Competition between alpha and heavy cluster decay in superheavy element 296Og

Abstract

Systematic study of superheavy nuclei 296 Og and its possibilities to emit alpha particle and heavier clusters are studied using Modified Generalized Liquid Drop Model (MGLDM) with Q value dependent preformation factor. Half-lives and branching ratio of all possible cluster emission of 296 Og is checked and only those cluster which are within the experimental half-lives limit (less than 10 30 s) and branching ratio limit (down to 10 -19 ) are considered. Among this, 88 Kr is found to be the most probable heavy cluster, leading to doubly magic 208 Pb daughter nuclei, with half-lives comparable with alpha decay half-lives. Thus the role of doubly magic daughter nuclei in cluster decay is highlighted here. Again the decay modes of 296 Og are also studied by comparing alpha decay half-lives using MGLDM with spontaneous fission half-lives proposed by Bao et al. , and from this, it is found that for superheavy element 296 Og, decays by 3 alpha chains followed by spontaneous fission. We hope that this study would help when this emission is experimentally detected in near future.