Eduard E Saperstein
National Recearch Centre ‘Kurchatov Insitute’, Russia
Title: Alpha-decay energies of superheavy nuclei for the Fayans functional
Biography
Biography: Eduard E Saperstein
Abstract
Alpha-decay energies for several chains of superheavy nuclei are calculated within the self-consistent mean-field approach by using the Fayans energy density functional (EDF) FaNDF0. They are compared to the experimental data and predictions of two popular Skyrme EDFs, SLy4 and SkM* and of the macro-micro method as well. The corresponding lifetimes are calculated with the use of the semi-phenomenological formulas by Parkhomenko and Sobiczewski and by Royer and Zhang. There are two essential differences
between the Fayans EDF and all Skyrme EDFs. The main, in-volume term of the Fayans EDF is different from the analogous one of the Skyrme EDF by the density dependent so-called ‘Fayans denominator’. The use of the bare mass, m*=m, is another peculiarity of the Fayans EDF, whereas the use of the effective mass m*
on their charge radii and magnetic moments of odd Pb isotopes. The Fayans EDF predicts the spherical ground state of all lead isotopes, in agreement with experiment.