Spectroscopic study of bipolar nanosecond pulse gas-liquid discharge in atmospheric argon  

作　　者：Sen WANG Dezheng YANG Feng LIU Wenchun WANG Zhi FANG 王森;杨德正;刘峰;王文春;方志(Key Lab of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology;College of Electrical Engineering and Control Science, Nanjing Tech University)

机构地区：[1]Key Lab of Materials Modification by Laser,Ion and Electron Beams,Ministry of Education,Dalian University of Technology,Dalian 116024,People＇s Republic of China [2]College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211009,People＇s Republic of China

出　　处：《Plasma Science and Technology》2018年第7期121-126,共6页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant Nos.51677019);National Key Research and Development Program of China(2016YFC0207200)

摘　　要：Atmospheric gas-liquid discharge with argon as a working gas is presented by employed nanosecond pulse power. The discharge is presented in a glow-like mode. The discharge powers are determined to be less than 1 W, and remains almost constant when the discharge duration time increases. Bountiful active species are determined by capturing optical emission spectra, and their main generation processes are also discussed. The plasma gas temperature is calculated as 350 K by comparing the experimental spectra and the simulated ones of N2（C3Ⅱg→B3Ⅱg, △v=-2）. The time resolved vibrational and rotational temperature is researched to present the stability of discharge when pulse voltage and discharge duration vary. The electron density is determined to be 1016 cm-3 according to the Stark broadening effect of the Ha line.Atmospheric gas-liquid discharge with argon as a working gas is presented by employed nanosecond pulse power. The discharge is presented in a glow-like mode. The discharge powers are determined to be less than 1 W, and remains almost constant when the discharge duration time increases. Bountiful active species are determined by capturing optical emission spectra, and their main generation processes are also discussed. The plasma gas temperature is calculated as 350 K by comparing the experimental spectra and the simulated ones of N2（C3Ⅱg→B3Ⅱg, △v=-2）. The time resolved vibrational and rotational temperature is researched to present the stability of discharge when pulse voltage and discharge duration vary. The electron density is determined to be 1016 cm-3 according to the Stark broadening effect of the Ha line.

关 键 词：nanosecond pulse discharge gas-liquid discharge optical emission spectra electron density 

分 类 号：TH776.1[机械工程—仪器科学与技术] S436.612.2[机械工程—精密仪器及机械]