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|Effects of medium on nuclear properties in multifragmentation
|De, J. N.
Samaddar, S. K.
Viñas Gausí, Xavier
Centelles Aixalà, Mario
Mishustin, I. N.
Greiner, Walter, 1935-
|American Physical Society
|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.
|Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevC.86.024606
|It is part of:
|Physical Review C, 2012, vol. 86, p. 024606-1-024606-11
|Appears in Collections:
|Articles publicats en revistes (Física Quàntica i Astrofísica)
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