Abstract
The transitional nucleus is investigated after multinucleon transfer in the and reactions employing the high-resolution Advanced -Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and as an elusive reaction product in the fusion-evaporation reaction employing the High-efficiency Observatory for -Ray Unique Spectroscopy (HORUS) -ray array coupled to a double-sided silicon strip detector at the University of Cologne, Germany. The level scheme of is extended to 5 MeV. A pronounced backbending is observed at along the negative-parity one-quasiparticle band. The results are compared to the high-spin systematics of the isotopes and the isotones. Large-scale shell-model calculations employing the PQM130, SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in provide insight into the changing nuclear structure along the Xe chain towards the shell closure. Proton occupancy in the orbital is found to be decisive for the description of the observed backbending phenomenon.
6 More- Received 25 May 2018
DOI:https://doi.org/10.1103/PhysRevC.98.014309
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