Abstract
The decay of to the neutron magic nucleus , with only three valence protons with respect to , was investigated. The study was performed at the ISOLDE facility at CERN by means of spectroscopy. The half-life was determined to be ms while the -delayed neutron emission probability was measured as . The analysis of the -gated -ray singles and coincidences from the decay of provides 47 new levels and 70 new transitions in . The decay of was observed and a new decay scheme into the odd-odd nucleus was established. The half-lives of the first and second excited states of were measured via the fast-timing method using (Ce) detectors. The level scheme and transition rates are compared to large-scale shell-model calculations. The low-lying structure of is interpreted in terms of the coupling of the three valence protons outside the doubly magic core.
3 More- Received 11 March 2020
- Revised 4 June 2020
- Accepted 24 June 2020
DOI:https://doi.org/10.1103/PhysRevC.102.014329
©2020 American Physical Society