Plasma propagation of a 13.56 MHz asymmetric surface barrier discharge in atmospheric pressure air

James Peter Dedrick; Rod Boswell; Pierre Audier; Herve Rabat; Dunpin Hong; Christine Charles

doi:10.1088/0022-3727/44/20/205202

Plasma propagation of a 13.56 MHz asymmetric surface barrier discharge in atmospheric pressure air

James Peter Dedrick, Rod Boswell, Pierre Audier, Herve Rabat, Dunpin Hong, Christine Charles

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The propagation of an rf asymmetric surface barrier discharge in atmospheric pressure air has been investigated. Measurements of the pulse-modulated 13.56 MHz voltage and current together with ICCD images of the plasma were recorded to study the visible plasma structure with respect to the rf pulses, time within the pulses and the rf waveforms. When exposing images over full rf pulses, which comprise over 150 oscillations of the applied voltage, clearly defined filamentary structures are observed indicating a strong memory effect. The discharge intensity decreases exponentially with distance from the electrode edge, and the average propagation length increases linearly with the applied voltage. Similar to some lower frequency asymmetric surface dielectric barrier discharges, two distinct breakdown events occur during one period of the voltage waveform. The number of filaments is found to be the same for both breakdown events, and collective effects are observed in both discharges.

Original language	English
Article number	205202
Number of pages	8
Journal	Journal of Physics D: Applied Physics
Volume	44
Issue number	20
Early online date	3 May 2011
DOIs	https://doi.org/10.1088/0022-3727/44/20/205202
Publication status	Published - 25 May 2011

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10.1088/0022-3727/44/20/205202

Cite this

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title = "Plasma propagation of a 13.56 MHz asymmetric surface barrier discharge in atmospheric pressure air",

abstract = "The propagation of an rf asymmetric surface barrier discharge in atmospheric pressure air has been investigated. Measurements of the pulse-modulated 13.56 MHz voltage and current together with ICCD images of the plasma were recorded to study the visible plasma structure with respect to the rf pulses, time within the pulses and the rf waveforms. When exposing images over full rf pulses, which comprise over 150 oscillations of the applied voltage, clearly defined filamentary structures are observed indicating a strong memory effect. The discharge intensity decreases exponentially with distance from the electrode edge, and the average propagation length increases linearly with the applied voltage. Similar to some lower frequency asymmetric surface dielectric barrier discharges, two distinct breakdown events occur during one period of the voltage waveform. The number of filaments is found to be the same for both breakdown events, and collective effects are observed in both discharges.",

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AU - Boswell, Rod

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AU - Rabat, Herve

AU - Hong, Dunpin

AU - Charles, Christine

PY - 2011/5/25

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