高电压技术
高電壓技術
고전압기술
HIGH VOLTAGE ENGINEERING
2012年
1期
188-193
,共6页
介质阻挡放电%多脉冲%辉光放电%增强型电子耦合器件%光学演化%放电模式
介質阻擋放電%多脈遲%輝光放電%增彊型電子耦閤器件%光學縯化%放電模式
개질조당방전%다맥충%휘광방전%증강형전자우합기건%광학연화%방전모식
dielectric barrier discharge%multi-pulse%glow discharge%intensified charge-coupled device（ICCD）%optical development%discharge mode
为研究大气压介质阻挡多脉冲辉光放电的模式转化规律及其放电机理,在6mm氦气中进行了3脉冲辉光放电试验,测量了相应的电气参数,并利用增强型电子耦合器件（intensified charge-coupled device,ICCD）拍摄了放电间隙侧面的短时曝光图像,提取放电图像的灰度值并绘制出光强在气隙间的分布曲线,按放电图像特征将放电分成不同阶段,系统研究了各个阶段的放电模式及其转化规律,并探讨了放电的机理。结果表明：放电起始阶段具有汤森放电的阳极发光结构;空间电荷的作用使得放电从开始的汤森放电转化为具有完整的正柱区、法拉第暗区和负辉区的辉光放电;放电电流脉冲之间微弱的发光特性仍具有辉光放电结构,有力证明了放电并未熄灭,而是维持着较弱的辉光放电。
為研究大氣壓介質阻擋多脈遲輝光放電的模式轉化規律及其放電機理,在6mm氦氣中進行瞭3脈遲輝光放電試驗,測量瞭相應的電氣參數,併利用增彊型電子耦閤器件（intensified charge-coupled device,ICCD）拍攝瞭放電間隙側麵的短時曝光圖像,提取放電圖像的灰度值併繪製齣光彊在氣隙間的分佈麯線,按放電圖像特徵將放電分成不同階段,繫統研究瞭各箇階段的放電模式及其轉化規律,併探討瞭放電的機理。結果錶明：放電起始階段具有湯森放電的暘極髮光結構;空間電荷的作用使得放電從開始的湯森放電轉化為具有完整的正柱區、法拉第暗區和負輝區的輝光放電;放電電流脈遲之間微弱的髮光特性仍具有輝光放電結構,有力證明瞭放電併未熄滅,而是維持著較弱的輝光放電。
위연구대기압개질조당다맥충휘광방전적모식전화규률급기방전궤리,재6mm양기중진행료3맥충휘광방전시험,측량료상응적전기삼수,병이용증강형전자우합기건（intensified charge-coupled device,ICCD）박섭료방전간극측면적단시폭광도상,제취방전도상적회도치병회제출광강재기극간적분포곡선,안방전도상특정장방전분성불동계단,계통연구료각개계단적방전모식급기전화규률,병탐토료방전적궤리。결과표명：방전기시계단구유탕삼방전적양겁발광결구;공간전하적작용사득방전종개시적탕삼방전전화위구유완정적정주구、법랍제암구화부휘구적휘광방전;방전전류맥충지간미약적발광특성잉구유휘광방전결구,유력증명료방전병미식멸,이시유지착교약적휘광방전。
In order to study the mode transition and the mechanism of multi-pulse dielectric barrier glow discharge,three-pulse glow discharge in 6mm helium was obtained.The electrical signals were measured,and short exposure time images were taken using an intensified charge-coupled device（ICCD）.The gray value of the images was extracted and the corresponding light distribution was drawn to make the images more visualized.According to the features of discharge images,the optical development was analyzed by dividing the current pulses into different stages.Moreover,the discharge modes and the transition law of all stages were studied systematically,and the mechanism of discharge was investigated.The results show that,in the initial stage,the discharge has an anode luminous structure of Townsend discharge.Then the discharge transits to glow mode with a structure of positive column,Faraday dark space and negative glow space.The weak luminescence between adjacent pulses still has a glow discharge structure,which strongly suggests that the discharge does not extinguish but maintains a weak glow discharge during these stages.
