Thermalization,Expansion, and Radial Flow in HIC

Zeng Xianghua; Ge Lingxiao

Chinese Physics C> 1997, Vol. 21> Issue(S2) : 47-52

Thermalization,Expansion, and Radial Flow in HIC

Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, China

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Abstract：
The thermalization, expansion, and radial flow in the processes of intermediate energy heavy ion collisions are discussed via the BUU model. From the calculation of quadrupole momenta and density distributions, it is shown that the global equilibrium is reached for the collision system at lower energies, while at higher energies only the local equilibrium could be reached. Using the Skyrme interaction, the influences of radial flow on the equation of state are also studied, which shows that radial expansion flow Is sensitive to the effective mass, but insensitive to the incompressibility.
- heavy ion collision ,
- thermalization ,
- EOS ,
- radial expansion
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Zeng Xianghua and Ge Lingxiao. Thermalization,Expansion, and Radial Flow in HIC[J]. Chinese Physics C, 1997, 21(S2): 47-52.

Zeng Xianghua and Ge Lingxiao. Thermalization,Expansion, and Radial Flow in HIC[J]. Chinese Physics C, 1997, 21(S2): 47-52. shu

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Received: 1995-12-27

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Supported by the National Natural Science Foundation of China and LWTZ-1298, the Chinese Academy of Sciences.

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沈阳化工大学材料科学与工程学院沈阳 110142

Thermalization,Expansion, and Radial Flow in HIC

Zeng Xianghua
Ge Lingxiao

Institute of Modem Physics, Chinese Academy of Sciences, Lanzhou, China

Received Date: 1995-12-27

Fund Project: Supported by the National Natural Science Foundation of China and LWTZ-1298, the Chinese Academy of Sciences.

Abstract: The thermalization, expansion, and radial flow in the processes of intermediate energy heavy ion collisions are discussed via the BUU model. From the calculation of quadrupole momenta and density distributions, it is shown that the global equilibrium is reached for the collision system at lower energies, while at higher energies only the local equilibrium could be reached. Using the Skyrme interaction, the influences of radial flow on the equation of state are also studied, which shows that radial expansion flow Is sensitive to the effective mass, but insensitive to the incompressibility.