雷电通道温度测量方法

Measuring Method for Lightning Channel Temperature.

作者信息

Li X, Zhang J, Chen L, Xue Q, Zhu R

机构信息

Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science &Technology, Nanjing, 210044, China.

出版信息

Sci Rep. 2016 Sep 26;6:33906. doi: 10.1038/srep33906.

DOI:10.1038/srep33906

PMID:27665937

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5036177/

Abstract

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.

摘要

在本文中，我们利用闪电光谱理论和局部热力学平衡（LTE）模型来论证闪电通道的温度。使用冲击电流发生器平台（ICGS）来模拟闪电放电通道，并计算了模拟闪电的红外光谱（930nm）和可见光谱（648.2nm）的光谱能量。结果表明，在5-50kA的范围内，红外光谱和可见光谱的发光强度峰值均随雷电流强度的增加而增大。基于这些结果，推导出闪电通道的温度为6140.8-10424K。此外，通道温度与雷电流强度近似呈指数关系，这与自然闪电情况相符。