Phase transition dynamics for hot nuclei
B. Borderie, N. Le Neindre, M.F. Rivet, P. D\'esesquelles, E. Bonnet,, R. Bougault, A. Chbihi, D. Dell'Aquila, Q. Fable, J.D. Frankland, E., Galichet, D. Gruyer, D. Guinet, M. La Commara, I. Lombardo, O. Lopez, L., Manduci, P. Napolitani, M. Parlog, E. Rosato, R. Roy, P. St-Onge
TL;DR
This paper investigates the role of spinodal instabilities in nuclear multifragmentation by analyzing high-statistics experiments on hot nuclei, providing experimental evidence for theoretical predictions of phase transition dynamics.
Contribution
It provides the first definitive experimental evidence of spinodal instabilities in nuclear multifragmentation using charge correlation measurements.
Findings
Evidence of spinodal instabilities in hot nuclei
Influence of N/Z ratio on fragmentation dynamics
Confirmation of theoretical phase transition signatures
Abstract
An abnormal production of events with almost equal-sized fragments was theoretically proposed as a signature of spinodal instabilities responsible for nuclear multifragmentation in the Fermi energy domain. On the other hand finite size effects are predicted to strongly reduce this abnormal production. High statistics quasifusion hot nuclei produced in central collisions between Xe and Sn isotopes at 32 and 45 AMeV incident energies have been used to definitively establish, through the experimental measurement of charge correlations, the presence of spinodal instabilities. N/Z influence was also studied.
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