Laser-assisted two-proton radioactivity

• Published in: Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2024-04, Vol.51 (4), p.45103
• Main Authors: Zou, You-Tian, Cheng, Jun-Hao, Xu, Yang-Yang, Xiao, Qiong, Liu, Si-Man, Shao, Fu-Qiu, Yu, Tong-Pu
• Format: Article
• Language: English
• Subjects: extreme laser field; half-lives; the deformed one-parameter model; two-proton radioactivity
• ISSN: 0954-3899; 1361-6471
• DOI: 10.1088/1361-6471/ad2691

In this work, we systematically investigate the two-proton (2 p ) radioactivity assisted by an ultra-intense laser field within a deformed one-parameter model (OPM). The results show that the ultra-intense laser hardly affects the preformation probability of the emitted 2 p -pair, but it can change the 2 p radioactive half-lives to a finite extent by affecting the penetrability probability. Moreover, we compare the responses of different 2 p radioactivity nuclei to the laser field, and it is found that the 2 p radioactivity of nuclei with a low decay width are more easily influenced by the intense laser field. Furthermore, the effects of different physical parameters of a laser pulse on the 2 p radioactivity were also discussed. The calculations indicate that the lasers characterized by shorter wavelengths and higher intensities exert a more significant influence on the rate of the average change in pulse duration. Finally, we extended the deformed OPM to predict the half-lives of 2 p radioactivity candidates and identified the possible experimental objects of the laser-assisted 2 p radioactivity. This study may promote the possibility of future experimental investigations on extensive facilities like GSI and ELI-NP, etc.