电工技术学报2017，Vol.32Issue(2)：33-42,10.
不同电极间距下纳秒脉冲表面介质阻挡放电分布特性
Distribution Characteristics of Nanosecond-Pulsed Surface Dielectric Barrier Discharge at Different Electrode Gaps
摘要
Abstract
Electrode gap is an important geometric parameter in surface dielectric barrier discharge (SDBD).Based on experimental studies and simulations,the influence of electrode gaps on the distribution characteristics of nanosecond-pulsed SDBD is studied,and the mechanisms of two plasma distributions (quasi-diffuse mode and separated-channel mode) are analyzed theoretically.Experimental results show that electrode gap is the key geometric parameter accounting for the two typical discharge characteristics and different plasma distributions.Simulations of external electric fields of discharge areas present that the direct reasons of two plasma distributions are the morphological and numerical differences of external electric fields at different gaps.Combined with gas discharge theory,it is deduced that the quasi-diffuse distribution is due to that the streamers forward-expanding and spanwise-exciting ionization act simultaneously,while the separated-channel distribution is mainly because the streamer forward expanding is dominant and span-wide ionization is relatively weak.The main mechanisms are the match of the changing rate of electric field with time and space,and the expanding velocity of streamer channels.关键词
纳秒脉冲/表面介质阻挡放电/电极间距/等离子体分布特性/外电场分布Key words
Nanosecond-pulsed/surface dielectric barrier discharge/electrode gap/plasma distribution characteristics/distribution of external electric field分类
信息技术与安全科学引用本文复制引用
姜慧,邵涛,章程,严萍..不同电极间距下纳秒脉冲表面介质阻挡放电分布特性[J].电工技术学报,2017,32(2):33-42,10.基金项目
国家自然科学基金(51577177和51607018),中央高校基本科研业务费(106112016CDJXY150003)资助项目. （51577177和51607018）
