Abstract
-ray transitions in , , and were measured from -induced reactions with a radioactive beam at a sub-Coulomb barrier energy of 3 MeV per nucleon using particle- coincidence spectroscopy. The transitions were selected by gating on alpha-like particles in a CsI detector following a combination of , , and incomplete fusion-evaporation reactions. Distorted-wave Born approximation calculations suggest little to no contribution from the , , and direct reactions.-ray transitions from previously known and multiplet members in are observed. A new ray is observed, assigned to the third-excited state in , and new multiplet members are suggested. In addition, spin assignments are made by using recent one-neutron transfer data. The updated experimental data for are compared to shell-model calculations for a relatively complete set of states up to the yrast multiplet member at 1505 keV.
- Received 28 March 2014
DOI:https://doi.org/10.1103/PhysRevC.90.014322
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