143-3334 J9 CARCINOGENESIS JI Carcinogenesis PD DEC PY 1990 VL 11 IS 12 BP 2259 EP 2262 DI 10.1093/carcin/11.12.2259 PG 4 WC Oncology SC Oncology GA EP561 UT WOS:A1990EP56100030 PM 2265477 ER PT J AU HORWICH, G AF HORWICH, G TI DISASTERS AND MARKET RESPONSE SO CATO JOURNAL LA English DT Article C1 OAK RIDGE NATL LAB,OAK RIDGE,TN. RP HORWICH, G (reprint author), PURDUE UNIV,KRANNERT SCH MANAGEMENT,W LAFAYETTE,IN 47907, USA. NR 44 TC 3 Z9 3 U1 0 U2 0 PU CATO INSTITUTE PI WASHINGTON PA 1000 MASSACHUSETTS AVE., NW #6, WASHINGTON, DC 20001-5403 SN 0273-3072 J9 CATO J JI Cato J. PD WIN PY 1990 VL 9 IS 3 BP 531 EP 557 PG 27 WC Public Administration SC Public Administration GA DT745 UT WOS:A1990DT74500002 ER PT J AU TRAEGER, RK KROOP, WA LAITY, JL AF TRAEGER, RK KROOP, WA LAITY, JL TI TECHNOLOGY-TRANSFER - WHATS IN IT FOR ME SO CHEMICAL ENGINEERING PROGRESS LA English DT Article C1 DUPONT CO,WILMINGTON,DE 19898. SHELL DEV CO,HOUSTON,TX 77001. RP TRAEGER, RK (reprint author), SANDIA NATL LABS,DEPT ENVIRONM & EARTH DYNAM,ALBUQUERQUE,NM 87185, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST CHEMICAL ENGINEERS PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0360-7275 J9 CHEM ENG PROG JI Chem. Eng. Prog. PD DEC PY 1990 VL 86 IS 12 BP 73 EP 77 PG 5 WC Engineering, Chemical SC Engineering GA EN140 UT WOS:A1990EN14000012 ER PT J AU GOLSHANSHIRAZI, S GUIOCHON, G AF GOLSHANSHIRAZI, S GUIOCHON, G TI THEORETICAL EXPLANATION OF THE DISPLACEMENT AND TAG-ALONG EFFECTS SO CHROMATOGRAPHIA LA English DT Article DE PREPARATIVE CHROMATOGRAPHY; NONLINEAR CHROMATOGRAPHY; BAND PROFILES; THEORY OF CHROMATOGRAPHY; BAND SEPARATION ID LIQUID-CHROMATOGRAPHY; SEPARATION; MIXTURE; MODEL AB Because of the non-linear behavior equilibrium isotherms at high concentrations and of the competition between closely eluted components for access to the stationary phase, two new phenomena take place, which are not seen in analytical chromatography. The displacement and tag-along effects control the individual elution profiles of overlapping bands. The physical and mathematical causes of these phenomena are explained. The influence of the parameters of the separation on the relative intensity of these effects is discussed. C1 UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. NR 18 TC 6 Z9 6 U1 0 U2 2 PU FRIEDR VIEWEG SOHN VERLAG GMBH PI WIESBADEN 1 PA PO BOX 5829, W-6200 WIESBADEN 1, GERMANY SN 0009-5893 J9 CHROMATOGRAPHIA JI Chromatographia PD DEC PY 1990 VL 30 IS 11-12 BP 613 EP 617 DI 10.1007/BF02269733 PG 5 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA EQ221 UT WOS:A1990EQ22100001 ER PT J AU JOHNSTON, CT AGNEW, SF BISH, DL AF JOHNSTON, CT AGNEW, SF BISH, DL TI POLARIZED SINGLE-CRYSTAL FOURIER-TRANSFORM INFRARED MICROSCOPY OF OURAY DICKITE AND KEOKUK KAOLINITE SO CLAYS AND CLAY MINERALS LA English DT Article DE CRYSTAL STRUCTURE; DICKITE; FOURIER-TRANSFORM INFRARED MICROSCOPY; HYDROXYL ORIENTATION; KAOLINITE; SINGLE CRYSTAL ID HYDROGEN-ATOM POSITIONS; STACKING-FAULTS; STRUCTURAL OH; MINERALS; NACRITE; ORIENTATION; DIFFRACTION AB Single-crystal Fourier-transform infrared (FTIR) spectra of Keokuk kaolinite and Ouray dickite were obtained with an FTIR microscope. Although numerous IR, FTIR, and Raman spectra of polycrystalline kaolinite and dickite can be found in the literature, the present data represent the first reported single-crystal vibrational spectra for these clay minerals. The orientation of the crystallographic axes of dickite was determined using a cross-polarizing optical microscope fitted with an 550-nm optical retardation plate. Assignment of the inner hydroxyl group OH1 to the 3623-cm-1 band was confirmed, and the angle of this OH group to the b-axis was determined to be 47-degrees based upon the measured dichroic ratio. The 3702-3710-cm-1 absorption feature appeared to consist of two closely spaced bands having slightly different polarization behavior. The inner-surface hydroxyl group OH3 was assigned to the absorption bands at 3710 cm-1. The calculated angle of the OH3 groups to the b-axis was found to be 22-degrees, which agrees well with the angles determined by X-ray powder diffraction and neutron diffraction. The remaining hydroxyl groups, OH2 and OH4, were assigned to the 3656 cm-1 band; the angle of the OH2 and OH4 groups to the b-axis was measured at 45-degrees. The polarization behavior of the OH-deformation bands of dickite at 911, 937, and 952 cm-1 was found to be similar to that observed in the OH-stretching region. Single-crystal FTIR spectra of Keokuk kaolinite showed that rotation of the electric vector around the c/z axis in the ab plane of kaolinite resulted in a behavior distinct from that of dickite. The OH-stretching bands of kaolinite were found to be considerably more polarized than the corresponding bands of dickite. This is related directly to the fact that dickite possesses a glide plane (space group Cc) compared with kaolinite, which does not (space group C1). C1 UNIV CALIF LOS ALAMOS SCI LAB, LOS ALAMOS, NM 87545 USA. RP JOHNSTON, CT (reprint author), UNIV FLORIDA, DEPT SOIL SCI, 2169 MCCARTY HALL, GAINESVILLE, FL 32611 USA. RI Johnston, Cliff/B-2215-2009 OI Johnston, Cliff/0000-0002-8462-9724 NR 35 TC 78 Z9 80 U1 2 U2 4 PU CLAY MINERALS SOC PI CHANTILLY PA 3635 CONCORDE PKWY, STE 500, CHANTILLY, VA 20151-1125 USA SN 0009-8604 EI 1552-8367 J9 CLAY CLAY MINER JI Clay Clay Min. PD DEC PY 1990 VL 38 IS 6 BP 573 EP 583 DI 10.1346/CCMN.1990.0380602 PG 11 WC Chemistry, Physical; Geosciences, Multidisciplinary; Mineralogy; Soil Science SC Chemistry; Geology; Mineralogy; Agriculture GA EZ417 UT WOS:A1990EZ41700002 ER PT J AU GAYLORD, M SMITH, Z LORCH, V BLANK, M ANDERSON, M SNYDER, F AF GAYLORD, M SMITH, Z LORCH, V BLANK, M ANDERSON, M SNYDER, F TI THE DEVELOPMENT OF ELEVATED PLATELET-ACTIVATING-FACTOR (PAF) LEVELS IN VERY-LOW-BIRTH-WEIGHT (VLBW) INFANTS (I) IS ASSOCIATED WITH BRONCHOPULMONARY DYSPLASIA (BPD) SO CLINICAL RESEARCH LA English DT Meeting Abstract C1 UNIV TENNESSEE,MED CTR,KNOXVILLE,TN 37996. OAK RIDGE ASSOCIATED UNIV,DIV MED SCI,OAK RIDGE,TN 37830. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 0009-9279 J9 CLIN RES JI Clin. Res. PD DEC PY 1990 VL 38 IS 4 BP A926 EP A926 PG 1 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA EN539 UT WOS:A1990EN53900057 ER PT J AU BARLOW, RS DIBBLE, RW CHEN, JY LUCHT, RP AF BARLOW, RS DIBBLE, RW CHEN, JY LUCHT, RP TI EFFECT OF DAMKOHLER NUMBER ON SUPEREQUILIBRIUM OH CONCENTRATION IN TURBULENT NONPREMIXED JET FLAMES SO COMBUSTION AND FLAME LA English DT Article ID FLAT FLAMES; FLUORESCENCE; HYDROGEN AB Simultaneous, spatially resolved measurements of mixture fraction and absolute hydroxyl radical concentration are obtained for the first time in nonpremixed, turbulent, hydrogen-air flames. This is accomplished by combining spontaneous Raman scattering with linear, laser-induced fluorescence (LIF). The Raman scattering data define the instantaneous, local collisional quenching environment of the OH molecules, allowing quenching corrections to be applied for each laser shot and making the linear LIF measurements quantitative. The effect of Damkohler number on OH superequilibrium is determined by performing measurements at selected locations in two argon-diluted hydrogen flames (Reynolds numbers 8,500 and 17,000). Results demonstrate that departures from chemical equilibrium in these flames are a consequence of the fact that time scales for turbulent transport are competitive with time scales for three-body radical recombination reactions. Due to the slow characteristic time for the radical recombination, convective histories, as well as instantaneous local conditions, determine hydroxyl concentrations. Damkkohler numbers are not sufficiently low for the rapid bimolecular reactions to be strongly affected. Comparison of turbulent flame data with results from strained laminar flame calculations indicates that partial equilibrium of the bimolecular reactions is a good approximation near the stoichiometric mixture fraction. Comparisons of the experimental data with predictions by Monte Carlo simulations using a partial equilibrium chemistry model show good overall agreement. However, simulations predict a smaller variance of OH concentration than is measured for a given value of mixture fraction, lower OH concentrations at off-stoichiometric conditions, and a more rapid decay toward equilibrium with streamwise distance. RP BARLOW, RS (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550, USA. NR 23 TC 97 Z9 98 U1 1 U2 8 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD DEC PY 1990 VL 82 IS 3-4 BP 235 EP 251 DI 10.1016/0010-2180(90)90001-8 PG 17 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA EQ851 UT WOS:A1990EQ85100001 ER PT J AU BARR, PK KELLER, JO BRAMLETTE, TT WESTBROOK, CK DEC, JE AF BARR, PK KELLER, JO BRAMLETTE, TT WESTBROOK, CK DEC, JE TI PULSE COMBUSTOR MODELING DEMONSTRATION OF THE IMPORTANCE OF CHARACTERISTIC TIMES SO COMBUSTION AND FLAME LA English DT Article ID FLOW AB A numerical model has been developed to study the sensitivity of a pulse combustor's performance to changes in the relative timing between several of the dominant physical processes. The model is used to demonstrate the importance of the characteristic times associated with acoustics, fluid mixing, and chemical kinetics, which have been identified from both theoretical and experimental evidence. The combination of submodels for acoustics, injection, and combustion produces a pulse combustor model that is dynamic in that it fully couples the injection and mixing processes to the acoustic waves. Comparisons of simulations with experimental results show good agreement, verifying the model over a wide range of operating conditions. Because the model provides more control of the dominant processes than can be obtained in experiments, the parametric study establishes the cause-effect relation between the characteristic times and the resulting combustor performance. C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV MICHIGAN,ANN ARBOR,MI 48109. RP BARR, PK (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94551, USA. NR 31 TC 30 Z9 33 U1 0 U2 3 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD DEC PY 1990 VL 82 IS 3-4 BP 252 EP 269 DI 10.1016/0010-2180(90)90002-9 PG 18 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA EQ851 UT WOS:A1990EQ85100002 ER PT J AU MARTIN, RJ BROWN, NJ AF MARTIN, RJ BROWN, NJ TI ANALYSIS AND MODELING OF NITROUS-OXIDE CHEMISTRY IN LEAN, PREMIXED COMBUSTION SO COMBUSTION AND FLAME LA English DT Article ID ATMOSPHERE; N2O AB A modeling study of N2O chemistry in lean, premixed, atmospheric-pressure combustion is presented. Laminar flame and homogeneous combustion modeling calculations were performed using the PREMIX and CHEMKIN codes, respectively. Four systems containing H-2, O2, Ar, and an N-containing dopant (NH3, NO, or N2O) were modeled and compared to recent flat-flame burner experiments. Agreement between measured and computed N2O, NO, and N2 concentration profiles indicated that the model is a reasonable representation of the chemistry and transport in the flame system. The effects of assumed burner temperature, temperature profile shape, mass diffusion, and probing are investigated. A sensitivity analysis of the flame calculations is presented. For cases where burner temperatures were identical but temperatures were either determined by solving the energy equation numerically or were specified to be equivalent to measured temperatures, calculated N2O, NO, and N2 profiles differed by 2%-15%. Calculations that differed only in specified flameholder surface temperature (400-1000 K) produced concentration profiles that varied by approximately 20% in NO and N2 and by as much as a factor of 7 in N2O. Computations performed with and without mass diffusion demonstrated that profile shapes and final, postflame concentrations of N2O, NO, and N2 differed by factors of 1.5-3.0, due to the fast transport of low mass, reactive species. Nitrogeneous species profiles are sensitive to values of diffusion coefficients. A probe-quench simulation indicated that sampling may alter the N2O concentration in gases extracted very near the burner surface, but that relatively little species interconversion takes place at heights greater than 1 mm. Reaction rate and sensitivity results from these computations indicate that the principal formation and destruction reactions for N2O are NH + NO = N2O + H H + N2O = N2 + OH and that H + O2 + M = HO2 + M plays a significant role in trapping H atoms to enhance N2O survival. RP MARTIN, RJ (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV APPL SCI,1 CYCLOTRON RD,BERKELEY,CA 94720, USA. NR 33 TC 12 Z9 12 U1 1 U2 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD DEC PY 1990 VL 82 IS 3-4 BP 312 EP 333 DI 10.1016/0010-2180(90)90005-C PG 22 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA EQ851 UT WOS:A1990EQ85100005 ER PT J AU VOSEN, SR AF VOSEN, SR TI HYDROXYLAMMONIUM NITRATE-BASED LIQUID PROPELLANT COMBUSTION - INTERPRETATION OF STRAND BURNER DATA AND THE LAMINAR BURNING VELOCITY SO COMBUSTION AND FLAME LA English DT Article AB Measurements have been made of the burning velocity of a hydroxylammonium nitrate-based liquid propellant undergoing combustion in a strand burner. Experiments were conducted at constant pressures of 6.7-34 MPa while the propellant was confined in a strand burner with a 1.8 x 1.0-mm rectangular cross section, a size smaller than that used in previous studies. An electric discharge was used to ignite the propellant, which was then observed by high-speed photography. The overall burning velocity in the strand burner was found to be influenced by hydrodynamic effects, resulting in a decrease in the overall burning velocity with an increase in pressure up to 26 MPa. Above 26 MPa instabilities became less important and the burning velocity was independent of pressure, a trend that has not been noted previously. The laminar burning velocity of the propellant was estimated to be 27.3 +/- 0.6 mm/s at pressures of 30-34 MPa. Comparison with other hydroxylammonium nitrate-based liquid propellant burning velocity experiments gives a burning velocity of S(u) = 9.45 P0.275 (S(u) in mm/s, P in MPa) for pressures of 1.0-100.0 MPa. Also noted for the first time was the quenching of the gas-phase flame at a pressure of up to 34 MPa in a 1.8 x 1.0-mm burner. RP VOSEN, SR (reprint author), SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94551, USA. NR 29 TC 24 Z9 27 U1 0 U2 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD DEC PY 1990 VL 82 IS 3-4 BP 376 EP 388 DI 10.1016/0010-2180(90)90009-G PG 13 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA EQ851 UT WOS:A1990EQ85100009 ER PT J AU MANSOUR, MS BILGER, RW DIBBLE, RW AF MANSOUR, MS BILGER, RW DIBBLE, RW TI SPATIAL-AVERAGING EFFECTS IN RAMAN/RAYLEIGH MEASUREMENTS IN A TURBULENT FLAME SO COMBUSTION AND FLAME LA English DT Article ID FLOW; COMBUSTION AB Spatial-averaging effects on laser-based measurements of scalar quantities in turbulent flames are investigated. Raman/Rayleigh measurements are made in the shear layers of a turbulent reverse flow reactor (RFR) with two different probe volumes to study the effects on the measured mean, rms, and probability density functions (pdfs). In addition, the errors in the measured variance are estimated by scalar spectrum analysis for an isotropic flow, using the Pao-Corrsin scalar spectrum. The data show that spatial averaging reduces the rms fluctuations of the species concentrations and Rayleigh signal. Also, the form of the pdf is affected in such a way that for a monomodal distribution, it may reduce any sharp peak, whereas for a bimodal distribution it reduces the peaks and fills the gap in between, i.e, reduces its bimodality. These errors are slightly higher for reacting species and the Rayleigh signal data than for nonreacting species. For the measurements reported here the effects are not large enough to change the overall shape of the pdf greatly. The analytical estimates agree quite well with the experimental data, and the theory shows that the effect of the length of the sensor on the variance depends on both the integral scale of the turbulence and the microscale of the scalar, which are related by the turbulence Reynolds number. C1 SANDIA NATL LABS,COMBUST RES FACIL,LIVERMORE,CA 94550. RP MANSOUR, MS (reprint author), UNIV SYDNEY,DEPT MECH ENGN,SYDNEY,NSW 2006,AUSTRALIA. NR 24 TC 29 Z9 29 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD DEC PY 1990 VL 82 IS 3-4 BP 411 EP 425 DI 10.1016/0010-2180(90)90011-F PG 15 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA EQ851 UT WOS:A1990EQ85100011 ER PT J AU FOSTER, I KESSELMAN, C TAYLOR, S AF FOSTER, I KESSELMAN, C TAYLOR, S TI CONCURRENCY - SIMPLE CONCEPTS AND POWERFUL TOOLS SO COMPUTER JOURNAL LA English DT Article AB Stepwise refinement is a central program development methodology that has been applied extensively to the design of sequential and parallel programs. In this methodology, a problem is successively decomposed into subproblems in order to untangle seemingly interdependent aspects of the design. To apply the methodology to parallel programs, one must be able to separate and reason about issues such as partitioning and mapping. This paper describes programming language concepts that we have found useful in applying stepwise refinement to parallel programs. The concepts allow decisions concerning program structure to be delayed until late in the design process. This capability permits rapid experimentation with alternative structures and leads to both portable and scalable code. Although simple, the concepts form a sufficient basis for the construction of powerful programming tools. Both concepts and tools have been applied successfully in a wide variety of applications and are incorporated in a commercial concurrent programming system, Strand*. C1 AEROSPACE CORP,LOS ANGELES,CA 90009. CALTECH,PASADENA,CA 91125. RP FOSTER, I (reprint author), ARGONNE NATL LAB,DIV MATH & COMP SCI,9700 S CASS AVE,ARGONNE,IL 60439, USA. OI Kesselman, Carl/0000-0003-0917-1562 NR 18 TC 2 Z9 2 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0010-4620 J9 COMPUT J JI Comput. J. PD DEC PY 1990 VL 33 IS 6 BP 501 EP 507 DI 10.1093/comjnl/33.6.501 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA EN996 UT WOS:A1990EN99600004 ER PT J AU CZOK, M GUIOCHON, G AF CZOK, M GUIOCHON, G TI COMPARISON OF THE RESULTS OBTAINED WITH DIFFERENT MODELS FOR THE SIMULATION OF PREPARATIVE CHROMATOGRAPHY SO COMPUTERS & CHEMICAL ENGINEERING LA English DT Article ID MASS-TRANSFER KINETICS; LIQUID-CHROMATOGRAPHY; NONLINEAR CHROMATOGRAPHY; COMPUTER-SIMULATION; BINARY MIXTURE; ELUTION; SEPARATION; BAND; OPTIMIZATION; PROPAGATION AB We examine the theoretical similarities and differences between three calculation procedures used for the simulation of band propagation in non-linear chromatography. All three approaches are implementations of the finite difference method of integration of the partial differential equations which state the mass balances of the sample components. The elution profiles calculated with these three procedures agree quite well when applied to reasonably efficient columns (over 1000 theoretical plates), at moderate and high sample loads as long as the displacement effect predominates. These profiles also agree well with experimental results. Significant differences appear, however, when the concentration of the second component in the feed is smaller than that of the first one. The origin and extent of these differences are discussed in detail and the range of deviations to be expected in practical cases is illustrated. C1 OAK RIDGE NATL LAB,DIV ANALYT CHEM,OAK RIDGE,TN 37831. UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37996. OI Souce, Martin/0000-0002-6627-9660 NR 36 TC 28 Z9 28 U1 2 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0098-1354 J9 COMPUT CHEM ENG JI Comput. Chem. Eng. PD DEC PY 1990 VL 14 IS 12 BP 1435 EP 1443 DI 10.1016/0098-1354(90)80022-4 PG 9 WC Computer Science, Interdisciplinary Applications; Engineering, Chemical SC Computer Science; Engineering GA EQ494 UT WOS:A1990EQ49400009 ER PT J AU MAIYA, PS SHACK, WJ KASSNER, TF AF MAIYA, PS SHACK, WJ KASSNER, TF TI STRESS-CORROSION CRACKING OF CANDIDATE MATERIAL FOR NUCLEAR WASTE CONTAINERS SO CORROSION LA English DT Article DE CRACKING INDEX; STRAIN RATIO; STRESS CORROSION CRACKING; 304L; 316L; ALLOY 825; CU; CU-30-PERCENT-NI; CU-7-PERCENT-AL; RANKING OF MATERIALS; WASTE CONTAINER MATERIALS; STRESS RATIO AB Types 304L (UNS(1) S30403) and 316L (UNS S31603) stinless steel (SS), Incoloy(2) 825 (UNS N08825), Cu, Cu-30%Ni, and Cu-7%Al have been selected as candidate materials for the containment of high-level nuclear waste at the proposed Yucca Mountain site in Nevada. Susceptibility of these materials to stress corrosion cracking has been investigated by slow strain rate tests (SSRTs) in water simulating that from well J-13, which provides representative groundwater at the Yucca Mountain site. The slow strain rate tests were performed on specimens exposed to simulated J-13 water at 93-degrees-C and at a strain rate of 10(-7) and 10(-8) s-1 under crevice and noncrevice conditions. All the tests were interrupted after nominal elongation strains of 1 to 4 percent. Scanning electron microscopy revealed some crack initiation in virtually all specimens. Optical microscopy of metallorgraphically prepared transverse sections of type 304L SS suggests that the crack depths are small (< 10-mu-m). Differences in cracking susceptibility for the six materials are evaluated and discussed in terms of a stress ratio, which is defined as the ratio of the increase in stress after local yielding in the environment to the corresponding stress increase in an identical test in air, both computed at the same strain. RP MAIYA, PS (reprint author), ARGONNE NATL LAB,DIV MAT & COMPONENTS TECHNOL,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 10 TC 3 Z9 3 U1 0 U2 1 PU NATL ASSN CORROSION ENG PI HOUSTON PA 1440 SOUTH CREEK DRIVE, HOUSTON, TX 77084-4906 SN 0010-9312 J9 CORROSION JI Corrosion PD DEC PY 1990 VL 46 IS 12 BP 954 EP 963 PG 10 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA FV858 UT WOS:A1990FV85800001 ER PT J AU VANDUZER, T KUMAR, S AF VANDUZER, T KUMAR, S TI SEMICONDUCTOR - SUPERCONDUCTOR HYBRID ELECTRONICS SO CRYOGENICS LA English DT Article DE SEMICONDUCTORS; SUPERCONDUCTORS; TRANSISTORS ID DEVICES; RESISTANCE; JUNCTIONS; DESIGN AB This paper examines the feasibility and potential for applications of intimately combining semiconductor and superconductor devices at circuit and system levels. The focus is mainly on the temperature range 27 - 77 K. One of the main issues is the heat produced by the semiconductor devices, since the superconductor devices produce much less heat and are sensitive to temperature changes. It is shown that Josephson junctions made with high temperature superconductors can be placed very close to transistors on a properly heat-sunk chip. A second important issue is interfacing the low voltages of superconducting devices to the much higher voltages needed for transistors; an existing technique is discussed in the context of high temperature superconductors. Only well developed semiconductor technologies have been considered; although there is some possibility of making low voltage transistors, this is not explored here. The paper concludes with an analysis of the various applications that can be realized, depending on the type of device available in high temperature superconductor technology: passive patterned films, non-hysteretic Josephson devices or Josephson tunnel junctions. C1 UNIV CALIF BERKELEY,ELECTR RES LAB,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,BERKELEY,CA 94720. RP VANDUZER, T (reprint author), UNIV CALIF BERKELEY,DEPT ELECT ENGN & COMP SCI,BERKELEY,CA 94720, USA. RI Kumar, Sunil/H-1082-2012 NR 43 TC 14 Z9 14 U1 1 U2 4 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0011-2275 J9 CRYOGENICS JI Cryogenics PD DEC PY 1990 VL 30 IS 12 BP 1014 EP 1023 DI 10.1016/0011-2275(90)90201-M PG 10 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA EQ220 UT WOS:A1990EQ22000006 ER PT J AU WHICKER, FW PINDER, JE BOWLING, JW ALBERTS, JJ BRISBIN, IL AF WHICKER, FW PINDER, JE BOWLING, JW ALBERTS, JJ BRISBIN, IL TI DISTRIBUTION OF LONG-LIVED RADIONUCLIDES IN AN ABANDONED REACTOR COOLING RESERVOIR SO ECOLOGICAL MONOGRAPHS LA English DT Article C1 COLORADO STATE UNIV,DEPT RADIOL & RADIAT BIOL,FT COLLINS,CO 80523. RP WHICKER, FW (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29801, USA. NR 95 TC 82 Z9 83 U1 1 U2 5 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE, NW, STE 400, WASHINGTON, DC 20036 SN 0012-9615 J9 ECOL MONOGR JI Ecol. Monogr. PD DEC PY 1990 VL 60 IS 4 BP 471 EP 496 DI 10.2307/1943017 PG 26 WC Ecology SC Environmental Sciences & Ecology GA EK947 UT WOS:A1990EK94700005 ER PT J AU NIELS, M AF NIELS, M TI POLITICS OF THE LIBRARY OF THE FUTURE SO ELECTRONIC LIBRARY LA English DT Article RP NIELS, M (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LAWRENCE LIVERMORE NATL LAB,DEPT TECH INFORMAT,LIVERMORE,CA 94551, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU LEARNED INFORMATION LTD PI OXFORD PA WOODSIDE, HINKSEY HILL, OXFORD, ENGLAND OX1 5AU SN 0264-0473 J9 ELECTRON LIBR JI Electron. Libr. PD DEC PY 1990 VL 8 IS 6 BP 408 EP 411 DI 10.1108/eb045013 PG 4 WC Information Science & Library Science SC Information Science & Library Science GA EX678 UT WOS:A1990EX67800003 ER PT J AU BERRY, L HIRST, E AF BERRY, L HIRST, E TI THE US-DOE LEAST-COST UTILITY PLANNING PROGRAM SO ENERGY LA English DT Article AB This paper deals with the most significant accomplishments of recent projects sponsored by the U.S. Department of Energy's Least-Cost Utility Planning Program. This overview, with its accompanying bibliography, is designed to make the resources of these projects, completed in 1989, widely accessible to utility planners and regulators. The most significant contributions of the projects relate to three areas: (1) DSM technology assessments and database development, (2) assessments of current planning methods and future policy directions, and (3) consensus building and the development of organizational structures to support least-cost planning. RP BERRY, L (reprint author), OAK RIDGE NATL LAB,POB 2008,OAK RIDGE,TN 37831, USA. NR 29 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD DEC PY 1990 VL 15 IS 12 BP 1107 EP 1117 DI 10.1016/0360-5442(90)90102-8 PG 11 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA EP121 UT WOS:A1990EP12100004 ER PT J AU PERLACK, RD JONES, HGM WADDLE, DB AF PERLACK, RD JONES, HGM WADDLE, DB TI A SURVEY OF RENEWABLE ENERGY TECHNOLOGIES FOR RURAL APPLICATIONS SO ENERGY LA English DT Article ID SYSTEMS; WIND AB The availability of modern energy has long been recognized as one of the requirements of rural economic development. The recent advances that have been made in renewable energy technologies have broadened their applicability despite the recent decline in world oil prices. In this paper, we summarize the technology status of renewable energy technologies (photovoltaics, wind energy, hydro, and biomass technologies) that are considered appropriate for rural areas. In addition, we discuss the economic and institutional constraints that inhibit their widespread dissemination in rural areas. C1 OAK RIDGE ASSOCIATED UNIV,INST ENERGY ANAL,WASHINGTON,DC 20036. RP PERLACK, RD (reprint author), OAK RIDGE NATL LAB,DIV ENERGY,OAK RIDGE,TN 37831, USA. NR 25 TC 5 Z9 7 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD DEC PY 1990 VL 15 IS 12 BP 1119 EP 1127 DI 10.1016/0360-5442(90)90103-9 PG 9 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA EP121 UT WOS:A1990EP12100005 ER PT J AU KREITH, F NORTON, P BROWN, D AF KREITH, F NORTON, P BROWN, D TI A COMPARISON OF CO2 EMISSIONS FROM FOSSIL AND SOLAR POWER-PLANTS IN THE UNITED-STATES SO ENERGY LA English DT Article ID CLIMATE AB We present estimates of the lifetime carbon dioxide emissions from coal-fired, photovoltaic, and solar thermal power plants in the United States. These CO2 estimates are based on a net energy analysis derived from both operational systems and detailed design studies. It appears that energy-conservation measures and shifting from fossil to renewable energy sources have significant long-term potential to reduce CO2 production caused by energy generation. The implications of these results for a national energy policy are discussed. C1 KREITH ENGN INC, BOULDER, CO USA. PACIFIC NW LAB, RICHLAND, WA 99352 USA. RP KREITH, F (reprint author), SOLAR ENERGY RES INST, GOLDEN, CO 80401 USA. NR 41 TC 27 Z9 27 U1 1 U2 11 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-5442 J9 ENERGY JI Energy PD DEC PY 1990 VL 15 IS 12 BP 1181 EP 1198 DI 10.1016/0360-5442(90)90110-N PG 18 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA EP121 UT WOS:A1990EP12100012 ER PT J AU HATTEMERFREY, HA TRAVIS, CC LAND, ML AF HATTEMERFREY, HA TRAVIS, CC LAND, ML TI BENZENE - ENVIRONMENTAL PARTITIONING AND HUMAN EXPOSURE SO ENVIRONMENTAL RESEARCH LA English DT Article ID ASSESSMENT METHODOLOGY TEAM; VOLATILE ORGANIC-COMPOUNDS; NEW-JERSEY; PERSONAL EXPOSURES; CHEMICALS; BIOCONCENTRATION; BIOACCUMULATION; POLLUTANTS; ATMOSPHERE; CALIFORNIA C1 OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OFF RISK ANAL,OAK RIDGE,TN 37831. RP HATTEMERFREY, HA (reprint author), LEE WAN & ASSOCIATES INC,120 S JEFFERSON CIRCLE,SUITE 100,OAK RIDGE,TN 37830, USA. RI Land, Miriam/A-6200-2011 OI Land, Miriam/0000-0001-7102-0031 NR 47 TC 23 Z9 23 U1 1 U2 4 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0013-9351 J9 ENVIRON RES JI Environ. Res. PD DEC PY 1990 VL 53 IS 2 BP 221 EP 232 DI 10.1016/S0013-9351(05)80120-3 PG 12 WC Environmental Sciences; Public, Environmental & Occupational Health SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health GA EP129 UT WOS:A1990EP12900008 PM 2253601 ER PT J AU DOTY, CB TRAVIS, CC AF DOTY, CB TRAVIS, CC TI IS EPAS NATIONAL-PRIORITIES LIST CORRECT SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article RP DOTY, CB (reprint author), OAK RIDGE NATL LAB,OFF RISK ANAL,OAK RIDGE,TN 37830, USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD DEC PY 1990 VL 24 IS 12 BP 1778 EP 1780 DI 10.1021/es00082a601 PG 3 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA EK685 UT WOS:A1990EK68500004 ER PT J AU DOHRN, R PRAUSNITZ, JM AF DOHRN, R PRAUSNITZ, JM TI A SIMPLE PERTURBATION TERM FOR THE CARNAHAN-STARLING EQUATION OF STATE SO FLUID PHASE EQUILIBRIA LA English DT Article C1 UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT S CHEM SCI,BERKELEY,CA 94720. NR 3 TC 25 Z9 25 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-3812 J9 FLUID PHASE EQUILIBR JI Fluid Phase Equilib. PD DEC PY 1990 VL 61 IS 1-2 BP 53 EP 69 DI 10.1016/0378-3812(90)90003-6 PG 17 WC Thermodynamics; Chemistry, Physical; Engineering, Chemical SC Thermodynamics; Chemistry; Engineering GA EL076 UT WOS:A1990EL07600003 ER PT J AU JONES, RH MCLEOD, KW AF JONES, RH MCLEOD, KW TI GROWTH AND PHOTOSYNTHETIC RESPONSES TO A RANGE OF LIGHT ENVIRONMENTS IN CHINESE TALLOWTREE AND CAROLINA ASH SEEDLINGS SO FOREST SCIENCE LA English DT Article DE SAPIUM-SEBIFERUM; FRAXINUS-CAROLINIANA; DRY MASS PARTITIONING; SHADE TOLERANCE; INVADING SPECIES ID LOBLOLLY-PINE; EXCHANGE AB Potted seedlings of Chinese tallowtree (Sapium sebiferum [L.] Roxb.) and Carolina ash (Fraxinus caroliniana Mill.) were grown in 5%, 20%, 53%, and 100% of full sunlight. Growth and dry mass partitioning at all light levels, differences between leaf photosynthetic systems developed at 20% and 100% light, and crown profiles of net photosynthesis (P(N)) in 53% of full sunlight were measured. Tallowtree dry mass peaked at 100%, light while ash dry mass peaked at 53% light. Expressed as a proportion of peak dry mass within species, growth of tallowtree exceeded that of ash at all light levels except 53% of full sunlight. In all but 100% light, tallowtree partitioned more dry mass to leaves than did Carolina ash. For plants grown in 100% light, P(N) was highly variable with low values in some tallowtree and most ash leaves, although highest P(N) occurred in ash. For plants grown in 20% light, P(N) was closely related to photosynthetic photon flux density (PPFD), and both species had similar P(N) values at any given PPFD. For plants in 53% light, maximum P(N) occurred at the top of the crown in tallowtree and in the middle of the crown in Carolina ash. Tallowtree seedlings are shade tolerant and yet grow rapidly in full sun. C1 SAVANNAH RIVER ECOL LAB,AIKEN,SC 29802. RP JONES, RH (reprint author), AUBURN UNIV,SCH FORESTRY,AUBURN,AL 36849, USA. NR 11 TC 44 Z9 48 U1 0 U2 0 PU SOC AMER FORESTERS PI BETHESDA PA 5400 GROSVENOR LANE, BETHESDA, MD 20814 SN 0015-749X J9 FOREST SCI JI For. Sci. PD DEC PY 1990 VL 36 IS 4 BP 851 EP 862 PG 12 WC Forestry SC Forestry GA EQ835 UT WOS:A1990EQ83500001 ER PT J AU TAYLOR, BE MAHONEY, DL AF TAYLOR, BE MAHONEY, DL TI ZOOPLANKTON IN RAINBOW BAY, A CAROLINA BAY POND - POPULATION-DYNAMICS IN A TEMPORARY HABITAT SO FRESHWATER BIOLOGY LA English DT Article ID DAPHNIA-CARINATA; ARCTIC PONDS; PREDATION; ROTIFERS; CLADOCERANS; MORPHOLOGY; COMMUNITY; PATTERNS; ECOLOGY; PREY AB 1. Rainbow Bay is a temporary freshwater pond in South Carolina, U.S.A., that typically fills in winter and dries in spring or summer. We studied population dynamics of zooplankton in 1984 and 1985 when it held water for 282 and 57 days, respectively. The zooplankton were divers, including one species of calanoid copepod, nine or more cyclopoid copepods, nineteen or more cladocerans, and twelve or more rotifers. The community was initially dominated by the copepods Diaptomus stagnalis and Acanthocyclops vernalis or Diacyclops haueri, later by cyclopoids and cladocerans including Daphnia laevis and Simocephalus spp. 2. Laboratory experiments with sediments from the dry pond support the inference from field data that time of emergence from resting stages was a proximate cause of the initial succession of species. The experiments also showed that eggs of the calanoid copepod, Diaptomus stagnalis, were inhibited from hatching in early November, but became ready to hatch by late November. A similar inhibition was not observed for cladocerans or cyclopoid copepods. 3. Food limitation appeared to influence population dynamics following emergence. For the cladocerans Daphnia laevis and Simocephalus spp., great reductions in size-specific fecundity occurred 1 month (1985) or 3 months (1984) after the pond filled and were associated with disappearance of the rotifer Conochilus hippocrepis. The cladocerans produced ephippia when their fecundities declined. Reproduction of Diaptomus occurred before cladoceran fecundities decreased in 1984, but during their decline in 1985. Broods of Diaptomus were smaller in 1985. 4. The impact of invertebrate predators was probably greater than that of vertebrate predators, but neither was sufficient to prevent over-exploitation of food resources. Prey consumption rates by salamander larvae were estimated from diets and population densities of the larvae in 1984 (Taylor et al., 1988). Their impact on the zooplankton was low in February, increased in March and April as the larvae grew, and then declined as the larvae switched to other prey or metamorphosed and left the pond. RP TAYLOR, BE (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29801, USA. NR 37 TC 35 Z9 36 U1 2 U2 10 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0046-5070 J9 FRESHWATER BIOL JI Freshw. Biol. PD DEC PY 1990 VL 24 IS 3 BP 597 EP 612 DI 10.1111/j.1365-2427.1990.tb00735.x PG 16 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA ET053 UT WOS:A1990ET05300015 ER PT J AU CONN, RW DIPPEL, KH GAUSTER, WB MIYAHARA, A AF CONN, RW DIPPEL, KH GAUSTER, WB MIYAHARA, A TI THE TOROIDAL BELT PUMP LIMITER, ALT-II, IN THE TEXTOR TOKAMAK SO FUSION ENGINEERING AND DESIGN LA English DT Article ID CONFINEMENT; DISCHARGES AB A toroidal belt pump limiter has been designed, constructed, installed and operated in the TEXTOR tokamak. The Advanced Limiter TEST-II, or ALT-II, is carried out as a partnership under a joint agreement between the European Community, Japan and the United States. ALT-II is designed to withstand the high heat fluxes (greater than 500 W/cm2) intrinsic to the boundary region of tokamak plasmas while simultaneously removing 5% to 10% of the core plasma efflux. The belt consists of eight segments, each 28 cm wide, 150 cm long, and 1.2 cm thick, and each is covered with shaped graphite tiles. Mounted behind each blade is a "scoop" system which captures plasma flowing past the leading edges and behind the blades. This plasma neutralizes on a collector plate and the resulting neutral gas is pumped. During ohmic discharges, 50 to 60 A of current is collected in the scoops and removal rates up to 0.25 Torr-1/s are achieved. The blades are instrumented with Langmuir probes and thermo couples, and other diagnostics include infrared cameras, H-alpha-monitors, pressure gauges, helium charge exchange spectroscopy, and helium gas diagnostics. The plasma edge and the operation of the pump limiter system are described. C1 UNIV CALIF LOS ANGELES, DEPT MECH AEROSP & NUCL ENGN, LOS ANGELES, CA 90024 USA. FORSCHUNGSZENTRUM JULICH, ASSOC EURATOM KFA, INST PLASMAPHYS, W-5170 JULICH 1, GERMANY. SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. NAGOYA UNIV, INST PLASMA PHYS, CHIKUSA KU, NAGOYA, AICHI 464, JAPAN. RP CONN, RW (reprint author), UNIV CALIF LOS ANGELES, INST PLASMA & FUS RES, LOS ANGELES, CA 90024 USA. NR 41 TC 6 Z9 6 U1 0 U2 2 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP 251 EP 259 DI 10.1016/0920-3796(90)90045-8 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000002 ER PT J AU KOHLHAAS, W KOSKI, JA UCHIKAWA, T AF KOHLHAAS, W KOSKI, JA UCHIKAWA, T TI ENGINEERING DESIGN CONCEPT OF THE ADVANCED LIMITER TEST-II SO FUSION ENGINEERING AND DESIGN LA English DT Article AB A description is given of the engineering design concept of the Advanced Limiter Test-II. C1 SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. MITSUBISHI HEAVY IND CO LTD, KOBE, JAPAN. RP KOHLHAAS, W (reprint author), FORSCHUNGSZENTRUM JULICH, ASSOC EURATOM, W-5170 JULICH 1, GERMANY. NR 7 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP 261 EP 265 DI 10.1016/0920-3796(90)90046-9 PG 5 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000003 ER PT J AU MCGRATH, RT AF MCGRATH, RT TI SHAPING OF THE PLASMA FACING SURFACES OF THE ALT-II FULL TOROIDAL BELT LIMITER SO FUSION ENGINEERING AND DESIGN LA English DT Article ID PUMP LIMITERS AB The Advanced Limiter Test-II, ALT-II, is a full toroidal belt limiter that began operation on TEXTOR in April 1987. The experimental program investigates the effects of a full toroidal belt on particle confinement and on particle exhaust from the system. ALT-II is designed to operate with 6 MW of plasma heating for three second discharges. For design purposes we assumed that as much as 4 MW is deposited on the limiters. This paper describes how the design conditions were coupled with a detailed description of the tokamak plasma edge region to determine the shapes of the graphite tiles mounted on the ALT-II blades. The front faces of these tiles, the surfaces adjacent to the plasma, were profiled poloidally so that when the energy scrape-off length, lambda-e, is 1.0 cm the active surfaces experience a heat flux of 270 W/cm2. The ALT-II belt consists of eight individually movable blades with a 12.0 cm gap, for diagnostic access, between adjacent blades. Power flow through these gaps produces hot spots on the ends of each blade. Hot spots can also be generated on the ends if one blade is misaligned, protruding further into the plasma, than the adjacent blades. Heat flux loads associated with these hot spots were minimized by providing toroidal shaping to the end tiles in addition to the poloidal, front face, profiling mentioned above. The toroidal profiling is such that a single blade protruding 3 mm further into the plasma than the next nearest blade experiences 1 kW/cm2 on the misaligned edge during full power operation. At this heat load, plasma contamination is maintained at an acceptable level since surface temperatures do no exceed 1800-degrees-C, well below the temperature at which graphite sublimation becomes a serious problem. RP MCGRATH, RT (reprint author), SANDIA NATL LABS,DIV FUS TECHNOL,ALBUQUERQUE,NM 87185, USA. NR 19 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP 267 EP 282 DI 10.1016/0920-3796(90)90047-A PG 16 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000004 ER PT J AU KOSKI, JA WATSON, RD AF KOSKI, JA WATSON, RD TI ENGINEERING DESIGN AND ANALYSES OF THE ALT-II PARTICLE COLLECTION SCOOPS AND DEFLECTOR PLATES SO FUSION ENGINEERING AND DESIGN LA English DT Article ID PUMP LIMITER; TEXTOR AB The magnetic field line tracing and heat transfer analyses required for the design of the particle collection scoops and deflector plates for the Advanced Limiter Test-II (ALT-II) are described, and special fabrication techniques are discussed. For the magnetic field line analysis, expressions for the poloidal and toroidal magnetic fields based on Shafranov stability criteria were used to define areas located at the back of the blade which are shadowed by adjacent deflector plates. The outline of the shadowed areas was then used to contour the sides of the particle collection scoops. Finite element thermal analyses were used to determine the response of the deflector plates, and to adjust the design for the anticipated incident peak heat fluxes of 3000 W/cm2. Based on the thermal analyses, a 2 mm overhang of the armor tiles over the edge of the blade was selected, and pyrolytic graphite was chosen as the deflector plate material. The computer aided design and fabrication methods used to complete assemblies, including a transfer of computer-aided-design data to numerical control machining tapes, are discussed, and some of the experience gained is summarized. RP KOSKI, JA (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 7 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP 291 EP 298 DI 10.1016/0920-3796(90)90049-C PG 8 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000006 ER PT J AU BROWN, GW WATKINS, JG AF BROWN, GW WATKINS, JG TI A REMOTELY CONTROLLED POSITIONING SYSTEM FOR THE ALT-II LIMITER BLADES SO FUSION ENGINEERING AND DESIGN LA English DT Article AB The limiter module positioning system for ALT-II is described, with emphasis on the components which operate in the high vacuum, high temperature TEXTOR environment. The design constraints imposed by the environment are discussed, including material compatibility and vacuum lubrication. The development of each component operating inside TEXTOR is described. Problems with the system's universal joints are reported, and the current status of system performance is given. RP BROWN, GW (reprint author), SANDIA NATL LABS,DIV FUS TECHNOL,ALBUQUERQUE,NM 87185, USA. NR 4 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP 299 EP 305 DI 10.1016/0920-3796(90)90050-G PG 7 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000007 ER PT J AU CONN, RW GAUSTER, WB KOHLHAAS, W MIYAHARA, A AF CONN, RW GAUSTER, WB KOHLHAAS, W MIYAHARA, A TI SPECIAL ISSUE ON THE ADVANCED LIMITER TEST-II SO FUSION ENGINEERING AND DESIGN LA English DT Editorial Material C1 NAGOYA UNIV, INST PLASMA PHYS, DIV ENGN, CHIKUSA KU, NAGOYA, AICHI 464, JAPAN. FORSCHUNGSZENTRUM JULICH, ASSOC EURATOM, W-5170 JULICH 1, GERMANY. SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. RP CONN, RW (reprint author), UNIV CALIF LOS ANGELES, INST PLASMA & FUSION RES, 44-139 ENGN 4, 405 HILGARD AVE, LOS ANGELES, CA 90024 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0920-3796 J9 FUSION ENG DES JI Fusion Eng. Des. PD DEC PY 1990 VL 13 IS 3 BP R1 EP R1 DI 10.1016/0920-3796(90)90044-7 PG 1 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EQ060 UT WOS:A1990EQ06000001 ER PT J AU CARRERA, R MONTALVO, E VANDAM, JW FU, GY HIVELY, LM MILEY, GH ROSENBLUTH, MN TAMOR, S AF CARRERA, R MONTALVO, E VANDAM, JW FU, GY HIVELY, LM MILEY, GH ROSENBLUTH, MN TAMOR, S TI PRELIMINARY-ANALYSIS OF ALPHA-PARTICLE EFFECTS IN THE FUSION IGNITION EXPERIMENT IGNITEX SO FUSION TECHNOLOGY LA English DT Article C1 CRPP,LAUSANNE,SWITZERLAND. OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831. UNIV ILLINOIS,DEPT NUCL ENGN,URBANA,IL 61801. UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92039. LA JOLLA INST,SAN DIEGO,CA 92037. RP CARRERA, R (reprint author), UNIV TEXAS,INST FUS ENGN,AUSTIN,TX 78712, USA. NR 23 TC 0 Z9 0 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0748-1896 J9 FUSION TECHNOL JI Fusion Technol. PD DEC PY 1990 VL 18 IS 4 BP 535 EP 555 PG 21 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EL454 UT WOS:A1990EL45400001 ER PT J AU ZWEBEN, SJ STRACHAN, JD YOUNG, KM AF ZWEBEN, SJ STRACHAN, JD YOUNG, KM TI ALPHA-PARTICLE EXPERIMENTS ON THE TOKAMAK FUSION TEST REACTOR AND THE COMPACT IGNITION TOKAMAK SO FUSION TECHNOLOGY LA English DT Article C1 PRINCETON UNIV,PRINCETON,PLASMA PHYS LAB,DIV PLASMA DIAGNOST,PRINCETON,NJ 08543. RP ZWEBEN, SJ (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 27 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 0748-1896 J9 FUSION TECHNOL JI Fusion Technol. PD DEC PY 1990 VL 18 IS 4 BP 573 EP 577 PG 5 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EL454 UT WOS:A1990EL45400003 ER PT J AU HANEY, SW PERKINS, LJ MANDREKAS, J STACEY, WM AF HANEY, SW PERKINS, LJ MANDREKAS, J STACEY, WM TI ACTIVE CONTROL OF BURN CONDITIONS FOR THE INTERNATIONAL THERMONUCLEAR EXPERIMENTAL REACTOR SO FUSION TECHNOLOGY LA English DT Article C1 GEORGIA INST TECHNOL,FUS RES CTR,ATLANTA,GA 30332. RP HANEY, SW (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV MAGNET FUS ENERGY,POB 808,L-644,LIVERMORE,CA 94550, USA. NR 23 TC 23 Z9 23 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0748-1896 J9 FUSION TECHNOL JI Fusion Technol. PD DEC PY 1990 VL 18 IS 4 BP 606 EP 617 PG 12 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EL454 UT WOS:A1990EL45400008 ER PT J AU CHANG, CS IMRE, K WEITZNER, H COLESTOCK, P AF CHANG, CS IMRE, K WEITZNER, H COLESTOCK, P TI CONTROL OF ALPHA-PARTICLE TRANSPORT BY ION-CYCLOTRON RESONANCE HEATING SO FUSION TECHNOLOGY LA English DT Article C1 NYU,COURANT INST MATH SCI,NEW YORK,NY 10012. KOREA ADV INST SCI & TECHNOL,PHYS,SEOUL 131,SOUTH KOREA. RP CHANG, CS (reprint author), PRINCETON UNIV,PLASMA PHYS LAB,POB 451,PRINCETON,NJ 08543, USA. NR 8 TC 5 Z9 5 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0748-1896 J9 FUSION TECHNOL JI Fusion Technol. PD DEC PY 1990 VL 18 IS 4 BP 618 EP 624 PG 7 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EL454 UT WOS:A1990EL45400009 ER PT J AU MORREY, JR CAFFEE, MW FARRAR, H HOFFMAN, NJ HUDSON, GB JONES, RH KURZ, MD LUPTON, J OLIVER, BM RUIZ, BV WACKER, JF VANVEEN, A AF MORREY, JR CAFFEE, MW FARRAR, H HOFFMAN, NJ HUDSON, GB JONES, RH KURZ, MD LUPTON, J OLIVER, BM RUIZ, BV WACKER, JF VANVEEN, A TI MEASUREMENTS OF HELIUM IN ELECTROLYZED PALLADIUM SO FUSION TECHNOLOGY LA English DT Note C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB, DIV NUCL CHEM, LIVERMORE, CA 94550 USA. ROCKWELL INT CORP, ROCKETDYNE DIV, CANOGA PK, CA 91303 USA. ROCKWELL INT CORP, ENERGY TECHNOL ENGN CTR, CANOGA PK, CA 91304 USA. WOODS HOLE OCEANOG INST, WOODS HOLE, MA 02543 USA. UNIV CALIF SANTA BARBARA, INST MARINE SCI, SANTA BARBARA, CA 93106 USA. DELFT UNIV TECHNOL, INTERFAC REACTOR INST, DIV REACTOR PHYS, 2629 JB DELFT, NETHERLANDS. RP MORREY, JR (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99302 USA. RI Caffee, Marc/K-7025-2015 OI Caffee, Marc/0000-0002-6846-8967 NR 18 TC 16 Z9 16 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0748-1896 J9 FUSION TECHNOL JI Fusion Technol. PD DEC PY 1990 VL 18 IS 4 BP 659 EP 668 PG 10 WC Nuclear Science & Technology SC Nuclear Science & Technology GA EL454 UT WOS:A1990EL45400015 ER PT J AU SASAKI, M NAKAMURA, T AF SASAKI, M NAKAMURA, T TI GRAVITATIONAL-RADIATION FROM AN EXTREME KERR BLACK-HOLE SO GENERAL RELATIVITY AND GRAVITATION LA English DT Article C1 KYOTO UNIV,UJI RES CTR,YUKAWA INST THEORET PHYS,UJI,KYOTO 611,JAPAN. NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN. RP SASAKI, M (reprint author), NASA,FERMILAB ASTROPHYS CTR,FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510, USA. OI Sasaki, Misao/0000-0001-5924-0664 NR 23 TC 16 Z9 16 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0001-7701 J9 GEN RELAT GRAVIT JI Gen. Relativ. Gravit. PD DEC PY 1990 VL 22 IS 12 BP 1351 EP 1366 DI 10.1007/BF00756835 PG 16 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA EK674 UT WOS:A1990EK67400002 ER PT J AU KING, JS MORTIMER, RK AF KING, JS MORTIMER, RK TI A POLYMERIZATION MODEL OF CHIASMA INTERFERENCE AND CORRESPONDING COMPUTER-SIMULATION SO GENETICS LA English DT Article C1 UNIV CALIF BERKELEY,DEPT MOLEC & CELL BIOL,DIV GENET,BERKELEY,CA 94720. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV CELLULAR & MOLEC BIOL,BERKELEY,CA 94720. RP KING, JS (reprint author), UNIV CALIF BERKELEY,GRAD GRP BIOPHYS,BERKELEY,CA 94720, USA. FU NCRR NIH HHS [5 P40 RR04231-02]; NIEHS NIH HHS [ES07075]; NIGMS NIH HHS [GM30990] NR 43 TC 89 Z9 91 U1 0 U2 1 PU GENETICS PI BALTIMORE PA 428 EAST PRESTON ST, BALTIMORE, MD 21202 SN 0016-6731 J9 GENETICS JI Genetics PD DEC PY 1990 VL 126 IS 4 BP 1127 EP 1138 PG 12 WC Genetics & Heredity SC Genetics & Heredity GA EL334 UT WOS:A1990EL33400029 PM 2127577 ER PT J AU MUDGETT, JS MACINNES, MA AF MUDGETT, JS MACINNES, MA TI ISOLATION OF THE FUNCTIONAL HUMAN EXCISION REPAIR GENE ERCC5 BY INTERCOSMID RECOMBINATION SO GENOMICS LA English DT Article RP MUDGETT, JS (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV LIFE SCI,GENET GRP,LOS ALAMOS,NM 87545, USA. NR 40 TC 73 Z9 74 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 0888-7543 J9 GENOMICS JI Genomics PD DEC PY 1990 VL 8 IS 4 BP 623 EP 633 DI 10.1016/0888-7543(90)90248-S PG 11 WC Biotechnology & Applied Microbiology; Genetics & Heredity SC Biotechnology & Applied Microbiology; Genetics & Heredity GA EL475 UT WOS:A1990EL47500003 PM 2276736 ER PT J AU MEIKE, A AF MEIKE, A TI A MICROMECHANICAL PERSPECTIVE ON THE ROLE OF DISLOCATIONS IN SELECTIVE DISSOLUTION SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID PRESSURE SOLUTION; ETCH PITS; DEFORMATION; KINETICS; STRESS; QUARTZ; RUTILE; THERMODYNAMICS; CRYSTALS; FELDSPAR AB Investigations of dislocation enhanced selective dissolution rarely consider the consequences of dislocation dynamics. The purpose of this work is to point out its significance. A strain energy inventory of a variety of dislocation configurations (microstructure) exposes energetic variations of the same order of magnitude as that calculated for dislocation density. Therefore, experiments that lack microstructural control could obscure the observable relationships between dislocation density and reaction rate. The inventory associates free dislocations with the greatest strain energy per unit line length. Dynamical considerations suggest that low homologous temperature and shear stress favor the tangles of free dislocations that most effectively enhance selective dissolution. Conversely, crystals that exhibit the greatest macroscopic strain lose their potential for dissolution. A comparison of micromechanical properties indicates that dislocation enhanced dissolution can occur across a wide range of crustal depths, dependent upon the mineral assemblage. C1 UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720. NR 46 TC 9 Z9 9 U1 2 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD DEC PY 1990 VL 54 IS 12 BP 3347 EP 3352 DI 10.1016/0016-7037(90)90289-W PG 6 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA EQ638 UT WOS:A1990EQ63800006 ER PT J AU CASEY, WH LASAGA, AC GIBBS, GV AF CASEY, WH LASAGA, AC GIBBS, GV TI MECHANISMS OF SILICA DISSOLUTION AS INFERRED FROM THE KINETIC ISOTOPE EFFECT SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID RATES; GLASS; CHEMISTRY; MODELS; WATER; TIME; H2O; D2O AB The rate of dissolution of many rock-forming minerals is controlled by the hydrolysis of the bridging silicate bonds at the mineral surface. This hydrolysis can be studied at a detailed level by combining experiments in isotopically distinct solutions with molecular-orbital calculations of the reaction energetics and geometry. These calculations are linked to the macroscopic process of dissolution via the transition-state theory. Rates of silicate leaching and dissolution in D2O and H2O differ for several reasons. First, hydrolysis involves transfer of hydrogen from the solution to a bridging siloxane bond at the mineral surface. The transition state equilibrium describing this reaction varies with the vibrational properties (and, hence, isotopic composition) of the reactant and the transition state. Secondly, the equilibrium acid-base properties of the oxide surface of H2O and D2O are not identical. These differences are important because rates of hydrolysis reactions are enhanced by adsorbed hydrogen and hydroxyl ions. On the basis of the molecular orbital calculations and an assumed mechanism of hydrolysis, quartz dissolution is predicted to be roughly a factor of four slower in D2O than in H2O at pH = pD = 3. The activation energy is predicted to be almost-equal-to 20 kcal/mol, which is in agreement with values measured at hydrothermal conditions. At pH/pD conditions near the isoelectric point of quartz, and in the temperature range 20-70-degrees-C, the measured rate in D2O is only about 15% slower than in H2O, and the activation energy is almost-equal-to 8 kcal/mol. The activation energy is slightly higher at pH/pD = 11, but the kinetic isotope effect remains small. The discrepancy suggests that the hydrogen transfer to bridging oxygen from water at the experimental conditions: more rapid than modeled and may preceed early in the overall reaction. C1 YALE UNIV,KLINE GEOL LAB,NEW HAVEN,CT 06511. VIRGINIA POLYTECH INST & STATE UNIV,DEPT GEOL SCI,BLACKSBURG,VA 24061. RP CASEY, WH (reprint author), SANDIA NATL LABS,GEOCHEM RES,ALBUQUERQUE,NM 87185, USA. NR 50 TC 62 Z9 63 U1 2 U2 24 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD DEC PY 1990 VL 54 IS 12 BP 3369 EP 3378 DI 10.1016/0016-7037(90)90291-R PG 10 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA EQ638 UT WOS:A1990EQ63800008 ER PT J AU ALDRICH, MJ DETHIER, DP AF ALDRICH, MJ DETHIER, DP TI STRATIGRAPHIC AND TECTONIC EVOLUTION OF THE NORTHERN ESPANOLA BASIN, RIO-GRANDE RIFT, NEW-MEXICO SO GEOLOGICAL SOCIETY OF AMERICA BULLETIN LA English DT Article C1 WILLIAMS COLL,DEPT GEOL,WILLIAMSTOWN,MA 01267. RP ALDRICH, MJ (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV EARTH & ENVIRONM SCI,MS D462,LOS ALAMOS,NM 87545, USA. NR 43 TC 16 Z9 17 U1 0 U2 2 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0016-7606 J9 GEOL SOC AM BULL JI Geol. Soc. Am. Bull. PD DEC PY 1990 VL 102 IS 12 BP 1695 EP 1705 PG 11 WC Geosciences, Multidisciplinary SC Geology GA EM176 UT WOS:A1990EM17600007 ER PT J AU WALLMANN, PC POLLARD, DD HILDRETH, W EICHELBERGER, JC AF WALLMANN, PC POLLARD, DD HILDRETH, W EICHELBERGER, JC TI NEW STRUCTURAL LIMITS ON MAGMA CHAMBER LOCATIONS AT THE VALLEY OF 10000 SMOKES, KATMAI NATIONAL-PARK, ALASKA SO GEOLOGY LA English DT Article C1 STANFORD UNIV,DEPT APPL EARTH SCI,STANFORD,CA 94305. US GEOL SURVEY,MENLO PK,CA 94025. SANDIA NATL LABS,DIV GEOCHEM 6233,ALBUQUERQUE,NM 87185. RP WALLMANN, PC (reprint author), STANFORD UNIV,DEPT GEOL,STANFORD,CA 94305, USA. RI Eichelberger, John/H-6199-2016 NR 25 TC 21 Z9 21 U1 0 U2 4 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0091-7613 J9 GEOLOGY JI Geology PD DEC PY 1990 VL 18 IS 12 BP 1240 EP 1243 DI 10.1130/0091-7613(1990)018<1240:NSLOMC>2.3.CO;2 PG 4 WC Geology SC Geology GA EM179 UT WOS:A1990EM17900018 ER PT J AU SEGALL, P MCKEE, EH MARTEL, SJ TURRIN, BD AF SEGALL, P MCKEE, EH MARTEL, SJ TURRIN, BD TI LATE CRETACEOUS AGE OF FRACTURES IN THE SIERRA-NEVADA BATHOLITH, CALIFORNIA SO GEOLOGY LA English DT Article C1 STANFORD UNIV,DEPT GEOPHYS,STANFORD,CA 94305. UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV EARTH SCI,BERKELEY,CA 94720. RP SEGALL, P (reprint author), US GEOL SURVEY,MENLO PK,CA 94025, USA. NR 18 TC 40 Z9 40 U1 0 U2 3 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0091-7613 J9 GEOLOGY JI Geology PD DEC PY 1990 VL 18 IS 12 BP 1248 EP 1251 DI 10.1130/0091-7613(1990)018<1248:LCAOFI>2.3.CO;2 PG 4 WC Geology SC Geology GA EM179 UT WOS:A1990EM17900020 ER PT J AU WINSKE, D OMIDI, N AF WINSKE, D OMIDI, N TI ELECTROMAGNETIC ION/ION CYCLOTRON INSTABILITY AT SLOW SHOCKS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID ION-BEAM INSTABILITIES; MODE SHOCKS AB The linear and nonlinear properties of the obliquely propagating electromagnetic ion/ion cyclotron instability are investigated. The instability is driven by the relative, field-aligned streaming of two ion beams and can exist at a lower velocity threshold than the more commonly studied, parallel propagating electromagnetic ion beam instabilities. It is shown that the instability plays an important role in the formation of, dissipation at, and waves upstream of slow mode shocks. Possible application of this instability to ion beams in the plasma sheet boundary layer is also briefly discussed. C1 UNIV CALIF SAN DIEGO,DEPT ELECT & COMP ENGN,LA JOLLA,CA 92093. RP WINSKE, D (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,DIV APPL THEORET PHYS,LOS ALAMOS,NM 87545, USA. NR 13 TC 25 Z9 25 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 DEC PY 1990 VL 17 IS 13 BP 2297 EP 2300 DI 10.1029/GL017i013p02297 PG 4 WC Geosciences, Multidisciplinary SC Geology GA EN701 UT WOS:A1990EN70100005 ER PT J AU MCCALLUM, DA DIXON, PM AF MCCALLUM, DA DIXON, PM TI REDUCING BIAS IN ESTIMATES OF THE RICHARDS GROWTH-FUNCTION SHAPE PARAMETER SO GROWTH DEVELOPMENT AND AGING LA English DT Article DE RICHARDS GROWTH FUNCTION; SHAPE PARAMETER; NONLINEAR REGRESSION; PROCESS ERROR; SIGMOID FUNCTIONS; BIAS IN GROWTH PARAMETER ESTIMATION ID SIGMOID GROWTH; WOOD DUCKS; MODEL; PATTERNS; BIRDS AB A process error model developed by White and Brisbin (1980) is used frequently for estimation of the parameters of the Richards sigmoid growth function. The Richards function includes a parameter, m, that describes the shape of familiar three-parameter functions, such as the monomolecular (m = 0), von Bertalanffy (m = 2/3), Gompertz (m --> 1) and logistic (m = 2), as well as other sigmoid functions. We show that this model systematically underestimates the shape parameter, m. In calibration runs and simulations, bias decreased with increased frequency of sampling during the period of rapid growth and with smaller values of true m. Relative bias was insensitive to the magnitude of m. A simple correction reduced the bias to negligible values for both deterministic and stochastic process error models. Biases in estimated asymptote, A, and growing time, T, were small for a variety of sampling intervals and shape parameters. RP MCCALLUM, DA (reprint author), SAVANNAH RIVER ECOL LAB,DRAWER E,AIKEN,SC 29802, USA. NR 19 TC 14 Z9 14 U1 0 U2 0 PU GROWTH PUBL CO INC PI BAR HARBOR PA PO BOX 42, BAR HARBOR, ME 04609-0042 SN 0017-4793 J9 GROWTH DEVELOP AGING JI Growth Dev. Aging PD WIN PY 1990 VL 54 IS 4 BP 135 EP 141 PG 7 WC Developmental Biology; Geriatrics & Gerontology SC Developmental Biology; Geriatrics & Gerontology GA EZ507 UT WOS:A1990EZ50700001 PM 2092013 ER PT J AU CUCINOTTA, FA HAJNAL, F WILSON, JW AF CUCINOTTA, FA HAJNAL, F WILSON, JW TI ENERGY DEPOSITION AT THE BONE-TISSUE INTERFACE FROM NUCLEAR FRAGMENTS PRODUCED BY HIGH-ENERGY NUCLEONS SO HEALTH PHYSICS LA English DT Article C1 US DOE, ENVIRONM MEASUREMENTS LAB, NEW YORK, NY 10014 USA. NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA. NR 14 TC 6 Z9 6 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 819 EP 825 DI 10.1097/00004032-199012000-00005 PG 7 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500006 PM 2228609 ER PT J AU SUN, RKS AF SUN, RKS TI ESTIMATION OF NEUTRON DOSE EQUIVALENT AT THE MEZZANINE OF THE ADVANCED LIGHT-SOURCE AND THE LABORATORY BOUNDARY USING THE ORNL PROGRAM MORSE SO HEALTH PHYSICS LA English DT Article RP SUN, RKS (reprint author), UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB, DIV OCCUPAT HLTH, BERKELEY, CA 94720 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 837 EP 848 DI 10.1097/00004032-199012000-00007 PG 12 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500008 PM 2228611 ER PT J AU REYNOLDS, TD AF REYNOLDS, TD TI EFFECTIVENESS OF 3 NATURAL BIOBARRIERS IN REDUCING ROOT INTRUSION BY 4 SEMIARID PLANT-SPECIES SO HEALTH PHYSICS LA English DT Article RP REYNOLDS, TD (reprint author), US DOE, RADIOL & ENVIRONM SCI LAB, 785 DOE PL, IDAHO FALLS, ID 83402 USA. NR 18 TC 5 Z9 5 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 849 EP 852 DI 10.1097/00004032-199012000-00008 PG 4 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500009 PM 2228612 ER PT J AU PINDER, JE MCLEOD, KW ADRIANO, DC COREY, JC BONI, AL AF PINDER, JE MCLEOD, KW ADRIANO, DC COREY, JC BONI, AL TI ATMOSPHERIC DEPOSITION, RESUSPENSION, AND ROOT UPTAKE OF PU IN CORN AND OTHER GRAIN-PRODUCING AGROECOSYSTEMS NEAR A NUCLEAR-FUEL FACILITY SO HEALTH PHYSICS LA English DT Article RP PINDER, JE (reprint author), SAVANNAH RIVER ECOL LAB, AIKEN, SC 29801 USA. NR 48 TC 20 Z9 20 U1 0 U2 5 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 853 EP 867 DI 10.1097/00004032-199012000-00009 PG 15 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500010 PM 2228613 ER PT J AU POSTON, TM KLOPFER, DC SIMMONS, MA AF POSTON, TM KLOPFER, DC SIMMONS, MA TI SHORT-TERM BIOCONCENTRATION STUDIES OF NP IN FRESH-WATER BIOTA SO HEALTH PHYSICS LA English DT Article RP POSTON, TM (reprint author), PACIFIC NW LAB, POB 999, RICHLAND, WA 99352 USA. NR 11 TC 1 Z9 1 U1 0 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 869 EP 877 DI 10.1097/00004032-199012000-00010 PG 9 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500011 PM 2228614 ER PT J AU KERR, GD ECKERMAN, KF AF KERR, GD ECKERMAN, KF TI SOURCE INVENTORY LIMITS SO HEALTH PHYSICS LA English DT Article RP KERR, GD (reprint author), OAK RIDGE NATL LAB, DIV HLTH & SAFETY RES, OAK RIDGE, TN 37831 USA. NR 21 TC 2 Z9 2 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 931 EP 934 DI 10.1097/00004032-199012000-00018 PG 4 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500019 PM 2228622 ER PT J AU SCARPITTA, SC AF SCARPITTA, SC TI TEMPERATURE AND HUMIDITY EFFECTS OF RN-222 ADSORPTION ON ACTIVATED-CHARCOAL MONITORS SO HEALTH PHYSICS LA English DT Letter RP SCARPITTA, SC (reprint author), US DOE, ENVIRONM MEASUREMENTS LAB, NEW YORK, NY 10014 USA. NR 7 TC 1 Z9 1 U1 1 U2 1 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 937 EP 938 PG 2 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500022 PM 2228625 ER PT J AU BRACKETT, EM AF BRACKETT, EM TI GENMOD-PC VERSION 2.1 SO HEALTH PHYSICS LA English DT Software Review RP BRACKETT, EM (reprint author), OAK RIDGE NATL LAB, POB 2008, BLDG 2008, MS-6041, OAK RIDGE, TN 37831 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT WILLIAMS & WILKINS PI PHILADELPHIA PA 530 WALNUT ST, PHILADELPHIA, PA 19106-3621 USA SN 0017-9078 EI 1538-5159 J9 HEALTH PHYS JI Health Phys. PD DEC PY 1990 VL 59 IS 6 BP 942 EP 942 PG 1 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA EK935 UT WOS:A1990EK93500026 ER PT J AU LAUFMANN, SC DEVANEY, DM WHITING, MA AF LAUFMANN, SC DEVANEY, DM WHITING, MA TI A METHODOLOGY FOR EVALUATING POTENTIAL KBS APPLICATIONS SO IEEE EXPERT-INTELLIGENT SYSTEMS & THEIR APPLICATIONS LA English DT Article C1 PACIFIC NW LAB, KNOWLEDGE BASED SYST GRP, RICHLAND, WA 99352 USA. RP LAUFMANN, SC (reprint author), US W ADV TECHNOL, ADV KNOWLEDGE SYST RES GRP, 6200 S QUEBEC ST, ST ENGLEWOOD, CO 80111 USA. NR 17 TC 7 Z9 7 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0885-9000 J9 IEEE EXPERT JI IEEE Expert-Intell. Syst. Appl. PD DEC PY 1990 VL 5 IS 6 BP 43 EP 62 DI 10.1109/64.63188 PG 20 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA EM805 UT WOS:A1990EM80500006 ER PT J AU WATKINS, DE SCOTT, AM RIDLEY, KD AF WATKINS, DE SCOTT, AM RIDLEY, KD TI DETERMINATION OF THE THRESHOLD FOR INSTABILITY IN 4-WAVE-MIXING MEDIATED BY BRILLOUIN-SCATTERING SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID PHASE CONJUGATION AB The threshold for instability in Brillouin-enhanced four-wave mixing has been experimentally determined as a function of both the phase mismatch and the ratio of the pump beam intensities, and is shown to agree with theoretical modeling. The effective input noise intensity for four-wave mixing in the unstable regime is compared to the noise in a stimulated Brillouin scattering amplifier and is found to be higher by a factor of three in the forward direction. Competition between two input signals has been investigated and it is shown that the signal which arrives first dominates the interaction in the unstable regime. C1 ROYAL SIGNALS & RADAR ESTAB,MALVERN WR14 3PS,WORCS,ENGLAND. RP WATKINS, DE (reprint author), UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545, USA. NR 20 TC 5 Z9 5 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD DEC PY 1990 VL 26 IS 12 BP 2130 EP 2137 DI 10.1109/3.64348 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA EY439 UT WOS:A1990EY43900013 ER PT J AU RILEY, DJ TURNER, CD AF RILEY, DJ TURNER, CD TI HYBRID THIN-SLOT ALGORITHM FOR THE ANALYSIS OF NARROW APERTURES IN FINITE-DIFFERENCE TIME-DOMAIN CALCULATIONS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Article AB A technique to incorporate a "half-space" aperture integral equation into a finite-difference time-domain (FDTD) code based on the offset Yee mesh is presented. To introduce the technique, linear apertures that are electrically narrow both in width and depth are discussed. The method incorporates as independent time-marching solution for the aperture problem into the FDTD code, and therefore the aperture formally does not exist within the main FDTD mesh. A feedback scheme is introduced so that full exterior and interior coupling is included in the aperture solution. The technique is particularly useful for the analysis of apertures that are narrow both in width and depth with regard to the FDTD spatial cell. Previous thin-slot methods are shown to significantly underestimate the transverse gap electric field for this case, and an explanation for this is provided with the aid of the hybrid algorithm. RP RILEY, DJ (reprint author), SANDIA NATL LABS,DIV RADIAT & ELECTROMAGNET ANAL,ALBUQUERQUE,NM 87185, USA. NR 11 TC 32 Z9 35 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD DEC PY 1990 VL 38 IS 12 BP 1943 EP 1950 DI 10.1109/8.60983 PG 8 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA EP390 UT WOS:A1990EP39000006 ER PT J AU FREAR, DR AF FREAR, DR TI MICROSTRUCTURAL EVOLUTION DURING THERMOMECHANICAL FATIGUE OF 62SN-36PB-2AG AND 60SN-40PB SOLDER JOINTS SO IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY LA English DT Article; Proceedings Paper CT 40TH ELECTRONIC COMPONENTS AND TECHNOLOGY CONF CY MAY 21-23, 1990 CL LAS VEGAS, NV RP FREAR, DR (reprint author), SANDIA NATL LABS,TECH STAFF,DIV 1832,ALBUQUERQUE,NM 87185, USA. NR 21 TC 35 Z9 35 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0148-6411 J9 IEEE T COMPON HYBR PD DEC PY 1990 VL 13 IS 4 BP 718 EP 726 DI 10.1109/33.62585 PG 9 WC Engineering, Manufacturing; Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA EK138 UT WOS:A1990EK13800019 ER PT J AU ZUTAVERN, FJ LOUBRIEL, GM OMALLEY, MW SHANWALD, LP HELGESON, WD MCLAUGHLIN, DL MCKENZIE, BB AF ZUTAVERN, FJ LOUBRIEL, GM OMALLEY, MW SHANWALD, LP HELGESON, WD MCLAUGHLIN, DL MCKENZIE, BB TI PHOTOCONDUCTIVE SEMICONDUCTOR SWITCH EXPERIMENTS FOR PULSED POWER APPLICATIONS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article RP ZUTAVERN, FJ (reprint author), SANDIA NATL LABS,TECH STAFF,ALBUQUERQUE,NM 87185, USA. NR 15 TC 42 Z9 43 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD DEC PY 1990 VL 37 IS 12 BP 2472 EP 2477 DI 10.1109/16.64520 PN 1 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA EK994 UT WOS:A1990EK99400007 ER PT J AU POCHA, MD DRUCE, RL AF POCHA, MD DRUCE, RL TI 35-KV GAAS SUBNANOSECOND PHOTOCONDUCTIVE SWITCHES SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article RP POCHA, MD (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DIV ENGN RES,OPT & ELECTR DEVICES GRP,LIVERMORE,CA 94550, USA. NR 11 TC 31 Z9 33 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD DEC PY 1990 VL 37 IS 12 BP 2486 EP 2492 DI 10.1109/16.64522 PN 1 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA EK994 UT WOS:A1990EK99400009 ER PT J AU WHITE, WT DEASE, CG POCHA, MD KHANAKA, GH AF WHITE, WT DEASE, CG POCHA, MD KHANAKA, GH TI MODELING GAAS HIGH-VOLTAGE, SUBNANOSECOND PHOTOCONDUCTIVE SWITCHES IN ONE SPATIAL DIMENSION SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article RP WHITE, WT (reprint author), UNIV CALIF LAWRENCE LIVERMORE NATL LAB,POB 808,L-156,LIVERMORE,CA 94550, USA. NR 17 TC 26 Z9 28 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD DEC PY 1990 VL 37 IS 12 BP 2532 EP 2541 DI 10.1109/16.64530 PN 1 PG 10 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA EK994 UT WOS:A1990EK99400017 ER PT J AU HINRICHS, CH MACKIE, WA PINCOSY, PA POULSEN, P AF HINRICHS, CH MACKIE, WA PINCOSY, PA POULSEN, P TI THE EXTENDED SCHOTTKY CATHODE SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article; Proceedings Paper CT 7TH TRI-SERVICE CATHODE WORKSHOP CY APR 03-05, 1990 CL NASA, LEWIS RES CTR, CLEVELAND, OH SP NASA HO NASA, LEWIS RES CTR C1 UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP HINRICHS, CH (reprint author), LINFIELD COLL,LINFIELD RES INST,DEPT PHYS,MCMINNVILLE,OR 97128, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD DEC PY 1990 VL 37 IS 12 BP 2575 EP 2580 DI 10.1109/16.64535 PN 2 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA EK995 UT WOS:A1990EK99500005 ER PT J AU LU, E BRONNER, G AF LU, E BRONNER, G TI COMPUTER-AIDED METHODS OF DETERMINING THYRISTOR THERMAL TRANSIENTS SO IEEE TRANSACTIONS ON ENERGY CONVERSION LA English DT Article RP LU, E (reprint author), PRINCETON UNIV,PRINCETON PLASMA PHYS LAB,DIV ENGN ANAL,PRINCETON,NJ 08543, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8969 J9 IEEE T ENERGY CONVER JI IEEE Trans. Energy Convers. PD DEC PY 1990 VL 5 IS 4 BP 616 EP 623 DI 10.1109/60.63130 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA EG425 UT WOS:A1990EG42500002 ER PT J AU RUPPEL, FR AF RUPPEL, FR TI MODELING A SELF-CALIBRATING THERMOCOUPLE FOR USE IN A SMART TEMPERATURE-MEASUREMENT SYSTEM SO IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT LA English DT Article RP RUPPEL, FR (reprint author), OAK RIDGE NATL LAB,DIV INSTRUMENTAT & CONTROLS,OAK RIDGE,TN 37831, USA. NR 8 TC 3 Z9 3 U1 1 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9456 J9 IEEE T INSTRUM MEAS JI IEEE Trans. Instrum. Meas. PD DEC PY 1990 VL 39 IS 6 BP 898 EP 901 DI 10.1109/19.65793 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA EM731 UT WOS:A1990EM73100019 ER PT J AU FLEETWOOD, DM AF FLEETWOOD, DM TI 1990 IEEE ANNUAL CONFERENCE ON NUCLEAR AND SPACE RADIATION EFFECTS - RENO, NEVADA, JULY 16-20, 1990 - EDITORIAL COMMENTS SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Editorial Material RP FLEETWOOD, DM (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1990 VL 37 IS 6 BP 1618 EP 1618 PN 1 PG 1 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA EM492 UT WOS:A1990EM49200002 ER EF