Experimental study of the 38S excited level scheme
PHYSICAL REVIEW C(2023)
摘要
Information on the 38S level scheme was expanded through experimental work utilizing a fusion-evaporation reaction and in-beam & gamma; -ray spectroscopy. Prompt & gamma; -ray transitions were detected by the Gamma-Ray Energy Tracking Array (GRETINA) and recoiling 38S residues were selected by the Fragment Mass Analyzer (FMA). Tools based on machine-learning techniques were developed and deployed for the first time in order to enhance the unique selection of 38S residues and identify any associated & gamma; -ray transitions. The new level information, including the extension of the even-spin yrast sequence through J & pi; = 8(+), was interpreted in terms of a basic single-particle picture as well shell-model calculations which incorporated the empirically derived FSU interaction. A comparison between the properties of the yrast states in the even-Z, N = 22 isotones from Z = 14 to 20, and for 36Si - 38S in particular, was also presented with an emphasis on the role and influence of the neutron 1p3/2 orbital on the structure in the region.
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