Abstract

For accurate electron density diagnostics in the solar transition region, the principle of electron density diagnostics are discussed by lines from Si VIII ion for kappa and Maxwellian distributions By observed line ratio of the Si VIII 1440.50 to 1445.75 Å lines in quiet sun and active region, the electron density is discussed for any observed line ratio, and results are consistent with reported values in literature. The relationships between line ratio and electron density for the kappa and Maxwellian distributions are also discussed, in the case of lower and higher electron density limits, and results indicate that different distributions have no effect on relationships between the line ratio and the electron density at lower or higher electron density limit. This discussion is significant for accurate electron density diagnostics in the solar transition region, which will be important for study on coronal heating and acceleration of solar wind.

中文翻译：

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Si VIII离子对太阳过渡区非Maxwellian分布的电子密度诊断研究

摘要

为了在太阳跃迁区进行准确的电子密度诊断，通过Si VIII离子的κ和麦克斯韦分布的线讨论了电子密度诊断的原理。在安静的太阳和活动区中观察到的Si VIII 1440.50与1445.75Å线的线比，讨论了任何观察到的线比的电子密度，其结果与文献报道的值一致。在上下限电子密度限制的情况下，还讨论了线比与电子密度之间的关系，有关kappa和麦克斯韦分布的结果表明，不同的分布对线比与较低密度下的电子密度之间的关系没有影响或更高的电子密度极限。