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中文摘要：
利用水电极介质阻挡放电装置,分别在大气压空气和氩气中得到随机放电丝、六边形斑图和均匀弥散三种不同模式的放电。通过比较三种不同模式下的光信号和电流信号,研究介质阻挡放电中光信号和电流信号的关系。研究结果表明,当放电信号较大时,光信号与电流信号存在着一一对应关系。由于电流信号包含放电电流和位移电流,因此当放电电流很小时,放电电流信号淹没在位移电流中。在这种情况下,只能通过研究光信号的波形来研究相应的放电情况。除此之外,研究了单个放电丝的光信号,发现光信号测量可以实现对放电过程的空间分辨测量。结果表明分析光信号是一种很好的研究介质阻挡放电动力学过程的方法。
英文摘要：
In the present study, a device of water electrodes including stochastic filament mode, hexagon pattern mode was used to get different discharge modes in air and Ar respectively, and homogeneous diffusion mode. By comparing the waveforms of light emission and current for the three different modes, the relationship between the waveforms of light emission and current in dielectric barrier discharge was investigated. Research results show that the waveforms of light emission and current are similar when the discharge signal is very strong. However, the discharge current signal can not be discerned from the displacement current when the discharge current is very weak, because the current signal includes discharge current and displacement current. Under this circumstance, discharge dynamics can be investigated by studying the waveform of light emission. In addition, the light emission signal of single filament was obtained because spatial resolved measurement can be easily realized for the light emission signal measurement. Consequently, the research results indicate that it is a good method to investigate the discharge dy- namics by analyzing the waveform of light emission in dielectric barrier discharge.
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