类Li氧等离子体光谱模拟  

Spectrum simulation of Li-like oxygen plasma

作　　者：邓邦林[1] 蒋刚[1] 王巍[1] 

机构地区：[1]四川大学原子与分子物理研究所,成都610065

出　　处：《强激光与粒子束》2009年第8期1230-1234,共5页High Power Laser and Particle Beams

基　　金：高温高密度等离子体国家级重点实验室资助课题;国家高技术发展计划项目

摘　　要：在FAC程序包中碰撞辐射模型的基础上,模拟出了L壳层的类Li氧等离子体的X射线辐射光谱,其中包括了单、双和三离子模型。经过分析得出,除了碰撞激发以外,级联效应和其它的动力学过程(如:碰撞电离、双电子复合、辐射复合以及共振激发等)对光谱的贡献都是不能被忽略的。并分析了类Li氧等离子体各动力学过程与温度和光谱相对强度之间的关系,分析结果表明X射线光谱的强度能及时响应等离子体温度的变化。Based on the collisional radiative model from the flexible atomic code, X-ray emission spectra for L-shell of Li-like oxygen plasma consisting of three kinds of oxygen ions （Li-like oxygen ion and another two neighboring ions） are simulated. Atomic processes in the model include dielectronic recombination（DR）, radiative recombination（RR）, collisional ionization（CI） and resonance excitation（RE） from the neighbouring ion charge states of the target ion （Li-like oxygen ion）. It is found that DR, RR, CI and RE, other than direct collisional excitation, are very important processes by analyzing the contribution of different atomic processes to the X-ray spectum. In addition, the relationship between X-ray wavelengths, relatively radiative intensity and the e- lectronic temperature can be seen from the spectra, which could be qualitatively used in plasmas diagnostics.

关 键 词：类Li氧 FAC 光谱模拟 双电子复合 辐射复合 

分 类 号：O536[理学—等离子体物理]