Dynamical description of the fission process using the TD-BCS theory

TL;DR

This paper applies the time-dependent Hartree-Fock with BCS pairing to model the final stage of nuclear fission, achieving good agreement with observed kinetic energies and mass asymmetries, while discussing limitations in two-body observables.

Contribution

It introduces a microscopic dynamical approach using TD-BCS to describe the fission process's last stage, addressing previous theoretical challenges.

Findings

Good agreement with experimental kinetic energy data

Accurate prediction of average mass asymmetry

Discussion of non-physical dependencies in two-body observables

Abstract

The description of fission remains a challenge for nuclear microscopic theories. The time-dependent Hartree-Fock approach with BCS pairing is applied to study the last stage of the fission process. A good agreement is found for the one-body observables: the total kinetic energy and the average mass asymmetry. The non-physical dependence of two-body observables with the initial shape is discussed.