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.
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Research Article| September 26 2006
Optogalvanic effect and measurement of gas temperature in an abnormal glow discharge
Bratislav M. Obradović;
Bratislav M. Obradović, Milorad M. Kuraica; Optogalvanic effect and measurement of gas temperature in an abnormal glow discharge. Appl. Phys. Lett. 25 September 2006; 89 (13): 131502. https://doi.org/10.1063/1.2352793
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