Cathode fall measurement in a dielectric barrier discharge in helium

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4834515· OSTI ID:22218463

Hao, Yanpeng; Zheng, Bin; Liu, Yaoge ^[1]

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1. School of Electric Power, South China University of Technology, Guangzhou 510640 (China)

A method based on the “zero-length voltage” extrapolation is proposed to measure cathode fall in a dielectric barrier discharge. Starting, stable, and discharge-maintaining voltages were measured to obtain the extrapolation zero-length voltage. Under our experimental conditions, the “zero-length voltage” gave a cathode fall of about 185 V. Based on the known thickness of the cathode fall region, the spatial distribution of the electric field strength in dielectric barrier discharge in atmospheric helium is determined. The strong cathode fall with a maximum field value of approximately 9.25 kV/cm was typical for the glow mode of the discharge.

• OSTI ID: 22218463
• Journal Information: Physics of Plasmas, Vol. 20, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
APPROXIMATIONS
CATHODES
DIELECTRIC MATERIALS
ELECTRIC FIELDS
ELECTRIC POTENTIAL
EXTRAPOLATION
GLOW DISCHARGES
HELIUM
PLASMA
PLASMA DIAGNOSTICS
SPATIAL DISTRIBUTION