高电压技术2013，Vol.39Issue(7)：1569-1576,8.DOI:10.3969/j.issn.1003-6520.2013.07.004
双环电极大气压氦气等离子体射流的特性及其影响因素
Characteristics and Their Influencing Factors of Double-wrapped Electrode Induced Atmospheric Pressure Helium Plasma Jet
摘要
Abstract
In recent years,atmospheric pressure plasma jet (APPJ) has received considerable attention for its application potential.In order to further understand the characteristics of APPJ and its influencing factors,we designed and manufactured a device with double wrapped electrodes for porducing helium plasma jet.Using the device,we experimentally researched the influencing factors on dissipated power and jet length,including the width of electrode and the distance between electrode and nozzle.Then,we analyzed the discharge processes and physical mechanisms of different discharge phenomenon.The experimental results show that the number of current pulses in every half cycle of the applied voltage increases from one to two,and to three gradually as the applied external voltage rises; if the applied external voltage keeps increasing,there will be filamentary discharges of no regulation till the breakdown between the two electrodes.Adding the width of the power electrode and shortening the distance between power electrode and nozzle are both beneficial for improving the dissipated power; the longer the gap between the two electrodes is,or the farther distance from the power electrode to the nozzle is,the longer maximum jet length is; meanwhile,the initial jet length is decided by the width of power electrode.With the increasing of gas flow,the jet length increases at first,then it gets smaller before stopping at a permanent value till the end; during the period of the jet length getting shorter,the multi-peaks phenomenon of APPJ appeared.关键词
大气压等离子体射流/介质阻挡放电/放电特性/射流长度/多脉冲放电/电极参数Key words
atmospheric pressure plasma jet/dielectric barrier discharge/discharge characteristic/jet length/multiple current pulses/electrode parameter引用本文复制引用
侯世英,罗书豪,刘坤,曾鹏,肖旭,张闯..双环电极大气压氦气等离子体射流的特性及其影响因素[J].高电压技术,2013,39(7):1569-1576,8.基金项目
基金资助项目:输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711204) （2007DA10512711204）
中央高校基本科研业务费(CDJRC10150010 （）
CDJZR11150002) （）
国家"111"计划(B08036) （B08036）
Project supported by Independent Research Project of State Key Laboratory of Power Transmission Equipment & System Security and New Technology (2007DA10512711204),Fundamental Research Fund for the Central Universities (CDJRC10150010,CDJZR111S0002),National 111 Program of China(B08036). （2007DA10512711204）
