Structure of the Surface Streamers of an AC Barrier Corona in Argon

Journal Article · Wed Dec 15 04:00:00 EST 2004 · Plasma Physics Reports

DOI:https://doi.org/10.1134/1.1839955· OSTI ID:20717477

Akishev, Yu S; Aponin, G I; Karal'nik, V B; Monich, A E; Trushkin, N I ^[1]

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1. Troitsk Institute for Innovation and Fusion Research, Troitsk, Moscow oblast, 142190 (Russian Federation)

Results are presented from experimental studies of the structure of an ac surface discharge excited by a metal needle over a plane dielectric surface. A barrier corona discharge was ignited in atmospheric-pressure argon at frequencies of the applied sinusoidal voltage from 50 Hz to 30 kHz. In experiments, the area of a dielectric covered with the discharge plasma increased with applied voltage. The discharge structure in diffuse and streamer modes was recorded using a digital camera and a high-speed image tube operating in a frame mode. It is found that, in the positive and negative half-periods of the applied voltage, the structure of the surface discharge is substantially different. The statistical characteristics of the branching surface streamers in the positive and negative half-periods are determined as functions of the voltage frequency. The most intense lines in the emission spectrum of the barrier corona are determined for both half-periods. The correlation between the dynamics of the emission intensity and the dynamics of the discharge current and voltage is investigated.

• OSTI ID: 20717477
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 12 Vol. 30; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
ATMOSPHERIC PRESSURE
BRANCHING RATIO
CORONA DISCHARGES
CORRELATIONS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRIC POTENTIAL
EMISSION SPECTRA
IMAGE TUBES
KHZ RANGE
PLASMA
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
SURFACES