Evidence for Spinodal Decomposition in Nuclear Multifragmentation

Abstract : Multifragmentation of a ``fused system\'\' was observed for central collisions between 32 MeV/nucleon 129Xe and natSn. Most of the resulting charged products were well identified thanks to the high performances of the INDRA 4pi array. Experimental higher-order charge correlations for fragments show a weak but non ambiguous enhancement of events with nearly equal-sized fragments. Supported by dynamical calculations in which spinodal decomposition is simulated, this observed enhancement is interpreted as a ``fossil\'\' signal of spinodal instabilities in finite nuclear systems.
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Submitted on : Tuesday, October 18, 2005 - 2:36:39 PM
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B. Borderie, G. Tabacaru, P. Chomaz, M. Colonna, A. Guarnera, et al.. Evidence for Spinodal Decomposition in Nuclear Multifragmentation. Physical Review Letters, American Physical Society, 2001, 86, pp.3252-3255. ⟨10.1103/PhysRevLett.86.3252⟩. ⟨hal-00012240⟩

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