Fragment Distribution in Reactions of $^{78,86}$Kr+$^{181}$Ta

TL;DR

This study uses quantum molecular dynamics and GEMINI models to analyze fragment production in krypton-tantalum reactions at various energies, revealing energy-dependent cross sections and neutron-rich isotope production.

Contribution

It introduces a combined isospin-dependent quantum molecular dynamics and GEMINI model approach to study fragment distributions in Kr+Ta reactions.

Findings

More intermediate and large fragments are produced at larger impact parameters.

Production cross sections decrease with increasing incident energy.

Neutron-rich isotopes are more abundant in the neutron-rich system.

Abstract

Within the framework of the isospin-dependent quantum molecular dynamics model along with the GEMINI model, the reaction of $^{86}$Kr+$^{181}$Ta at 80,120 and 160 MeV/nucleon and the reaction of $^{78}$Kr+$^{181}$Ta at 160 MeV/nucleon are studied, and the production cross sections of the generated fragments are calculated. More intermediate and large mass fragments can be produced in the reaction with a large range of impact parameter. The production cross sections of nuclei such as the isotopes of Si and P generally decrease with the increasing incident energy. The isotopes near the neutron drip line are produced more in the neutron-rich system $^{86}$Kr+$^{181}$Ta.