Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-10-28
Phys.Rev.C77:014302,2008
Physics
Nuclear Physics
Nuclear Theory
21 pages, 29 figures
Scientific paper
10.1103/PhysRevC.77.014302
Thermal properties of asymmetric nuclear matter are studied within a self-consistent thermal model using an isospin and momentum dependent interaction (MDI) constrained by the isospin diffusion data in heavy-ion collisions, a momentum-independent interaction (MID), and an isoscalar momentum-dependent interaction (eMDYI). In particular, we study the temperature dependence of the isospin-dependent bulk and single-particle properties, the mechanical and chemical instabilities, and liquid-gas phase transition in hot asymmetric nuclear matter. Our results indicate that the temperature dependence of the equation of state and the symmetry energy are not so sensitive to the momentum dependence of the interaction. The symmetry energy at fixed density is found to generally decrease with temperature and for the MDI interaction the decrement is essentially due to the potential part. It is further shown that only the low momentum part of the single-particle potential and the nucleon effective mass increases significantly with temperature for the momentum-dependent interactions. For the MDI interaction, the low momentum part of the symmetry potential is significantly reduced with increasing temperature. For the mechanical and chemical instabilities as well as the liquid-gas phase transition in hot asymmetric nuclear matter, our results indicate that the boundary of these instabilities and the phase-coexistence region generally shrink with increasing temperature and is sensitive to the density dependence of the symmetry energy and the isospin and momentum dependence of the nuclear interaction, especially at higher temperatures.
Chen Lie-Wen
Li Bao-An
Ma Hong-Ru
Xu Jun
No associations
LandOfFree
Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-237383