1. Key Laboratory of Infrared System Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 200083, China
2. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
3. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:The point discharge is a kind of discharge phenomenon which is produced by the sharp point of the object. It belongs to a kind of corona discharge. It has been widely used in lightning rod and electrostatic dust removal technology. At present, the research on point discharge is mainly focused on the discharge intensity, and the research on its spectrum is not much. In this paper, it is found that the point discharge has strong radiation in the ultraviolet band. The ionization characteristics of the tip discharge were simulated by Comsol software, and the discharge spectrum was analyzed by means of mathematical physics model. In addition, the ionization characteristics of the point discharge are simulated by Comsol software. The radiation spectrum and radiation intensity of the discharge are analyzed by the mathematical physical model. The radiation intensity is first increased and then decreased with time, and the UV band can be estimated according to the distribution intensity of N2+ of the radiation intensity. The ultraviolet spectrum of the point discharge was analyzed by three ultraviolet spectra channels. The results show that the emission spectrum of the point discharge is distributed in the 240~340 nm band, 340 nm is the strongest. At the same time, the intensity of ultraviolet radiation of the point discharge decreases with the increase of the tip distance, and has a linear relationship with the imaging integration time. Besides, the linear slope decreases with the tip distance increasing in the same channel. The quantitative relationship between the radiation energy and the tip distance, the tip voltage and the integration time is obtained, and the mathematical model of the point discharge is validated. It is shown that, for the first time, this study provides a solid support for the depth study of UV discharge characteristics of the tip.
庾金涛,房陈岩,李清灵,尹达一. 尖端放电紫外光谱特性仿真分析及验证[J]. 光谱学与光谱分析, 2018, 38(10): 2989-2997.
YU Jin-tao, FANG Chen-yan, LI Qing-ling, YIN Da-yi. Research on UV Spectrum of Atmospheric Point Discharge and Simulation Analysis. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(10): 2989-2997.
[1] KUANG Lei, GU Yan(匡 蕾,顾 燕). Infrared Technology(红外技术), 2015, 37(11): 986.
[2] LIANG Po, HE Ning, LIAO Xin(梁 坡,何 宁,廖 欣). Laser & Optoelectronics Progress(激光与光电子学进展), 2011, 48(8): 118.
[3] SHEN Shuang-yan, JIN Xing, ZHANG Peng(沈双晏,金 星,张 鹏). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2016, 36(2): 359.
[4] ZHOU Qing(周 青). Research on the Electronics and Processing Technology of Solar-Blind Ultraviolet, Visible, and Shortwave Infrared Bands for Staring Imaging Applications(日盲紫外-可见-短波红外凝视成像电子学及处理技术研究). Beijing: University of Chinese Academy of Sciences(北京:中国科学院大学), 2013, 14.
[5] WANG Cai-xiong, TANG Zhi-guo, CHANG Wen-zhi, et al(王彩雄,唐志国,常文治,等). Power System Technology(电网技术), 2011, 35(11): 157.
[6] YAN Mu-hong(言穆弘). Scientia Atmospherica Sinica(大气科学), 1986, 10(3):302.
[7] Raizer Y P. Gas Discharge Physics. Berlin: Springer, 1991.
[8] Bardos L,Barankov H. Thin Solid Films, 2010, 518(23): 6705.
[9] LI Jing-jing(李晶晶). The Research of Magnetic Field Simulation System Based on MATLAB and COMSOL(基于MATLAB与COMSOL的磁场仿真系统研究). Jilin: Jilin University(吉林:吉林大学), 2015, 27.
[10] YANG Jie(杨 杰). Optoelectronic Technology(光电子技术), 2011, 31(4): 274.
[11] FANG Chen-yan(房陈岩). Research on the Ultraviolet Features and Multi-Spectral Imaging Technology of High Voltage Air Discharge(空气高压放电紫外特性及多光谱成像技术研究). Beijing: University of Chinese Academy of Sciences(北京:中国科学院大学), 2016, 105.