A systematic study of alpha decay half-lives of isotones in superheavy region

Within the framework of the Coulomb and Proximity Potential Model, the alpha decay half-lives of isotones of Z = 104 − 132 superheavy nuclei with neutron number N = 148, 150, 152, 160, 162, 164, 172, 176, 178, 180, 182, 184, 198, and 200 are investigated systematically by including a Q-value and Isospin dependent preformation factor in the model. The predictive power of the model after including the preformation parameter is verified by calculating the alpha decay half-lives of 65 superheavy nuclei whose experimental alpha decay half-lives are known. For the study of alpha decay of the isotones, the Q-values are calculated using the KTUY and WS4 mass tables. The results are compared with the predictions of empirical models like the Universal Decay Law, Royer Formula, and Akrawy–Poenaru Formula (Modified Royer Formula). From the study, we conclude that after 126, the neutron shell closure occurs are N = 184, for both Z = 114 and 126 superheavy nuclei. Also, Possible neutron magic numbers N = 178, 180, and 182 corresponding to Z = 114 were identified. The island of stability next to Z = 114, N = 184 is located at Z = 126, and N = 184.