Half-life of short-lived neutron-excess nuclei that participate in the r-process

Abstract

A quasi-classic model of a strength function based on finite Fermi systems is used to predict β-decay periods for neutron-excess nuclei. The results from calculations are compared to experimental data and other predictions. It is shown that the accuracy of the calculated half-life periods of short-lived neutronrich nuclei is sufficient for modeling the nucleosynthesis of heavy nuclei in the r-process.