Systematic study of near-yrast band structures in odd-mass Pr125137 and Pm127139 isotopes

S. Jehangir, G. H. Bhat, N. Rather, J. A. Sheikh, and R. Palit
Phys. Rev. C 104, 044322 – Published 20 October 2021

Abstract

In the present work, the basis space in the triaxial projected shell-model approach is expanded to include three and five quasiparticle configurations for odd-proton systems. This extension allows us to investigate the high-spin band structures observed in odd-proton systems up to and including the second band-crossing region and, as a first major application of this development, the high-spin properties are investigated for odd-mass Pr125137 and Pm127139 isotopes. It is shown that band crossings in the studied isotopes have mixed structures with the first crossing dominated by one-proton coupled to two-neutron configuration for the lighter isotopes which then changes to three-proton configuration with increasing neutron number. Furthermore, γ bands based on quasiparticle states are also delineated in the present work, and it is predicted that these band structures built on three-quasiparticle configurations become favored in energy for heavier systems in the high-spin region.

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  • Received 3 June 2021
  • Accepted 6 October 2021

DOI:https://doi.org/10.1103/PhysRevC.104.044322

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

S. Jehangir1, G. H. Bhat2,3,4, N. Rather1, J. A. Sheikh4, and R. Palit5

  • 1Department of Physics, Islamic University of Science and Technology, Jammu and Kashmir 192 122, India
  • 2Department of Physics, S.P. College, Srinagar, Jammu and Kashmir 190001, India
  • 3Cluster University Srinagar, Jammu and Kashmir, Srinagar, Goji Bagh 190008, India
  • 4Department of Physics, University of Kashmir, Hazratbal, Srinagar 190006, India
  • 5Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai-400005, India

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Issue

Vol. 104, Iss. 4 — October 2021

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