Questioning the wobbling interpretation of low-spin bands in γ-soft nuclei within the interacting boson-fermion model

Scientific paper - Original scientific paper

• Author: Kosuke Nomura
• Author: C. M. Petrache
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

An alternative interpretation of the recently reported low-lying excited bands in γ-soft odd-mass nuclei as wobbling bands is presented in terms of the interacting boson-fermion model. The model Hamiltonian is determined based on the mean-field calculations with the nuclear energy density functionals. The predicted mixing ratios of the ΔI=1 electric quadrupole to magnetic dipole transition rates between yrast bands and those yrare bands previously interpreted as wobbling bands in 135Pr, 133La, 127Xe, and 105Pd are consistently smaller in magnitude than the experimental values on which the wobbling interpretation is based. These calculated mixing ratios indicate predominant magnetic character in agreement with the new experimental data. The earlier wobbling assignments are severely questioned.

• Keywords (english): low-lying excited bands
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C
• Numbering: vol. 105, no. 2, 024320
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.105.024320
• URN:NBN: urn:nbn:hr:217:055397
• Publication: 2022
• Project: Number: TTP-2018-07-3554; Title (croatian): Exotic Nuclear Structure and Dynamics; Title (english): Exotic Nuclear Structure and Dynamics; Acronym: ExoNSD; Leader: Kosuke Nomura; Jurisdiction: Croatia; Funding stream: TTP
• Document URL: https://link.aps.org/doi/10.1103/PhysRevC.105.024320
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2022 American Physical Society. Received 25 June 2021; Revised 18 January 2022; Accepted 10 February 2022; Published 18 February 2022.
• Created on: 2023-09-13 20:17:54