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The changes on physical characteristics of lightning discharge plasma during individual return stroke process

Journal

Physics of Plasms

Authors

He Xu,Ping Yuan,Jian-Yong Cen,Guang-Shu Zhang

Year

2014

Volume

21

Issue

3

Pages

33512

Corresponding Author

Xu, H

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Keywords

NM; Diagnostics; Spectra; Region

Abstract

A cloud-to-ground lightning with six return strokes has been recorded with a slit-less spectrograph in Qinghai province. According to the spectra of return strokes without continuous current, the electron density, the channel temperature, and the gas pressure have been calculated. Then, the correlativity of these parameters has been analyzed. The results indicate that the total intensity of spectra is positive correlated to the intensity of spectral line, they both decrease with time rapidly; furthermore, the channel temperature and the gas pressure decrease with time slowly in the similar trends. (C) 2014 AIP Publishing LLC.
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