| Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca＋Ca by Quantum Molecular Dynamics Model |
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| 引用本文： | 颜廷志,马余刚,蔡翔舟,方德清,陆广成,沈文庆,田文栋,王宏伟,王鲲.Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca＋Ca by Quantum Molecular Dynamics Model[J].中国物理快报,2007,24(12):3388-3391. |
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| 作者姓名： | 颜廷志 马余刚 蔡翔舟 方德清 陆广成 沈文庆 田文栋 王宏伟 王鲲 |
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| 作者单位： | [1]Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 [2]Graduate School of the Chinese Academy of Sciences, Beijing 100080 |
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| 基金项目： | Supported partially by the National Basic Research Programme of China under Contract No 2007CB815004, the Shanghai Development Foundation from Science and Technology under Grant Nos 06JC14082 and 06QA14062, the National Natural Science Foundation of China under Grant Nos 10535010 and 10775167. |
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| 摘 要： | Anisotropic flows （v1, v2, v3 and v4） of light fragments up to the mass number 4 as a function of rapidity are studied for 25 MeV/nucleon ^40Ca ＋ ^40Ca at large impact parameters by a quantum molecular dynamics model. A phenomenological scaling behaviour of rapidity dependent flow parameters vn （n = 1, 2, 3 and 4） is found as a function of mass number plus a constant term, which may arise from the interplay of collective and random motions. In addition, v4/v2^2 keeps to be almost independent of rapidity and remains a rough constant of 1/2 for all light fragments.
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| 关 键 词： | 分析动态模型 各向异性 流体 现象学 |
| 收稿时间： | 2007-09-17 |
Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25MeV/nucleon Ca+Ca by Quantum Molecular Dynamics Model |
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| YAN Ting-Zhi,MA Yu-Gang,CAI Xiang-Zhou,FANG De-Qing,LUGuang-Cheng,SHEN Wen-Qing,TIAN Wen-Dong,WANG Hong-Wei,WANG Kun.Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25MeV/nucleon Ca+Ca by Quantum Molecular Dynamics Model[J].Chinese Physics Letters,2007,24(12):3388-3391. |
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| Authors: | YAN Ting-Zhi MA Yu-Gang CAI Xiang-Zhou FANG De-Qing LUGuang-Cheng SHEN Wen-Qing TIAN Wen-Dong WANG Hong-Wei WANG Kun |
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| Affiliation: | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800Graduate School of the Chinese Academy of Sciences, Beijing 100080 |
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| Abstract: | Anisotropic flows (v1, v2, v3 and v4) of light fragments up to the mass number 4 as a function of rapidity are studied for 25MeV/nucleon 40Ca + 40Ca at largeimpact parameters by a quantum molecular dynamics model. A phenomenological scaling behaviour of rapidity dependent flow parameters vn (n = 1, 2, 3 and 4) is found as a function of mass number plus a constant term, which may arise from the interplay of collective and random motions. In addition, v4v22 keeps to be almost independent of rapidity and remains arough constant of 1/2 for all light fragments. |
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| Keywords: | 25 75 Ld 24 10 -i 21 60 Ka |
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