NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = W.E.Ormand Found 82 matches. 2021SO05 Phys.Rev. C 103, 015802 (2021) D.Soltesz, M.A.A.Mamun, A.V.Voinov, Z.Meisel, B.A.Brown, C.R.Brune, S.M.Grimes, H.Hadizadeh, M.Hornish, T.N.Massey, J.E.O'Donnell, W.E.Ormand Determination of the 60Zn level density from neutron evaporation spectra NUCLEAR REACTIONS 58Ni(3He, n), E=10 MeV; measured E(n), I(n) by time-of-flight method using NE213 liquid organic scintillators at Edwards Accelerator Laboratory; deduced differential σ(En) and for σ(Ep), the latter from experimental data in 2007Vo08, and compared to theoretical calculations using TALYS-V1.8. 60Zn; deduced level density for 60Zn as function of excitation energy up to 10 MeV, and compared to global theoretical models, including phenomenological, microscopic, and shell-model based calculations. Relevance to confirmation of Hauser-Feshbach formalism for 59Cu(p, γ)60Zn reaction rate at x-ray burst temperatures.
doi: 10.1103/PhysRevC.103.015802
2020OR04 Phys.Rev. C 102, 014315 (2020) Microscopic calculations of nuclear level densities with the Lanczos method NUCLEAR STRUCTURE 47,48Cr, 72,73Kr, 57Fe, 74,76Ge; calculated Hamiltonian moments, level density, and level spacing, and comparison with experimental data for 57Fe, 74,76Ge, and with other model predictions. 55,57,58,59Fe; calculated level spacings (D1) for L=1 neutron resonances and compared with experimental data. 73,74,75,77Ge; calculated level spacings (D0) for L=0 neutron resonances and compared with experimental data. 57Fe, 74,76Ge; calculated angular momenta probabilities. 74,76Ge; calculated spin cutoff parameter for positive and negative parity states. New method for calculating the density of states in nuclei using an extrapolated form of the tridiagonal matrix obtained from the Lanczos method (ELM).
doi: 10.1103/PhysRevC.102.014315
2019KR15 Eur.Phys.J. A 55, 225 (2019) M.K.G.Kruse, W.E.Ormand, C.W.Johnson No-core shell model calculations of the photonuclear cross section of 10B
doi: 10.1140/epja/i2019-12905-1
2017OR02 Phys.Rev. C 96, 024323 (2017) W.E.Ormand, B.A.Brown, M.Hjorth-Jensen Realistic calculations for c coefficients of the isobaric mass multiplet equation in 1p0f shell nuclei NUCLEAR STRUCTURE A=42, 46, 50, 54; calculated c coefficients of the isobaric mass multiplet equation (IMME) for nuclei in A=42 to 54 based on input from three realistic nucleon-nucleon interactions (CD-Bonn, AV18 and N3LO); deduced dependence on the short-range charge-symmetry-breaking (CSB) part of the strong interaction, disagreement in the CSB part between the commonly used CD-Bonn, chiral effective field theory at next-to-next-to-next-to-leading-order, and Argonne V18 nucleon-nucleon interactions, and CSB contribution to the c coefficient from all three interactions too large as compared to the experimental data.
doi: 10.1103/PhysRevC.96.024323
2013JU01 Phys.Rev. C 87, 054312 (2013) E.D.Jurgenson, P.Maris, R.J.Furnstahl, P.Navratil, W.E.Ormand, J.P.Vary Structure of p-shell nuclei using three-nucleon interactions evolved with the similarity renormalization group NUCLEAR STRUCTURE 3H, 4He, 7Li, 8Be, 10B, 12C; calculated ground-state and low-lying levels, J, π. 7Li, 7Be, 10B; calculated magnetic dipole moments of ground states and low-lying states. No-core full configuration (NCFC) and similarity renormalization group (SRG) ab initio calculations for p-shell nuclei. Assessment of convergence properties, extrapolation techniques, and dependence of energies, including four-body contributions. Comparison with experimental data.
doi: 10.1103/PhysRevC.87.054312
2013KR03 Phys.Rev. C 87, 044301 (2013) M.K.G.Kruse, E.D.Jurgenson, P.Navratil, B.R.Barrett, W.E.Ormand Extrapolation uncertainties in the importance-truncated no-core shell model NUCLEAR STRUCTURE 6Li; calculated distribution of ground-state energies, and other parameters. Importance-truncated no-core shell model (IT-NCSM), and NCSM calculations.
doi: 10.1103/PhysRevC.87.044301
2012VO01 Phys.Rev. C 85, 024608 (2012) R.Vogt, J.Randrup, D.A.Brown, M.A.Descalle, W.E.Ormand Event-by-event evaluation of the prompt fission neutron spectrum from 239Pu(n, f) NUCLEAR REACTIONS 239Pu(n, F), E<20 MeV; analyzed chance fission probability, probability for pre-equilibrium neutron emission, fragment mass yields, total and average fragment kinetic energies, neutron multiplicity, prompt neutron spectra, neutron-neutron correlation coefficient contour plots. Event-by-event fission model FREYA with multichance fission and pre-equilibrium neutron emission. Comparison with ENDF-B/VII.0 evaluation.
doi: 10.1103/PhysRevC.85.024608
2011MA35 Phys.Rev.Lett. 106, 202502 (2011) P.Maris, J.P.Vary, P.Navratil, W.E.Ormand, H.Nam, D.J.Dean Origin of the Anomalous Long Lifetime of 14C NUCLEAR STRUCTURE 14C, 14N; calculated rms radii, quadrupole moment, dipole moment, B(M1), β-decay matrix elements. deduced long lifetime for 14C. Ab initio no-core shell model calculations.
doi: 10.1103/PhysRevLett.106.202502
2008OR01 Eur.Phys.J. Special Topics 156, 13 (2008) Microscopic approaches to nuclear structure: Configuration interaction
doi: 10.1140\epjst/e2008-00607-1
2007CH40 Phys.Rev. C 75, 054305 (2007); Publisher's note Phys. Rev. C 75, 059904 (2007) C.J.Chiara, M.Devlin, E.Ideguchi, D.R.LaFosse, F.Lerma, W.Reviol, S.K.Ryu, D.G.Sarantites, O.L.Pechenaya, C.Baktash, A.Galindo-Uribarri, M.P.Carpenter, R.V.F.Janssens, T.Lauritsen, C.J.Lister, P.Reiter, D.Seweryniak, P.Fallon, A.Gorgen, A.O.Macchiavelli, D.Rudolph, G.Stoitcheva, W.E.Ormand Probing sd-fp cross-shell interactions via terminating configurations in 42, 43Sc NUCLEAR REACTIONS 28Si(20Ne, X)42Sc, 28Si(20Ne, X)43Sc, E=84 MeV; 24Mg(24Mg, X)42,43Sc, E=94 MeV; measured Eγ, Iγ, γγ-, (charged-particle)γ- coinc, angular distributions using the Gammasphere. Deduced level energies, J, π, high-spin and high-energy extension of level scheme.
doi: 10.1103/PhysRevC.75.054305
2007NA16 Phys.Rev.Lett. 99, 042501 (2007) P.Navratil, V.G.Gueorguiev, J.P.Vary, W.E.Ormand, A.Nogga Structure of A=10-13 Nuclei with Two- Plus Three-Nucleon Interactions from Chiral Effective Field Theory NUCLEAR STRUCTURE 4He, 6Li, 10,11B, 12,13C; calculated level energies, B(E2), B(M1), B(GT) using effective field theory.
doi: 10.1103/PhysRevLett.99.042501
2007ZG01 Acta Phys.Pol. B38, 1179 (2007) E.F.Zganjar, T.Achtzehn, D.Albers, C.Andreoiu, A.N.Andreyev, R.A.E.Austin, G.C.Ball, J.A.Behr, G.C.Biosvert, P.Bricault, S.Bishop, R.S.Chakrawarthy, R.Churchman, D.Cross, E.Cunningham, J.M.D'Auria, M.Dombsky, P.Finlay, P.E.Garrett, G.F.Grinyer, G.Hackman, V.Hanemaayer, J.C.Hardy, D.F.Hodgson, B.Hyland, V.Iacob, P.Klages, K.A.Koopmans, W.D.Kulp, J.Lassen, J.P.Lavoie, J.R.Leslie, T.Linder, J.A.Macdonald, H.-B.Mak, D.Melconian, A.C.Morton, W.E.Ormand, C.J.Osborne, C.J.Pearson, M.R.Pearson, A.A.Phillips, A.Piechaczek, J.Ressler, F.Sarazin, G.Savard, M.A.Schumaker, H.C.Scraggs, C.E.Svensson, J.J.Valiente-Dobon, I.S.Towner, J.C.Waddington, P.M.Walker, K.Wendt, J.L.Wood Superallowed Beta Decay Studies at TRIUMF - Nuclear Structure and Fundamental Symmetries
2005FO01 Phys.Rev. C 71, 044312 (2005) C.Forssen, P.Navratil, W.E.Ormand, E.Caurier Large basis ab initio shell model investigation of 9Be and 11Be NUCLEAR STRUCTURE 9,11Be; calculated levels, J, π, configurations, radii, B(E1), B(E2), B(M1). 11B, 13C; calculated levels, J, π. No-core shell model, realistic NN interactions, comparisons with data.
doi: 10.1103/PhysRevC.71.044312
2005GR07 Phys.Rev. C 71, 044309 (2005) G.F.Grinyer, C.E.Svensson, C.Andreoiu, A.N.Andreyev, R.A.E.Austin, G.C.Ball, R.S.Chakrawarthy, P.Finlay, P.E.Garrett, G.Hackman, J.C.Hardy, B.Hyland, V.E.Iacob, K.A.Koopmans, W.D.Kulp, J.R.Leslie, J.A.Macdonald, A.C.Morton, W.E.Ormand, C.J.Osborne, C.J.Pearson, A.A.Phillips, F.Sarazin, M.A.Schumaker, H.C.Scraggs, J.Schwarzenberg, M.B.Smith, J.J.Valiente-Dobon, J.C.Waddington, J.L.Wood, E.F.Zganjar High precision measurements of 26Na β- decay RADIOACTIVITY 26Na(β-) [from Si, Ta(p, X)]; measured Eγ, Iγ, T1/2; deduced log ft. 26Mg deduced levels, J, π, β-feeding intensities.
doi: 10.1103/PhysRevC.71.044309
2005NA41 Eur.Phys.J. A 25, Supplement 1, 481 (2005) P.Navratil, W.E.Ormand, C.Forssen, E.Caurier Ab initio no-core shell model calculations using realistic two- and three-body interactions NUCLEAR STRUCTURE 4He, 11Be, 10B, 13C; calculated ground and excited states energies. No-core shell model.
doi: 10.1140/epjad/i2005-06-145-6
2005OR01 Int.J.Mod.Phys. E14, 67 (2005) Nuclear physics with statistics NUCLEAR STRUCTURE 22Na, 24Mg, 34Cl, 44Ti; calculated binding energies. 22Na, 24Mg; calculated level densities. Shell model, Lanczos diagonalization procedure.
doi: 10.1142/S0218301305002783
2005VA32 Eur.Phys.J. A 25, Supplement 1, 475 (2005) J.P.Vary, O.V.Atramentov, B.R.Barrett, M.Hasan, A.C.Hayes, R.Lloyd, A.I.Mazur, P.Navratil, A.G.Negoita, A.Nogga, W.E.Ormand, S.Popescu, B.Shehadeh, A.M.Shirokov, J.R.Spence, I.Stetcu, S.Stoica, T.A.Weber, S.A.Zaytsev Ab initio No-Core Shell Model -- Recent results and future prospects NUCLEAR STRUCTURE 4He; calculated radius. 6Li, 16O, 48Ar, 48K, 48Ca, 48Sc, 48Ti, 48V, 48Cr, 48Mn; calculated ground-state energies. 16O, 47Ca; calculated excited states energies. No-core shell model.
doi: 10.1140/epjad/i2005-06-214-x
2004BB09 Nucl.Phys. A746, 579c (2004) B.R.Barrett, P.Navratil, A.Nogga, W.E.Ormand, J.P.Vary No-core shell-model calculations in light nuclei with three-nucleon forces NUCLEAR STRUCTURE 6,7Li, 10B; calculated levels, J, π, three-nucleon force effects. No-core shell model.
doi: 10.1016/j.nuclphysa.2004.09.137
2004VA29 Nucl.Phys. A746, 123c (2004) J.P.Vary, B.R.Barrett, R.Lloyd, P.Navratil, A.Nogga, W.E.Ormand Shell model in a first principles approach NUCLEAR STRUCTURE 12C, 16O; calculated levels, J, π. No-core shell model, comparison with data.
doi: 10.1016/j.nuclphysa.2004.09.146
2003KU02 Phys.Rev.Lett. 90, 042501 (2003) Giant-Dipole Resonance and the Deformation of Hot, Rotating Nuclei NUCLEAR STRUCTURE 44Ti, 90Zr, 120Sn, 168Er, 208Pb; calculated deformation vs temperature and angular momentum, correlation between GDR width and quadrupole deformation.
doi: 10.1103/PhysRevLett.90.042501
2003NA21 Phys.Rev. C 68, 034305 (2003) Ab initio shell model with a genuine three-nucleon force for the p-shell nuclei NUCLEAR STRUCTURE 6He, 6,7Li, 7,8,10Be, 10,11,12B, 10,11,12,13C, 12N; calculated levels, J, π, effects of three-nucleon interaction. No-core shell model.
doi: 10.1103/PhysRevC.68.034305
2002BA15 Acta Phys.Pol. B33, 297 (2002) B.R.Barrett, P.Navratil, W.E.Ormand, J.P.Vary Ab initio Large-Basis No-Core Shell Model and Its Application to Light Nuclei NUCLEAR STRUCTURE 3H, 3,4He; calculated ground-state energies. 6Li, 6He, 12C; calculated levels, J, π. No-core shell model, several potentials compared, comparisons with data.
2002BE08 Phys.Rev. C65, 021601 (2002) L.A.Bernstein, J.A.Becker, P.E.Garrett, W.Younes, D.P.McNabb, D.E.Archer, C.A.McGrath, H.Chen, W.E.Ormand, M.A.Stoyer, R.O.Nelson, M.B.Chadwick, G.D.Johns, W.S.Wilburn, M.Devlin, D.M.Drake, P.G.Young 239Pu(n, 2n)238Pu Cross Section Deduced using a Combination of Experiment and Theory NUCLEAR REACTIONS 239Pu(n, 2n), E < 20 MeV; measured Eγ, Iγ, partial γ-ray σ; deduced σ, possible nuclear structure effects. Comparisons with model predictions. Geanie array.
doi: 10.1103/PhysRevC.65.021601
2002CA43 Phys.Rev. C66, 024314 (2002) E.Caurier, P.Navratil, W.E.Ormand, J.P.Vary Ab initio shell model for A=10 nuclei NUCLEAR STRUCTURE 10Li, 10Be, 10B, 10C; calculated ground and excited states energies, J, π, transition strengths. No-core shell model.
doi: 10.1103/PhysRevC.66.024314
2002GU05 Phys.Rev. C65, 024314 (2002) V.G.Gueorguiev, W.E.Ormand, C.W.Johnson, J.P.Draayer Mixed-Mode Shell-Model Theory for Nuclear Structure Studies NUCLEAR STRUCTURE 24Mg; calculated binding energy, level energies. Mixed-mode shell model approach.
doi: 10.1103/PhysRevC.65.024314
2002NA08 Phys.Rev.Lett. 88, 152502 (2002) Ab Initio Shell Model Calculations with Three-Body Effective Interactions for p-Shell Nuclei NUCLEAR STRUCTURE 6Li, 8Be, 10B; calculated ground and excited states energies. No-core shell model, three-body interactions.
doi: 10.1103/PhysRevLett.88.152502
2001CA50 Phys.Rev. C64, 051301 (2001) E.Caurier, P.Navratil, W.E.Ormand, J.P.Vary Intruder States in 8Be NUCLEAR STRUCTURE 8Be; calculated levels, J, π; deduced intruder states features. 8He, 8Li, 8Be, 8B; calculated binding energies. Large-basis shell model.
doi: 10.1103/PhysRevC.64.051301
2001GA53 Phys.Rev.Lett. 87, 132502 (2001) P.E.Garrett, W.E.Ormand, D.Appelbe, R.W.Bauer, J.A.Becker, L.A.Bernstein, J.A.Cameron, M.P.Carpenter, R.V.F.Janssens, C.J.Lister, D.Seweryniak, E.Tavukcu, D.D.Warner Observation of 46Cr and Testing the Isobaric Multiplet Mass Equation at High Spin NUCLEAR REACTIONS 12C(36Ar, 2n), E=105 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin. 46Cr deduced high-spin levels, J, π. Comparisons with neighboring nuclides, one- and two-body contributions to isovector energy differences discussed. Gammasphere array, fragment mass analyzer.
doi: 10.1103/PhysRevLett.87.132502
2001KU10 Nucl.Phys. A687, 212c (2001) D.Kusnezov, Y.Alhassid, K.A.Snover, W.E.Ormand Giant Dipole Resonances in Hot, Rotating Nuclei: Nuclear shapes and shell corrections NUCLEAR STRUCTURE Sc, Cu, Zr, Mo, Sn, Dy, Pb; calculated GDR width vs temperature and angular momentum. 92,96,100Mo; calculated GDR width as a function of temperature and angular momentum. 44Ti, 90Zr, 120Sn, 168Er, 208Pb; calculated deformation parameters vs temperature and spin for hot rotating nuclei. Shell effects discussed, comparison with data.
doi: 10.1016/S0375-9474(01)00623-6
2001MA77 Acta Phys.Pol. B32, 2433 (2001) A.Maj, M.Kmiecik, W.Krolas, J.Styczen, A.Bracco, F.Camera, B.Million, J.J.Gaardhoje, B.Herskind, M.Kicinska-Habior, J.Kownacki, W.E.Ormand Search for the Jacobi Instability in Rapidly Rotating 46Ti* Nuclei NUCLEAR REACTIONS 28Si(18O, X), E=98 MeV; measured high-energy Eγ, Iγ, angular distributions. 46Ti deduced GDR decay features, Jacobi instability. Thermal shape fluctuation model.
2001NA33 Phys.Rev.Lett. 87, 172502 (2001) P.Navratil, J.P.Vary, W.E.Ormand, B.R.Barrett Six-Nucleon Spectroscopy from a Realistic Nonlocal Hamiltonian NUCLEAR STRUCTURE 3H, 3,4,6He, 6Li; calculated ground-state energies. 6He, 6Li; calculated levels, J, π, B(E2), B(M1). 6He deduced soft dipole mode. No-core shell model, comparisons with data.
doi: 10.1103/PhysRevLett.87.172502
2000KM01 Nucl.Phys. A674, 29 (2000) M.Kmiecik, A.Maj, A.Bracco, F.Camera, M.Casanova, S.Leoni, B.Million, B.Herskind, R.A.Bark, W.E.Ormand The GDR Width in the Excited 147Eu Compound Nucleus at High Angular Momentum NUCLEAR REACTIONS 110Pd(37Cl, xn), E=160, 165, 170 MeV; measured Eγ, Iγ, γ multipolarity. 147Eu deduced GDR width, decay features, deformation parameters. BaF2 and HPGe detectors. Statistical model analysis, thermal shape fluctuations.
doi: 10.1016/S0375-9474(00)00166-4
1999CA25 Phys.Rev. C60, 014306 (1999) F.Camera, A.Bracco, S.Leoni, B.Million, M.Mattiuzzi, M.Pignanelli, A.Maj, M.Kmiecik, R.Bark, I.Bearden, J.J.Gaardhoje, W.E.Ormand, T.Lonnroth, R.Osterbacka Probing the Shape of Hot 194Hg at High Spins with the Giant Dipole Resonance Decay in Selected Cascades NUCLEAR REACTIONS 164Dy(30Si, X), E=142 MeV; measured Eγ, Iγ, γγ-coin. 194Hg deduced GDR width vs angular momentum, no superdeformed effects. Ge, BaF detectors.
doi: 10.1103/PhysRevC.60.014306
1999GE07 Nucl.Phys. A649, 173c (1999) G.Gervais, M.Thoennessen, W.E.Ormand Excitation-Energy Dependent Strength-Function Analysis of Hot GDR Experiments NUCLEAR STRUCTURE 120Sn; calculated spin and temperature dependent GDR strength functions, γ spectra. Statistical model.
doi: 10.1016/S0375-9474(99)00056-1
1999OR03 Phys.Rev.Lett. 82, 1101 (1999) Effects of Isospin-Symmetry Violation on Tests of the Standard Model Using Parity-Violating Electron Scattering NUCLEAR STRUCTURE 12C, 16O, 28Si; calculated isospin-mixing corrections for parity-violating electron scattering.
doi: 10.1103/PhysRevLett.82.1101
1999OR06 Nucl.Phys. A649, 145c (1999) Theoretical Description of the Giant-Dipole Resonance in Hot Nuclei NUCLEAR STRUCTURE 106,120Sn, 176W, 208Pb; calculated GDR width vs temperature, spin. 106Sn calculated Eγ, Iγ(θ) vs spin. Adiabatic model, large amplitude thermal fluctuations. Comparisons with data.
doi: 10.1016/S0375-9474(99)00052-4
1999RI05 Phys.Rev.Lett. 82, 4196 (1999) L.A.Riley, J.K.Jewell, P.D.Cottle, T.Glasmacher, K.W.Kemper, N.Alamanos, Y.Blumenfeld, J.A.Carr, M.J.Chromik, R.W.Ibbotson, F.Marechal, W.E.Ormand, F.Petrovich, H.Scheit, T.Suomijarvi Inverse Kinematics Proton Scattering on 18Ne and Mirror Symmetry in A = 18 Nuclei NUCLEAR REACTIONS 1H(18Ne, p), E=30 MeV/nucleon; measured proton spectra, inelastic σ(θ); deduced mirror symmetry. Comparison with n+18O scattering.
doi: 10.1103/PhysRevLett.82.4196
1998GE07 Phys.Rev. C58, R1377 (1998) G.Gervais, M.Thoennessen, W.E.Ormand Temperature Dependence of the Giant Dipole Resonance in 120Sn NUCLEAR STRUCTURE 120Sn; calculated GDR strength functions, γ-spectra; deduced temperature, spin dependence effects. Statistical model.
doi: 10.1103/PhysRevC.58.R1377
1998KA31 Phys.Rev. C58, 699 (1998) A.Kangasmaki, P.Tikkanen, J.Keinonen, W.E.Ormand, S.Raman, Zs.Fulop, A.Z.Kiss, E.Somorjai Lifetimes of 32S Levels NUCLEAR REACTIONS 2H(31P, n), E=24, 29 MeV; 28Si(6Li, np), E=8, 12 MeV; 31P(p, γ), E=1.0-1.6 MeV; measured Doppler-broadened Eγ, Iγ. 32S levels deduced T1/2, branching ratios, δ, B(E2), B(M1). DSA analysis, Monte Carlo simulations. NUCLEAR STRUCTURE 32S; calculated levels, T1/2, δ. Shell model.
doi: 10.1103/PhysRevC.58.699
1998PA08 Phys.Lett. 422B, 1 (1998) F.Pan, J.P.Draayer, W.E.Ormand A Particle-Number-Conserving Solution to the Generalized Pairing Problem
doi: 10.1016/S0370-2693(98)00034-3
1997AD03 Phys.Lett. 392B, 1 (1997) A.A.Adams, G.E.Mitchell, W.E.Ormand, J.F.Shriner, Jr. Distribution of Shell Model Reduced Transition Probabilities in 22Na NUCLEAR STRUCTURE 22Na; calculated B(λ); deduced chaotic nature related features. Shell model.
doi: 10.1016/S0370-2693(96)01510-9
1997BE09 Phys.Lett. 393B, 285 (1997) P.Bednarczyk, J.Styczen, R.Broda, M.Lach, W.Meczynski, W.Nazarewicz, W.E.Ormand, W.Satula, D.Bazzacco, F.Brandolini, G.de Angelis, S.Lunardi, L.Muller, N.H.Medina, C.M.Petrache, C.Rossi Alvarez, F.Scarlassara, G.F.Segato, C.Signorini, F.Soramel High Spin States in 45Sc and Coexistence of Collective and Non-Collective Structures in the Odd-A f7/2 Nuclei NUCLEAR REACTIONS 30Si(18O, 2np), (18O, 3n), E=60 MeV; measured γ(recoil)-coin. 12C(35Cl, X), E=75-120 MeV; measured DSA. 45Sc deduced high-spin states, J, π, T1/2, B(λ). 43Ca, 45Ti deduced high-spin states.
doi: 10.1016/S0370-2693(96)01635-8
1997KA15 Phys.Rev. C55, 1697 (1997) A.Kangasmaki, P.Tikkanen, J.Keinonen, W.E.Ormand, S.Raman Lifetimes of 32P Levels NUCLEAR REACTIONS 2H(31P, p), E ≈ 24, 29 MeV; measured Eγ, Iγ, DSA. 32P deduced levels, J, π, γ-multipolarity, δ(E2/M1), γ-branching ratio, B(λ). Shell model.
doi: 10.1103/PhysRevC.55.1697
1997MA03 Nucl.Phys. A612, 262 (1997) M.Mattiuzzi, A.Bracco, F.Camera, W.E.Ormand, J.J.Gaardhoje, A.Maj, B.Million, M.Pignanelli, T.Tveter Angular Momentum Dependence of the GDR Width in Sn Nuclei at Fixed Excitation Energy NUCLEAR REACTIONS 48Ti(58Ni, X), E=260 MeV; measured high energy γ(evaporation residue)-coin. 106Sn deduced GDR width angular dependence. Adiabatic model, thermal fluctuations, 176W GDR features analyzed.
doi: 10.1016/S0375-9474(96)00335-1
1997NA17 Phys.Rev. C56, 2542 (1997) P.Navratil, B.R.Barrett, W.E.Ormand Large-Basis Shell-Model Calculation of the 10C → 10B Fermi Matrix Element NUCLEAR STRUCTURE 10B; calculated levels, binding energy, magnetic, quadrupole moments. 10C; calculated binding energy, charge radius; deduced β-decay isospin mixing role. Large basis shell model calculations.
doi: 10.1103/PhysRevC.56.2542
1997OR02 Nucl.Phys. A614, 217 (1997) W.E.Ormand, P.F.Bortignon, R.A.Broglia, A.Bracco Behavior of the Giant-Dipole Resonance in 120Sn and 208Pb at High Excitation Energy NUCLEAR STRUCTURE 208Pb; calculated Nilsson-Strutinsky shell corrections to free energy, moments of inertia, GDR strength function vs temperature, particle evaporation width. 120Sn; calculated GDR strength function vs temperature.
doi: 10.1016/S0375-9474(96)00464-2
1997OR04 Phys.Rev. C55, 2407 (1997) Mapping the Proton Drip Line up to A = 70 NUCLEAR STRUCTURE 46,47,48Mn, 46,47,48,49Fe, 47,48,49,50,51,52Co, 49,50,51,52,53Ni, 49,50,51,52,53,54,55,56Cu, 50,52,53,54,55,56,57Zn, 54,55,56,57,58,59,60,61Ga, 56,57,58,59,60,61,62,63Ge, 58,59,60,61,62,63,64,65As, 62,63,64,65,66,67Se, 65,66,67,68,69Br, 66,67,68,69Kr, 68,70Rb; calculated binding energy, one-, two-proton separation energy, β-decay endpoint energy, Q(EC). 38Ti, 45Fe, 48,49Ni, 55Zn, 59Ge, 63,64Se, 66,67,68,69Kr; calculated di-proton emission T1/2, one-, two-proton separation energies. Coulomb energy difference from shell model.
doi: 10.1103/PhysRevC.55.2407
1997OR05 Nucl.Phys. A618, 20 (1997) W.E.Ormand, P.F.Bortignon, R.A.Broglia Effects of Angular Momentum Projection on the Nuclear Partition Function and the Observation of the Giant-Dipole Resonance in Hot Nuclei NUCLEAR STRUCTURE 106Sn, 208Pb; calculated GDR associated σ(Eγ), a2 coefficients vs Eγ. Different angular momentum projection methods.
doi: 10.1016/S0375-9474(97)00027-4
1997OR07 Acta Phys.Pol. B28, 87 (1997) Shell-Model Studies of Nuclei at the Proton Drip-Line
1997OR08 Phys.Rev. C56, R1678 (1997) Estimating the Nuclear Level Density with the Monte Carlo Shell Model NUCLEAR STRUCTURE 24Mg; calculated levels, level densities; 32S; calculated levels; 26,27,28,29,30,31,32,33,34,35,36O; calculated binding energy; 20Ne; calculated energy, partition function vs inverse temperature. Monte Carlo shell model, universal sd-shell Hamiltonian, comparison with surface-delta interaction model.
doi: 10.1103/PhysRevC.56.R1678
1996OR01 Phys.Rev. C53, 214 (1996) Properties of Proton Drip-Line Nuclei at the sd-fp-Shell Interface NUCLEAR STRUCTURE A=37-48; calculated binding energies, one-, two-proton, β end-point energies, one-, two-proton emission T1/2, β-decay branching ratio vs daughter excitation energy; deduced 38Ti, 45Fe suitability for correlated 2p-emission. Shell model.
doi: 10.1103/PhysRevC.53.214
1996OR03 Nucl.Phys. A599, 57c (1996) W.E.Ormand, P.F.Bortignon, R.A.Broglia The Temperature Dependence of the Width of the Giant-Dipole Resonance NUCLEAR STRUCTURE 208Pb, 120Sn; calculated GDR strength function. Adiabatic model.
doi: 10.1016/0375-9474(96)00047-4
1996OR04 Phys.Rev.Lett. 77, 607 (1996) W.E.Ormand, P.F.Bortignon, R.A.Broglia Temperature Dependence of the Width of the Giant Dipole Resonance in 120Sn and 208Pb NUCLEAR STRUCTURE 120Sn, 208Pb; calculated GDR strength function vs temperature; deduced shell corrections caused mass dependence.
doi: 10.1103/PhysRevLett.77.607
1995EN04 Phys.Rev. C52, 2216 (1995) J.Engel, M.T.Ressell, I.S.Towner, W.E.Ormand Response of Mica to Weakly Interacting Massive Particles
doi: 10.1103/PhysRevC.52.2216
1995OR01 Phys.Lett. 345B, 343 (1995) W.E.Ormand, P.M.Pizzochero, P.F.Bortignon, R.A.Broglia Neutrino Capture Cross Sections for 40Ar and β-Decay of 40Ti NUCLEAR REACTIONS 40Ar(ν, X), E=solar; calculated absorption σ. Shell model. RADIOACTIVITY 40Ti(β+); calculated β-decay matrix elements, T1/2, branching ratios. Shell model.
doi: 10.1016/0370-2693(94)01605-C
1995OR03 Phys.Rev. C52, 2455 (1995) Isospin-Mixing Corrections for fp-Shell Fermi Transitions NUCLEAR STRUCTURE A=10-74; calculated isospin mixing corrections, ft values in some cases. Superallowed Fermi transitions, shell model.
doi: 10.1103/PhysRevC.52.2455
1994AL06 Phys.Rev.Lett. 72, 613 (1994) Y.Alhassid, D.J.Dean, S.E.Koonin, G.Lang, W.E.Ormand Practical Solution to the Monte Carlo Sign Problem: Realistic calculations of 54Fe NUCLEAR STRUCTURE 54Fe; calculated isoscalar, isovector quadrupole, Gamow-Teller transition strengths; deduced Gamow-Teller β+ strength quenching, solution to Monte Carlo sign problem.
doi: 10.1103/PhysRevLett.72.613
1994DE31 Phys.Rev.Lett. 72, 4066 (1994) D.J.Dean, P.B.Radha, K.Langanke, Y.Alhassid, S.E.Koonin, W.E.Ormand Complete 0(h-bar x Omega) Calculations of Gamow-Teller Strengths for Nuclei in the Iron Region NUCLEAR STRUCTURE 56,54Fe, 56,58Ni, 54Cr, 55Mn; calculated B(λ), quadrupole moments, Gamow-Teller transition strength. Shell model, Monte Carlo techniques, different interactions.
doi: 10.1103/PhysRevLett.72.4066
1994OR01 Phys.Rev. C49, 1422 (1994) W.E.Ormand, D.J.Dean, C.W.Johnson, G.H.Lang, S.E.Koonin Demonstration of the Auxiliary-Field Monte Carlo Approach for sd-Shell Nuclei NUCLEAR STRUCTURE 20,22,24,26Ne, 22Na; calculated energy, quadrupole moment, other operators expectation value. 22Ne; calculated response functions; deduced shape features. Auxiliary-field Monte Carlo approach.
doi: 10.1103/PhysRevC.49.1422
1994OR02 Nucl.Phys. A569, 63c (1994) Future Microscopic Developments for the GDR in Hot Nuclei NUCLEAR STRUCTURE 16O, 20Ne; analyzed imaginary-time autocorrelation function for T=1 dipole transition. Auxiliary-field Monte Carlo methods.
doi: 10.1016/0375-9474(94)90096-5
1994OR03 Nucl.Phys. A570, 257c (1994) Monte Carlo Methods for the Shell Model NUCLEAR STRUCTURE 24Mg, 48Cr; calculated Hamiltonian, J2 expectation values vs deformation for thermal, ground states. 22Ne; calculated isoscalar quandrupole response function. Shell model, Monte Carlo procedures.
doi: 10.1016/0375-9474(94)90290-9
1993BO11 Nucl.Phys. A553, 501c (1993) P.F.Bortignon, A.Bracco, F.De Blasio, W.E.Ormand, R.A.Broglia Fluctuations and Critical Temperature in the Study of Collective Motion in Excited Nuclei NUCLEAR STRUCTURE 40Ca, 92Mo; analyzed data; deduced GDR properties.
doi: 10.1016/0375-9474(93)90647-G
1993DE28 Phys.Lett. 317B, 275 (1993) D.J.Dean, S.E.Koonin, G.H.Lang, W.E.Ormand, P.B.Radha Shell Model Monte Carlo Calculations for 170Dy NUCLEAR STRUCTURE 170Dy; calculated various statitic observables, free energy coutours. Shell model Monte Carlo calculations.
doi: 10.1016/0370-2693(93)90995-T
1993LA24 Phys.Rev. C48, 1518 (1993) G.H.Lang, C.W.Johnson, S.E.Koonin, W.E.Ormand Monte Carlo Evaluation of Path Integrals for the Nuclear Shell Model NUCLEAR STRUCTURE 24Mg, 20Ne; calculated <H>, <J2> vs deformation parameter. Shell model, Monte Carlo evaluation of path integrals.
doi: 10.1103/PhysRevC.48.1518
1993OR02 Phys.Lett. 308B, 207 (1993) W.E.Ormand, P.M.Pizzochero, P.F.Bortignon, R.A.Broglia The Solar Neutrino Capture Cross Section for 23Na NUCLEAR REACTIONS 23Na(ν, e-), (ν-bar, e+), E ≈ 3-15 MeV; calculated solar neutrino absorption rate, capture σ vs E. Standard solar model.
doi: 10.1016/0370-2693(93)91272-O
1993VO01 Phys.Rev. C47, 623 (1993) Spin-Isospin SU(4) Symmetry in sd- and fp-Shell Nuclei NUCLEAR STRUCTURE 16O, 20Ne, 24Mg, 28Si, 32S, 36Ar, 19F, 23Na, 27Al, 31P, 35Cl, 39K, 42,44,46,48,50,52,54,56,58Ca; calculated SU(4) overlaps for J(π)=0+, 1+ states. Shell model, Wildenthal interaction.
doi: 10.1103/PhysRevC.47.623
1992JO07 Phys.Rev.Lett. 69, 3157 (1992) C.W.Johnson, S.E.Koonin, G.H.Lang, W.E.Ormand Monte Carlo Methods for the Nuclear Shell Model NUCLEAR STRUCTURE 24Mg, 20Ne, 48Cr; calculated ground state, thermal few body operators expectation values.
doi: 10.1103/PhysRevLett.69.3157
1992OR04 Phys.Rev. C46, 1710 (1992) Spectral Properties of Shell-Model Hamiltonians NUCLEAR STRUCTURE 46V, 26Al; calculated for given J, π level nearest neighbor spacing; deduced eigenvalue spectral properties. Shell model hamiltonian.
doi: 10.1103/PhysRevC.46.1710
1992OR05 Phys.Rev.Lett. 69, 2905 (1992) W.E.Ormand, F.Camera, A.Bracco, A.Maj, P.F.Bortignon, B.Million, R.A.Broglia Evidence for Different Time Scales Controlling Thermal Fluctuations in Hot Nuclei NUCLEAR STRUCTURE 92Mo; analyzed strength function, GDR photoabsorption σ(E), σ(E, θ) a2 coefficient, hot nuclei; deduced thermal fluctuations control of different time scales.
doi: 10.1103/PhysRevLett.69.2905
1990OR02 Phys.Rev.Lett. 64, 2254 (1990) W.E.Ormand, P.F.Bortignon, R.A.Broglia, T.Dossing, B.Lauritzen Time-Dependent Thermal Fluctuations and the Giant Dipole Resonance in Hot, Rotating Nuclei NUCLEAR REACTIONS 110Sn, 166Er(γ, X), E ≈ 10-18 MeV; calculated photoabsorption σ(E); deduced GDR narrowing features. Hot nuclei, thermal fluctuations shape dependence.
doi: 10.1103/PhysRevLett.64.2254
1990OR04 Nucl.Phys. A520, 595c (1990) W.E.Ormand, A.Bracco, P.F.Bortignon, R.A.Broglia Limiting Temperatures for Collective Motion in Nuclei NUCLEAR REACTIONS 70Ge(40Ar, X), E=15-24 MeV/nucleon; measured γ-multiplicity vs E. 110Sn deduced GDR coupling width temperature dependence. Central collisions plus statistical decay model.
doi: 10.1016/0375-9474(90)91177-S
1990OR05 Nucl.Phys. A519, 61c (1990) W.E.Ormand, P.F.Bortignon, R.A.Broglia, T.Dossing, B.Lauritzen Time-Dependent Thermal Fluctuations and the Giant-Dipole Resonance in Hot, Rotating Nuclei NUCLEAR STRUCTURE 110Sn, 166Er; analyzed data; deduced GDR parameters, thermal shape fluctuations role.
doi: 10.1016/0375-9474(90)90615-S
1989OR01 Phys.Rev.Lett. 62, 866 (1989) Corrections to the Fermi Matrix Element for Superallowed β Decay RADIOACTIVITY 14O, 26mAl, 34Cl, 38mK, 42Sc, 46V, 50Mn, 54Co; calculated log ft corrections.
doi: 10.1103/PhysRevLett.62.866
1989OR02 Nucl.Phys. A491, 1 (1989) Empirical Isospin-Nonconserving Hamiltonians for Shell-Model Calculations NUCLEAR STRUCTURE A=9-59; calculated isospin nonconserving Hamiltonian parameters.
doi: 10.1016/0375-9474(89)90203-0
1989OR08 Phys.Rev. C40, 1510 (1989) W.E.Ormand, P.F.Bortignon, A.Bracco, R.A.Broglia Nuclear Level-Density Parameter in Hot Nuclei NUCLEAR STRUCTURE 63Cu, 110Sn, 155Er; calculated level density parameters vs temperature, angular momentum.
doi: 10.1103/PhysRevC.40.1510
1989OR09 Phys.Rev. C40, 2914 (1989) W.E.Ormand, B.A.Brown, B.R.Holstein Limits on the Presence of Scalar and Induced-Scalar Currents in Superallowed β Decay RADIOACTIVITY 16O, 26mAl, 34Cl, 38mK, 42Sc, 46V, 50Mn, 54Co; analyzed β-decay ft values; deduced limits on scalar, induced scalar coupling constants.
doi: 10.1103/PhysRevC.40.2914
1988BR13 Nucl.Phys. A482, 141c (1988) R.A.Broglia, W.E.Ormand, M.Borromeo The Shapes and Hopping Times of Hot Nuclei NUCLEAR STRUCTURE 108Sn; calculated GDR damping width vs temperature. Hot nuclei.
doi: 10.1016/0375-9474(88)90581-7
1988LA10 Phys.Lett. 207B, 238 (1988) B.Lauritzen, R.A.Broglia, W.E.Ormand, T.Dossing Motional Narrowing in the Dampling of Giant Resonances in Hot Nuclei NUCLEAR STRUCTURE 108Sn; calculated GDR strength function vs temperature.
doi: 10.1016/0370-2693(88)90567-9
1988MO18 Phys.Rev. C38, 737 (1988) M.F.Mohar, E.Adamides, W.Benenson, C.Bloch, B.A.Brown, J.Clayton, E.Kashy, M.Lowe, J.A.Nolen, Jr., W.E.Ormand, J.van der Plicht, B.Sherrill, J.Stevenson, J.S.Winfield Mass of 39Sc via the 40Ca(7Li, 8He) Reaction NUCLEAR REACTIONS 40Ca(7Li, 8He), E=27.24 MeV/nucleon; measured σ(E(8He)); deduced Q, mass equation parameters. 39Sc deduced mass excess. Isobaric multiplet mass equation, isospin-nonconserving Hamiltonian.
doi: 10.1103/PhysRevC.38.737
1986OR02 Phys.Lett. 174B, 128 (1986) Isospin-Forbidden Proton and Neutron Emission in 1s-0d Shell Nuclei NUCLEAR STRUCTURE A=21-37; calculated T=3/2 state isospin forbidden nucleon emission decay spectroscopic amplitudes.
doi: 10.1016/0370-2693(86)90726-4
1985OR04 Nucl.Phys. A440, 274 (1985) Calculated Isospin-Mixing Corrections to Fermi β-Decays in 1s0d-Shell Nuclei with Emphasis on A = 34 RADIOACTIVITY 22Mg, 34Cl, 34Ar(β+); calculated superallowed β-decay, Fermi matrix elements.
doi: 10.1016/0375-9474(85)90341-0
1983SH31 Phys.Rev. C28, 1712 (1983) B.Sherrill, K.Beard, W.Benenson, B.A.Brown, E.Kashy, W.E.Ormand, H.Nann, J.J.Kehayias, A.D.Bacher, T.E.Ward Mass of 59Zn NUCLEAR STRUCTURE A=41-59; analyzed Coulomb energy systematics. New data on 59Zn input. RADIOACTIVITY 59Zn(β+); calculated ft. Latest mass measurement input. NUCLEAR REACTIONS 58Ni(p, π-), E=190 MeV; measured σ(E(π)), σ(θ), Q. 40Ca(p, π-), E=190 MeV; measured σ(reaction) upper limit. 59Zn deduced mass.
doi: 10.1103/PhysRevC.28.1712
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