Abstract
The low-lying, low-spin levels of were studied with the reaction. Gamma-ray excitation function measurements were performed at incident neutron energies from 1.6 to 3.7 MeV, and -ray angular distributions were measured at neutron energies of 3.0 and 3.5 MeV. From these measurements, level spins, level lifetimes, -ray intensities, and multipole mixing ratios were determined. No evidence for a number of previously placed levels was found. Below 3.3 MeV, many new levels were identified, and the level scheme was re-evaluated. The values support low-lying band structure. The mixed-symmetry state has been identified for the first time. A comparison of the level characteristics with large-scale shell model calculations yielded excellent agreement.
2 More- Received 25 September 2016
- Revised 4 December 2016
DOI:https://doi.org/10.1103/PhysRevC.95.014327
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