Characteristics of a Normal Glow Discharge Excited by DC Voltage in Atmospheric Pressure Air  

作　　者：李雪辰 赵欢欢 贾鹏英 

机构地区：[1]College of Physics Science and Technology, Hebei University [2]Key Laboratory of Photo-Electronics Information Materials of Hebei Province

出　　处：《Plasma Science and Technology》2013年第11期1149-1153,共5页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.10805013 and 51077035);Funds for Distinguished Young Scientists of Hebei Province,China(No.A2012201045);the Key Project of Chinese Ministry of Education(No.210014);the Natural Science Foundation of Hebei Province(No.A2011201132);Hebei Province Department of Education for Outstanding Youth Project of China(Y2011120)

摘　　要：Atmospheric pressure glow discharges were generated in an air gap between a needle cathode and a water anode. Through changing the ballast resistor and gas gap width between the electrodes, it has been found that the discharges are in normal glow regime judged from the currentvoltage characteristics and visualization of the discharges. Results indicate that the diameter of the positive column increases with increasing discharge current or increasing gap width. Optical emission spectroscopy is used to calculate the electron temperature and vibrational temperature. Both the electron temperature and the vibrational temperature increases with increasing discharge current or increasing gap width. Spatially resolved measurements show that the maxima of electron temperature and vibrational temperature appeared in the vicinity of the needle cathode.Atmospheric pressure glow discharges were generated in an air gap between a needle cathode and a water anode. Through changing the ballast resistor and gas gap width between the electrodes, it has been found that the discharges are in normal glow regime judged from the currentvoltage characteristics and visualization of the discharges. Results indicate that the diameter of the positive column increases with increasing discharge current or increasing gap width. Optical emission spectroscopy is used to calculate the electron temperature and vibrational temperature. Both the electron temperature and the vibrational temperature increases with increasing discharge current or increasing gap width. Spatially resolved measurements show that the maxima of electron temperature and vibrational temperature appeared in the vicinity of the needle cathode.

关 键 词：atmospheric pressure glow discharge positive column optical emission spectroscopy electron temperature vibrational temperature 

分 类 号：O461.21[理学—电子物理学]