Corona physics and diagnostics

Journal Article · Fri Mar 01 04:00:00 EST 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50125· OSTI ID:285356

Sigmond, R S ^[1]

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1. The Electron and Ion Physics Research Group, Physics Department, The Norwegian Institute of Technology, N-7034 Trondheim (Norway)

The criterions for oscillations in DC-fed coronas are discussed, both for the well-understood negative Trichel pulse coronas and for the unexplained positive glow pulse coronas. Trichel-like pulses occur also in non-electron-attaching gases, due to the external circuit impedance, and this lowers the sensitivity of Trichel coronas as detectors for electronegative gas traces. Pulse excitation of positive glow coronas in argon with added trace gases show that the corona stability and resonance frequency strongly depend on the trace gas type and concentration, but the physics involved is unknown. Finally, it is shown that the low-current U(I) curve of relaxation-pulsed coronas always must have a negative slope, equal to the negative of the series resistance. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 285356
• Report Number(s): CONF-950749--
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 363; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CORONA DISCHARGES
DC SYSTEMS
ELECTRON ATTACHMENT
IMPURITIES
IV CHARACTERISTIC
OSCILLATIONS
RESONANCE