Abstract
Differential cross sections and analyzing powers are presented for O(p→,pO elastic scattering at MeV, extending over a large range of momentum transfer (up to q∼6 ). 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 differ by only a simple rotation in the complex 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