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闪电放电过程的近红外光谱及温度沿放电通道的演化特征
瞿海燕; 袁萍; 张华明; 郄秀书
2012-08
Source Publication地球物理学报
ISSN0001-5733
Volume55Issue:8Pages:2508-2513
Contribution Rank2
Other Abstract

The near-infrared spectra in the range of 760970nm for lightning discharge processes are obtained by using a slit-less infrared spectrograph on Chinese Shandong plateau. According to the spectra analysis, it shows that the near-infrared spectrum is mainly the radiation from the latter of the discharge peak current, and the line spectra of neutral nitrogen and oxygen atoms is the main spectra of the separation spectrum. Furthermore, the evolution characteristic of the channel plasma temperature and the total intensity of spectra along the stroke channel during near-infrared radiation are discussed for the first time. The results show that the channel temperature decreases to about 16,000K compared with the stage of return stroke current rise to peak; there is little difference for spectral structure and channel temperature of different lightning, which reflects the characteristics of plasma channel in the recombined phase;the

channel temperature and the total intensity of spectra along the stroke channel show a tiny tend of monotonic change for cloud-to-ground lightning, and it is the maximum near the ground; there is non-monotonic varied between them in cloud lightning, and the channel temperature and the total intensity of spectra are suddenly changed in the tortuous positions , branches and crunodes of the lightning channel.

KeywordLightning Discharge Near-infrared Spectra Channel Temperature Total Intensity Of Spectra
Subject Area其他
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.las.ac.cn/handle/12502/5631
Collection中国科学院兰州文献情报中心_科技咨询服务部
Recommended Citation
GB/T 7714
瞿海燕,袁萍,张华明,等. 闪电放电过程的近红外光谱及温度沿放电通道的演化特征[J]. 地球物理学报,2012,55(8):2508-2513.
APA 瞿海燕,袁萍,张华明,&郄秀书.(2012).闪电放电过程的近红外光谱及温度沿放电通道的演化特征.地球物理学报,55(8),2508-2513.
MLA 瞿海燕,et al."闪电放电过程的近红外光谱及温度沿放电通道的演化特征".地球物理学报 55.8(2012):2508-2513.
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