中国物理B ›› 2005, Vol. 14 ›› Issue (12): 2458-2466.doi: 10.1088/1009-1963/14/12/015

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Azimuthal distributions of final-state particles and fragments and transverse structure of emission source in high-energy nucleus--nucleus collisions

刘福虎1, 段麦英1, 马引群2   

  1. (1)Department of Physics, Shanxi University,Taiyuan 030006, China; (2)Department of Physics, Taiyuan Terchers College, Taiyuan 030001, China;Department of Nuclear Physics, China Institute of Atomic Energy,Beijing 102413, China
  • 收稿日期:2005-03-24 修回日期:2005-05-16 出版日期:2005-12-20 发布日期:2005-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10275042 and 10475054),the Shanxi Provincial Natural Science Foundation (Grant No 20021006), and the Shanxi Provincial Foundation for Returned Overseas Scholars.

Azimuthal distributions of final-state particles and fragments and transverse structure of emission source in high-energy nucleus--nucleus collisions

Liu Fu-Hu (刘福虎)a, Ma Yin-Qun (马引群)bc, Duan Mai-Ying (段麦英)a   

  1. a Department of Physics, Shanxi University, Taiyuan 030006, China; b Department of Physics, Taiyuan Terchers College, Taiyuan 030001, Chinac Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
  • Received:2005-03-24 Revised:2005-05-16 Online:2005-12-20 Published:2005-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10275042 and 10475054),the Shanxi Provincial Natural Science Foundation (Grant No 20021006), and the Shanxi Provincial Foundation for Returned Overseas Scholars.

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摘要： The azimuthal distributions of final-state particles and fragments produced in high-energy nucleus--nucleus collisions are described by a modified multisource ideal gas model which contains the expansions and movements of the emission sources. The transverse structures of the sources are given in the transverse plane by momentum components p_x and p_y,and described by parameters in the model. The results of the azimuthal distributions, calculated by the Monte Carlo method, are in good agreement with the experimental data in nucleus--nucleus collisions at high energies.

关键词: high-energy nucleus--nucleus collisions, final-state particles and fragments, azimuthal distributions, transverse structure of emission source

Abstract: The azimuthal distributions of final-state particles and fragments produced in high-energy nucleus--nucleus collisions are described by a modified multisource ideal gas model which contains the expansions and movements of the emission sources. The transverse structures of the sources are given in the transverse plane by momentum components $p_x$ and $p_y$, and described by parameters in the model. The results of the azimuthal distributions, calculated by the Monte Carlo method, are in good agreement with the experimental data in nucleus--nucleus collisions at high energies.

Key words: high-energy nucleus--nucleus collisions, final-state particles and fragments, azimuthal distributions, transverse structure of emission source

中图分类号:  (Multifragment emission and correlations)

  • 25.70.Pq
25.70.Mn (Projectile and target fragmentation) 25.75.Ld (Collective flow) 27.80.+w (190 ≤ A ≤ 219)