Abstract Identifying a relation between current and channel luminosity is beneficial for producing an approximation to channel current via channel optical signal. In this paper, damped sinusoidal oscillation currents with more or less symmetrical waveshapes are injected into a tungsten copper hemispherical air gap and into a graphite rod air gap. Repeatability and reliability in channel luminosity measurement are compared between two air gap channels. Parametric correlation analyses, involving 12 sequences of lightning currents with a current peak from 13.0 kA to 34.4 kA, a current 10–90% risetime from 9.7 μs to 20.2 μs, and a current half-peak width from 21.6 μs to 46.4 μs, show the luminosity signatures also exhibit more or less symmetrical pulses, although they lag behind the corresponding current pulses. In initial primary pulses of these damped sinusoidal oscillations, the current peak is approximately direct proportional to the luminosity peak. Direct proportional relations are also observed between current 10–90% risetime and luminosity 10–90% risetime, between current half-peak width and luminosity half-peak width, as well as between current charge transfer and luminosity-time integration. These features are similar to those found in classical M-component current pulses associating with the M-component mode of charge transfer. Applicability of the results is further discussed to estimate the channel current from the channel luminosity.

中文翻译：

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实验室产生的对称波形雷电流与弧光通道光度

摘要 确定电流和通道亮度之间的关系有利于通过通道光信号产生通道电流的近似值。在本文中，具有或多或少对称波形的阻尼正弦振荡电流被注入钨铜半球形气隙和石墨棒气隙。比较两个气隙通道之间通道亮度测量的可重复性和可靠性。参数相关性分析涉及 12 个雷电流序列，电流峰值为 13.0 kA 至 34.4 kA，电流上升时间为 9.7 μs 至 20.2 μs，电流上升时间为 10-90%，电流半峰宽为 21.6 μs 至 46.4 μs光度特征也表现出或多或少对称的脉冲，尽管它们落后于相应的电流脉冲。在这些阻尼正弦振荡的初始初级脉冲中，电流峰值与光度峰值近似成正比。还观察到电流 10-90% 上升时间和光度 10-90% 上升时间之间、电流半峰宽和光度半峰宽之间以及电流电荷转移和光度-时间积分之间的成正比关系。这些特征类似于在与电荷转移的 M 分量模式相关的经典 M 分量电流脉冲中发现的特征。进一步讨论了结果的适用性，以根据通道亮度估计通道电流。还观察到电流 10-90% 上升时间和光度 10-90% 上升时间之间、电流半峰宽和光度半峰宽之间以及电流电荷转移和光度-时间积分之间的成正比关系。这些特征类似于在与电荷转移的 M 分量模式相关的经典 M 分量电流脉冲中发现的特征。进一步讨论了结果的适用性，以根据通道亮度估计通道电流。还观察到电流 10-90% 上升时间和光度 10-90% 上升时间之间、电流半峰宽和光度半峰宽之间以及电流电荷转移和光度-时间积分之间的成正比关系。这些特征类似于在与电荷转移的 M 分量模式相关的经典 M 分量电流脉冲中发现的特征。进一步讨论了结果的适用性，以根据通道亮度估计通道电流。