Radius dependence of elliptic flow in Au + Au non-central collisions at RHIC energy

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Department of Physics, Harbin Institute of Technology, Harbin 150001, China [1 ]
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Kao Neng Wu Li Yu Ho Wu Li | 2006年 / 7卷 / 633-637期
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Non-central Au + Au collisions at root SNN = 200 GeV are studied with the RQMD model. The dependence of elliptic flow on freezeout radius of final particles is analyzed. We find that elliptic flow increases with freezeout radius firstly, and then decreases, with a maximum value at the original size of the surface. The results show the different evolution of pressure gradient in different direction. The method to analyze the pressure gradient with mean radial velocity is used.
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