Implications of spin-current couplings for P±A in inelastic proton scattering

W. G. Love and J. R. Comfort
Phys. Rev. C 29, 2135 – Published 1 June 1984
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Abstract

Nonlocal spin-dependent couplings in the effective nucleon-nucleon interaction are shown to probe current spin correlations in inelastic nuclear excitations. Together, these couplings and correlations provide an important dynamical source of polarization-analyzing-power differences observed in inelastic proton scattering. This is illustrated explicitly by schematic calculations for 0+1+ and 0+0 transitions. More realistic distorted-wave impulse approximation calculations have been made for the 0+1+ transition in Zr90 at Ex=8.9 MeV which support the more transparent schematic considerations. Distorted-wave impulse approximation calculations are also compared with experimental (p,p') data for the two lowest 1+ excitations in C12. For isovector 0+1+ transitions these nuclear structure spin current correlations also enter β decay through the "induced tensor" couplings, and this relationship is used to help identify the nonlocality in the nucleon-nucleon effective interaction.

  • Received 21 December 1983

DOI:https://doi.org/10.1103/PhysRevC.29.2135

©1984 American Physical Society

Authors & Affiliations

W. G. Love

  • Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602
  • Institut für Kernphysik, Kernforschungsanlage Jülich, D-5170 Jülich, Federal Republic of Germany

J. R. Comfort

  • Physics Department, Arizona State University, Tempe, Arizona 85287

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Issue

Vol. 29, Iss. 6 — June 1984

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