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Bimodal pattern in the fragmentation of Au quasi-projectiles

M. Bruno·F. Gulminelli·F. Cannata·M. D'Agostino·F. Gramegna·G. Vannini
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Abstract

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.

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M. Bruno, F. Gulminelli, F. Cannata, M. D'Agostino, F. Gramegna, G. Vannini. 2006-12-29. Bimodal pattern in the fragmentation of Au quasi-projectiles. https://arxiv.org/abs/nucl-ex/0612030

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