EQUATION OF STATE OF ASYMMETRIC NUCLEAR MATTER WITH GOGNY AND COULOMB INTERACTIONS

The equation of state of the asymmetric nuclear matter is calculated with the Gogny D1 effective density-dependent nucleon-nucleon interaction and the Coulomb interaction in the framework of the finite-temperature HF method with the rearrangement term. The dependence of the thermodynamical properties such as the critical temperature of the liquid-gas phase transition, the chemical potential, the compression modulus and the entropy on the Coulomb interaction in nuclear matter is treated by using a shielded two-body Coulomb potential and this method has been found to be a reasonable and effective approach.

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Isospin Physics in Heavy-Ion Collisions at Intermediate Energies

International Journal of Modern Physics E ◽

10.1142/s0218301398000087 ◽

1998 ◽

Vol 07 (02) ◽

pp. 147-229 ◽

Cited By ~ 302

Author(s):

Bao-An Li ◽

Che Ming Ko ◽

Wolfgang Bauer

Keyword(s):

Equation Of State ◽

Nuclear Matter ◽

Cross Sections ◽

Heavy Ion Collisions ◽

Transport Model ◽

Transient State ◽

Heavy Ion ◽

Nucleon Nucleon ◽

Asymmetric Nuclear Matter ◽

Ion Collisions

In nuclear collisions induced by stable or radioactive neutron-rich nuclei a transient state of nuclear matter with an appreciable isospin asymmetry as well as thermal and compressional excitation can be created. This offers the possibility to study the properties of nuclear matter in the region between symmetric nuclear matter and pure neutron matter. In this review, we discuss recent theoretical studies of the equation of state of isospin-asymmetric nuclear matter and its relations to the properties of neutron stars and radioactive nuclei. Chemical and mechanical instabilities as well as the liquid-gas phase transition in asymmetric nuclear matter are investigated. The in-medium nucleon-nucleon cross sections at different isospin states are reviewed as they affect significantly the dynamics of heavy ion collisions induced by radioactive beams. We then discuss an isospin-dependent transport model, which includes different mean-field potentials and cross sections for the proton and neutron, and its application to these reactions. Furthermore, we review the comparisons between theoretical predictions and available experimental data. In particular, we discuss the study of nuclear stopping in terms of isospin equilibration, the dependence of nuclear collective flow and balance energy on the isospin-dependent nuclear equation of state and cross sections, the isospin dependence of total nuclear reaction cross sections, and the role of isospin in preequilibrium nucleon emissions and subthreshold pion production.

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Equation of state of asymmetric nuclear matter using re-projected nucleon–nucleon potentials

Journal of Physics G Nuclear and Particle Physics ◽

10.1088/1361-6471/aabbb7 ◽

2018 ◽

Vol 45 (6) ◽

pp. 065101 ◽

Cited By ~ 2

Author(s):

Z Asadi Aghbolaghi ◽

M Bigdeli

Keyword(s):

Equation Of State ◽

Nuclear Matter ◽

Nucleon Nucleon ◽

Asymmetric Nuclear Matter

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NUCLEON-NUCLEON CROSS SECTIONS IN ISOSPIN ASYMMETRIC NUCLEAR MATTER

International Journal of Modern Physics E ◽

10.1142/s0218301310016211 ◽

2010 ◽

Vol 19 (08n09) ◽

pp. 1788-1793

Author(s):

HONGFEI ZHANG ◽

JIANMIN DONG ◽

WEI ZUO ◽

UMBERTO LOMBARDO

Keyword(s):

Nuclear Matter ◽

Cross Sections ◽

Nucleon Nucleon ◽

Density Region ◽

Proton Proton ◽

Asymmetric Nuclear Matter ◽

Hartree Fock ◽

Nucleon Nucleon Interaction ◽

Three Body ◽

Neutron Cross Sections

The in medium nucleon-nucleon (NN) cross sections in isospin asymmetric nuclear matter at various densities are investigated in the framework of Brueckner-Hartree-Fock theory with the Bonn B two-body nucleon-nucleon interaction supplemented with a new version microscopic three-body force (TBF). The TBF depresses the amplitude of cross sections at high density region. At low densities, the proton-proton and neutron-neutron cross sections decrease while the proton-neutron one increases as the asymmetry increases. But the sensitivity of the NN cross sections to the isospin asymmetry are reduced with the increasing density.

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