Modification of surface energy in nuclear multifragmentation

Abstract

Within the statistical multifragmentation model we study modifications of the surface and symmetry energy of primary fragments in the freeze-out volume. The ALADIN experimental data on multifragmentation obtained in reactions induced by high-energy projectiles with different neutron richness are analyzed. We have extracted the isospin dependence of the surface energy coefficient at different degrees of fragmentation. We conclude that the surface energy of hot fragments produced in multifragmentation reactions differs from the values extracted for isolated nuclei at low excitation. At high fragment multiplicity, it becomes nearly independent of the neutron content of the fragments.

11 pages with 13 figures

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• Sensitivity study of experimental measures for the nuclear liquid-gas phase transition in the statistical multifragmentation model
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• Nuclear condensation and the equation of state of nuclear matter
• Nuclear condensation and symmetry energy of dilute nuclear matter: an S-matrix approach
• Theoretical Study of Isotope Production in The Peripheral Heavy-ion Collision 136Xe + Pb at 1 GeV/nucleon
• Mass distributions for nuclear disintegration from fission to evaporation
• The effects of medium on nuclear properties in multifragmentation
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