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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >The electrical conductivity of a cloud-to-ground lightning discharge channel
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The electrical conductivity of a cloud-to-ground lightning discharge channel

机译：地雷放电通道的电导率

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摘要

Based on the wavelengths, relative intensities and other transition parameters of the lines in cloud-to-ground (CG) lightning return stroke spectra captured by a slitless spectrograph in China, the temperatures and electron densities for 16 discharge channels have been calculated, and the electrical conductivities of the channels have been further obtained using the electrical conducting theory of plasma. The results show that the conductivities for 16 channels are in a range of (1.62–2.27)×104 Sm~(-1). The electrical conductivity chiefly depends on the plasma temperature, and the higher temperatures correspond to the higher conductivities for the discharge channels in the same area. In addition, the data of the electrical conductivity show some regional characteristics. In general, the conductivities in coastal areas are higher than those on plateaus for channels with approximately same temperature. For a given return stroke channel, the conductivities show a weak trend of decreasing with an increase in the height along the channel.
机译：根据中国无缝光谱仪捕获的云对地（CG）雷击回程谱中线的波长，相对强度和其他跃迁参数，计算了16个放电通道的温度和电子密度，并且使用等离子体的导电理论进一步获得了通道的导电性。结果表明，16个通道的电导率在（1.62–2.27）×104 Sm〜（-1）范围内。电导率主要取决于等离子体温度，较高的温度对应于相同区域中放电通道的较高电导率。另外，电导率数据显示出一些区域特征。通常，对于温度大致相同的通道，沿海地区的电导率要高于高原地区的电导率。对于给定的回程通道，电导率显示出随通道高度增加而减小的弱趋势。

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