Neutron-proton elliptic flow in Au + Au
msra(2009)
摘要
The elliptic flow of neutrons, protons and light complex particles in
reactions of neutron-rich systems at relativistic energies is proposed as an
observable sensitive to the strength of the symmetry term in the equation of
state at supra-normal densities. Preliminary results from a study of the
existing FOPI/LAND data for 197Au + 197Au collisions at 400 A MeV with the
UrQMD model favor a moderately soft symmetry term with a density dependence of
the potential term proportional to (rho/rho_0)^gamma with gamma = 0.9 +- 0.3.
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关键词
equation of state,density dependence,elliptic flow
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