Regular Article - Theoretical Physics
Isospin effects on decay and cluster radioactivity
The Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, 100875, Beijing, China
2 Institute of Radiation Technology, Beijing Academy of Science and Technology, 100875, Beijing, China
3 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, 730000, Lanzhou, China
Accepted: 25 August 2022
Published online: 3 September 2022
An improved semi-empirical formula including isospin effects for decay and cluster radioactivity half-lives is proposed based on the WKB barrier penetrability. Compared with the original formula, a nuclear potential with an isospin related Woods-Saxon form is considered in total potential energy of the radioactive system in the present work. It is found that the inclusion of the isospin correlation term improves the agreement of the theoretical results of half-lives and the experimental data. Moreover, a statistical analysis is performed for the experimental detected cluster radioactivity. Predictions for decay half-lives together with the branching ratio between the decay and cluster emissions are proposed for some unknown superheavy nuclei with , 120, 122, and 124 using this improved semi-empirical formula.
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