一种大气压放电氦等离子体射流的实验研究  

Experimental studies on an atmospheric pressure He plasma jet

作　　者：江南[1] 曹则贤[1] 

机构地区：[1]中国科学院物理研究所

出　　处：《物理学报》2010年第5期3324-3330,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10675163)资助的课题~~

摘　　要：大气压介质阻挡放电(DBD)等离子体射流获得了广泛的应用.但是到目前为止,人们对其形成机理仍不甚清楚.为此,本文对其进行了一系列的实验研究.与其他采用高速CCD进行的研究不同,本文研究的主要手段是两个带有狭缝的光电倍增管,数码相机和电学测量.虽然这些实验条件相对比较简陋,但是本文仍然根据这些实验结果探讨了等离子体射流的形成机理,传输特性,以及影响等离子体射流长度的实验参数,并发现了"电荷溢流"现象.Atmospheric pressure plasma jets based on dielectric barrier discharge have found many applications,yet its basic behavior and its formation mechanism are poorly understood. We carried out some basic experimental studies on this problem. Unlike the other similar studies based on ICCD,two MPTs with aligned slits,digital camera,and electrical measurements were mainly used to investigate the plasma jet＇s behavior under different discharge conditions. Despite the materials employed in our experiment are quit simple,by comparing the measuremental results,a new charge-overflow phenomenon is obsewed,and the plasma jet mechanism （e. g. how the plasma jet is formed,how is it transported,what are the main parameters that determines the jet length,etc. ） are discussed based on the experimental results.

关 键 词：介质阻挡放电 电晕放电 大气压等离子体射流 电荷溢流 

分 类 号：O358[理学—流体力学] O539[理学—力学]