Deformation and its influence on $K$ isomerism in neutron-rich Hf nuclei

Abstract

We investigate the influence of deformation on the possible occurrence of long-lived $K$ isomers in Hf isotopes around N=116, using configuration-constrained calculations of potential-energy surfaces. Despite having reduced shape elongation, the multi-quasiparticle states in ${}^{186,188}$Hf remain moderately robust against triaxial distortion, supporting the long expected occurrence of exceptionally long-lived isomers. The calculations are compared with available experimental data.

4 pages, 3 figures, accepted version for publication in Phys. Rev. C

References in corpus (2)

• Shape transitions in neutron-rich Yb, Hf, W, Os, and Pt isotopes within a Skyrme Hartree-Fock + BCS approach
• Effects of high order deformation on superheavy high-$K$ isomers