Excitation of Ar15+ and Fe23+ for diagnostic application to fusion and astrophysical plasmas
Excitation of Ar15+ and Fe23+ for diagnostic application to fusion and astrophysical plasmas
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Ar15 和 Fe23 的激发，用于聚变和天体物理等离子体的诊断应用
DOI：
10.1088/0953-4075/35/17/309
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Summers
中科院分区：
文献类型：
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作者：
A. Whiteford;N. Badnell;C. Ballance;S. Loch;M G O Mullane;H. Summers
用辐射阻尼和俄歇阻尼的中间耦合坐标系变换R矩阵方法计算了类锂氩和类锂铁的n = 3壳层（不包括1 s3 l3 l '组态）双激发能级间跃迁的电子碰撞激发碰撞强度.碰撞强度也已计算的所有单激发水平之间的过渡到n = 5壳相同的系统。在Ar ~（15+）为5 × 10 ~ 4 -5 × 108 K和Fe ~（23+）为10 ~ 5 - 10 ~ 9 K时，Maxwell平均有效碰撞强度的精度在20%以内。与以前的研究相比，这些结果具有显著提高的精度。这些数据与天体物理学和聚变热等离子体中的软x射线类氦光谱分析有关。我们总结了光谱模拟的新数据的灵敏度，这些光谱模拟与当前光谱分析程序中的实验相匹配。此外，我们提出了一些简短的结果建模使用所提供的数据。
Electron-impact excitation collision strengths for transitions among doubly excited levels up to the n = 3 shell (excluding the 1s 3l3l' configurations) of lithium-like argon and iron have been calculated using a radiation- and Auger-damped, intermediate-coupling frame transformation, R-matrix approach. Collision strengths have also been calculated for transitions between all singly excited levels up to the n = 5 shell for the same systems. The Maxwell-averaged effective collision strengths are estimated to be accurate to within 20% at temperatures 5 × 104–5 × 108 K for Ar15+ and 105–109 K for Fe23+. These results are of substantially improved precision compared to previous studies. The data relate to the analysis of soft x-ray helium-like spectra in both astrophysical and fusion thermal plasmas. We summarize the sensitivity to the new data of the spectral simulations which are matched to experiment in current spectral analysis procedures. Also, we present some brief results of modelling using the presented data.