Competition between alpha and heavy cluster decay in superheavy element 296Og
Systematic study of superheavy nuclei 296Og 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 296Og is checked and only those cluster which are within the experimental half-lives limit (less than 1030s) and branching ratio limit (down to 10-19) are considered. Among this, 88Kr is found to be the most probable heavy cluster, leading to doubly magic 208Pb 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 296Og 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 296Og, 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.
Alpha decay, Spontaneous fission, Superheavy element
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