闪电(连接器)
离子
等离子体
沟道等离子体
丰度(生态学)
频道(广播)
原子物理学
环境科学
物理
核物理学
计算机科学
电信
热力学
生物
功率(物理)
量子力学
渔业
作者
Feng Wei,Xiaozhi Shen,Ping Yuan,Tingting An,Yingying An,Mengle Su
出处
期刊:Journal of The Optical Society of America B-optical Physics
[The Optical Society]
日期:2024-07-30
卷期号:41 (9): 2033-2033
摘要
Based on the multi-configuration Dirac-Fock (MCDF) method, accurate atomic spectral data were calculated and used for plasma spectral diagnostics and line identification. The formation of multiplet emission lines due to the proximity of the upper and lower levels of the transition is common. For multiplet analysis, some software is often used for line separation; however, this is a rather inaccurate process. In this study, the CF-LIBS and Saha-Boltzmann methods for multiplet emission lines are derived, which allow the use of multiplet and singlet emission lines. This CF-LIBS and Saha-Boltzmann method for multiplet is used in lightning plasma spectroscopy for obtaining particle abundances in the lightning channel. It was found that there is a dependence between the intercept, ξ , of the Boltzmann plot and the ionic abundance, η , of the plasma, and that the differences in η in different particles are attributed to the varying amounts of nitrogen and oxygen in the air. Then, the final measured η -data indicate that N II ions are the most abundant in this lightning, with N III and O III ions being extremely rare. The presently reported data are in better agreement with some verification data and other measurements.
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