Levels of33S excited by α-capture reactions

Highly excited levels of33S populated by α-particle capture in29Si have been investigated forEα=1.962 MeV to 4.287 MeV. Excitation curves measured with Ge(Li) and BF3 detectors are reported. More than fifty resonances can be identified with levels in33S. (α, γ) angular distributions measured on five strong resonances have yieldedJπ values 1/2+, 3/2 +, 5/2−, 5/2−, 5/2− and 3/2+ respectively, for theE x =10.054, 10.466, 10.523, 10.721, 10.758 and 10.776 MeV levels in33S. Elastic scattering experiments have been performed and theJπ assignments are found to be consistent with thel-values inferred from the elastic scattering data. Decay schemes from the above33S levels have been proposed. A new level at 9.245 MeV is also suggested and theJπ values for the 4.425 and 2.87 MeV states are shown to be consistent with 7/2+ and 3/2+ assignment, respectively.