Elastic Scattering ofHe3at 20 MeV

Abstract

Absolute differential elastic scattering cross sections were measured for the scattering of 20-MeV ${\mathrm{He}}^3$ particles from V, Ni, Cu, Rh, ${\mathrm{Sn}}^{118}$, Sm, Yb, and Pb. Where practical the measurements were made at laboratory angles extending from 20 to 170 deg. The diffraction-like oscillations exhibited by the elastic-to-Coulomb cross-section ratios are not highly pronounced. A preliminary optical-model analysis was carried out using the hunter automatic search code of Drisko and Bassel. A Woods-Saxon potential with Thomas-type spin-orbit coupling was considered. Reasonable fits to the data were obtained.