Volume 85, Number 6, March 2009
Article Number 62001
Number of page(s) 5
Section Nuclear Physics
Published online 07 April 2009
EPL, 85 (2009) 62001
DOI: 10.1209/0295-5075/85/62001

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

Yogesh K. Vermani and Rajeev K. Puri

Department of Physics, Panjab University - Chandigarh-160014, India

received 22 November 2008; accepted in final form 23 February 2009; published March 2009
published online 7 April 2009

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 an advanced sophisticated algorithm namely the simulated annealing clusterization algorithm (SACA) along with the conventional spatial correlation method. A quantitative comparison of the mean multiplicity of intermediate mass fragments with experimental findings of the ALADiN group gives excellent agreement showing the ability of the SACA method to reproduce the fragment yields. It also emphasizes the importance of the clustering criterion in describing the fragmentation process within the semi-classical model.

25.70.Pq - Multifragment emission and correlations.
24.10.Lx - Monte Carlo simulations (including hadron and parton cascades and string breaking models).

© EPLA 2009