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arXiv · 2203.12851

Extended triaxial projected shell model approach for odd-neutron nuclei

S. Jehangir·Nazira Nazir·G. H. Bhat·J. A. Sheikh·N. Rather·S. Chakraborty·R. Palit
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Abstract

In an effort to elucidate the rich band structures observed in odd-neutron systems, triaxial projected shell model approach is extended to include three-quasineutron and five-quasiparticle configurations. This extension makes it possible to investigate the high-spin states up to and including the second band crossing. Detailed investigation has been performed for odd-mass Xe isotopes with the extended basis, and it is shown that character of the band crossing along the yrast line changes with shell filling of the 1h11/2 orbital. Further, it is observed that the three-quasiparticle state that crosses the ground-state configuration, leading to the normal band crossing phenomenon along the yrast line, first crosses the {\gamma} band based on the ground-state configuration at an earlier spin value. This crossing feature explains the occurrence of the signature inversion observed in the {\gamma} bands for some of the studied isotopes.

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S. Jehangir, Nazira Nazir, G. H. Bhat, J. A. Sheikh, N. Rather, S. Chakraborty, R. Palit. 2022-03-24. Extended triaxial projected shell model approach for odd-neutron nuclei. https://doi.org/10.1103/physrevc.105.054310

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