There are many advantages in obtaining low-temperature plasmas that are rich in active particles by atmospheric pressure glow discharge, so there has been a lot of research on the acquisition method and application of it. However, there is a lack of knowledge about the mechanism of atmospheric pressure glow discharge driven by an AC resonant power supply. In this paper, we describe our study of the characteristic differences between half-cycle positive and negative atmospheric pressure glow discharges driven in open air by an AC resonant power supply, and we describe our analysis of the associated physical mechanism. The comparison and analysis of experimental results indicate that both positive-cycle and negative-cycle discharges led to typical glow discharge and no streamer discharge appeared in the discharge process. There were still charged particles in the discharge channel when the discharge current was zero. With increasing amplitude of the output voltage of the power supply, the glow area near the electrode surface and the plasma distribution area in the discharge channel increased. When the output voltage of the power supply was low, the negative polarity discharge was more likely to form in the gap of the pin-to-plate electrode. In the AC discharge process, the α-mode discharge was dominant, and the developing speed of the positive-cycle discharge was faster than that of the negative-cycle discharge. The polarity effect became less obvious with the increase in the output voltage amplitude of the power supply.

中文翻译：

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交流谐振电压驱动的大气压辉光放电正负半周特性差异研究

常压辉光放电获得富含活性粒子的低温等离子体具有诸多优势，因此对其获取方法和应用进行了大量研究。然而，人们对交流谐振电源驱动的大气压辉光放电机理还缺乏了解。在本文中，我们描述了我们对交流谐振电源在露天驱动的半周期正负大气压辉光放电之间的特征差异的研究，并描述了我们对相关物理机制的分析。实验结果对比分析表明，正循环和负循环放电均产生典型的辉光放电，放电过程中未出现流光放电。当放电电流为零时，放电通道中仍有带电粒子。随着电源输出电压幅值的增加，电极表面附近的辉光面积和放电通道中的等离子体分布面积增加。当电源输出电压较低时，极易在pin-to-plate电极的间隙形成负极性放电。在交流放电过程中，α模式放电占优势，正循环放电的发展速度快于负循环放电。随着电源输出电压幅度的增加，极性效应变得不那么明显。电极表面附近的辉光面积和放电通道中的等离子体分布面积增加。当电源输出电压较低时，极易在pin-to-plate电极的间隙形成负极性放电。在交流放电过程中，α模式放电占优势，正循环放电的发展速度快于负循环放电。随着电源输出电压幅度的增加，极性效应变得不那么明显。电极表面附近的辉光面积和放电通道中的等离子体分布面积增加。当电源输出电压较低时，极易在pin-to-plate电极的间隙形成负极性放电。在交流放电过程中，α模式放电占优势，正循环放电的发展速度快于负循环放电。随着电源输出电压幅度的增加，极性效应变得不那么明显。α模式放电占优势，正循环放电的发展速度快于负循环放电。随着电源输出电压幅度的增加，极性效应变得不那么明显。α模式放电占优势，正循环放电的发展速度快于负循环放电。随着电源输出电压幅度的增加，极性效应变得不那么明显。