Generating diffuse discharge via repetitive nanosecond pulses and line-line electrodes in atmospheric air.
Generating diffuse discharge via repetitive nanosecond pulses and line-line electrodes in atmospheric air.
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DOI：
10.1063/1.4822104
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
Lee Li;Yunlong Liu;Yafeng Ge;Yu Bin;Jia-Jia Huang-Jia;F. Lin
中科院分区：
文献类型：
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作者：
Lee Li;Yunlong Liu;Yafeng Ge;Yu Bin;Jia-Jia Huang-Jia;F. Lin
大气中的扩散放电可以产生极高的功率密度和大规模的低温等离子体。本文报道了一种可实现的产生漫放电的方法。基于谐振理论，研制了一种小型化的高压重复频率纳秒脉冲发生器（HRNPG）作为放电激励源。高功率NPG主要由重复充电电路、特斯拉Transformer和锐化开关组成。在低于1.0kV的电压下，初级重复充电电路包括两个快速晶闸管作为低压开关。设计了一种螺旋形特斯拉Transformer，以提供大于100的峰值变压比。HRNPG原型能够在500 Hz的重复频率下产生峰值电压超过100 kV、上升时间约为30 ns的脉冲。采用直径为0.4mm的铜线电极，构造了具有高度不均匀电场的间隙。在合适的间隙间距和脉冲作用下，在线型和环型电极对中产生了类辉光扩散放电。给出了一些典型图像。
Diffuse discharge in atmospheric air can generate extremely high power density and large-scale non-thermal plasma. An achievable method of generating diffuse discharge is reported in this paper. Based on the resonance theory, a compact high-voltage repetitive nanosecond pulse generator (HRNPG) has been developed as discharge excitation source. The HRNPG mainly consists of repetitive charging circuit, Tesla transformer and sharpening switch. With the voltage lower than 1.0 kV, the primary repetitive charging circuit comprises two fast thyristors as low-voltage switches. A spiral Tesla transformer is designed to provide a peak transformation ratio of more than 100. The HRNPG prototype is capable of generating a pulse with over 100 kV peak voltage and ~30 ns rise-time at the repetition frequency of 500 Hz. Using the copper line electrodes with a diameter of 0.4 mm, the gaps with highly non-uniform electric field are structured. With the suitable gap spacing and applied pulse, the glow-like diffuse discharge has been generated in line-type and ring-type electrode pairs. Some typical images are presented.