Decay studies of $^{288-287}115$ alpha-decay chains

TL;DR

This study investigates alpha-decay chains of superheavy nuclei $^{288-287}115$ using the preformed cluster model, comparing calculated half-lives with experimental data and exploring potential cluster decay modes, revealing stability patterns related to nuclear shell effects.

Contribution

It applies the preformed cluster model to analyze alpha and cluster decay modes of $^{288-287}115$ chains, providing new insights into their stability and decay properties.

Findings

Certain nuclei are more stable against alpha decay due to shell effects.

Cluster decay half-lives for $^{14}C$ and $^{48}Ca$ are below experimental detection limits.

Decay chains show stability near deformed shell closures Z=108, N=162, Z=100, N=152.

Abstract

The $\alpha$-decay chains of $^{288-287}115$ are studied along with the possible cluster decay modes by using the preformed cluster model (PCM). The calculated $\alpha$-decay half-lives are compared with experimental data and other model calculations. The calculated Q-values, penetration probabilities and preformation probabilities factors for $\alpha$-decay suggest that $^{283}_{170}113$,$^{287}_{172}115$ and $^{272}_{165}107$ parent nuclei are more stable against the $\alpha$-decay. These alpha decay chains are further explored for the possibilities of cluster decay. Decay half lives of different cluster from different nuclei of the decay chains point to the extra stability near or at the deformed shells Z=108, N=162 and Z=100, N=152. The decay half-lives for $^{14}C$ and $^{48}Ca$ clusters are lower than the current experimental limit ($\approx$ $10^{28}$sec).