Títol:
|
Effects of medium on nuclear properties in multifragmentation
|
Autor/a:
|
De, J. N.; Samaddar, S. K.; Viñas Gausí, Xavier; Centelles Aixalà, Mario; Mishustin, I. N.; Greiner, Walter, 1935-
|
Altres autors:
|
Universitat de Barcelona |
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. |
Matèries:
|
-Física nuclear -Astrofísica nuclear -Termodinàmica -Nuclear physics -Nuclear astrophysics -Thermodynamics |
Drets:
|
(c) American Physical Society, 2012
|
Tipus de document:
|
Article Article - Versió publicada |
Publicat per:
|
American Physical Society
|
Compartir:
|
|