Open AccessMeasuring Method for Lightning Channel Temperature
Author(s) -
X. Li,
J. Zhang,
Lin Chen,
Qi Xue,
Ruoxu Zhu
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep33906
Subject(s) - lightning (connector) , impulse (physics) , spectral line , channel (broadcasting) , intensity (physics) , infrared , ball lightning , spectroscopy , computational physics , range (aeronautics) , atomic physics , materials science , physics , optics , computer science , telecommunications , thermodynamics , nuclear physics , plasma , quantum mechanics , astronomy , composite material , power (physics)
In this paper, we demonstrate the temperature of lightning channel utilizing the theory of lightning spectra and the model of local thermodynamic equilibrium (LTE). The impulse current generator platform (ICGS) was used to simulate the lightning discharge channel, and the spectral energy of infrared spectroscopy (930 nm) and the visible spectroscopy (648.2 nm) of the simulated lightning has been calculated. Results indicate that the peaks of luminous intensity of both infrared and visible spectra increase with the lightning current intensity in range of 5–50 kA. Based on the results, the temperature of the lightning channel is derived to be 6140.8–10424 K. Moreover, the temperature of the channel is approximately exponential to the lightning current intensity, which shows good agreement with that of the natural lightning cases.