中国物理B ›› 2002, Vol. 11 ›› Issue (8): 795-798.doi: 10.1088/1009-1963/11/8/308

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L-shell absorption measurement and simulation of x-ray-heated constrained material

李家明1, 颜君2, 刘红杰3, 张保汉3, 杨国洪3, 李军3, 张继彦3, 杨家敏3   

  1. (1)Centre of Atomic and Molecular Sciences, Tsinghua university, Beijing 100084, China; (2)Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; (3)Research Centre of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2001-12-03 修回日期:2002-01-11 出版日期:2002-08-12 发布日期:2005-06-12
  • 基金资助:
    Project supported by the Youth Science and Technology Foundation of Sichuan Province.

L-shell absorption measurement and simulation of x-ray-heated constrained material

Liu Hong-Jie (刘红杰)a, Zhang Bao-Han (张保汉)a, Yang Guo-Hong (杨国洪)a, Li Jun (李军)a, Zhang Ji-Yan (张继彦)a, Yang Jia-Min (杨家敏)a, Yan Jun (颜君)b, Li Jia-Ming (李家明)c    

  1. a Research Centre of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; b Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; c Centre of Atomic and Molecular Sciences, Tsinghua university, Beijing 100084, China
  • Received:2001-12-03 Revised:2002-01-11 Online:2002-08-12 Published:2005-06-12
  • Supported by:
    Project supported by the Youth Science and Technology Foundation of Sichuan Province.

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摘要： Using the newly-designed multi-layered target, we obtain a homogeneous Al sample plasma at high density, low electron temperature, and in near local thermodynamic equilibrium. L-shell resonance absorption lines of Li-like and Be-like ions, as well as satellites are clearly observed. Transition arrays such as 2s－3p, 2s2－2s3p and 2s2p－2p3p are identified. We present the calculation method based on the unresolved transition array model, and we compare the measured transmission spectrum with the calculated results. The electron temperature of the constrained sample plasma is determined to be 34eV with a variation of ±2eV.

关键词: L-shell absorption, photoexcitation photoionization, inverse bremsstrahlung

Abstract: Using the newly-designed multi-layered target, we obtain a homogeneous Al sample plasma at high density, low electron temperature, and in near local thermodynamic equilibrium. L-shell resonance absorption lines of Li-like and Be-like ions, as well as satellites are clearly observed. Transition arrays such as 2s－3p, 2s2－2s3p and 2s2p－2p3p are identified. We present the calculation method based on the unresolved transition array model, and we compare the measured transmission spectrum with the calculated results. The electron temperature of the constrained sample plasma is determined to be 34eV with a variation of ±2eV.

Key words: L-shell absorption, photoexcitation photoionization, inverse bremsstrahlung

中图分类号:  (Emission, absorption, and scattering of electromagnetic radiation ?)

  • 52.25.Os
52.25.Kn (Thermodynamics of plasmas) 52.25.Jm (Ionization of plasmas)