Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25MeV/nucleon Ca+Ca by Quantum Molecular Dynamics Model
YAN Ting-Zhi 1,2, MA Yu-Gang1, CAI Xiang-Zhou1, FANG De-Qing1, LU Guang-Cheng1, SHEN Wen-Qing1, TIAN Wen-Dong1, WANG Hong-Wei1, WANG Kun
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 100080
Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25MeV/nucleon Ca+Ca by Quantum Molecular Dynamics Model
YAN Ting-Zhi 1,2;MA Yu-Gang1;CAI Xiang-Zhou1;FANG De-Qing1;LU Guang-Cheng1;SHEN Wen-Qing1;TIAN Wen-Dong1;WANG Hong-Wei1;WANG Kun
1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 100080
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 25MeV/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, v4v22 keeps to be almost independent of rapidity and remains a rough constant of 1/2 for all light fragments.
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 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, v4v22 keeps to be almost independent of rapidity and remains a rough constant of 1/2 for all light fragments.
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]. 中国物理快报, 2007, 24(12): 3388-3391.
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. Chin. Phys. Lett., 2007, 24(12): 3388-3391.
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