Experimental evidence for the separability of compound-nucleus and fragment properties in fission

TL;DR

This paper presents experimental evidence supporting the idea that properties of compound nuclei and fission fragments can be treated as separable, using a semi-empirical macro-microscopic model that accounts for dynamics during fission.

Contribution

It introduces a semi-empirical approach applying the statistical model with early freeze out to demonstrate the separability of compound-nucleus and fragment properties in fission.

Findings

Evidence for the separability of compound-nucleus and fragment properties.

The macro-microscopic approach explains diverse experimental observations.

Insights into out-of-equilibrium processes in nuclear fission.

Abstract

The large body of experimental data on nuclear fission is analyzed with a semi-empirical ordering scheme based on the macro-microscopic approach and the separability of compound-nucleus and fragment properties on the fission path. We apply the statistical model to the non-equilibrium descent from saddle to scission, taking the influence of dynamics into account by an early freeze out. The present approach reveals a large portion of common features behind the variety of the complex observations made for the different systems. General implications for out-of-equilibrium processes are mentioned.