Calculations of new α-decay data within the generalized density-dependent cluster model

Abstract

The experimental data of newly observed α-decay chains, including new superheavy elements and medium-mass neutron-deficient isotopes, have been investigated by the generalized density-dependent cluster model. Instead of the Wentzel–Kramers–Brillouin barrier penetration probability, the exact solution of the Schrödinger equation with outgoing Coulomb wave boundary conditions is presented. The calculated α-decay half-lives are found to be in good agreement with the experimental data. For superheavy nuclei, the calculated half-lives show that their stability against α-decay has a considerable increase with increasing neutron numbers. Predictions on α-decay half-lives are made for a new element 120, which may be useful for ongoing experiments.