Optical model analysis of 200 MeV p→+16O elastic scattering data measured to large momentum transfers

C. W. Glover, P. Schwandt, H. O. Meyer, W. W. Jacobs, J. R. Hall, M. D. Kaitchuck, and R. P. DeVito
Phys. Rev. C 31, 1 – Published 1 January 1985
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Abstract

Differential cross sections and analyzing powers are presented for 16O(p→,p)16O elastic scattering at Ep=200 MeV, extending over a large range of momentum transfer (up to q∼6 fm1). The data were analyzed in the framework of the nonrelativistic optical model. In addition to standard Woods-Saxon potentials, nonstandard radial shapes for the central and the spin-orbit potentials were investigated. The data are not adequately described over the entire angular range using a Woods-Saxon real central potential, but two distinct parametrizations (not simply related by the usual discrete or continuous parameter ambiguities which maintain a rough phase-shift equivalence) were found which provide a far superior representation. The similarity in the angular distributions given by these two potentials can be attributed to the fact that the non-spin-flip partial-wave scattering amplitudes aL differ by only a simple rotation in the complex aL plane. This rotation has a negligible effect on the predicted cross section and the analyzing power angular distributions, but leads to sizable differences in the predicted spin-rotation function Q(θ).

  • Received 18 October 1984

DOI:https://doi.org/10.1103/PhysRevC.31.1

©1985 American Physical Society

Authors & Affiliations

C. W. Glover, P. Schwandt, H. O. Meyer, W. W. Jacobs, J. R. Hall, M. D. Kaitchuck, and R. P. DeVito

  • Indiana University Cyclotron Facility, Bloomington, Indiana 47405

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Vol. 31, Iss. 1 — January 1985

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