| The nucleus is a complex multi-body system.The collective motion of nucleons,the uncertainty of nuclear force,and the microscopic effects of nucleons,etc.,result in huge differences in informatio the structure of different nuclei and abnormal shell evolution.?decay is the process of spontaneously emitting ? particles from the nucleus.The ? decay is a reliable method to identify new nuclides in experiments,and it is an important tool for obtaining nuclear structural information.Studies on the ? decay of nucleus have shown that the microscopic effects of nucleus,such as the shell effect,and deformation effects have a significant impact on the half-life.Therefore,how to consider the microscopic effects in the ? decay theoretical model is a very interesting topic.This paper is based on the twopotential method to study the influence of nuclear microscopic effects on the ? decay.Main considerations are as follows:1.The deformation effect,isospin effect and shell effect are considered in the potential radius.We replace nuclear traditional potential radius with the nuclear charge radius.2.The odd-even effect of the preformation factor is considered: the preformation factor of odd A nuclei is generally lower than that of adjacent even-even nuclei,and higher than that of adjacent odd-odd nuclei.The accuracy of the ? decay half-life calculated by using the preformation factor that considering the odd-even effect has been greatly improved.3.We combin the radial basis function method to further correct the system deviation of the model.The accuracy of the theoretical calculation value has been improved by about12%.With the radial basis function correction,the predictive ability of the ? decay model has been greatly improved.With these considerations,the accuracy of the ? decay half-life has been increased by approximately 21%.We found that the predictive power of the proposed model for predicting the ? decay half-life of the superheavy nucleus has also been significantly improved. |
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