Energy of vanishing flow in heavy-ion collisions: Role of Coulomb interactions and asymmetry of a reaction

TL;DR

This paper investigates how Coulomb interactions and the asymmetry of reactions influence the energy at which transverse flow vanishes in heavy-ion collisions, considering different equations of state and reaction asymmetries.

Contribution

It provides a detailed analysis of the effects of Coulomb forces and asymmetry on the disappearance of transverse flow across various reaction configurations.

Findings

Mean-field contribution is higher at low energies for symmetric systems.

Coulomb interactions significantly affect the balance energy in asymmetric reactions.

Different equations of state alter the energy at which flow vanishes in asymmetric collisions.

Abstract

We aim to understand the role of Coulomb interactions as well as of different equations of state on the disappearance of transverse flow for various asymmetric reactions leading to same total mass. For the present study, the total mass of the system is kept constant (ATOT = 152) and asymmetry of the reaction is varied between 0.2 and 0.7. We find that the contribution of mean-field at low incident energies is more for nearly symmetric systems, while the trend is opposite at higher incident energies. The Coulomb interactions as well as different equations of state are found to affect the balance energy significantly for larger asymmetric reactions.