Abstract
Lifetimes of excited nuclear states were determined in using the recoil distance Doppler-shift technique and the Doppler-shift attenuation method. Results from the band confirm isospin-symmetry breaking for the transition. The lifetime of the state differs considerably from the previously known value. Good agreement is found for the and level lifetimes with respect to previous values. The experimental values are compared with large-scale shell-model calculations employing established interactions in the shell, as well as a modern effective Hamiltonian including multiparticle multihole cross-shell configurations. Extended configuration spaces of this shell-model calculation allow for a detailed comparison with newly determined negative-parity states.
- Received 24 July 2020
- Accepted 14 October 2020
DOI:https://doi.org/10.1103/PhysRevC.102.054302
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