Preformation of alpha particles in superheavy nuclei within an improved coulomb and proximity potential model

The alpha decay half-life and alpha preformation factor in superheavy elements are investigated within the framework of an improved Coulomb and proximity potential model (ICPPM). The CPPM is improved by including a more accurate expression for the diffuseness parameter (b) in the proximity potential. The alpha decay half-lives are calculated by inputting the experimental Q-values and the preformation probability is extracted. It is noteworthy that computed half-lives for alpha decay for superheavy nuclei by using the improved CPPM can accurately replicate experimental data and considerably minimize discrepancies. The estimated alpha decay half-lives are compared with the predictions of the universal decay law (UDL), 1 the Akrawy–Poenaru (AP) formula 2 and the prediction of the modified formula of Santhosh et al. suggested by Luo et al. 3 The hindrance factor (HF) is also calculated for the alpha decays considered in this study. Low values of the HF indicate the high accuracy of the predictions of the ICPPM.