类Li氧等离子体光谱模拟
Spectrum simulation of Li-like oxygen plasma
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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。Abstract: 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 electronic temperature can be seen fro
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