Effects of deformation on the beta-decay patterns of light even-even and odd-mass Hg and Pt isotopes

Abstract

Bulk and decay properties, including deformation energy curves, charge mean square radii, Gamow-Teller (GT) strength distributions, and beta-decay half-lives, are studied in neutron-deficient even-even and odd-A Hg and Pt isotopes. The nuclear structure is described microscopically from deformed quasiparticle random-phase approximation calculations with residual interactions in both particle-hole and particle-particle channels, performed on top of a self-consistent deformed quasiparticle Skyrme Hartree-Fock basis. The observed sensitivity of the, not yet measured, GT strength distributions to deformation is proposed as an additional complementary signature of the nuclear shape. The $\beta$-decay half-lives resulting from these distributions are compared to experiment to demonstrate the ability of the method.

15 pages, 16 figures

References in corpus (11)

• Beyond Mean-Field Calculations for Odd-A Nuclei
• Role of triaxiality in the ground state shape of neutron rich Yb, Hf, W, Os, and Pt isotopes
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• Structural evolution in Pt isotopes with the Interacting Boson Model Hamiltonian derived from the Gogny Energy Density Functional
• The Pt isotopes: comparing the Interacting Boson Model with Configuration Mixing and the Extended Consistent-Q formalism
• Shape evolution in Yttrium and Niobium neutron-rich isotopes
• Gamow-Teller response in deformed even and odd neutron-rich Zr and Mo isotopes
• Stellar electron-capture rates in pf-shell nuclei from quasiparticle random-phase approximation calculations
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• beta-decay in neutron-deficient Hg, Pb, and Po isotopes

Cited by in corpus (9)

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• Microscopic calculations of weak decays in superheavy nuclei
• Beta-decay properties of neutron-rich rare-earth isotopes
• Self-consistent calculations of electron-capture decays in Z=118, 119, and 120 superheavy isotopes
• Competition between weak and alpha-decay modes in superheavy nuclei
• Mean-field calculations of charge radii in ground and isomeric states of Cd isotopes
• Simultaneous description of $\beta$ decay and low-lying structure of neutron-rich even- and odd-mass Rh and Pd nuclei
• Ground state properties and shape evolution in Pt isotopes within the covariant density functional theory
• Bulk and decay properties of neutron-deficient odd-mass Hg isotopes around A = 185