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Title: The effect of frequency on atmospheric pressure glow discharge in a pin-to-plate gap sustained by a resonant power supply

Abstract

More and more researchers have been attracted to the research of atmospheric pressure glow discharge (APGD) because of its great prospect in numerous industrial applications. Nevertheless, almost all of the industrial applications are based on achievement of stable, large-volume, and uniform APGD. In a previous study, stable filamentary APGD was obtained by applying a resonant power supply between pin-to-plate electrodes which could limit the peak value of discharge current to supress the glow-to-arc transition through a series-wound resonance principle. The filamentary APGD is centimeter-level in the length but only several millimeters in diameter. Therefore, in order to obtain large-volume and uniform APGD, it is significant to study how to diffuse filamentary APGD in radial direction. With the increasing resonant frequency of alternating current discharge, excited particles (mainly including energetic electrons and trapped ions left from the previous half-cycle discharge) in the electrodes gap increase, which benefits obtaining stable self-sustaining APGD. In this paper, mechanism and law of the influence of resonant frequency on the diffusion of filamentary APGD in ambient air were studied. By comparing the photos of discharge plasma and waveforms of the discharge voltage and current, it is found that the volume of the glow discharge plasma enlargesmore » as the resonant frequency of the power supply increases. It is very significant and anticipating to study how to obtain stable, large-volume, and uniform APGD in ambient air by the resonant power supply.« less

Authors:
; ; ;  [1];  [2];  [3]
  1. State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China)
  2. State Grid Qingdao Power Supply Company, Qingdao 266000 (China)
  3. State Grid Chongqing Jiangbei Power Supply Company, Chongqing 401147 (China)
Publication Date:
OSTI Identifier:
22600157
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; ALTERNATING CURRENT; ATMOSPHERIC PRESSURE; COMPARATIVE EVALUATIONS; DIFFUSION; ELECTRIC POTENTIAL; ELECTRODES; GLOW DISCHARGES; IONS; LENGTH; PARTICLES; PLASMA; TAIL ELECTRONS; WAVE FORMS

Citation Formats

Wang, Yong Sheng, Ding, Wei Dong, Wang, Ya Nan, Wang, Jia Chen, Li, Fang, and Fan, Chuan. The effect of frequency on atmospheric pressure glow discharge in a pin-to-plate gap sustained by a resonant power supply. United States: N. p., 2016. Web. doi:10.1063/1.4953902.
Wang, Yong Sheng, Ding, Wei Dong, Wang, Ya Nan, Wang, Jia Chen, Li, Fang, & Fan, Chuan. The effect of frequency on atmospheric pressure glow discharge in a pin-to-plate gap sustained by a resonant power supply. United States. doi:10.1063/1.4953902.
Wang, Yong Sheng, Ding, Wei Dong, Wang, Ya Nan, Wang, Jia Chen, Li, Fang, and Fan, Chuan. 2016. "The effect of frequency on atmospheric pressure glow discharge in a pin-to-plate gap sustained by a resonant power supply". United States. doi:10.1063/1.4953902.
@article{osti_22600157,
title = {The effect of frequency on atmospheric pressure glow discharge in a pin-to-plate gap sustained by a resonant power supply},
author = {Wang, Yong Sheng and Ding, Wei Dong and Wang, Ya Nan and Wang, Jia Chen and Li, Fang and Fan, Chuan},
abstractNote = {More and more researchers have been attracted to the research of atmospheric pressure glow discharge (APGD) because of its great prospect in numerous industrial applications. Nevertheless, almost all of the industrial applications are based on achievement of stable, large-volume, and uniform APGD. In a previous study, stable filamentary APGD was obtained by applying a resonant power supply between pin-to-plate electrodes which could limit the peak value of discharge current to supress the glow-to-arc transition through a series-wound resonance principle. The filamentary APGD is centimeter-level in the length but only several millimeters in diameter. Therefore, in order to obtain large-volume and uniform APGD, it is significant to study how to diffuse filamentary APGD in radial direction. With the increasing resonant frequency of alternating current discharge, excited particles (mainly including energetic electrons and trapped ions left from the previous half-cycle discharge) in the electrodes gap increase, which benefits obtaining stable self-sustaining APGD. In this paper, mechanism and law of the influence of resonant frequency on the diffusion of filamentary APGD in ambient air were studied. By comparing the photos of discharge plasma and waveforms of the discharge voltage and current, it is found that the volume of the glow discharge plasma enlarges as the resonant frequency of the power supply increases. It is very significant and anticipating to study how to obtain stable, large-volume, and uniform APGD in ambient air by the resonant power supply.},
doi = {10.1063/1.4953902},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = 2016,
month = 6
}
  • The paper is devoted to studying the dusty plasma created by the injection of dust particles into the atmospheric pressure gas ionized by an electron beam of 85-120 keV energy. The beam current density was varied within 0.1-1.0 mA/cm2. The electron gun operated in the stationary regime. The behavior of dusty particles lighted by a laser 'knife' was observed with a digital video camera. Stable plate-like structures were observed in the cathode sheath of non-self-sustained discharge. Numerical simulation was performed by using the non-local model of the non-self-sustained discharge.
  • The experimental study of microwave-plasma interaction has been performed to demonstrate the transmission and attenuation of microwaves in atmospheric pressure glow discharge plasma. The cold-collisional plasma produced at atmospheric pressure can absorb the microwave energy because of its complex dielectric constant. The microwave of 10 GHz frequency was launched into the plasma and attenuation was measured as a function of electron plasma density, plasma thickness, electron-neutral collision frequency, etc. It was observed that the attenuation significantly depends on electron plasma density and thickness. The microwave attenuation measurement was also used as a diagnostic to estimate electron plasma density. It wasmore » validated by optical emission spectroscopic measurements with helium line intensity ratio method. Both the methods show good agreement.« less
  • A magnetic field is introduced to the dielectric-barrier discharge enhanced direct-current glow discharge for efficient plasma generation, with the discharge power of 2.7 W and total energy consumption reduced to 34% of the original. By spatially examining the emission spectra and plasma temperature, it is found that their peaks shift from edges to the center and the negative and anode glows merge into the positive column and disappear, accompanied by improvement of uniformity and chemical activity of the enlarged plasma. This lies in the enhancement of ionization in the curved and lengthened electron path and the dispersion of discharge domains.
  • Discharge modes, {alpha} and {gamma}, of a radio-frequency helium capacitively coupled discharge at atmospheric pressure were investigated with the discharge gap distance between electrodes varied from 1 to 5 mm. As similarly observed in other experiments, the {alpha} and {gamma} mode and the {alpha}-{gamma} mode transition were observed with large drops in the voltage (310-179 V) and the phase angle between the voltage and current (54 deg. -18 deg. ), and a contraction of the plasma volume (8.5-0.17 cm{sup 3}, at 3 mm gap distance). The discharge voltage where the {alpha}-{gamma} mode transition occurred versus the gap distance showed amore » similar behavior with the Paschen curve for a gas breakdown. Depending on the gap distance, normal and abnormal glow regimes were observed in the {alpha}mode. At 1 and 2 mm, the {alpha} mode remained in the abnormal glow discharge until the {alpha}-{gamma} mode transition occurred as the discharge current increases. At 3 mm, however, the {alpha} mode was excited as a normal glow discharge with a constant current density (17 mA/cm{sup 2}) but it became an abnormal glow discharge as the current increased. At 4 mm, the {alpha} mode was sustained as a normal glow discharge, then the transition to the {gamma} mode occurred. Using a simple resistor-capacitor circuit model and a {alpha} sheath breakdown model, the discharge modes and the mode transition properties were studied.« less
  • In this letter, atmospheric-pressure glow discharges in {gamma} mode with argon/nitrogen as the plasma-forming gas using water-cooled, bare copper electrodes driven by radio-frequency power supply at 13.56 MHz are achieved. The preliminary studies on the discharge characteristics show that, induced by the {alpha}-{gamma} coexisting mode or {gamma} mode discharge of argon, argon-nitrogen mixture with any mixing ratios, even pure nitrogen, can be employed to generate the stable {gamma} mode radio-frequency, atmospheric-pressure glow discharges and the discharge voltage rises with increasing the fraction of nitrogen in the argon-nitrogen mixture for a constant total gas flow rate.