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Characterization of an AC glow-type gliding arc discharge in atmospheric air with a current-voltage lumped model

Kong, Chengdong LU ; Gao, Jinlong LU ; Zhu, Jiajian LU ; Ehn, Andreas LU ; Aldén, Marcus LU and Li, Zhongshan LU (2017) In Physics of Plasmas 24(9).
Abstract

Quantitative characterization of a high-power glow-mode gliding arc (GM-GA) discharge operated in open air is performed using a current-voltage lumped model that is built from the perspective of energy balance and electron conservation. The GM-GA discharge is powered by a 35 kHz alternating current power supply. Instantaneous images of the discharge volume are recorded using a high-speed camera at a frame rate of 50 kHz, synchronized with the simultaneously recorded current and voltage waveforms. Detailed analyzation indicates that the electrical input power is dissipated mainly through the transport of vibrationally excited nitrogen and other active radicals (such as O). The plasma is quite non-thermal with the ratio of vibrational and... (More)

Quantitative characterization of a high-power glow-mode gliding arc (GM-GA) discharge operated in open air is performed using a current-voltage lumped model that is built from the perspective of energy balance and electron conservation. The GM-GA discharge is powered by a 35 kHz alternating current power supply. Instantaneous images of the discharge volume are recorded using a high-speed camera at a frame rate of 50 kHz, synchronized with the simultaneously recorded current and voltage waveforms. Detailed analyzation indicates that the electrical input power is dissipated mainly through the transport of vibrationally excited nitrogen and other active radicals (such as O). The plasma is quite non-thermal with the ratio of vibrational and translational temperatures (Tv/Tg) larger than 2 due to the intense energy dissipation. The electron number density reaches 3 × 1019 m-3 and is always above the steady value owing to the short cutting events, which can recover the electron density to a relatively large value and limits the maximum length of the gliding arc. The slow decaying rate of electrons is probably attributed to the decomposed state of a hot gaseous mixture and the related associative ionization.

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type
Contribution to journal
publication status
published
subject
in
Physics of Plasmas
volume
24
issue
9
publisher
American Institute of Physics
external identifiers
  • scopus:85029293736
  • wos:000412107400105
ISSN
1070-664X
DOI
10.1063/1.4986296
language
English
LU publication?
yes
id
7984dd87-f874-44b6-a723-7f9e972afa57
date added to LUP
2017-10-02 13:02:25
date last changed
2018-01-16 13:20:12
@article{7984dd87-f874-44b6-a723-7f9e972afa57,
  abstract     = {<p>Quantitative characterization of a high-power glow-mode gliding arc (GM-GA) discharge operated in open air is performed using a current-voltage lumped model that is built from the perspective of energy balance and electron conservation. The GM-GA discharge is powered by a 35 kHz alternating current power supply. Instantaneous images of the discharge volume are recorded using a high-speed camera at a frame rate of 50 kHz, synchronized with the simultaneously recorded current and voltage waveforms. Detailed analyzation indicates that the electrical input power is dissipated mainly through the transport of vibrationally excited nitrogen and other active radicals (such as O). The plasma is quite non-thermal with the ratio of vibrational and translational temperatures (T<sub>v</sub>/T<sub>g</sub>) larger than 2 due to the intense energy dissipation. The electron number density reaches 3 × 10<sup>19</sup> m<sup>-3</sup> and is always above the steady value owing to the short cutting events, which can recover the electron density to a relatively large value and limits the maximum length of the gliding arc. The slow decaying rate of electrons is probably attributed to the decomposed state of a hot gaseous mixture and the related associative ionization.</p>},
  articleno    = {093515},
  author       = {Kong, Chengdong and Gao, Jinlong and Zhu, Jiajian and Ehn, Andreas and Aldén, Marcus and Li, Zhongshan},
  issn         = {1070-664X},
  language     = {eng},
  month        = {09},
  number       = {9},
  publisher    = {American Institute of Physics},
  series       = {Physics of Plasmas},
  title        = {Characterization of an AC glow-type gliding arc discharge in atmospheric air with a current-voltage lumped model},
  url          = {http://dx.doi.org/10.1063/1.4986296},
  volume       = {24},
  year         = {2017},
}