Laser-assisted deformed $\alpha$ decay of the ground state even-even nuclei

TL;DR

This study investigates how ultra-intense laser fields influence the alpha decay half-life of deformed even-even nuclei, deriving analytical formulas and analyzing the effects of laser properties on decay probabilities.

Contribution

The paper introduces analytical formulas for the change in alpha decay probability under laser fields and explores the relationship between laser parameters and decay rate modifications.

Findings

Laser fields slightly alter alpha decay half-lives.

Derived formulas agree with numerical solutions for heavy nuclei.

Shorter laser wavelengths increase decay probability change.

Abstract

In the present work, the influence of ultra-intense laser fields on the $\alpha$ decay half-life of the deformed ground state even-even nucleus with the mass number $52 \leq Z \leq 118$ is systematically studied. The calculations show that the laser field changes the $\alpha$ decay half-life by varying the $\alpha$ decay penetration probability in a small range. Moreover, the analytical formulas for the rate of change of the $\alpha$ decay penetration probability in the ultra-intense laser fields have been derived by the spherical approximation, which agrees well with the numerical solutions for nuclei with more significant proton numbers. This provides a fast way to estimate the rate of change of the $\alpha$ decay penetration probability for superheavy nuclei. Furthermore, the relationship between laser properties and the average rate of change of the $\alpha$ decay penetration probability is investigated. The calculations indicate that the shorter the wavelength of the laser pulse is, the larger the average rate of change of the penetration probability.