基于发射光谱研究多针-板式水中He介质阻挡放电  

Study on the discharge characteristics of a multi-needle to plate DBD He plasma generated in water using optical emission spectroscopy

作　　者：岑祥旗 洪义 潘静 李正华 张敬 CEN Xiang-qi;HONG Yi;PAN Jing;LI Zheng-hua;ZHANG Jing(Department of Physics and Materials Engineering,Dalian Minzu University,Dalian 116600,China)

机构地区：[1]大连民族大学物理与材料工程学院,辽宁大连116600

出　　处：《物理实验》2020年第5期6-10,共5页Physics Experimentation

基　　金：大连民族大学2019年度省级大学生创新训练项目(No.201912026179)。

摘　　要：采用多针-板式介质阻挡放电电极结构,并利用发射光谱研究了水中氦气等离子体的放电特性.实验结果表明:He等离子体中富含He*,H*α,H*β,O*,OH*,N*2以及N+2等多种活性粒子,并且有效功率、气体温度、电子激发温度随峰值电压的增大几乎线性地增大,传导电流远大于位移电流.当峰值电压从7 kV增大到10 kV时,有效功率最大值约65 W,气体温度从414 K增大到498 K,而电子激发温度从4489 K增大到4635 K.Atmospheric DBD He plasma was directly generated in water by the multi-needle to plate electrode configuration,and the discharge characteristics were estimated by the optical emission spectroscopy.Experimental results showed that many active species,such as He*,H*α,H*β,O*,OH*,N*2,N+2,etc.,were existed in the DBD He plasma.The effective power,gas temperature and electron excitation temperature linearly increased with the increase of peak applied voltage,and the conduction current was much larger than the displacement current.When the peak applied voltage increased from 7 kV to 10 kV,the peak value of effective power was about 65 W,the gas temperature increased from 414 K to 498 K,and the electronic excitation temperature increased from 4489 K to 4635 K.

关 键 词：介质阻挡放电 He等离子体 发射光谱 电子激发温度 

分 类 号：O531[理学—等离子体物理] O433[理学—物理]