Cold reaction valleys in the radioactive decay of superheavy {286}^112, {292}^114 and {296}^116 nuclei

TL;DR

This study investigates cold reaction valleys in the radioactive decay of superheavy nuclei using Coulomb and Proximity Potential, identifying optimal cluster emissions and comparing calculated half-lives with existing models.

Contribution

The paper introduces a Coulomb and Proximity Potential Model to analyze decay pathways and half-lives of superheavy nuclei, highlighting new cluster emission possibilities.

Findings

Identification of optimal cluster emissions like 8Be and 14C in cold valleys.

Deep minima regions centered on 208Pb and 132Sn.

Computed half-lives agree with existing systematics and models.

Abstract

Cold reaction valleys in the radioactive decay of superheavy nuclei {286}^112, {292}^114 and {296}^116 are studied taking Coulomb and Proximity Potential as the interacting barrier. It is found that in addition to alpha particle, 8^Be, 14^C, 28^Mg, 34^Si, 50^Ca, etc. are optimal cases of cluster radioactivity since they lie in the cold valleys. Two other regions of deep minima centered on 208^Pb and 132^Sn are also found. Within our Coulomb and Proximity Potential Model half-life times and other characteristics such as barrier penetrability, decay constant for clusters ranging from alpha particle to 68^Ni are calculated. The computed alpha half-lives match with the values calculated using Viola--Seaborg--Sobiczewski systematics. The clusters 8^Be and 14^C are found to be most probable for emission with T_1/2 < 1030s. The alpha-decay chains of the three superheavy nuclei are also studied. The computed alpha decay half-lives are compared with the values predicted by Generalized Liquid Drop Model and they are found to match reasonably well.