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Search: Author = S.Hama

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2009CO17      Phys.Rev. C 80, 034605 (2009)

E.D.Cooper, S.Hama, B.C.Clark

Global Dirac optical potential from helium to lead

NUCLEAR REACTIONS 4He, 12C, 16O, 28Si, 40Ca, 58Ni, 90Zr, 116Sn, 144Sm, 208Pb(p, p), E=20-1040 MeV; analyzed σ, σ(θ), analyzing powers using optical-model parametrization.

doi: 10.1103/PhysRevC.80.034605
Citations: PlumX Metrics


2006CL02      Phys.Rev. C 73, 024608 (2006)

B.C.Clark, E.D.Cooper, S.Hama

Global Dirac phenomenology for proton elastic scattering from 4He

NUCLEAR REACTIONS 4He(p, p), E=156-1728 MeV; analyzed σ(θ), Ay(θ); deduced optical potential parameters.

doi: 10.1103/PhysRevC.73.024608
Citations: PlumX Metrics


2005DE32      Phys.Rev. C 72, 014608 (2005)

P.K.Deb, B.C.Clark, S.Hama, K.Amos, S.Karataglidis, E.D.Cooper

Comparison of optical model results from a microscopic Schrodinger approach to nucleon-nucleus elastic scattering with those from a global Dirac phenomenology

NUCLEAR REACTIONS 12C, 16O, 40Ca, 90Zr, 208Pb(p, p), E=65, 200 MeV; calculated σ(θ), Ay(θ), other spin observables. 12C, 16O, 40Ca, 90Zr, 208Pb(p, X), (n, X), E=20-800 MeV; calculated total, reaction σ. Comparison of Dirac and Schrodinger approaches, comparison with data.

doi: 10.1103/PhysRevC.72.014608
Citations: PlumX Metrics


2003CL03      Phys.Rev. C 67, 054605 (2003)

B.C.Clark, L.J.Kerr, S.Hama

Neutron densities from a global analysis of medium-energy proton-nucleus elastic scattering

NUCLEAR REACTIONS 40,48Ca, 208Pb(p, p), E=500-1040 MeV; analyzed σ(θ), Ay(θ). 40,48Ca, 208Pb deduced neutron densities, radii. Comparison with model predictions.

doi: 10.1103/PhysRevC.67.054605
Citations: PlumX Metrics


2000KU08      Prog.Theor.Phys.(Kyoto) 103, 321 (2000)

L.Kurth Kerr, B.C.Clark, S.Hama, L.Ray, G.W.Hoffmann

Theoretical and Experimental K+ + Nucleus Total and Reaction Cross Sections from the KDP-RIA Model

NUCLEAR REACTIONS 6Li, 12C, 28Si, 40Ca(K+, X), E at 450-750 MeV/c; calculated total, reaction σ. 12C(K+, K+), E at 715 MeV/c; calculated σ(θ). Kemmer-Duffin-Petiau equation, relativistic impulse approximation. Comparisons with data.


1999IN01      Nucl.Phys. A653, 341 (1999)

A.Ingemarsson, J.Nyberg, P.U.Renberg, O.Sundberg, R.F.Carlson, A.Auce, R.Johansson, G.Tibell, B.C.Clark, L.Kurth Kerr, S.Hama

Reaction Cross Sections for 65 MeV Protons on Targets from 9Be to 208Pb

NUCLEAR REACTIONS 9Be, 12C, 16O, 28Si, 40Ca, 58,60Ni, 112,116,118,120,124Sn, 208Pb(p, X), E=65.5 MeV; measured reaction σ. Comparison with optical model predictions.

doi: 10.1016/S0375-9474(99)00236-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0174.


1998CL04      Phys.Lett. 427B, 231 (1998); Erratum Phys.Lett. 486B, 272 (2000)

B.C.Clark, R.J.Furnstahl, L.Kurth Kerr, J.Rusnak, S.Hama

Pion-Nucleus Scattering at Medium Energies with Densities from Chiral Effective Field Theories

NUCLEAR REACTIONS 208Pb(π+, π+), (π-, π-), E at 790 MeV/c; calculated σ(θ). Relativistic point-coupling models, mean-field meson models. Comparison with data.

doi: 10.1016/S0370-2693(98)00352-9
Citations: PlumX Metrics


1997KA22      Phys.Rev. C55, 2533 (1997)

G.Kahrimanis, G.Burleson, C.M.Chen, B.C.Clark, K.Dhuga, D.J.Ernst, J.A.Faucett, H.T.Fortune, S.Hama, A.Hussein, M.F.Jiang, K.W.Johnson, L.Kurth Kerr, S.Mathews, J.McGill, C.F.Moore, S.Mordechai, C.L.Morris, J.O'Donnell, M.Snell, M.Rawool-Sullivan, L.Ray, C.Whitley, A.L.Williams

Pion-Nucleus Elastic Scattering on 12C, 40Ca, 90Zr, and 208Pb at 400 and 500 MeV

NUCLEAR REACTIONS 12C, 40Ca, 208Pb(π+, π+), (π-, π-), E=400, 500 MeV; 90Zr(π+, π+), E=400, 500 MeV; 90Zr(π-, π-), E=400 MeV; measured σ(θ). 208Pb(π+, π+), (π-, π-), E=662.7 MeV; 40Ca(π+, π+), (π-, π-), 12C(π+, π+), E=672.5 MeV; 12C(π-, π-), E=672.5, 486.2 MeV; analyzed σ(θ). Impulse approximation approach.

doi: 10.1103/PhysRevC.55.2533
Citations: PlumX Metrics


1996HO08      Phys.Rev. C53, 1974 (1996)

G.W.Hoffmann, L.Ray, D.Read, S.Worm, M.L.Barlett, A.A.Green, B.Storm, B.C.Clark, S.Hama, R.L.Mercer

Measurement of the Polarization Transfer Parameter D(NN) for 12,13C(p(pol), p(pol)) at 500 MeV

NUCLEAR REACTIONS 12,13C(polarized p, p), E=500 MeV; measured polarization transfer parameter D(NN). Non-relativistic DWBA analysis, coupled-channels Dirac, relativistic DWBA analyses.

doi: 10.1103/PhysRevC.53.1974
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0434.


1996MI13      Phys.Lett. 382B, 29 (1996)

R.Michael, M.B.Barakat, S.Bart, R.E.Chrien, B.C.Clark, D.J.Ernst, S.Hama, K.H.Hicks, W.Hinton, E.V.Hungerford, M.G.Jiang, T.Kishimoto, C.M.Kormanyos, L.J.Kurth, L.Lee, B.Mayes, R.J.Peterson, L.Pinsky, R.Sawafta, R.Sutter, L.Tang, J.E.Wise

K+ Elastic Scattering from C and 6Li at 715 MeV/c

NUCLEAR REACTIONS 12C, 6Li(K+, K+), E at 715 MeV/c; measured σ(θ). Parameter-free impluse approximation.

doi: 10.1016/0370-2693(96)00664-8
Citations: PlumX Metrics


1995KU11      Nucl.Phys. A585, 335c (1995)

L.J.Kurth, B.C.Clark, E.D.Cooper, S.Hama, R.L.Mercer, L.Ray, G.W.Hoffmann

Meson-Nucleus Scattering in the KDP Formalism

NUCLEAR REACTIONS 12C(K+, K+), E at 800, 715 MeV/c; calculated σ(θ). Kemmer-Duffin-Petiau equation, relativistic impulse approximation.

doi: 10.1016/0375-9474(94)00594-D
Citations: PlumX Metrics


1994KU05      Phys.Rev. C49, 2086 (1994)

L.Kurth, B.C.Clark, E.D.Cooper, S.Hama, S.Shim, R.L.Mercer, L.Ray, G.W.Hoffmann

Dirac Coupled Channel Calculations for Proton Inelastic Scattering from Spherically Symmetric Nuclei for Projectile Energies of 362, 500, and 800 MeV

NUCLEAR REACTIONS 40Ca, 90Zr, 208Pb(polarized p, p'), (polarized p, p), E=362, 500, 800 MeV; analyzed σ(θ), analyzing power, other polarization data; deduced model parameters. 40Ca, 90Zr, 208Pb levels deduced deformation lengths, parameters. Phenomenological, relativistic impulse approximation optical potentials.

doi: 10.1103/PhysRevC.49.2086
Citations: PlumX Metrics


1994KU23      Phys.Rev. C50, 2624 (1994)

L.J.Kurth, B.C.Clark, E.D.Cooper, S.Hama, R.L.Mercer, L.Ray, G.W.Hoffmann

Relativistic Impulse Approximation Treatment of the Elastic Scattering of 400 MeV π± on 28Si

NUCLEAR REACTIONS 28Si(π+, π+), (π-, π-), E=400 MeV; calculated σ(θ). Relativistic impulse approximation, Kemmer-Duffin-Petiau formalism.

doi: 10.1103/PhysRevC.50.2624
Citations: PlumX Metrics


1993CO02      Phys.Rev. C47, 297 (1993)

E.D.Cooper, S.Hama, B.C.Clark, R.L.Mercer

Global Dirac Phenomenology for Proton-Nucleus Elastic Scattering

NUCLEAR REACTIONS 28Si(polarized p, p), E=179 MeV; 12C(polarized p, p), E=494 MeV; calculated σ(θ), analyzing power, polarization observables vs θ. 12C, 16O, 40Ca, 90Zr, 208Pb(p, X), E ≤ 1 GeV; 12C, 16O, 40Ca, 90Zr, 208Pb(n, X), E < 500 MeV; analyzed σ(E); deduced global Dirac optical model parameters, characteristic features.

doi: 10.1103/PhysRevC.47.297
Citations: PlumX Metrics


1992SH01      Phys.Rev. C45, 382 (1992)

S.Shim, B.C.Clark, E.D.Cooper, S.Hama, R.L.Mercer

Relativistic Optical Model Analysis of 180 MeV (p(pol)) + 12C Elastic and Inelastic Scattering

NUCLEAR REACTIONS 12C(polarized p, p), (polarized p, p'), E=180 MeV; analyzed data. Dirac coupled-channels approach, collective model potentials.

doi: 10.1103/PhysRevC.45.382
Citations: PlumX Metrics


1991MI01      Phys.Rev. C43, 801 (1991)

V.K.Mishra, S.Hama, B.C.Clark, R.E.Kozack, R.L.Mercer, L.Ray

Implications of Various Spin-One Relativistic Wave Equations for Intermediate-Energy Deuteron-Nucleus Scattering

NUCLEAR REACTIONS 58Ni(polarized d, d), E=400 MeV; 40Ca(polarized d, d), E=700 MeV; calculated σ(θ), vector, tensor analyzing power vs θ. Various spin-one relativistic equations.

doi: 10.1103/PhysRevC.43.801
Citations: PlumX Metrics


1990HA20      Phys.Rev. C41, 2737 (1990)

S.Hama, B.C.Clark, E.D.Cooper, H.S.Sherif, R.L.Mercer

Global Dirac Optical Potentials for Elastic Proton Scattering from Heavy Nuclei

NUCLEAR REACTIONS 48,40Ca(polarized p, p), E=65-1040 MeV; 60Ni, 56Fe(polarized p, p), E=65 MeV; 90Zr, 208Pb(polarized p, p), E=65-800 MeV; analyzed σ(θ), polarization observables data; deduced model parameters. Global Dirac optical model.

doi: 10.1103/PhysRevC.41.2737
Citations: PlumX Metrics


1990HO06      Phys.Rev. C41, 1651 (1990)

G.W.Hoffmann, M.L.Barlett, D.Ciskowski, G.Pauletta, M.Purcell, L.Ray, J.F.Amann, J.J.Jarmer, K.W.Jones, S.Pentilla, N.Tanaka, M.M.Gazzaly, J.R.Comfort, B.C.Clark, S.Hama

Cross Sections, Analyzing Powers, and Spin-Rotation-Depolarization Observables for 500 MeV Proton Elastic Scattering from 12C and 13C

NUCLEAR REACTIONS 12,13C(polarized p, p), E=494 MeV; measured σ(θ), analyzing powers, spin rotation depolarization observables; deduced phenomenological Dirac optical potentials. Calculated retativistic impulse approximation optical potentials, observables.

doi: 10.1103/PhysRevC.41.1651
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0140.


1990HO22      Phys.Rev.Lett. 65, 3096 (1990)

G.W.Hoffmann, M.L.Barlett, W.Kielhorn, G.Pauletta, M.Purcell, L.Ray, J.F.Amann, J.J.Jarmer, K.W.Jones, S.Penttila, N.Tanaka, G.Burleson, J.Faucett, M.Gilaini, G.Kyle, L.Stevens, A.M.Mack, D.Mihailidis, T.Averett, J.Comfort, J.Gorgen, J.Tinsley, B.C.Clark, S.Hama, R.L.Mercer

Polarized-Proton Elastic Scattering from Polarized 13C

NUCLEAR REACTIONS 13C(polarized p, p), E=497.5 MeV; measured spin correlation parameter, target analyzing power vs θ. Dynamic nuclear polarization technique, polarized, cooled target, enriched ethylene glycol target.

doi: 10.1103/PhysRevLett.65.3096
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0677.


1990SH26      Phys.Rev. C42, 1592 (1990)

S.Shim, B.C.Clark, E.D.Cooper, S.Hama, R.L.Mercer, L.Ray, J.Raynal, H.S.Sherif

Comparison of Relativistic and Nonrelativistic Approaches to the Collective Model Treatment of p + 40Ca Inelastic Scattering

NUCLEAR REACTIONS 40Ca(polarized p, p), (polarized p, p'), E=497.5 MeV; calculated σ(θ), analyzing power, spin rotation function vs θ. Dirac, Schrodinger coupled-channels formalisms.

doi: 10.1103/PhysRevC.42.1592
Citations: PlumX Metrics


1989KO34      Phys.Rev. C40, 2181 (1989)

R.E.Kozack, B.C.Clark, S.Hama, V.K.Mishra, R.L.Mercer, L.Ray

Spin-One Kemmer-Duffin-Petiau Equations and Intermediate-Energy Deuteron-Nucleus Scattering

NUCLEAR REACTIONS 58Ni(polarized d, d), E=400 MeV; 40Ca(polarized d, d), E=700 MeV; calculated σ(θ), analyzing power vs θ. Phenomenological, microscopic nucleon-nucleus potentials, spin-one Kemmer-Duffin-Petiau equations.

doi: 10.1103/PhysRevC.40.2181
Citations: PlumX Metrics


1988CO09      Phys.Lett. 206B, 588 (1988)

E.D.Cooper, B.C.Clark, S.Hama, R.L.Mercer

Dirac-Global Fits to Calcium Elastic Scattering Data in the Range 21-200 MeV

NUCLEAR REACTIONS 40Ca(p, p), (polarized p, p), E=21-200 MeV; calculated σ(θ), analyzing power vs θ. Global relativistic optical model.

doi: 10.1016/0370-2693(88)90701-0
Citations: PlumX Metrics


1988HA08      Phys.Rev. C37, 1111 (1988)

S.Hama, B.C.Clark, R.E.Kozack, S.Shim, E.D.Cooper, R.L.Mercer, B.D.Serot

Dirac Optical Potentials Constrained by a Dirac-Hartree Approach to Nuclear Structure

NUCLEAR REACTIONS 16O, 48,40Ca, 90Zr, 208Pb(p, p), (polarized p, p), E=800 MeV; calculated σ(θ), polarization observables. Relativistic treatment.

doi: 10.1103/PhysRevC.37.1111
Citations: PlumX Metrics


1988IQ02      Nucl.Phys. A487, 626 (1988)

M.J.Iqbal, J.I.Johansson, S.Hama, H.S.Sherif

Isovector Dirac Optical Potentials and Nucleon Charge Exchange Reactions

NUCLEAR REACTIONS 90Zr(polarized p, n), E=160 MeV; 48Ca(polarized p, n), E=134 MeV; calculated σ(θ), analyzing power. 208Pb(polarized p, n), E=134 MeV; calculated σ(θ), spin rotation parameter vs θ; deduced model parameters. Dirac optical potentials.

doi: 10.1016/0375-9474(88)90030-9
Citations: PlumX Metrics


1988KO12      Phys.Rev. C37, 2898 (1988)

R.E.Kozack, B.C.Clark, S.Hama, V.K.Mishra, G.Kalbermann, R.L.Mercer, L.Ray

Relativistic Deuteron-Nucleus Scattering in the Kemmer-Duffin-Petiau Formalism

NUCLEAR REACTIONS 58Ni(d, d), (polarized d, d), E=400 MeV; measured σ(θ), analyzing power vs θ. Kemmer-Duffin-Petiau equations.

doi: 10.1103/PhysRevC.37.2898
Citations: PlumX Metrics


1988RA08      Phys.Rev. C37, 1169 (1988); Erratum Phys.Rev. C39, 2089 (1989)

L.Ray, G.W.Hoffmann, M.L.Barlett, J.D.Lumpe, B.C.Clark, S.Hama, R.L.Mercer

Relativistic Impulse Approximation Description of Polarized Proton Elastic Scattering from Polarized 13C

NUCLEAR REACTIONS 13C(polarized p, p), E=500 MeV; calculated σ(θ), P(θ), spin observables; deduced target nucleus relativistic effects role. Relativistic dynamics, pseudovector coupling.

doi: 10.1103/PhysRevC.37.1169
Citations: PlumX Metrics


1988SH32      Phys.Rev. C38, 1968 (1988)

S.Shim, B.C.Clark, S.Hama, E.D.Cooper, R.L.Mercer, L.Ray, G.W.Hoffmann

Dirac Coupled Channels Calculation for p + 40Ca Inelastic Scattering using the Relativistic Impulse Approximation

NUCLEAR REACTIONS 40Ca(polarized p, p), (polarized p, p'), E=497.5 MeV; calculated σ(θ), analyzing power vs θ. 40Ca levels deduced deformation lengths. Relativistic impulse approximation.

doi: 10.1103/PhysRevC.38.1968
Citations: PlumX Metrics


1987CO32      Phys.Rev. C36, 2170 (1987)

E.D.Cooper, B.C.Clark, R.Kozack, S.Shim, S.Hama, J.I.Johansson, H.S.Sherif, R.L.Mercer, B.D.Serot

Global Optical Potentials for Elastic p + 40Ca Scattering using the Dirac Equation

NUCLEAR REACTIONS 40Ca(p, p), (polarized p, p), E=400 MeV; calculated σ(θ), analyzing power, spin rotation function vs θ; deduced global model parameters. Relativistic optical model.

doi: 10.1103/PhysRevC.36.2170
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1986MC05      Phys.Rev. C33, 1624 (1986)

R.H.McCamis, T.N.Nasr, J.Birchall, N.E.Davison, W.T.H.van Oers, P.J.T.Verheijen, R.F.Carlson, A.J.Cox, B.C.Clark, E.D.Cooper, S.Hama, R.L.Mercer

Elastic Scattering of Protons from 40,42,44,48Ca from 20 to 50 MeV and Nuclear Matter Radii

NUCLEAR REACTIONS 40,42,44,48Ca(p, p), E=21-48.4 MeV; measured σ(θ); deduced nuclear matter radii. Standard and Dirac optical model analyses.

doi: 10.1103/PhysRevC.33.1624
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC0069.


1986RA05      Phys.Rev.Lett. 56, 2465 (1986)

L.Ray, G.W.Hoffmann, M.L.Barlett, J.J.Jarmer, B.C.Clark, R.E.Kozack, R.L.Mercer, G.R.Burleson, S.Hama

Sensitivity of p(pol) + A(pol) Elastic Spin Observables to Relativistic Aspects of Nuclear Structure

NUCLEAR REACTIONS 13C(polarized p, p), E=500 MeV; calculated σ(θ), polarization, other parameters vs θ; deduced relativistic effects role.

doi: 10.1103/PhysRevLett.56.2465
Citations: PlumX Metrics


1985CL01      Phys.Rev. C31, 694 (1985); Erratum Phys.Rev. C31, 1975 (1985)

B.C.Clark, S.Hama, S.G.Kalbermann, E.D.Cooper, R.L.Mercer

Equivalent Local Dirac Potentials

NUCLEAR REACTIONS 40Ca(p, p), E=200, 497.5 MeV; calculated potential parameters, σ(θ). Dirac equation, equivalent Lorentz scalar, four-vector, tensor potentials.

doi: 10.1103/PhysRevC.31.694
Citations: PlumX Metrics


1985CL03      Phys.Rev.Lett. 55, 592 (1985)

B.C.Clark, S.Hama, G.R.Kalbermann, R.L.Mercer, L.Ray

Relativistic Impulse Approximation for Meson-Nucleus Scattering in the Kemmer-Duffin-Petiau Formalism

NUCLEAR REACTIONS 40Ca(K+, K+), (π+, π+), E at 800 MeV/c; calculated meson-nucleus potentials, σ(θ). Relativistic impulse approximation.

doi: 10.1103/PhysRevLett.55.592
Citations: PlumX Metrics


1984CL05      Phys.Rev. C30, 314 (1984)

B.C.Clark, S.Hama, E.Sugarbaker, M.A.Franey, R.L.Mercer, L.Ray, G.W.Hoffmann, B.D.Serot

Relativistic Description of (p, n) Reactions to the Isobaric Analog State

NUCLEAR REACTIONS 90Zr(polarized p, p), (polarized p, n), E=160, 500 MeV; calculated σ(θ), analyzing power vs θ, spin rotation function vs θ; deduced proton-nucleus optical potential parameters. Lane model, relativistic generalization.

doi: 10.1103/PhysRevC.30.314
Citations: PlumX Metrics


1984CL11      Phys.Rev.Lett. 53, 1423 (1984)

B.C.Clark, S.Hama, J.A.McNeil, R.L.Mercer, L.Ray, B.D.Serot, D.A.Sparrow, K.Stricker-Bauer

Relative Impulse-Approximation Calculation of p(bar)-Nucleus Elastic Scattering

NUCLEAR REACTIONS 12C(p-bar, p-bar), (polarized p-bar, p-bar), E=46.8 MeV; calculated σ(θ), analyzing power, spin rotation parameter vs θ. Relativistic impulse approximation.

doi: 10.1103/PhysRevLett.53.1423
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1983CL04      Phys.Rev.Lett. 50, 1644 (1983)

B.C.Clark, S.Hama, R.L.Mercer, L.Ray, B.D.Serot

Dirac-Equation Impulse Approximation for Intermediate-Energy Nucleon-Nucleus Scattering

NUCLEAR REACTIONS 40Ca, 208Pb(polarized p, p), E=497, 800 MeV; calculated σ(θ), analyzing power, spin rotation parameter vs θ.

doi: 10.1103/PhysRevLett.50.1644
Citations: PlumX Metrics


1983CL05      Phys.Rev. C28, 1421 (1983)

B.C.Clark, S.Hama, R.L.Mercer, L.Ray, G.W.Hoffmann, B.D.Serot

Energy Dependence of the Relativistic Impulse Approximation for Proton-Nucleus Elastic Scattering

NUCLEAR REACTIONS 40Ca(p, p), (polarized p, p), E=181-1040 MeV; calculated σ(θ), analyzing power, spin rotation power vs θ. Relativistic, nonrelativistic impulse approximation.

doi: 10.1103/PhysRevC.28.1421
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