O_2、CO_2、N_2对常压He多电流脉冲放电特性的影响  

Effects of O_2,CO_2 and N_2 on Discharge Characteristic of Multi-current Pulsed Discharge in Helium at Atmospheric Pressure

作　　者：钱丹娜 张燕[2] 孙岩洲[3] QIAN Danna;ZHANG Yan;SUN Yanzhou(Electrical Invention Review Department,State Intellectual Property Office,Beijing 100089,China;School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China;School of electrical Engineering and Automatic,Henan Polytechnic University,Jiaozuo 454000,Henan,China)

机构地区：[1]国家知识产权局电学发明审查部,北京100089 [2]河南理工大学机械与动力工程学院,河南焦作454000 [3]河南理工大学电气工程与自动化学院,河南焦作454000

出　　处：《真空与低温》2019年第1期29-35,共7页Vacuum and Cryogenics

基　　金：河南省教育厅基础研究计划(13A460339;11405044;U1204506)

摘　　要：为了研究少量的O_2、CO_2和N_2对常压He多电流脉冲放电的影响,分别对其放电时的电流电压波形、Lissa-jious图形和发射光谱进行了实验研究。结果表明:在外加电压不变的情况下,随着分别混入的O_2、CO_2和N_2流量的增加,每半个周期中电流脉冲的个数并没有改变,电流脉冲的峰宽却明显变窄,从μs量级变为ns量级,此时Lis-sajous图形显示辉光放电时第一个电流脉冲所需要的外加电压要比丝状放电时低的多,介质板上的积累电荷明显减少,放电逐渐从辉光放电过渡到丝状放电,其发射光谱表明,这主要是由于放电空间内的亚稳态He(2~3S)原子逐渐减少导致的。Order to study the effect of a small amount of O2,CO2 and N 2 on the discharge of atmospheric He multi-current pulse discharge,the current and voltage waveforms,Lissajious patterns and emission spectra of the discharge were studied experimentally.The results show that under the condition of constant applied voltage,with the increase of O2,CO2 and N2 flux respectively,the number of current pulses does not change,but the peak width of current pulse becomes narrower,fromμs to ns.The Lissajous figure shows that the applied voltage required for the first current pulse in glow discharge is much lower than that in filamentary discharge and the accumulated charge on the dielectric plate decreased obviously.This shows the discharge gradually transitioned from glow discharge to filamentary discharge.Their emission spectra show that this is mainly due to the gradual decrease of metastable He(2^3 S)atoms in the discharge space.

关 键 词：常压多电流脉冲放电 辉光放电 丝状放电 发射光谱 氦气 

分 类 号：O461[理学—电子物理学]