大气压下纳秒脉冲弥散放电

Nanosecond-pulse diffuse discharges at atmospheric pressure

纳秒脉冲条件下放电物理过程十分复杂,会出现多通道交叠的弥散放电.这种放电通常在较高电场强度下形成,具有较高粒子密度和较大放电体积等特点,成为近年来纳秒脉冲放电等离子体研究中的热点.本文综述了大气压纳秒脉冲弥散放电领域的研究进展.首先介绍了弥散放电的国内外研究现状,然后从放电发光和电特性角度分析了放电特性及其影响因素,最后评述了纳秒脉冲弥散放电的形成机理.

The physical process of nanosecond pulse discharge is complex. One type of such discharge is diffuse discharge covering multiple overlapped channels. In general, diffuse discharges with high electron density and large volume are generated by a strong electric field. Such discharge has become a research hot spot in the field of nanosecond-pulse discharge plasmas. This paper focuses on work conducted on nanosecond-pulse diffuse discharges at atmospheric pressure. First, the research status of diffuse discharges is introduced. Second, discharge characteristics and the factors affecting diffuse discharges are analyzed according to discharge images and electrical parameters. Finally, the mechanism of diffuse discharge is discussed.