Nuclear shape evolution in even-even Pd isotopic chain

Abstract

The covariant density functional theory is utilized to examine the evolution of shape in even-even 96−130Pd isotopes by using the density-dependent meson-exchange DD-ME2 and the density-dependent point-coupling DD-PC1. This research is carried out by considering the evolution of the ground-state shapes derived from calculations of the axial and triaxial potential energy surfaces. The shape transition in the palladium isotopic chain is very clearly manifested. In addition, various ground-state properties including binding energy, charge radii, two-neutron separation energy, and two-neutron shell gap have been calculated and have been observed to closely match the existing experimental data. Moreover, a robust shell closure is distinctly observed at the magic neutron number N = 82.