204 / 2023-04-15 19:45:17

Systematic study of laser-assisted proton radioactivity and α decay from deformed nuclei

极端光下的基础物理学 > 基础物理-II

The ultrahigh-intensity laser has provided a new tool to explore the firmly bound nuclear matter. To obtain achievable quantitative evaluations of the laser influences on proton radioactivity and α decay, we present a systematic study of the laser-assisted proton radioactivity and α decay of deformed nuclei based on the state-of-the-art Gaussian laser. The calculated results show that ultrahigh-intensity laser fields affect the decay half-life by changing the penetration probability to some small but finite extent. Moreover, we found that the rate of change of the penetration probability is negatively related to the released energy of proton radioactivity. To obtain a more significant average rate of change in penetration probability, we study the effect of the chirp-laser pulse on the average rate of change in proton radioactivity penetration probability. It is shown that the rational use of a positive chirp is equivalent to increasing the laser intensity by two orders of magnitude. Furthermore, the relationship between laser properties and the average rate of change of the α 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.