Isospin Effect on the Process of Multifragmentation and Dissipation at Intermediate Energy Heavy Ion Collisions

Abstract

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 $N_{imf}$ for the neutron-poor colliding system is always larger than that for the neutron-rich system, while the quadrupole of single particle momentum distribution $Q_{zz}$ for the neutron-poor colliding system is smaller than that of the neutron-rich system for all projectile-target combinations studied at the beam energies from about 50MeV/nucleon to 150MeV/nucleon. Since $Q_{zz}$ depends strongly on isospin dependence of in-medium nucleon-nucleon cross section and weakly on symmetry potential at the above beam energies, it may serve as a good probe to extract the information on the in-medium nucleon-nucleon cross section. The correlation between the multiplicity $N_{imf}$ of intermediate mass fragments and the total numer of charged particles $N_c$ has the behavior similar to $Q_{zz}$, which can be used as a complementary probe to the in-medium nucleon-nucleon cross section.

18 pages, 9 figures

References in corpus (3)

• Nuclear Stopping as A Probe to In-medium Nucleon-nucleon Cross Section in Intermediate Energy Heavy Ion Collisions
• Elliptic flow in heavy ion collisions near the balance energy
• Entrance channel dependence and isospin dependence of preequilibrium nucleon emission in intermediate energy heavy ion collisions

Cited by in corpus (14)

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• Scaling of Anisotropic Flow and Momentum-Space Densities for Light Particles in Intermediate Energy Heavy Ion Collisions
• Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams
• Exploring binding energy and separation energy dependences of HBT strength
• Systematic study of multi-fragmentation in asymmetric colliding nuclei
• Isospin fractionation in the nucleon emissions and fragment emissions in the intermediate energy heavy ion collisions
• Isospin effects on two-particle correlation functions in E/A = 61 MeV 36Ar + 112,124Sn reactions
• Influence of a momentum dependent interaction on the isospin dependence of fragmentation and dissipation in intermediate energy heavy ion collisions
• Probing the Isospin Dependent In-Medium Nucleon-Nucleon Cross Section by Nucleon Emissions
• Influence of medium correction of nucleon nucleon cross section on the fragmentation and nucleon emission
• Probing the isospin dependent mean field and nucleon nucleon cross section in the medium by the nucleon emissions
• Medium influence of the nucleon nucleon cross section on the fragmentation
• Mass independence and asymmetry of the reaction: Multi-fragmentation as an example
• Effects of high-momentum tail of nucleon momentum distribution on initiation of cluster production in heavy-ion collisions at intermediate energies