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Effects of medium on nuclear properties in multifragmentation
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In multifragmentation of hot nuclear matter, properties of fragments embedded in a soup of nucleonic gas and other fragments should be modified as compared with isolated nuclei. Such modifications are studied within a simple model where only nucleons and one kind of heavy nuclei are considered. The interaction between different species is described with a momentum-dependent two-body potential whose parameters are fitted to reproduce properties of cold isolated nuclei. The internal energy of heavy fragments is parametrized according to a liquid-drop model with density- and temperature-dependent parameters. Calculations are carried out for several subnuclear densities and moderate temperatures, for isospin-symmetric and asymmetric systems. We find that the fragments get stretched due to interactions with the medium and their binding energies decrease with increasing temperature and density of nuclear matter.
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DE, J. N., et al. Effects of medium on nuclear properties in multifragmentation. Physical Review C. 2012. Vol. 86, num. 024606-1-024606-11. ISSN 0556-2813. [consulted: 19 of August of 2026]. Available at: https://hdl.handle.net/2445/45424