New Geiger-Nuttall law for two-proton radioactivity *
Hong-Ming Liu, You-Tian Zou, Xiao Pan, Jiu-Long Chen, Biao He, Xiao‐Hua Li
Abstract
Abstract In the present work, a two-parameter empirical formula is proposed, based on the Geiger-Nuttall law, to study two-proton ( ) radioactivity. Using this formula, the calculated radioactivity half-lives are in good agreement with the experimental data as well as with calculated results obtained by Goncalves et al . [ Phys. Lett. B 774 , 14 (2017)] using the effective liquid drop model (ELDM), Sreeja et al . [ Eur. Phys. J. A 55 , 33 (2019)] using a four-parameter empirical formula, and Cui et al . [ Phys. Rev. C 101 : 014301 (2020)] using a generalized liquid drop model (GLDM). In addition, this two-parameter empirical formula is extended to predict the half-lives of 22 possible radioactivity candidates with radioactivity released energy , obtained from the latest evaluated atomic mass table AME2016. The predicted results are highly consistent with those obtained using other theoretical models such as the ELDM, GLDM and four-parameter empirical formula.