Nuclear-rainbow effects by transfer reactions in the α_12C interaction

Angular distributions of the12C (α, α′)12C elastic and inelastic 0 scattering at 72, 81 and 90MeV incident energy and of the12C(α,3He)13C,12C(α,3H)13N and12C(α, d)14N reactions atEα=90 MeV with one-and two-nucleon transfer have been measured. The data have been analysed by a near/far-side formalism. 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. Nuclear rainbow in very deep inelastic processes (high excitation energies) and transfer reactions was observed.