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Title: Effects of medium on nuclear properties in multifragmentation
Author: De, J. N.
Samaddar, S. K.
Viñas Gausí, Xavier
Centelles Aixalà, Mario
Mishustin, I. N.
Greiner, Walter, 1935-
Keywords: Física nuclear
Astrofísica nuclear
Nuclear physics
Nuclear astrophysics
Issue Date: 2012
Publisher: American Physical Society
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review C, 2012, vol. 86, p. 024606-1-024606-11
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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