Fission decay of $^{282}$Cn studied using cranking inertia

TL;DR

This paper investigates the fission decay of superheavy nucleus $^{282}$Cn using a method that combines cranking inertia and a macroscopic-microscopic potential to improve theoretical predictions of fission half-lives.

Contribution

It introduces a novel approach utilizing cranking inertia and a two-center shell model to enhance the accuracy of spontaneous fission half-life calculations.

Findings

Improved agreement with experimental fission half-life data.

Demonstrated the effectiveness of the combined method for superheavy nuclei.

Highlighted the limitations of previous models in predicting spontaneous fission times.

Abstract

Superheavy nuclei produced until now are decaying mainly by $\alpha$ emission and spontaneous fission. Calculated $\alpha$ decay half-lives are in agreement with experimental data within one order of magnitude. The discrepancy between theory and experiment can be as high as ten orders of magnitude for spontaneous fission. We analyze a way to improve the accuracy by using the action integral based on cranking inertia and a potential barrier computed by the macroscopic-microscopic method with a two-center shell model. Illustrations are given for $^{282}$Cn which has a measured fission half-life.