Systematic study of heavy cluster emission from {210-226}^Ra isotopes

TL;DR

This study systematically analyzes heavy cluster emission from Ra isotopes using Coulomb and proximity potential models, confirming experimental data and exploring decay pathways, with implications for future experimental measurements.

Contribution

It introduces a comprehensive theoretical analysis of cluster decay in Ra isotopes, comparing models and identifying favorable decay modes for experimental observation.

Findings

Computed half lives agree with experimental data for certain clusters.

Linear Geiger-Nuttall plots observed for all studied clusters.

Identified specific cluster emissions as promising for future experiments.

Abstract

The half lives for various clusters lying in the cold reaction valleys of {210-226}^Ra isotopes are computed using our Coulomb and proximity potential model (CPPM). The computed half lives of 4^He and 14^C clusters from {210-226}^Ra isotopes are in good agreement with experimental data. Half lives are also computed using the Universal formula for cluster decay (UNIV) of Poenaru et al., and are found to be in agreement with CPPM values. Our study reveals the role of doubly magic 208^Pb daughter in cluster decay process. Geiger - Nuttall plots for all clusters up to 62^Fe are studied and are found to be linear with different slopes and intercepts. {12,14}^C emission from 220^Ra; 14^C emission from {222,224}^Ra; 14^C and 20^O emission from 226^Ra are found to be most favourable for measurement and this observation will serve as a guide to the future experiments.