NUCLEAR RAINBOW PHENOMENON IN QUASI-ELAST IC PROCESSES INDUCED BY LIGHT-IONS ON SI-30 NUCLEI

The nuclear rainbow phenomemon in quasi-elastic processes (inelastic s cattering, one-nucleon transfer reactions) induced by He-3,He-4 ious o n deformed target nuclei is discussed. Analyses of He-3 inelastic scat tering and (He-3,alpha) reaction on Si-30 at 60 MeV have been carried out, using the parametrized form of the scattering matrix proposed by the authors in previous papers. We conclude that a more precise defini tion of the interaction parameters is provided at short distances, abo ut twice smaller than the strong absorption radius. Refractive and dif fractive contributions to the differential cross section for inelastic scattering to the first 2(+) state of the target nuclei are separated .