| 重离子碰撞中多源理想气体模型与同位旋依赖的量子分子动力学模型在25AMeV/n能量下计算结果的比较 |
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| 引用本文： | 孙彦,孙祝.重离子碰撞中多源理想气体模型与同位旋依赖的量子分子动力学模型在25AMeV/n能量下计算结果的比较[J].晋中学院学报,2007,24(3):45-52,97. |
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| 作者姓名： | 孙彦 孙祝 |
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| 作者单位： | 山西大同大学物理与电子科学学院,山西,大同,037009 |
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| 摘 要： | 应用多源理想气体模型（MSIG）的蒙特卡罗方法，计算25AMeV能量下，碰撞参数较大时（b=7—10fm），^86Kr-^124Sn碰撞产生的轻碎片的几种分布．将MSIG模型的计算结果与同位旋依赖的量子分子动力学模型（IDQMD）的计算结果进行比较，发现二者得到的模动量分布定性地符合，动量分量分布和方位角分布符合得很好，椭圆流和4阶动量各向异性流对模动量的依赖关系基本符合．
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| 关 键 词： | 多源理想气体模型 横动量 方位角分布 |
| 文章编号： | 1673-1808（2007）03-0045-08 |
| 修稿时间： | 2007-04-02 |
Comparision of Calculated Results from MSIG Model with That from IDQMD Model in Heavy-ion Collision at 25 MeV/nucleon |
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| SUN Yan,SUN Zhu.Comparision of Calculated Results from MSIG Model with That from IDQMD Model in Heavy-ion Collision at 25 MeV/nucleon[J].Journal of Jinzhong University,2007,24(3):45-52,97. |
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| Authors: | SUN Yan SUN Zhu |
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| Institution: | School of Physics and Electronic Science, Datong University, Datong, 037009, China |
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| Abstract: | Using Monte Carlo method,we have compared the calculated results of distribution for light fragments(A=1-4) produced in reactions 86Kr-124Sn at 25 MeV/nucleon and b=7-10 fm from a multisource ideal gas(MSIG) model with that from Isospin-Dependent Quantum Molecular Dynamics(IDQMD) model.It shows that the MSIG model can reasonably describe the IDQMD-predicted results for the azimuthal and px distributions and the transverse momentum dependence of elliptic flow v2 and fourth-order anisotropic flow v4 but can only qualitatively describe the transverse momentum spectra. |
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| Keywords: | multisource ideal gas model transerse momentum azimuthal distribution |
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