Study of hot thermally fissile nuclei using relativistic mean field theory

TL;DR

This study investigates the properties of hot thermally fissile nuclei using relativistic mean field theory with new parameter sets, comparing results with established models to understand nuclear behavior at finite temperatures.

Contribution

First application of FSUGarnet and IOPB-I parameter sets to deformed nuclei at finite temperature within relativistic mean field theory.

Findings

Shell correction energy varies with temperature.

Neutron-skin thickness changes with temperature.

Deformation parameters are temperature-dependent.

Abstract

We have studied the properties of hot $^{234,236}$U and $^{240}$Pu nuclei in the framework of relativistic mean field formalism. The recently developed FSUGarnet and IOPB-I parameter sets are implemented for the first time to deform nuclei at finite temperature. The results are compared with the well-known NL3 set. The said isotopes are structurally important because of the thermally fissile nature of $^{233,235}$U and $^{239}$Pu as these nuclei ($^{234,236}$U and $^{240}$Pu) are formed after the absorption of a thermal neutron, which undergoes fission. Here, we have evaluated the nuclear properties, such as shell correction energy, neutron-skin thickness, quadrupole and hexadecapole deformation parameters and asymmetry energy coefficient for these nuclei as a function of temperature.