Original title: Light emission and temperatures during the DC afterglow in nitrogen-oxygen mixtures
Translated title: Intenzita záření a teplota vyhasínajícího stejnosměrného výboje v směsi dusík-kyslík
Authors: Krčma, F. ; Mazánková, V. ; Soural, I. ; Šimek, Milan
Document type: Papers
Conference/Event: International Conference on Phenomena in Ionized Gases/28./, Prague (CZ), 2007-07-15 / 2007-07-20
Year: 2007
Language: eng
Abstract: [eng] [cze]
This contribution focuses on the oxygen influence to the pure nitrogen post-discharge. The DC flowing afterglow in Pyrex tube at discharge current of 150 mA and pressure of 1000 Pa was studied by optical emission spectroscopy at decay times in the range of 3 – 45 ms. Band head intensities of 1st and 2nd positive and 1st negative nitrogen spectral systems were observed as a function of oxygen admixture ( 0-5000 ppm). The nitrogen pink afterglow effect was observed in all cases. Temperature during the afterglow was determined by two different ways. The first one was the direct calculation of the rotational temperature of nitrogen 1st positive 2-0 band using numeric simulation. The second way was the strongly temperature-sensitive ratio of band head intensities originating from 11 and 12 vibrational levels of N2 (B 3g) state because these levels were populated during the afterglow mainly by the atomic nitrogen recombination. Byl studován vliv stopových příměsí kyslíku na spektrální charakteristiky vyhasínajícího dusíkového DC výboje.
Keywords: DC afterglow; emission; nitrogen; oxygen
Project no.: CEZ:AV0Z20430508 (CEP)
Host item entry: XXVIII International Conference on Phenomena in Ionized gases. Proceedings, ISBN 978-80-87026-01-4

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0149209

Permalink: http://www.nusl.cz/ntk/nusl-37496


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