Directed and Elliptic Flow in 112Sn+112Sn Collisions
ZHANG Hu-Yong1, MA Yu-Gang1, YU Li-Ping1, SHEN Wen-Qing1,2, CAI Xiang-Zhou1, FANG De-Qing1, ZHONG Chen1, HAN Ding-Ding3
1Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Ningbo University, Ningbo 315211
3Department of Electronic Engineering, East China Normal University, Shanghai 200062
Directed and Elliptic Flow in 112Sn+112Sn Collisions
1Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Ningbo University, Ningbo 315211
3Department of Electronic Engineering, East China Normal University, Shanghai 200062
Abstract： The directed and elliptic flow in collisions of 112Sn+112Sn at energies from 35 to 90 MeV/nucleon are studied in an isospin-dependent quantum molecule dynamics model. With increasing incident energy, the directed flow rises from negative to positive. Its magnitude depends on the nuclear equation of state (EOS). However, the elliptic flow decreases with increasing incident energy and its magnitude is not very sensible to EOS. Systematic studies of the impact parameter dependence and the cluster mass dependence are also performed. The study of directed flow at intermediate energies thus provides a means of extracting the information on the nuclear equation of state.
2001, Vol. 18 
