INDRA collaboration

Physics Letters B 723, (2013) 140 - 144

Link to arXiv version

Simulations based on experimental data obtained from multifragmenting quasi-fused nuclei produced in central 129Xe+natSn collisions have been used to deduce event by event freeze-out properties in the thermal excitation energy range 4–12AMeV [S.Piantelli et al.]. From these properties and the temperatures deduced from proton transverse momentum fluctuations, constrained caloric curves have been built. At constant average volumes caloric curves exhibit a monotonic behaviour where as for constrained pressures a back bending is observed. Such results support the existence of a first order phase transition for hot nuclei.