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Chinese Physics C> 1997, Vol. 21> Issue(S3) : 63-70 

Development of Central Collective Flow in 100 MeY/u Au+Au Central Collisions

  •  1. Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China;

  •  2. Shanghai Institute of Nuclear Study, The Chinese Academy of Sciences, Shanghai, China

  • Using the QMD model, the time evolution of the Au-h Au system at 100 MeV/u has been studied. For very central collisions, the conditions for freeze-out and how the different physical quantities approach equilibrium are investigated. The calculation results show that for 100 MeY/u Au+Au b=0 fm, the maximum density can reach 1.6ρ0, after which the system expands to a low density region. A position correlated central flow develops during the expansion stage. Through study of the two-particle relative momentum spectrum, it is possible to separate the central flow from random thermal motion. The dependence of this central flow on the equation of state (EOS) is also discussed.
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Xi Hongfei, Shen Wenqing, Zhu Yongtai, Jin Genming and Wei Zhiyong. Development of Central Collective Flow in 100 MeY/u Au+Au Central Collisions[J]. Chinese Physics C, 1997, 21(S3): 63-70.
Xi Hongfei, Shen Wenqing, Zhu Yongtai, Jin Genming and Wei Zhiyong. Development of Central Collective Flow in 100 MeY/u Au+Au Central Collisions[J]. Chinese Physics C, 1997, 21(S3): 63-70. shu
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Received: 1996-06-26
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    Supported by the National Natural Science Foundation of China.

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Development of Central Collective Flow in 100 MeY/u Au+Au Central Collisions

  • 1. Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, China;
  • 2. Shanghai Institute of Nuclear Study, The Chinese Academy of Sciences, Shanghai, China
  • Received Date: 1996-06-26
Fund Project:  Supported by the National Natural Science Foundation of China.

Abstract: Using the QMD model, the time evolution of the Au-h Au system at 100 MeV/u has been studied. For very central collisions, the conditions for freeze-out and how the different physical quantities approach equilibrium are investigated. The calculation results show that for 100 MeY/u Au+Au b=0 fm, the maximum density can reach 1.6ρ0, after which the system expands to a low density region. A position correlated central flow develops during the expansion stage. Through study of the two-particle relative momentum spectrum, it is possible to separate the central flow from random thermal motion. The dependence of this central flow on the equation of state (EOS) is also discussed.

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