Systematic study of the system size dependence of global stopping: Role of momentum dependent interactions and symmetry energy

TL;DR

This study uses the IQMD model to explore how momentum dependent interactions and symmetry energy influence nuclear stopping across various system sizes and energies, revealing their significant effects at low energies.

Contribution

It provides a systematic analysis of the impact of momentum dependent interactions and symmetry energy on nuclear stopping in different system sizes and energies.

Findings

Momentum dependent interactions weaken finite size effects.

Nuclear stopping is sensitive to symmetry energy at low energies.

Study covers systems from 80 to 394 mass units at 30-1000 MeV/nucleon.

Abstract

Using the isospin-dependent quantum molecular dynamical (IQMD) model, we systematically study the role of momentum dependent interactions in global stopping and analyze the effect of symmetry energy in the presence of momentum dependent interactions. For this, we simulate the reactions by varying the total mass of the system from 80 to 394 at different beam energies from 30 to 1000 MeV/nucleon over central and semi-central geometries. The study is carried in the presence of momentum dependent interactions and symmetry energy by taking into account hard equation of state. The nuclear stopping is found to be sensitive towards the momentum dependent interactions and symmetry energy at low incident energies. The momentum dependent interactions are found to weaken the finite size effects in nuclear stopping.