Microscopic study of shape evolution and ground state properties in even-even Cd isotopes using covariant density functional theory

Abstract

We have studied the trend of ground state quadrupole deformation and shape transition in even-even 96−136Cd isotopes. Binding energy, two neutrons separation energies, shell closure parameter, rms radii of neutron and proton, charge radii, and nuclear skin thickness have also been studied as a function of the neutron number. We performed the calculations by employing covariant density functional theory with density-dependent meson exchange and point coupling interactions. The ground-state properties are found in good agreement with available experimental data. Our results predict the shape transition from spherical to prolate, prolate to oblate, oblate to prolate, and prolate to spherical in this isotopic mass chain. Besides, the oblate-prolate shape coexistence is also predicted in 110−114Cd isotopes.