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Evolution Characteristics of electromagnetic power radiated in lightning diacharge processes


Journal

Spectroscopy and spectral analysis

Authors

Zhao JC,Yuan P,Cen JY,Li YJ,Wang J.

Year

2015

Volume

35

Issue

6

Pages

1474-1478

Corresponding Author

Yuan, P

Request Full Text

yuanp@nwnu.edu.cn

Keywords

Lightning spectra; Electromagnetic power; Luminance of the channel; Conductivity

Abstract

Combining the spectra of could-to-ground lightning discharge processes obtained by a slit-less spectrograph with synchronous electric field information, the temperature, the conductivity, the current peak, electromagnetic power peak and the luminance of the discharge channel are calculated. The values are in a normal range reported by references. The correlation among cut-off time before a subsequent return stroke, the luminance and electromagnetic power peak of the channel is discussed. The change trends of the conductivity, the current peak and electromagnetic power peak are also investigated. The results show when cut-off time is long, neutralized charges will grow, the current will rise and electromagnetic power radiated from the channel will increase. When the conductivity and the peak of the electric field change increase simultaneously, the current in the channel will rise and electromagnetic power radiated from the channel will be greater. This work will provide some references for calculating optical and electromagnetic energy radiated by lightning discharge processes.