Abstract
The close similarity between the shell structures in the Sn and Pb regions is a well known phenomenon. Thus, using the correspondence between the high- orbits located above the and shell gaps, we discuss the evolutions of the fully aligned states with one broken proton pair in the and isotones. A long-lived isomeric state was discovered in Pa more than thirty years ago and, despite two other experiments giving new experimental results, the discussions on its main properties (spin, parity, configuration) remained inconclusive. Then, using the comparison with the isomeric state recently measured in La, the isomeric state of Pa is assigned as the fully aligned state of the configuration.
- Received 22 October 2012
DOI:https://doi.org/10.1103/PhysRevC.87.014309
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