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arXiv · 0801.3140

Statistical and dynamical aspects in the decay of hot neutron-rich nuclei

M. Veselsky·A. L. Keksis·G. A. Souliotis·K. Wang·E. Bell·D. V. Shetty·M. Jandel·S. J. Yennello·Y. G. Ma
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Abstract

The signal of isospin-asymmetric phase transition in the evolution of the chemical potential was observed for hot quasi-projectiles produced in the reactions 40,48Ca + 27Al confirming an analogous observation in the lighter system 28Si + 112,124Sn. With increasing mass, the properties of hot quasi-projectiles become increasingly influenced by the secondary emission. Thermodynamical observables exhibit no sensitivity to the different number of missing neutrons in the two reactions 40,48Ca + 27Al, thus providing a signal of dynamical emission of neutrons, which can be related to formation of a very neutron-rich low-density region (neck) between the projectile and target.

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M. Veselsky, A. L. Keksis, G. A. Souliotis, K. Wang, E. Bell, D. V. Shetty, M. Jandel, S. J. Yennello, Y. G. Ma. 2008-01-21. Statistical and dynamical aspects in the decay of hot neutron-rich nuclei. https://doi.org/10.1016/j.nuclphysa.2010.02.013%2010.1142%2Fs0218301310015965

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