Optogalvanic effect and measurement of gas temperature in an abnormal glow discharge

Journal Article · Mon Sep 25 04:00:00 EDT 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2352793· OSTI ID:20860924

Obradovic, Bratislav M; Kuraica, Milorad M ^[1]

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1. Faculty of Physics, University of Belgrade, P.O. Box 368, 11001 Belgrade (Serbia)

Axial distribution of the gas temperature in an abnormal glow discharge in argon is simultaneously determined by laser optogalvanic and absorption spectroscopy methods. Temperature distributions obtained by two different methods are in a fair agreement except in the boundary region between the cathode fall and the negative glow. Systematically lower temperature in this region obtained by optogalvanic spectroscopy is a consequence of the nature of optogalvanic effect, which, in some circumstances, cannot be identified with spectral line profile.

• OSTI ID: 20860924
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 89; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION SPECTROSCOPY
ARGON
BOUNDARY LAYERS
CATHODES
GLOW DISCHARGES
LASERS
PLASMA
TEMPERATURE DISTRIBUTION