Elliptic flow in intermediate energy heavy ion collisions and n-n interaction and in-medium cross sections

Journal Article · Thu Nov 02 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2398862· OSTI ID:20891744

Zhuxia, Li; Yingxun, Zhang ^[1]

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1. Institute of Atomic Energy, P.O. Box 275(18) Beijing 102413, Beijing (China)

The elliptic flow for Z {<=} 2 particles in heavy ion collisions at energies from several tens to several hundreds MeV per nucleon is investigated by means of transport model,i.e. a new version of the Improved Quantum Molecular Dynamics model (ImQMD05), and compared with experiment results. By applying different Skyrme interactions in transport calculations we have studied the influence of nuclear equation of state(EOS) on the elliptic flow. We find a soft equation of state is required for elliptic flow in intermediate energy heavy ion collisions. The density and energy dependence of in-medium nucleon-nucleon cross sections(NNCS) are studied through the elliptic flow and the nuclear stopping in intermediate energy heavy ion collisions. At low energies, the behavior of in-medium NNCS is similar with phenomenological expression as well as the effective mass scaling, but at higher energies in-medium NNCS are enhanced compared with free ones.

• OSTI ID: 20891744
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 865; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
EFFECTIVE MASS
ENERGY DEPENDENCE
EQUATIONS OF STATE
HEAVY ION REACTIONS
MEV RANGE 100-1000
MOLECULAR DYNAMICS METHOD
NUCLEON-NUCLEON INTERACTIONS
SKYRME POTENTIAL
TRANSPORT THEORY