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Search: Author = D.A.Sparrow

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1987SP05      Phys.Rev. C35, 1410 (1987)

D.A.Sparrow

Spin and Isospin Effects in a Relativistic Treatment of p(bar)-Atom Shifts and Widths

NUCLEAR STRUCTURE ¹⁷⁴Yb, ²³²Th, ^16,17,18O; calculated anti-protonic level shifts, widths. Relativistic impulse approximation.

doi: 10.1103/PhysRevC.35.1410
Citations: PlumX Metrics

1986GE06      Phys.Rev. C34, 353 (1986)

W.J.Gerace, W.J.Leonard, D.A.Sparrow

Importance of Quadrupole Coupling for Low Energy Pion Charge Exchange Reactions

NUCLEAR REACTIONS ¹⁴C, ¹⁸O(π⁺, π⁰), (π⁺, π^-), E=50 MeV; calculated σ(θ); deduced reaction σ(E). Coupled-channels approach.

doi: 10.1103/PhysRevC.34.353
Citations: PlumX Metrics

1986GI01      Phys.Rev. C33, 247 (1986)

J.N.Ginocchio, T.Otsuka, R.D.Amado, D.A.Sparrow

Medium Energy Probes and the Interacting Boson Model of Nuclei

NUCLEAR REACTIONS Sm(p, p), (p, p'), E=800 MeV; calculated σ(θ). Glauber approximation plus interacting boson model.

doi: 10.1103/PhysRevC.33.247
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1986MC13      Phys.Rev. C34, 746 (1986)

J.A.McNeil, R.D.Amado, C.J.Horowitz, M.Oka, J.R.Shepard, D.A.Sparrow

Resolution of the Magnetic Moment Problem in Relativistic Theories

NUCLEAR STRUCTURE A=15, 17, 39, 41; calculated isoscalar μ; deduced Schmidt value equality. Relativistic treatment.

doi: 10.1103/PhysRevC.34.746
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1986SP01      Phys.Rev. C33, 287 (1986)

D.A.Sparrow

Relativistic Treatment of (p-bar)-Atom Shifts and Widths

ATOMIC PHYSICS ¹²C, ¹⁴N, ¹⁶O, ¹⁹F, ²³Na, ³¹P, ⁸⁹Y, ⁹⁰Zr, ¹³⁸Ba; calculated anti-protonic level shifts, widths. Relativistic approach.

doi: 10.1103/PhysRevC.33.287
Citations: PlumX Metrics

1985PI09      Phys.Rev. C32, 949 (1985)

J.Piekarewicz, R.D.Amado, D.A.Sparrow

Relativistic Treatment of the Spin Difference Functions in Inelastic Proton Nucleus Scattering

NUCLEAR REACTIONS ¹²C(polarized p, p'), E=500 MeV; calculated spin difference functions, polarization, asymmetry, polarization observables vs momentum transfer. PWIA, nonrelativistic, relativistic treatments.

doi: 10.1103/PhysRevC.32.949
Citations: PlumX Metrics

1985SP03      Phys.Rev.Lett. 54, 2207 (1985)

D.A.Sparrow, J.Piekarewicz, E.Rost, J.R.Shepard, J.A.McNeil, T.A.Carey, J.B.McClelland

Relativistic Impulse Approximation, Nuclear Currents, and the Spin-Difference Function

NUCLEAR REACTIONS ¹²C(p, p'), E=150 MeV; calculated P(θ), analyzing power vs θ difference; deduced nuclear currents role. Relativistic approximation.

doi: 10.1103/PhysRevLett.54.2207
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1984AM01      Phys.Rev. C29, 932 (1984)

R.D.Amado, D.A.Sparrow

Importance of Channel Coupling for very Large Angle Proton-Nucleus Scattering and the Failure of the Optical Model

NUCLEAR REACTIONS ²⁰⁸Pb(p, p), (p, p'), E=800 MeV; calculated σ(θ). Analytic framework, two-channel model.

doi: 10.1103/PhysRevC.29.932
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1984AM02      Phys.Rev. C29, 936 (1984)

R.D.Amado, J.Piekarewicz, D.A.Sparrow, J.A.McNeil

Analytic Expressions for the Dirac Treatment of Nucleon-Nucleus Scattering

NUCLEAR REACTIONS ⁴⁰Ca(polarized n, n), E=500 MeV; ²⁰⁸Pb(polarized p, p), E=800 MeV; calculated σ(θ), asymmetry, spin rotation parameter vs θ. Dirac treatment, analytically evaluated scattering amplitudes.

doi: 10.1103/PhysRevC.29.936
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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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1984SP01      Phys.Rev. C29, 944 (1984)

D.A.Sparrow

Energy Dependence of Nucleon-Nucleus Scattering

NUCLEAR REACTIONS ²⁰⁸Pb(polarized p, p), E=500 MeV; calculated σ, asymmetry vs momentum transfer; deduced incident energy dependence. Dirac impulse approximation, other data input.

doi: 10.1103/PhysRevC.29.944
Citations: PlumX Metrics

1984SP02      Phys.Rev. C29, 949 (1984)

D.A.Sparrow, W.J.Gerace

Pion-Induced Monopole Transitions

NUCLEAR REACTIONS ²⁸Si(π, π'), E=50, 162 MeV; calculated σ(θ), monopole excitation; deduced two-step contributions. Analytic approach.

doi: 10.1103/PhysRevC.29.949
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1983AM04      Phys.Rev. C28, 1663 (1983)

R.D.Amado, J.Piekarewicz, D.A.Sparrow, J.A.McNeil

Dirac-Eikonal Scattering Amplitude

NUCLEAR REACTIONS ⁴⁰Ca(p, p), E=500 MeV; calculated σ(θ) vs momentum transfer. Dirac-eikonal amplitude, Dirac impulse approximation.

doi: 10.1103/PhysRevC.28.1663
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1983AM05      Phys.Rev. C28, 2180 (1983)

R.D.Amado, J.Piekarewicz, D.A.Sparrow, J.A.McNeil

Intermediate-Energy-Proton Scattering, the Dirac Equation, and Nuclear Structure

NUCLEAR REACTIONS ⁴⁰Ca(p, p), (polarized p, p), E=500 MeV; calculated σ(θ), analyzing power, spin rotation parameter vs θ.

doi: 10.1103/PhysRevC.28.2180
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1982AM01      Phys.Rev. C25, 13 (1982)

R.D.Amado, J.A.McNeil, D.A.Sparrow

Analytic Treatment of Multistep Processes in Hadron-Nucleus Scattering

NUCLEAR REACTIONS ¹⁶⁶Er, ¹⁸²W, ¹⁵⁴Sm(p, p'), E=800 MeV; calculated σ(θ). Analytic treatment, multi-step processes, eikonal formalism, coupled-channels method.

doi: 10.1103/PhysRevC.25.13
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1982LA07      Phys.Rev. C25, 1194 (1982)

P.Langacker, D.A.Sparrow

Implications of Anomalous Isospin Violation for the Low Energy Nucleon-Nucleon Interaction

NUCLEAR REACTIONS ¹H(p, p), (n, n), ¹n(n, n), E=0-350 MeV; calculated phase shift differences. Anomalous isospin breaking.

NUCLEAR STRUCTURE ¹⁷O, ¹⁷F, ⁴¹Ca, ⁴¹Sc, ³H, ³He; calculated binding energy differences. ⁴He, ¹²C, ⁴⁰Ca; calculated isospin mixing effects. Charge symmetry breaking forces.

doi: 10.1103/PhysRevC.25.1194
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1982MC09      Phys.Rev. C26, 1141 (1982)

J.A.McNeil, D.A.Sparrow, R.D.Amado

Spin Observables and Nuclear Geometry

NUCLEAR REACTIONS ⁴⁰Ca(polarized p, p), E=500 MeV; calculated proton polarization, spin rotation parameter vs momentum transfer. Analytic formulation.

doi: 10.1103/PhysRevC.26.1141
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1982SP01      Phys.Rev.Lett. 48, 124 (1982)

D.A.Sparrow, R.D.Amado, J.A.McNeil

New Measure of Nuclear Transition Strengths

NUCLEAR REACTIONS ²⁰⁸Pb(p, p'), E=800 MeV; ²⁰⁸Pb(π⁺, π⁺'), (π^-, π^-'), E=291 MeV; ⁶⁰Ni(p, p'), E=1047 MeV; analyzed data. ²⁰⁸Pb, ⁶⁰Ni levels deduced inelastic strength factor. Tassie model, eikonal framework, analytic methods.

doi: 10.1103/PhysRevLett.48.124
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1981AM03      Phys.Rev. C23, 2186 (1981)

R.D.Amado, J.A.McNeil, D.A.Sparrow

Two-Step Processes in Intermediate Energy Hadron-Nucleus Scattering

NUCLEAR REACTIONS ¹⁵⁴Sm, ²⁴Mg(p, p'), E=800 MeV; analyzed σ(θ). Two-step process, closed form eikonal approximation.

doi: 10.1103/PhysRevC.23.2186
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1981ME14      Phys.Rev. C24, 2363 (1981); Erratum Phys.Rev. C25, 2853 (1982)

J.P.Mestre, W.J.Gerace, D.A.Sparrow

Effect of Center-of-Mass Correlations and Intermediate States on π-³He Scattering

NUCLEAR REACTIONS ³He(π⁺, π⁺), (π^-, π^-), (π⁺, π⁰), E=100-300 MeV; calculated σ(θ). Glauber formalism, intermediate state, center of mass correlation effects.

doi: 10.1103/PhysRevC.24.2363
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1980GE06      Phys.Rev. C22, 1197 (1980)

W.J.Gerace, J.P.Mestre, J.F.Walker, D.A.Sparrow

Nuclear Form Factor Sensitivity in the Reaction ³He(π^-, π⁰)³H

NUCLEAR REACTIONS ³He(π^-, π⁰), E=131-400 MeV; calculated σ(θ). Glauber multiple scattering theory, electron scattering form factors.

doi: 10.1103/PhysRevC.22.1197
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1980GE09      Phys.Rev. C22, 2497 (1980)

W.J.Gerace, M.M.Sternheim, K.Yoo, D.A.Sparrow

Limitations of Pion Charge Excharge Calculations using Isospin Identities

NUCLEAR REACTIONS ⁴²Ca, ¹⁸O(π^-, π⁰), (π^-, π⁺), E=40, 200 MeV; calculated σ(θ); deduced approximate elastic amplitude, isospin identity limitations.

doi: 10.1103/PhysRevC.22.2497
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1978RO06      Phys.Rev. C17, 1513 (1978)

E.Rost, J.R.Shepard, D.A.Sparrow

Distorted-Wave Born-Approximation Description of the ⁴He(p, d)³He Reaction at E = 770 MeV

NUCLEAR REACTIONS ⁴He(p, d), E=770 MeV; calculated σ(θ).

doi: 10.1103/PhysRevC.17.1513
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1978SP06      Phys.Rev.Lett. 41, 1101 (1978)

D.A.Sparrow, W.J.Gerace

¹²C-Pion Monopole Scattering

NUCLEAR REACTIONS ¹²C(π^-, π^-'), E=60-150 MeV; calculated σ(θ).

doi: 10.1103/PhysRevLett.41.1101
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1978SP07      Phys.Rev. C18, 1753 (1978)

D.A.Sparrow, A.S.Rosenthal

Pion-Induced Double Charge Exchange on ¹⁸O

NUCLEAR REACTIONS ¹⁸O(π⁺, π⁰), E=139 MeV; ¹⁸O(π⁺, π^-), E=100, 139, 187 MeV; calculated σ(θ). Optical model.

doi: 10.1103/PhysRevC.18.1753
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1977CE01      Phys.Lett. 66B, 127 (1977)

F.E.Cecil, D.A.Sparrow, J.R.Shepard, H.P.Blok

A Study of the Reaction ¹⁶O(p, p')¹⁶O Exciting the 6.05 MeV 0⁺ Level

NUCLEAR REACTIONS ¹⁶O(p, p'), E=27.2 MeV; measured σ(Ep', θ) to 6.05-MeV state.

doi: 10.1016/0370-2693(77)90156-3
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1977DI03      Phys.Lett. 66B, 421 (1977)

N.J.Digiacomo, A.S.Rosenthal, E.Rost, D.A.Sparrow

Pion-Nucleus Scattering at 50 MeV

NUCLEAR REACTIONS ¹²C, ⁴⁰Ca, ⁹⁰Zr, ²⁰⁸Pb(π⁺, X), (π⁺, π⁺), E=50 MeV; calculated σ(θ).

doi: 10.1016/0370-2693(77)90575-5
Citations: PlumX Metrics

1977RO25      Phys.Lett. 71B, 237 (1977)

A.S.Rosenthal, E.Rost, D.A.Sparrow, N.J.Digiacomo

Second Order Density Effects in Low Energy Pion Scattering

NUCLEAR REACTIONS ⁵⁶Fe, ²⁰⁸Pb(π⁺, π⁺), E=50 MeV; calculated σ(θ).

doi: 10.1016/0370-2693(77)90202-7
Citations: PlumX Metrics

1977SP02      Nucl.Phys. A276, 365 (1977)

D.A.Sparrow

Pion Scattering from ⁶Li

NUCLEAR REACTIONS ⁷Li(π, X), E ≈ 80-240 MeV; calculated σ, effects of target structure.

doi: 10.1016/0375-9474(77)90533-4
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1976YA10      Phys.Rev. C14, 1083 (1976)

K.-H.Yang, B.R.Holstein, M.M.Sternheim, D.A.Sparrow

Multiple-Scattering and Nucleon-Recoil Effects in Pion Production by Nucleons on Nuclei

NUCLEAR REACTIONS ²⁰⁸Pb(p, π⁺), (p, π^-), E=760 MeV; calculated σ(θ).

doi: 10.1103/PhysRevC.14.1083
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1975SP06      Phys.Lett. 58B, 309 (1975)

D.A.Sparrow

The Importance of Spin Flip in Pion Charge Exchange Reactions

NUCLEAR REACTIONS ³He(π^-, π⁰), E < 200 MeV; calculated σ(θ).

doi: 10.1016/0370-2693(75)90660-7
Citations: PlumX Metrics

1974SP01      Phys.Lett. 48B, 186 (1974)

D.A.Sparrow, J.F.Walker, W.J.Gerace

Off-Shell Effects in Scattering from the Deuteron

NUCLEAR REACTIONS ²H(p, p); measured nothing, calculated σ. Off-shell effects.

doi: 10.1016/0370-2693(74)90005-7
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1974SP07      Phys.Rev. C10, 2215 (1974)

D.A.Sparrow, M.M.Sternheim, R.R.Silbar

Semiclassical Model for Pion Production by Neutrons on Nuclei

NUCLEAR REACTIONS Al, Cu, Pb(p, π⁺), (p, π^-), (n, π⁺), (n, π^-), (p, γ), (n, γ); calculated σ.

doi: 10.1103/PhysRevC.10.2215
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1970GE12      Nucl.Phys. A154, 576 (1970)

W.J.Gerace, D.A.Sparrow

Monopole Excitations in ¹⁶O

NUCLEAR REACTIONS ¹⁶O(e, e'), E not given; calculated monopole matrix elements, form factors.

doi: 10.1016/0375-9474(70)90128-4
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1969GE08      Phys.Letters 30B, 71 (1969)

W.J.Gerace, D.A.Sparrow

Correlated Charge Form Factors of p-Shell Nuclei

NUCLEAR STRUCTURE ⁶Li, ¹⁶O; calculated charge form factors.

doi: 10.1016/0370-2693(69)90399-2
Citations: PlumX Metrics