Au^(q+)(q=53-47)激光等离子体的辐射复合速率系数  

Radiative recombination rates for laser-created plasmas

作　　者：蔡静[1] 易有根[1,2] 郑志坚[2] 易早 颜君[3] 邱玉波[3] 

机构地区：[1]湖南科技大学物理学院,湘潭411201 [2]中国工程物理研究院高温高密度等离子体物理国家重点实验室,绵阳621900 [3]北京应用物理与计算数学研究所,北京100088

出　　处：《原子与分子物理学报》2009年第3期508-512,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金项目(10275056);湖南省自然科学基金项目(03JJY6003);湖南省教育厅科学基金项目(03C534);湖南省首批新世纪121人才工程

摘　　要：辐射复合过程在超组态碰撞辐射(SCROLL)模型中真实模拟非局域热动力学平衡(non-LTE)高Z材料Au激光等离子体M带谱5f-3d跃迁中各种复杂离子的电离态特性是一个主要过程.基于准相对论多组态Hartree-Fock理论和扭曲波近似,采用组态平均的方法,从头计算了金M带类铁金离子-类锗金离子的辐射复合速率系数,计算过程中包含了大量的单激发和双激发态,结果表明高Z元素由于自电离能级的广泛分布和复杂的级联效应,致使高Z元素的辐射复合系数不同于低Z元素的,其计算结果可用来模拟Au的激光等离子体M带5f-3d跃迁的平均电离度和电荷态分布及能级布居数.Ab initio calculations of the rate coefficients for radiative recombination from Fe-like Au^(53+) to Ge-like Au^(47+) ions are performed based on Cowan's quasi-relativistic multi-configuration Hartree-Fock -Relativistic code and distorted wave approachs. 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 complicate cascade effects, the radiative recombination rate coefficients at higher Z are different from the lower Z's. The results indicate that it is feasible to simulate the average ionized state and charge state distribution in a well characterize highly ionized Au Plasma in the diagnosed electron temperature and density.

关 键 词：辐射复合 类铁金离子-类锗金离子 速率系数 

分 类 号：O53[理学—等离子体物理]