Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2002-12-17
Eur.Phys.J. A18 (2003) 103-116
Physics
Nuclear Physics
Nuclear Experiment
14 pages, 12 figures; to appear in European Physics Journal A. modified figures 7,8; added appendix and figures 11,12
Scientific paper
10.1140/epja/i2002-10166-9
Enhanced production of events with almost equal-sized fragments is experimentally revealed by charge correlations in the multifragmentation of a finite nuclear system selected in $^{129}$Xe central collisions on $^{nat}$Sn. The evolution of their weight with the incident energy: 32, 39, 45, 50 AMeV, is measured.Dynamical stochastic mean field simulations performed at 32 AMeV, in which spinodal instabilities are responsible for multifragmentation, exhibit a similar enhancement of this kind of events. The above experimental observation evidences the spinodal decomposition of hot finite nuclear matter as the origin of multifragmentation in the Fermi energy regime.
Borderie Bernard
Desesquelles Pierre
Parlog M.
Rivet Marie-France
Tãbãcaru G.
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