In-Beam Gamma-Ray Spectroscopy Of Pt-172
PHYSICAL REVIEW C(2003)
摘要
Collective structures in Pt-172 have been investigated by measuring in-beam gamma rays with mass selection and the recoil-decay tagging technique. The discrepancy in the ground-state band from previous studies has been resolved, and a new collective structure that is likely based on an octupole vibration has been identified. A band mixing model is used to determine the properties of the competing near-spherical and deformed ground-state sequences in the light Os-Pt-Hg-Pb region. Evidence for a reduction of deformation in the deformed vacuum structure below N=98 is presented.
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