NUCLEAR-RAINBOW EFFECTS BY TRANSFER-REACTIONS IN THE ALPHA-12 INTERACTION(C)

Angular distributions of the C-12(alpha, alpha') C-12 elastic and inel astic scattering at 72, 81 and 90 MeV incident energy and of the C-12( alpha, He-3) C-13, C-12(alpha, H-3) N-13 and C-12(alpha, d) N-14 react ions at E(alpha) = 90 MeV with one- and two-nucleon transfer have been measured. The data have been analysed by a near/far-side formalism. I t has been shown that the far-side component plays the main role in al l studied processes. The present investigation proposes a method for t he optical-model parameter choice for entrance and exit channels. Nucl ear rainbow in very deep inelastic processes (high excitation energies ) and transfer reactions was observed.