Isospin effects on rotational flow in intermediate energy heavy ion collisions
نویسندگان
چکیده
منابع مشابه
Isospin nonequilibrium in heavy-ion collisions at intermediate energies.
We study the equilibration of isospin degree of freedom in intermediate energy heavy-ion collisions using an isospin-dependent BUU model. It is found that there exists a transition from the isospin equilibration at low energies to nonequilibration at high energies as the beam energy varies across the Fermi energy in central, asymmetric heavy-ion collisions. At beam energies around 55 MeV/nucleo...
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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 theoreti...
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Using an isospin-dependent transport model, we have studied the isospin and momentum relaxation times in the heavy residues formed in heavy-ion collisions at intermediate energies. It is found that only at incident energies below the Fermi energy, chemical or thermal equilibrium can be reached before dynamical instability is developed in the heavy residues. Also, the isospin relaxation time is ...
متن کاملIsospin Effect on the Process of Multifragmentation and Dissipation at Intermediate Energy Heavy Ion Collisions
In the simulation of intermediate energy heavy ion collisions by using the isospin dependent quantum molecular dynamics, the isospin effect on the process of multifragmentation and dissipation has been studied. It is found that the multiplicity of intermediate mass fragments Nimf for the neutron-poor colliding system is always larger than that for the neutron-rich system, while the quadrupole o...
متن کاملIsospin dependence of collective flow in heavy-ion collisions at intermediate energies.
Within the framework of an isospin-dependent Boltzmann-Uehling-Uhlenbeck (BUU) model using initial proton and neutron densities calculated from the nonlinear relativistic mean-field (RMF) theory, we compare the strength of transverse collective flow in reactions Ca + Fe and Cr + Ni, which have the same mass number but different neutron/proton ratios. The neutron-rich system (Ca+Fe) is found to ...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2000
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.61.067601