On the thermalization achieved in heavy-ion collisions

TL;DR

This paper investigates thermalization in heavy-ion collisions at energies of maximum intermediate mass fragment production, using simulations to analyze fragment properties, stability, and stopping mechanisms.

Contribution

It provides new insights into the conditions required for complete stopping and thermalization in heavy-ion collisions, especially for very heavy systems.

Findings

Complete stopping requires very heavy systems.

Fragment stability assessed through persistence coefficient and gain term.

Thermalization characterized by relative momentum, anisotropy ratio, and rapidity distribution.

Abstract

We simulate the central reactions of nearly symmetric, and asymmetric systems, for the energies at which the maximum production of IMFs occurs (E$_{c.m.}^{peak}$).This study is carried out by using hard EOS along with cugnon cross section and employing MSTB method for clusterization. We study the various properties of fragments. The stability of fragments is checked through persistence coefficient and gain term. The information about the thermalization and stopping in heavy-ion collisions is obtained via relative momentum, anisotropy ratio, and rapidity distribution. We find that for a complete stopping of incoming nuclei very heavy systems are required.