166 research outputs found
Non-congruence of liquid-gas phase transition of asymmetric nuclear matter
We first explore the liquid-gas mixed phase in a bulk calculation, where two
phases coexist without the geometrical structures. In the case of symmetric
nuclear matter, the system behaves congruently, and the Maxwell construction
becomes relevant. For asymmetric nuclear matter, on the other hand, the phase
equilibrium is no more attained by the Maxwell construction since the liquid
and gas phases are non-congruent; the particle fractions become completely
different with each other. One of the origins of such non-congruence is
attributed to the large symmetry energy.
Subsequently we explore the charge-neutral nuclear matter with electrons by
fully applying the Gibbs conditions to figure out the geometrical (pasta)
structures in the liquid-gas mixed phase. We emphasize the effects of the
surface tension and the Coulomb interaction on the pasta structures. We also
discuss the thermal effects on the pasta structures.Comment: proceedings of PANIC 201
Liquid-gas mixed phase in nuclear matter at finite temperature
We explore the geometrical structure of Liquid-gas (LG) mixed phase which is
relevant to nuclear matter in the crust region of compact stars or supernovae.
To get the equation of state (EOS) of the system, the Maxwell construction is
found to be applicable to symmetric nuclear matter, where protons and neutrons
behave simultaneously. For asymmetric nuclear matter, on the other hand, the
phase equilibrium can be obtained by fully solving the Gibbs conditions since
the components in the L and G phases are completely different. We also discuss
the effects of surface and the Coulomb interaction on the mixed phase.Comment: Contributed talk at the INPC 2010 at Vancouve
On the IMF Multiplicity in Au+Au Reactions
Intermediate mass fragment (IMF) multiplicity has been investigated for Au+Au
reactions at incident energies of 100, 250 and 400 MeV/A. From the analysis of
the impact-parameter-dependence of the IMF multiplicity using our QMD plus
statistical evaporation model, we found that 1) statistical decay process
modifies the results greatly, and 2) the Fermi motion plays a role to increase
the IMF multiplicity for whole impact-parameter range.Comment: 9pages, Latex is used, 2 Postscript figures are available by request
from [email protected]
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