Systematic study of two-proton radioactivity half-lives based on a modified Gamow-like model

TL;DR

This paper presents a modified Gamow-like model to systematically study two-proton radioactivity half-lives, accurately reproducing experimental data and predicting unknown cases with good agreement to other models.

Contribution

The paper introduces a modified Gamow-like model that improves the prediction of two-proton radioactivity half-lives near the proton drip line.

Findings

The model accurately reproduces experimental half-lives.

Predicted half-lives for 22 candidate nuclei.

Good agreement with other theoretical models.

Abstract

In the present work, we systematically study the two-proton (2p) radioactivity half-lives of nuclei close to the proton drip line within a modified Gamow-like model. Using this model, the calculated 2p radioactivity half-lives can well reproduce the experimental data. Moreover, we use this model to predict the 2p radioactivity half-lives of 22 candidates whose 2p radioactivity is energetically allowed or observed but not yet quantied in evaluated nuclear properties table NUBASE2016. The predicted results are in good agreement with the ones obtained by using Gamow-like model, effective liquid drop model (ELDM), generalized liquid drop model (GLDM) as well as a four-parameter formula.