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.