A COMPREHENSIVE STUDY OF THE S-34+ALPHA SYSTEM

The S-34 + alpha system has been studied both experimentally and theor etically, Excitation functions of the S-34 (alpha, gamma) Ar-38 reacti on have been measured over the alpha bombarding energy range E(alpha) = 3.4-4.4 MeV. The low background provided by the 100% enriched(implan ted) target allowed one to observe 10 new resonances, some of them att ributed previously to the S-32 contamination of the target. Decay sche mes, spin-parity values, reduced electromagnetic transition probabilit ies and resonance strengths have been determined, A semimicroscopic al gebraic S-34 + alpha cluster model has been used to describe the new r esonances together with the low-lying states of the Ar-38 nucleus. Thi s analysis indicates that the J(pi) = 1(-) resonances may not be good candidates for the first slate of a K-pi = 0(-) band predicted to star t in the E(x) similar or equal to 10-11 MeV region.