Experimental Research on Argon Atomic Emission Spectroscopy at Amospheric Pressure Condition
ZHANG Wei, CHEN Lei*, SONG Peng, ZENG Wen, LIU Yu, FENG Chao, YANG Cong
1. Aerospace Engineering Institute, Shenyang Aerospace University, Shenyang 110136, China
2. College of Electromechanical & Information Engineering, Dalian Minzu University, Dalian 116605, China
Abstract：Dielectric barrier discharge (DBD) at atmospheric pressure has many advantages such as multi-category, depth and breadth, normality, etc. In this paper, a series of parameter diagnoses for the coaxial electrode discharge test were carried out. Argon ionization experiments were carried out under the conditions of 11.4 kHz discharge frequency and 5.4～13.4 kV (interval 1 kV) discharge peak voltage by using self-developed DBD combustion actuator at standard atmospheric pressure. Atomic emission spectrometry (AES) was employed to test and analyze argon plasma excitation and spectroscopy; two-line method and Boltzmannmethod were employed to test electron excitation temperature; electronic density was calculated according to Stark broaden law; the variations in electron excitation temperature and electron density with the increase of the peak discharge voltage were obtained. The results showed that the electron excitation temperature does not monotonically increase with the increase of applied voltage, which indicates the main characteristics of the micro-discharge are not dependent on the external voltage strength, but on the gas composition, gas pressure and discharge model; Increasing discharge power could only increase micro-discharge number; the maximum electron excitation temperature is up to 3 500 K; the electron density which achieves 108～109 cm3 tends to be a quasi linear trend with the increase of applied voltage. The degree of ionization is weak. The exploration of these parameters is of great significance to the study of plasma.
Key words：Atmosphericpressure; DBD; Low temperature plasma; Excited electron temperature; Electron density
[1] HOU Shi-ying, ZENG Peng, SUN Tao, et al(侯世英, 曾 鹏, 孙 韬, 等). High Voltage Engineering(高电压技术), 2014, 40(1): 187.
[2] Shang K, Li J, Lu N, et al. Ozone: Science & Engineering, 2015, 37(2): 178.
[3] An J, Shang K, Lu N, et al. Journal of Hazardous Materials, 2014, 268: 237.
[4] Mastanaiah N, Banerjee P, Johnson J A, et al. Plasma Processes and Polymers, 2013, 10(12): 1120.
[5] WANG Rui, LIU Zhan-he, WU Zhe, et al(王 瑞, 刘战合, 武 哲, 等). Journal of Shenyang Aerospece University(沈阳航空航天大学学报), 2011, 28(3): 2095.
[6] SONG Zhen-xing, HE Li-ming, ZHANG Peng, et al(宋振兴, 何立明, 张 鹏, 等). High Voltage Engineering(高压电技术), 2012, 38(7): 1758.
[7] Kim Woodyung, Mungal M G, Cappel M A. Combustion and Flame, 2010, 157: 374.
[8] GAO Ye-nan, DONG Li-fang, LIU Ying(高烨楠, 董丽芳, 刘 莹). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2015, 35(10): 2708.
[9] Lu X, Han D, Huang Z. Progress in Energy and Combustion Science, 2011, 37(6): 741.
[10] Lin K M, Hu M H, Hung C T, et al. Computer Physics Communications, 2012, 183(12): 2550.
[11] Nagaraja S, Yang V, Adamovich I. Journal of Physics D: Applied Physics, 2013, 46(15): 155.
