Influence of entrance channels on formation of superheavy nuclei in massive fusion reactions

TL;DR

This paper investigates how entrance channel properties like mass asymmetry and Q values influence the formation of superheavy nuclei in fusion reactions, using the DNS model and comparing different computational approaches.

Contribution

It systematically analyzes the effects of entrance channel parameters on superheavy nuclei production using the DNS model and compares 1D and 2D master equation methods.

Findings

Mass asymmetries significantly affect evaporation residue cross sections.

Reaction Q values are crucial for superheavy nuclei formation.

Comparison shows both methods align with experimental data.

Abstract

Within the framework of the dinuclear system (DNS) model, the production cross sections of superheavy nuclei Hs (Z=108) and Z=112 combined with different reaction systems are analyzed systematically. It is found that the mass asymmetries and the reaction Q values of the combinations play a very important role on the formation cross sections of the evaporation residues. Both methods by solving the master equations along the mass asymmetry degree of freedom (1D) and along the proton and the neutron degrees of freedom (2D) are compared each other and with the available experimental results.