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arXiv · 1905.02344

Systematic study of $\mathcalα$ decay half-lives based on Gamow--like model with a screened electrostatic barrier

Jun-Hao Cheng·Jiu-Long Chen·Jun-Gang Deng·Xi-Jun Wu·Xiao-Hua Li·Peng-Cheng Chu
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Abstract

In the present work we systematically study $\mathcalα$ decay half-lives of $Z>51$ nuclei using the modified Gamow-like model which includes the effects of the centrifugal potential and electrostatic shielding. For the case of even-even nuclei, this model contains two adjustable parameters: the parameter $a$ related to the screened electrostatic barrier and the radius constant $r_0$, while for the case of odd-odd and odd-A nuclei, it is added a new parameter i.e. hindrance factor $h$ which is used to describe the effect of an odd-proton and/or an odd-neutron. Our calculations can well reproduce the experimental data. In addition, we use this modified Gamow-like model to predict the $\mathcalα$-decay half-lives of seven even-even nuclei with $Z=120$ and some un-synthesized nuclei on their $\mathcalα$ decay chains.

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Jun-Hao Cheng, Jiu-Long Chen, Jun-Gang Deng, Xi-Jun Wu, Xiao-Hua Li, Peng-Cheng Chu. 2019-05-07. Systematic study of $\mathcalα$ decay half-lives based on Gamow--like model with a screened electrostatic barrier. https://doi.org/10.1016/j.nuclphysa.2019.05.002

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