Abrupt changes in alpha decay systematics as a manifestation of collective nuclear modes

TL;DR

The paper discusses an abrupt change in alpha decay patterns near N=126, attributing it to hindered nucleon clustering caused by limitations in pairing collectivity, revealing insights into nuclear structure effects.

Contribution

It introduces a new explanation for the change in alpha decay systematics based on the hindrance of nucleon clustering due to pairing mode effects.

Findings

Abrupt change in alpha decay systematics near N=126

Clustering hindrance linked to pairing collectivity limitations

Nuclear structure insights into nucleon configuration effects

Abstract

An abrupt change in $\alpha$ decay systematics around the N=126 neutron shell closure is discussed. It is explained as a sudden hindrance of the clustering of the nucleons that eventually form the $\alpha$ particle. This is because the clustering induced by the pairing mode acting upon the four nucleons is inhibited if the configuration space does not allow a proper manifestation of the pairing collectivity.