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中国物理学会期刊

Au激光等离子体的双电子复合速率系数

CSTR: 32037.14.aps.51.2740

Dielectronic recombination from Fe like Au^53+ to Ga like Au^47+ ions*

CSTR: 32037.14.aps.51.2740
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  • 基于准相对论多组态HartreeFock理论和扭曲波近似,采用组态平均的方法,从头计算了类铁金离子类镓金离子的双电子复合速率系数,计算中包含了大量稠密的自电离能级,由于宽广的自电离能级分布和极其复杂的级联效应,造成高Z材料Au的双电子复合速率系数不同于低Z元素的特征,与现有文献的类镍金离子比较,结果表明,在“神光Ⅱ”实验装置诊断的电子温度约为2keV,电子密度约为6×1021cm-3,Au激光等离子体不同理论之间的双电子复合速率系数误差不到10%.这对于使用超组态碰撞辐射模型模拟Au的激光等离子体M带细致

     

    Ab initio calculations of the rate coefficients for dielectronic recombination from Felike Au53+ to Galike Au48+ ions are performed based on Cowan's quasirelativistic multiconfiguration HartreeFockRelativistic code and distorted wave approaches. A large number of single excited states and doublyexcited states are included in the present calculation. Because of the extensive distribution of autoionization state energy levels and complicated cascade effects, the dielectronic recombination rate coefficients at higher Z are different from those at lower Z's. The results indicate that the error between our work and other theories is less then 10% in the diagnosed electron temperature and density. It is feasible to simulate the average ionized state and charge state distributions in a well characterized highly ionized Au plasma.

     

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