Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model

SU Qian-Min; MA Yu-Gang; TIAN Wen-Dong; FANG De-Qing; CAI Xiang-Zhou; WANG Kun

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Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model

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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.

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《中国物理快报：英文版》 |2008年第6期|2000-2003|共4页
作者
SU Qian-Min; MA Yu-Gang; TIAN Wen-Dong; FANG De-Qing; CAI Xiang-Zhou; WANG Kun;
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作者单位

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

Graduate School of the Chinese Academy of Sciences, Beijing 100049;

College of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620;

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800;

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正文语种 chi
中图分类物理学;
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Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model

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