Mode transition in radio-frequency atmospheric argon discharges with and without dielectric barriers

Journal Article · Sun Mar 04 23:00:00 EST 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2711413· OSTI ID:20971861

Shi, J J; Kong, M G ^[1]

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1. Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

In this letter, basic characteristics of glow modes and their mode transition are studied for radio-frequency (rf) atmospheric argon discharges with bare and dielectrically insulated electrodes. Through input power control, large-volume rf atmospheric argon discharges with bare electrodes are achieved in the {alpha} mode via an abrupt transition from a constricted {gamma} mode, whereas dielectrically insulated electrodes result in large argon discharges in both the {alpha} and {gamma} modes with gradual mode transition. Current dependence of the 750 nm line intensity and of the gas temperature are shown to capture clearly the signature of mode transition.

• OSTI ID: 20971861
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 90; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
BOUNDARY LAYERS
DIELECTRIC MATERIALS
ELECTRODES
ELECTRON TEMPERATURE
GLOW DISCHARGES
HIGH-FREQUENCY DISCHARGES
ION TEMPERATURE
PLASMA
PLASMA INSTABILITY
RADIOWAVE RADIATION