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| Response Regularity Between Glow Discharge Plasma and Static Pressure Change |
| Li Fan1, 2, Jiao Junkai3, Luo Haiyun3, Wang Sichen2, Lin Feng2 |
1. School of Physics University of Chinese Academy of Sciences Beijing 100049 China;
2. Key Laboratory of Advanced Energy and Power Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100190 China;
3. Gas Discharge and Plasma Laboratory Department of Electrical Engineering Tsinghua University Beijing 100084 China |
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Abstract The frequency response of traditional measurement instruments cannot break through MHz level. In order to investigate more complicate unsteady flow, the new theory needs to be developed, where the field of glow discharge (GD) has the potential to obtain ultra-high frequency response. Before the high-frequency AC drive experiment, the coupling relationship of GD plasma and air pressure was analyzed. Thus, a direct voltage was applied to the electrodes in the experiment, to explore the response regularity between discharge voltage and a wide range of static pressure (0.5~1.0 atmosphere pressure). The results demonstrate that for a spacing of 50μm with the current increasing from 3mA to 4.5mA, the calibrated curves between discharge voltage and pressure decrease monotonically, working in the “abnormal” GD regime. On the contrary, the calibrated curves for a spacing of 250μm with the current increasing from 2mA to 3.5mA, increase monotonically, working in the “sub-normal” GD regime.
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Received: 30 May 2016
Published: 03 January 2017
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2016, Vol. 31 
