Entrance Channel Dynamics of Hot and Cold Fusion Reactions Leading to Superheavy Elements

TL;DR

This paper uses microscopic TDHF theory to analyze the entrance channel dynamics of specific fusion reactions leading to superheavy elements, providing insights into excitation energies and capture cross-sections with good experimental agreement.

Contribution

It applies a fully microscopic, parameter-free TDHF approach to study fusion dynamics and calculates relevant quantities for superheavy element formation.

Findings

Good agreement with experimental capture cross-sections

Deformation influences ion-ion potential calculations

Method effectively predicts excitation energies

Abstract

We investigate the entrance channel dynamics for the reactions $\mathrm{^{70}Zn}+\mathrm{^{208}Pb}$ and $\mathrm{^{48}Ca}+\mathrm{^{238}U}$ using the fully microscopic time-dependent Hartree-Fock (TDHF) theory coupled with a density constraint. We calculate excitation energies and capture cross-sections relevant for the study of superheavy formations. We discuss the deformation dependence of the ion-ion potential for the $\mathrm{^{48}Ca}+\mathrm{^{238}U}$ system and perform an alignment angle averaging for the calculation of the capture cross-section. The results show that this parameter-free approach can generate results in good agreement with experiment and other theories.