Design and Experiment of a Needle-to-Cylinder Electrode Structure Realizing the Negative DC Glow Discharge in Ambient Air
LI Hua1, WEI Chang-yan1, LIU Chun-xia1, SHEN Xian-hao2, CHEN Zhen-cheng1*
1. School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China 2. College of Information Science and Engineering, Guilin University of Technology, Guilin 541004, China
Abstract：A new needle-to-cylinder electrode structure was designed to realize the stable glow discharge in ambient air. The stainless steel needle tip with diameter 56.4 μm and the copper cylinder with diameter 4mm were chosen as the cathode and the anode respectively, which were kept parallel by accurate mechanical structure. In the condition that the distance between the needle and the cylinder is 2 mm, the ballasting resistor is 10 MΩ, the discharge resistor is 10 MΩ, the testing resistor is 1 kΩ, and the discharge voltage is -2 740 V, without air flow in ambient air and at room temperature, the stable glow discharge between the needle and the cylinder was realized. Three different discharge modes can be observed: corona discharge, glow discharge and spark, which were verified by the discharge waveform stored in the oscilloscope, and the discharge pictures were recorded by digital camera. The needle-to-cylinder electrode structure is easy to fabricate by the MEMS technology, which can be used as the ion source of the portable analyzing instruments.
李 华1 ，韦昌严1，刘春霞1，神显豪2，陈真诚1* . 实现大气压负直流辉光放电的针-柱电极结构设计与实验 [J]. 光谱学与光谱分析, 2014, 34(07): 1797-1800.
LI Hua1, WEI Chang-yan1, LIU Chun-xia1, SHEN Xian-hao2, CHEN Zhen-cheng1* . Design and Experiment of a Needle-to-Cylinder Electrode Structure Realizing the Negative DC Glow Discharge in Ambient Air. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(07): 1797-1800.
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