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

Journal Article · Sat Mar 15 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4869460· OSTI ID:22251843

Xu, He; Yuan, Ping; Cen, Jian-Yong ^[1]; Zhang, Guang-Shu ^[2]

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1. Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gan Su Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070 (China)
2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000 (China)

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.

• OSTI ID: 22251843
• Journal Information: Physics of Plasmas, Vol. 21, Issue 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CLOUDS
ELECTRON DENSITY
LIGHTNING
PLASMA
SPECTRA