The behaviour of constrained caloric curves as ultimate signature of a phase transition for hot nuclei

Abstract : Simulations based on experimental data obtained from multifragmenting quasifused nuclei produced in central 129Xe + natSn collisions have been used to deduce event by event freeze-out properties on the thermal excitation energy range 4-12 AMeV. From these properties and temperatures deduced from proton transverse momentum fluctuations constrained caloric curves have been built. At constant average volumes caloric curves exhibit a monotonous behaviour whereas for constrained pressures a backbending is observed. Such results support the existence of a first order phase transition for hot nuclei.
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Conference papers
11th International Conference on Nucleus-Nucleus Collisions (NN2012), May 2012, San Antonio, Texas, United States. 420, pp.012081, 2013, <10.1088/1742-6596/420/1/012081>


https://hal.archives-ouvertes.fr/hal-00720759
Contributor : Bernard Borderie <>
Submitted on : Wednesday, July 25, 2012 - 5:48:34 PM
Last modification on : Wednesday, January 28, 2015 - 11:07:14 AM

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B. Borderie, E. Galichet, M.F. Rivet, S. Piantelli, Ad. R. Raduta, et al.. The behaviour of constrained caloric curves as ultimate signature of a phase transition for hot nuclei. 11th International Conference on Nucleus-Nucleus Collisions (NN2012), May 2012, San Antonio, Texas, United States. 420, pp.012081, 2013, <10.1088/1742-6596/420/1/012081>. <hal-00720759>

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