The structure of neutron-rich 40,42,44s nuclei has been investigated through in-beam γ-ray spectroscopy using the fragmentation reaction of a 60 MeV A 48Ca beam on a thin Be target. Eγ, Iγ, γγ-coincidence, and γ-ray angular distributions were measured for each produced fragment. The level schemes previously containing only a single γ transition were extended, and spin values were proposed for the new states. The experimental results were interpreted by use of microscopic collective-model and large-scale shell-model calculations. The results of the model calculations are consistent with each other, and give a reasonable description of the experimental results. Both models predict an erosion of the N = 28 shell closure at Z = 16 and suggest a deformed ground state for 40,42S and a spherical-deformed mixed configuration for 44S.
|Number of pages||4887197|
|Journal||Physical Review C - Nuclear Physics|
|Publication status||Published - Nov 1 2002|
ASJC Scopus subject areas
- Nuclear and High Energy Physics