Calculations of Spontaneous Fission (SF) half-lives of superheavy nuclei in different models

Abstract

The spontaneous fission (SF) is a decay mode for heavy and superheavy nuclei (Z≥90) and it is an important confining factor explaning the stability of synthesized superheavy nuclei. Since the fission decay is complex, it is difficult to explain such a multi-dimensional system in a complete microscopic manner. In this study, SF half-lives of 284Cn and 284Fl superheavy nuclei are investigated using the direct method, the Universal Decay Law (UDL). The fission decay constant for each possible case is computed by using the UDL and then the SF half-life for 284Cn and 284Fl superheavy nuclei are predicted. The calculated SF half-lives are compared with the results of other semiempirical models and the experimental data. Furthermore, the results are compared with ones of the model in which they proposed this direct method for the SF by using CPPM potentials. Good agreement has been obtained between the results of present approach and the others. This study shows that UDL would also be used in the halflives calculations of Spontaneous Fission of superheavy nuclei in a direct way.