Systematic study of laser-assisted proton radioactivity from deformed nuclei

Abstract

In the present work, we systematically study the effect of ultra-intense laser fields on proton radioactivity of deformed proton emitters with the state-of-the-art Gaussian laser and the latest evaluated nuclear properties table. The calculated results indicate that ultra-intense laser fields affect the proton radioactivity half-life by changing the proton radioactivity penetration probability to some small but finite extent, and the $^{108}\mathrm{I}$ is the most sensitive parent nuclei to the strong laser pulse. Moreover, we found that the released energy of proton radioactivity is negatively related to the rate of change of the proton radioactivity penetration probability. Finally, we investigate the effect of the asymmetric chirp-laser pulse on the average rate of change in proton radioactivity penetration probability. It is shown that the rational use of positive chirp is equivalent to increasing the laser intensity by two orders of magnitude.