Rapid transition from glow discharge to thermal arc has been a common problem in generating stable high-power non-thermal plasmas especially at ambient conditions. A sustained diffusive gliding arc discharge was generated in a large volume in atmospheric pressure air, driven by an alternating current (AC) power source. The plasma column extended beyond the water-cooled stainless steel electrodes and was stabilized by matching the flow speed of the turbulent air jet with the rated output power. Comprehensive investigations were performed using high-speed movies measured over the plasma column, synchronized with simultaneously recorded current and voltage waveforms. Dynamic details of the novel non-equilibrium discharge are revealed, which is characterized by a sinusoidal current waveform with amplitude stabilized at around 200 mA intermediate between thermal arc and glow discharge, shedding light to the governing mechanism of the sustained spark-suppressed AC gliding arc discharge.
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8 December 2014
Research Article|
December 10 2014
Sustained diffusive alternating current gliding arc discharge in atmospheric pressure air
Jiajian Zhu
;
Jiajian Zhu
1Division of Combustion Physics,
Lund University
, P.O. Box 118, S-221 00 Lund, Sweden
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Jinlong Gao;
Jinlong Gao
1Division of Combustion Physics,
Lund University
, P.O. Box 118, S-221 00 Lund, Sweden
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Zhongshan Li
;
Zhongshan Li
a)
1Division of Combustion Physics,
Lund University
, P.O. Box 118, S-221 00 Lund, Sweden
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Andreas Ehn;
Andreas Ehn
1Division of Combustion Physics,
Lund University
, P.O. Box 118, S-221 00 Lund, Sweden
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Marcus Aldén;
Marcus Aldén
1Division of Combustion Physics,
Lund University
, P.O. Box 118, S-221 00 Lund, Sweden
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Anders Larsson;
Anders Larsson
2
Swedish Defence Research Agency
, SE-164 90 Stockholm, Sweden
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Yukihiro Kusano
Yukihiro Kusano
3Department of Wind Energy, Section for Composites and Materials Mechanics,
Technical University of Denmark
, Risø Campus, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
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a)
Email: [email protected]
Appl. Phys. Lett. 105, 234102 (2014)
Article history
Received:
October 06 2014
Accepted:
November 26 2014
Citation
Jiajian Zhu, Jinlong Gao, Zhongshan Li, Andreas Ehn, Marcus Aldén, Anders Larsson, Yukihiro Kusano; Sustained diffusive alternating current gliding arc discharge in atmospheric pressure air. Appl. Phys. Lett. 8 December 2014; 105 (23): 234102. https://doi.org/10.1063/1.4903781
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