Signals of bimodality have been investigated in experimental data of quasi-projectile decay produced in Au+Au collisions at 35 AMeV. This same data set was already shown to present several signals characteristic of a first order, liquid-gas-like phase transition. For the present analysis, events are sorted in bins of transverse energy of light charged particles emitted by the quasi-target source. A sudden change in the fragmentation pattern is observed from the distributions of the asymmetry of the two largest fragments, and the charge of the largest fragment. This latter distribution shows a bimodal behavior. The interpretation of this signal is discussed.
@article{arxiv.nucl-ex/0612030,
title = {Bimodal pattern in the fragmentation of Au quasi-projectiles},
author = {M. Bruno and F. Gulminelli and F. Cannata and M. D'Agostino and F. Gramegna and G. Vannini},
journal= {arXiv preprint arXiv:nucl-ex/0612030},
year = {2007}
}
Comments
8 pages, 11 figures, submitted to European Physical Journal A