Chin. Phys. Lett.  2018, Vol. 35 Issue (4): 045202    DOI: 10.1088/0256-307X/35/4/045202
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
Effect of Parallel-Plate Geometry on Mode Transition Behavior in Argon Microplasmas: Two-Dimensional Simulation
Xiang-Mei Liu1**, Yuan-Hong Song2, Wei Jiang3, Wen-Zhu Jia2
1School of Science, Qiqihar University, Qiqihar 161006
2School of Physics, Dalian University of Technology, Dalian 116024
3School of Physics, Huazhong University of Science and Technology, Wuhan 430074
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Xiang-Mei Liu, Yuan-Hong Song, Wei Jiang et al  2018 Chin. Phys. Lett. 35 045202
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Abstract A two-dimensional self-consistent fluid model is employed to investigate radio-frequency process parameters on the plasma properties in Ar microdischarges. The neutral gas density and temperature balance equations are taken into account. We mainly investigate the effect of the electrode gap on the spatial distribution of the electron density and electron temperature profiles, due to a mode transition from the $\gamma$ regime (secondary electrons emission is responsible for the significant ionization) to the $\alpha$ regime (sheath oscillations and bulk electrons are responsible for sustaining discharge) induced by a sudden decrease of electron density and electron temperature. The pressure, radio-frequency sources frequency and voltage effects on the electron density are also elaborately investigated.
Received: 02 January 2018      Published: 13 March 2018
PACS:  52.25.-b (Plasma properties)  
  52.65.-y (Plasma simulation)  
Fund: Supported by the Fundamental Research Funds in Heilongjiang Provincial Universities of China under Grant No 135209312.
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https://cpl.iphy.ac.cn/10.1088/0256-307X/35/4/045202       OR      https://cpl.iphy.ac.cn/Y2018/V35/I4/045202
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Xiang-Mei Liu
Yuan-Hong Song
Wei Jiang
Wen-Zhu Jia
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