STUDY OF (ALPHA, HE-3) AND (ALPHA, T) REACTIONS ON SI-28 AT 45 MEV

The Si-28(alpha, He-3)Si-29, Si-28(alpha, t)P-29 and Si(alpha, alpha)S i reactions were studied at E(alpha) = 45 MeV. Exact finite-range (EFR ) DWBA analysis was carried out for the transitions to the ground stat e and to five excited states in Si-29 and P-29. Spectroscopic strength s G were extracted for all the states and were compared with the predi ctions from shell-model and quasi-particle core-coupling calculations. Similar EFR-DWBA analyses were carried out from available (unpublishe d) data for the Si-28(alpha, He-3)Si-29 reaction at E(alpha) = 64.9 an d 120 MeV, and for the Si-28((alpha), t)P-29 reaction at E(alpha) = 50 and 64.9 MeV. The comparison of experimental and theoretical values o f G are provided.