Microscopic approach to the spectator matter fragmentation from 400 to 1000 AMeV

TL;DR

This paper investigates gold nuclei multifragmentation at energies of 400, 600, and 1000 MeV/nucleon using a quantum molecular dynamics model, highlighting the effectiveness of advanced clustering algorithms in reproducing experimental fragment yields.

Contribution

It introduces the use of the simulated annealing clusterization algorithm within a QMD framework to accurately model nuclear fragmentation.

Findings

Excellent agreement with experimental fragment multiplicities

Highlights importance of clustering criteria in fragmentation modeling

Demonstrates the effectiveness of SACA in semi-classical models

Abstract

A study of multifragmentation of gold nuclei is reported at incident energies of 400, 600 and 1000 MeV/nucleon using microscopic theory. The present calculations are done within the framework of quantum molecular dynamics (QMD) model. The clusterization is performed with advanced sophisticated algorithm namely \emph{simulated annealing clusterization algorithm} (SACA) along with conventional spatial correlation method. A quantitative comparison of mean multiplicity of intermediate mass fragments with experimental findings of ALADiN group gives excellent agreement showing the ability of SACA method to reproduce the fragment yields. It also emphasizes the importance of clustering criterion in describing the fragmentation process within semi-classical model.