Control of diffuse and filamentary modes in an RF asymmetric surface barrier discharge in atmospheric-pressure argon

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

doi:10.1088/0963-0252/21/5/055016

Control of diffuse and filamentary modes in an RF asymmetric surface barrier discharge in atmospheric-pressure argon

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

Physics

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

Abstract

The controlled generation of diffuse and filamentary modes is demonstrated in a radio-frequency (RF, 13.56 MHz) asymmetric surface barrier discharge in atmospheric-pressure argon. For both continuous and pulsed input power, it is shown that the transition from a streamer-driven filamentary discharge at breakdown to a low-current, diffuse plasma can be attained. Fast imaging is used to visualize the structure of the discharge and examine the transition between three distinct modes: moving filaments, branching filaments and a filament-free plasma. The breakdown of the pulsed discharge is studied for pulse periods ranging from ≤5 µs to 1 ms to investigate the mechanism behind the generation of the diffuse mode.

Original language	English
Article number	055016
Number of pages	7
Journal	Plasma sources science & technology
Volume	21
Issue number	5
Early online date	6 Sept 2012
DOIs	https://doi.org/10.1088/0963-0252/21/5/055016
Publication status	Published - Oct 2012

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10.1088/0963-0252/21/5/055016

Cite this

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title = "Control of diffuse and filamentary modes in an RF asymmetric surface barrier discharge in atmospheric-pressure argon",

abstract = "The controlled generation of diffuse and filamentary modes is demonstrated in a radio-frequency (RF, 13.56 MHz) asymmetric surface barrier discharge in atmospheric-pressure argon. For both continuous and pulsed input power, it is shown that the transition from a streamer-driven filamentary discharge at breakdown to a low-current, diffuse plasma can be attained. Fast imaging is used to visualize the structure of the discharge and examine the transition between three distinct modes: moving filaments, branching filaments and a filament-free plasma. The breakdown of the pulsed discharge is studied for pulse periods ranging from ≤5 µs to 1 ms to investigate the mechanism behind the generation of the diffuse mode.",

author = "Dedrick, {James Peter} and Rod Boswell and Herve Rabat and Dunpin Hong and Christine Charles",

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T1 - Control of diffuse and filamentary modes in an RF asymmetric surface barrier discharge in atmospheric-pressure argon

AU - Dedrick, James Peter

AU - Boswell, Rod

AU - Rabat, Herve

AU - Hong, Dunpin

AU - Charles, Christine

PY - 2012/10

Y1 - 2012/10

N2 - The controlled generation of diffuse and filamentary modes is demonstrated in a radio-frequency (RF, 13.56 MHz) asymmetric surface barrier discharge in atmospheric-pressure argon. For both continuous and pulsed input power, it is shown that the transition from a streamer-driven filamentary discharge at breakdown to a low-current, diffuse plasma can be attained. Fast imaging is used to visualize the structure of the discharge and examine the transition between three distinct modes: moving filaments, branching filaments and a filament-free plasma. The breakdown of the pulsed discharge is studied for pulse periods ranging from ≤5 µs to 1 ms to investigate the mechanism behind the generation of the diffuse mode.

AB - The controlled generation of diffuse and filamentary modes is demonstrated in a radio-frequency (RF, 13.56 MHz) asymmetric surface barrier discharge in atmospheric-pressure argon. For both continuous and pulsed input power, it is shown that the transition from a streamer-driven filamentary discharge at breakdown to a low-current, diffuse plasma can be attained. Fast imaging is used to visualize the structure of the discharge and examine the transition between three distinct modes: moving filaments, branching filaments and a filament-free plasma. The breakdown of the pulsed discharge is studied for pulse periods ranging from ≤5 µs to 1 ms to investigate the mechanism behind the generation of the diffuse mode.

U2 - 10.1088/0963-0252/21/5/055016

DO - 10.1088/0963-0252/21/5/055016

M3 - Article

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VL - 21

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