Nuclear Rainbow Scattering inC12-C12above 160 MeV

Abstract

Published ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$-${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ elastic scattering data at 161.1, 288.6, and 1030 MeV have been analyzed. All three angular distributions show evidence for a nuclear rainbow whose energy evolution agrees with semiclassical predictions. Other features of "light-ion" scattering are confirmed by the optical-model analysis. It is concluded that the appearance of a nuclear rainbow is not determined by the mass of the projectile.