Decay Modes and Half-Life of ^265–282Ds Isotopes

Abstract

The decay modes and half-lives of superheavy ^265–282Ds isotopes have been investigated by using Relativistic Mean Field (RMF) model with density-dependent point-coupling and density-dependent meson-exchange functional. The potential energy surfaces as a funtion of deformation parameters ($\beta ,\gamma$) for the considered Ds nuclei have been obtained by using a triaxially deformed RMF model calculations for the investigation of their ground-state shapes and binding energies. The computed ground-state binding energy values of given Ds isotopes have been used for calculations of Q values of the alpha ($\alpha$), beta-plus/electron capture ($\beta ^{+}$/EC), beta-minus ($\beta ^{-}$) and spontaneous fission (SF) decay modes. The dominant decay modes and half-lives of ^265–282Ds isotopes have been predicted by using the computed Q-values and some empirical formulas. The results of the present study demonstrate that the ^265–282Ds isotopes are well deformed, with prolate configuration in their ground-states. Our estimations for decay modes and half-lives are consistent with available experimental data.