Dynamical approach to spectator fragmentation in Au+Au reactions at 35 MeV/A

Details Dynamical approach to spectator fragmentation in Au+Au reactions at 35 MeV/A Dynamical approach to spectator fragmentation in Au+Au reactions at 35 MeV/A

2010-09-15

arxiv.org/abs/1009.2886v2

Central Eur.J.Phys 9, pp. 621-627 (2010)

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 figures, accepted

Scientific paper

10.2478/s11534-010-0087-8

The characteristics of fragment emission in peripheral $^{197}$Au+$^{197}$Au collisions 35 MeV/A are studied using the two clusterization approaches within framework of \emph{quantum molecular dynamics} model. Our model calculations using \emph{minimum spanning tree} (MST) algorithm and advanced clusterization method namely \emph{simulated annealing clusterization algorithm} (SACA) showed that fragment structure can be realized at an earlier time when spectators contribute significantly toward the fragment production even at such a low incident energy. Comparison of model predictions with experimental data reveals that SACA method can nicely reproduce the fragment charge yields and mean charge of the heaviest fragment. This reflects suitability of SACA method over conventional clusterization techniques to investigate spectator matter fragmentation in low energy domain.

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