Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model
SU Qian-Min1,2,3, MA Yu-Gang1, TIAN Wen-Dong1, FANG De-Qing1, CAI Xiang-Zhou1, WANG Kun1
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 1000493College of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620
Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model
SU Qian-Min1,2,3;MA Yu-Gang1;TIAN Wen-Dong1;FANG De-Qing1;CAI Xiang-Zhou1;WANG Kun1
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 1000493College of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620
摘要Isoscaling behaviour of the statistical emission fragments from the equilibrated sources with Z=30 and N=30, 33, 36 and 39 is investigated in the framework of the isospin-dependent lattice gas model. The dependences of isoscaling parameters α on source isospin asymmetry, temperature and freeze-out density are studied, and the `symmetry energy' is deduced from isoscaling parameters. The results show that symmetry energy Csym is insensitive to the change of temperature but follows the power-law dependence on the freeze-out density ρ. The effect of strength of asymmetry of nucleon--nucleon interaction potential on the density dependence of the symmetry energy is discussed.
Abstract：Isoscaling behaviour of the statistical emission fragments from the equilibrated sources with Z=30 and N=30, 33, 36 and 39 is investigated in the framework of the isospin-dependent lattice gas model. The dependences of isoscaling parameters α on source isospin asymmetry, temperature and freeze-out density are studied, and the `symmetry energy' is deduced from isoscaling parameters. The results show that symmetry energy Csym is insensitive to the change of temperature but follows the power-law dependence on the freeze-out density ρ. The effect of strength of asymmetry of nucleon--nucleon interaction potential on the density dependence of the symmetry energy is discussed.
SU Qian-Min;;MA Yu-Gang;TIAN Wen-Dong;FANG De-Qing;CAI Xiang-Zhou;WANG Kun. Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model[J]. 中国物理快报, 2008, 25(6): 2000-2003.
SU Qian-Min, , MA Yu-Gang, TIAN Wen-Dong, FANG De-Qing, CAI Xiang-Zhou, WANG Kun. Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model. Chin. Phys. Lett., 2008, 25(6): 2000-2003.
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2008, Vol. 25 
