Abstract

The evolution of a microsecond pulsed barrier discharge initiated in atmospheric pressure air in the point–plane electrode geometry has been investigated using streak camera photorecording and shadow photography with micrometer resolution and nanosecond exposure. It has been shown that the discharge develops in series and its structure evolves both within a series and from series to series. It has been found that, irrespective of the polarity of a feed voltage pulse, the discharge develops from the point electrode, having the form of a set of many micrometer-diameter channels. At the late stage, the discharge consists of a number of glowing microstructured channels, which occupy the space between the point and barrier and deviate from the point axis, and many faint channels radially propagating over the surface of the barrier. Numerical parameters of the structured have been obtained.

中文翻译：

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不同馈电电压下点平面几何中大气压空气中微秒脉冲屏障放电空间结构的动力学

摘要

已经使用条纹相机照相记录和具有微米分辨率和纳秒曝光的阴影摄影研究了在大气压空气中以点平面电极几何形状引发的微秒脉冲势垒放电的演变。已经表明，放电是串联发展的，并且其结构在串联内以及在串联与串联之间都演化。已经发现，与馈电电压脉冲的极性无关，从点电极产生放电，该点电极具有一组许多微米直径的通道的形式。在后期，放电由许多发光的微结构化通道组成，这些通道占据了点和势垒之间的空间并偏离了点轴，并且还有许多微弱的通道在势垒表面上径向传播。