计算物理 ›› 2008, Vol. 25 ›› Issue (1): 36-42.

• 研究论文 • 上一篇    下一篇

激光线聚焦驱动平面银靶的二维数值模拟

郑无敌, 张国平   

  1. 1. 北京应用物理与计算数学研究所, 北京 100088;
    2. 中国工程物理研究院研究生部, 北京 100088
  • 收稿日期:2006-10-23 修回日期:2007-03-02 出版日期:2008-01-25 发布日期:2008-01-25
  • 作者简介:郑无敌(1971-),男,四川富顺,博士生,从事X光激光理论研究.
  • 基金资助:
    国家高技术863计划资助项目

2D Simulation of an Ag Planar Target Driven by Focus-line Laser

ZHENG Wudi, ZHANG Guoping   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Graduated School of China Academy of Engineering Physics, Beijing 100088, China
  • Received:2006-10-23 Revised:2007-03-02 Online:2008-01-25 Published:2008-01-25

摘要: 介绍新研制的二维非平衡辐射流体力学程序XRL2D的物理方程以及计算方法,并对神光Ⅱ上典型的类镍银X光激光实验条件,用3种ALE计算方法模拟了预主脉冲线聚焦驱动银平面靶的流体运动.几种方法模拟给出的物理图像清晰且相似,类镍离子丰度分布呈弯月形,同实验上XRL场图呈弯月形分布一致.对3种计算方法给出的结果进行了细致的比较分析.

关键词: 数值模拟, ALE方法, 预主脉冲激光打靶, X光激光线聚焦等离子体

Abstract: Physical equations and calculation methods of XRL2D code, a 2D non-equilibrium radiation hydrodynamics code, are introduced. With this code, three different ALE methods are adopted to simulate hydrodynamic behavior of focus-line plasma of an Ag planar target driven by pre-main-pulse laser, which is a typical Ni-like Ag-ray laser experiment on ShenguangⅡ. The methods give similar and clear physical pictures:abundance distribution of Ni-like ion shows a shape of bow which agrees with distribution of XRL intensity in experiment. The methods are compared in detail as well.

Key words: numerical simulation, ALE method, laser-target coupling of pre-main pulses, focus-line plasma of X-Ray laser

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