Nuclear-rainbow effect by transfer reactions

Abstract Nuclear-rainbow effects in elastic and inelastic scattering and transfer reactions by the 3 He + 12 C and 4 He + 12 C interactions at E( 3 He) = 98 MeV and E( 4 He) = 90 MeV respectively are observed analyzing the angular distributions of the 2,3 H, 3,4 He and 6 Li particles. The data have been analyzed by a near/far-side formalism using Fuller's model. It has been shown that the far-side component plays the main role in all studied processes. The present investigation proposes a method for the optical model parameter choice for entrance and exit channels. We also observe the different characteristics of the rainbow effects and of the shape of the angular distributions for very deep inelastic processes (high excitation energies) and transfer reactions.