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arXiv · 0802.0664

Nuclear expansion and symmetry energy of hot nuclei

D. V. Shetty·G. A. Souliotis·S. Galanopoulos·Z. Kohley·S. N. Soisson·B. C. Stein·S. Wuenschel·S. J. Yennello
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Abstract

The decrease in the symmetry energy of hot nuclei populated in $^{58}$Ni + $^{58}$Ni, $^{58}$Fe + $^{58}$Ni and $^{58}$Fe + $^{58}$Fe reactions at beam energies of 30, 40, and 47 MeV/nucleon, as a function of excitation energy is studied. It is observed that this decrease is mainly a consequence of increasing expansion or decreasing density rather than the increasing temperature. The results are in good agreement with the recently reported microscopic calculation based on the Thomas-Fermi approach. An empirical relation to study the symmetry energy of finite nuclei in various mass region is proposed.

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D. V. Shetty, G. A. Souliotis, S. Galanopoulos, Z. Kohley, S. N. Soisson, B. C. Stein, S. Wuenschel, S. J. Yennello. 2008-02-05. Nuclear expansion and symmetry energy of hot nuclei. https://doi.org/10.1088/0954-3899%2F36%2F7%2F075103

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