微秒脉冲大气压氦气等离子体射流阵列特性  

Atmospheric pressure plasma jet array in helium driven by microsecond pulses

作　　者：周亦骁 邵涛[1,3] 章程[1,3] 方志[2] 严萍[1,3,4] 黄伟民[1] 牛铮[1] 

机构地区：[1]中国科学院电工研究所,北京100190 [2]南京工业大学自动化与电气工程学院,南京211816 [3]中国科学院电力电子与电气驱动重点实验室,北京100190 [4]电力设备电气绝缘国家重点实验室(西安交通大学),西安710049

出　　处：《强激光与粒子束》2014年第4期62-66,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51222701;51207154;51377075);电力设备电气绝缘国家重点实验室开放基金项目(EIPE12204);国家重点基础研究发展计划(2014CB239505)

摘　　要：为了深入研究等离子射流阵列的放电特性,利用上升沿1μs、脉宽2μs的微秒脉冲电源产生等离子体射流,通过电压电流波形的测量和发光图像的拍摄,研究了在针-环双电极结构下,不同电极位置以及不同重复脉冲频率下氦气等离子体射流阵列的放电特性。实验结果表明放电最初产生在阵列的两端,随着外加电压幅值的增加,中心管也会有射流产生,最终形成射流阵列。随地电极距管口距离的变远,放电电流和中心管的射流长度均呈现出先增大后减小的变化趋势(20mm处取得最大值),随着重复脉冲频率的增大,放电由不均匀的丝状放电向均匀放电转变,放电电流先减小而后保持不变。In order to study the characteristics of a plasma jet array,the discharge was driven by a microsecond pulse generator with 1-μs rise time and 2-μs duration.With a needle-ring configuration,the discharge properties of the helium plasma jet array at different ground electrode positions and repetition pulse frequencies were studied by means of voltage and current measurement and light-emission pictures.The experimental results show that the discharge was initiated at the edges of the plasma jet array at first.With the increase of the applied voltage,the plasma jet occurred in the middle tube,and the plasma jet array was finally formed.When the gap between the ground electrode and the tube nozzle increased,the amplitude of discharge current increased at first,and then decreased(the maximum value was at the gap of 20mm).With the increase of repetition pulse frequency,the discharge mode changed from filamentary discharge to homogeneous discharge,the discharge current decreased at first, and then remained unchanged.

关 键 词：微秒脉冲 等离子体射流 射流阵列 放电特性 重复频率 

分 类 号：TM89[电气工程—高电压与绝缘技术] TM213[一般工业技术—材料科学与工程]