Proton scattering from C12 between 120 and 200 MeV and the optical potential

H. O. Meyer, P. Schwandt, W. W. Jacobs, and J. R. Hall
Phys. Rev. C 27, 459 – Published 1 February 1983
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Abstract

Cross sections and analyzing powers are presented for C12(p, p)C12 elastic scattering at 122 and 160 MeV. The data cover a large angular range (up to θlab=154°) and extend to lower energies an earlier, similar measurement at 200 MeV. The complete data set is analyzed in the framework of the optical model. Besides the standard Woods-Saxon potential, nonstandard radial shapes for the central and the spin-orbit potentials are investigated. Although the number of free parameters for the nonstandard potential is substantially reduced from the standard potential, it provides an improved fit to the data and a description of C12(p, p)C12 scattering with a simple monotonic energy dependence in the region 100-200 MeV. The characteristic features of the nonstandard potential are reproduced by microscopic theories.

NUCLEAR REACTIONS C12(p, p), Ep=122, 160 MeV, θlab=6°154°; measured σ(θ) and A(θ); optical-model analysis, including data at 200 MeV, nonstandard potential shapes, energy dependence of optical potential.

  • Received 22 September 1982

DOI:https://doi.org/10.1103/PhysRevC.27.459

©1983 American Physical Society

Authors & Affiliations

H. O. Meyer, P. Schwandt, W. W. Jacobs, and J. R. Hall

  • Indiana University Cyclotron Facility, Bloomington, Indiana 47405

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Issue

Vol. 27, Iss. 2 — February 1983

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