Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca + Ca by Quantum Molecular Dynamics Model

T. Z. Yan; Y. G. Ma; X. Z. Cai; D. Q. Fang; G. C. Lu; W. Q. Shen; W. D. Tian; H. W. Wang; K. Wang

doi:10.1088/0256-307X/24/12/028

Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca + Ca by Quantum Molecular Dynamics Model

Nuclear Theory 2008-11-26 v1 Nuclear Experiment

Authors: T. Z. Yan , Y. G. Ma , X. Z. Cai , D. Q. Fang , G. C. Lu , W. Q. Shen , W. D. Tian , H. W. Wang , K. Wang

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Abstract

Anisotropic flows ( $v_1$ , $v_2$ , $v_3$ and $v_4$ ) of light fragments up till the mass number 4 as a function of rapidity have been studied for 25 MeV/nucleon $^{40}$ Ca + $^{40}$ Ca at large impact parameters by Quantum Molecular Dynamics model. A phenomenological scaling behavior of rapidity dependent flow parameters $v_n$ (n = 1, 2, 3 and 4) has been found as a function of mass number plus a constant term, which may arise from the interplay of collective and random motions. In addition, $v_4/{v_2}^2$ keeps almost independent of rapidity and remains a rough constant of 1/2 for all light fragments.

Keywords

anisotropic flows quantum molecular dynamics rapidity dependence heavy ion collision phenomenological scaling light fragments

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@article{arxiv.0711.0127,
  title  = {Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca + Ca by Quantum Molecular Dynamics Model},
  author = {T. Z. Yan and Y. G. Ma and X. Z. Cai and D. Q. Fang and G. C. Lu and W. Q. Shen and W. D. Tian and H. W. Wang and K. Wang},
  journal= {arXiv preprint arXiv:0711.0127},
  year   = {2008}
}

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4 pages, 5 figures

Phenomenological Scaling of Rapidity Dependence for Anisotropic Flows in 25 MeV/nucleon Ca + Ca by Quantum Molecular Dynamics Model

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