Structure of odd-odd Cs isotopes within the interacting boson-fermion-fermion model based on the Gogny-D1M energy density functional

Abstract

The spectroscopic properties of the odd-odd isotopes ${}^{124-132}$Cs have been studied within the interacting boson-fermion-fermion model based on the Gogny-D1M energy density functional framework. Major ingredients to build the interacting boson-fermion-fermion Hamiltonian, such as the ($\beta ,\gamma$)-deformation energy surfaces for the even-even core nuclei ${}^{124-132}$Xe as well as single-particle energies and occupation probabilities of the odd nucleons, have been computed microscopically with the constrained Hartree-Fock-Bogoliubov method. A few coupling constants of the boson-fermion and residual neutron-proton interactions are fitted to reproduce with a reasonable accuracy the experimental excitation energy of the low-lying levels of the odd-mass and odd-odd nuclei. The method is applied to describe the low-energy low-spin spectra of the odd-odd Cs nuclei and the band structures of higher-spin higher-energy states, mainly based on the $(\nu h_{11/2}{)}^{-1}\otimes \pi h_{11/2}$ configuration. Many of those odd-odd Cs nuclei have been identified as candidates for exhibiting chiral doublet bands.

arXiv comment18 pages, 18 figures, 4 tables; to appear in Phys. Rev. C

References in corpus (13)

• The Shell Model as Unified View of Nuclear Structure
• Status and Future of Nuclear Matrix Elements for Neutrinoless Double-Beta Decay: A Review
• Mean field and beyond description of nuclear structure with the Gogny force: A review
• Beyond Mean-Field Calculations for Odd-A Nuclei
• Nuclear chiral doublet bands data tables
• Microscopic Description of Spherical to Gamma-Soft Shape Transitions in Ba and Xe Nuclei
• Candidate chiral doublet bands in the odd-odd nucleus ${}^{126}$Cs
• Robust Regularity in γ-Soft Nuclei and its Microscopic Realization
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• Beyond mean-field boson-fermion model for odd-mass nuclei
• Shape transitions in odd-mass $\gamma$-soft nuclei within the interacting boson-fermion model based on the Gogny energy density functional
• Description of odd-mass nuclei within the interacting boson-fermion model based on the Gogny energy density functional
• Spectroscopy of odd-odd nuclei within the interacting boson-fermion-fermion model based on the Gogny energy density functional

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• Shape phase transitions in odd-A Zr isotopes
• Nuclear spectra from low-energy interactions
• Mapped interacting boson model for nuclear structure studies
• Microscopic description of quadrupole-hexadecapole coupling in radium, thorium, uranium and plutonium isotopes with the Gogny energy density functional
• Beyond mean-field boson-fermion description of odd nuclei