Microsecond time-resolved Fourier transform infrared analytics in a low pressure glow discharge reactor

A low pressure glow discharge reactor has been designed to allow time-resolved infrared spectroscopic investigation of the discharge zone in practical conditions. The benefits of such reactor are demonstrated through the study of the evolution in the infrared spectra of air/CO(2) gas mixture at the...

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Bibliographic Details
Published inReview of scientific instruments Vol. 81; no. 10; p. 103111
Main Authors Rivallan, Mickaël, Aiello, Sébastien, Thibault-Starzyk, Frédéric
Format Journal Article
LanguageEnglish
Published United States 01.10.2010
Subjects
Plasma Gases - chemistry
Pressure
Spectroscopy, Fourier Transform Infrared - instrumentation
Time Factors
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Summary:A low pressure glow discharge reactor has been designed to allow time-resolved infrared spectroscopic investigation of the discharge zone in practical conditions. The benefits of such reactor are demonstrated through the study of the evolution in the infrared spectra of air/CO(2) gas mixture at the microsecond time-scale. It has been shown that the spectra are greatly affected by the electrical discharge in the 2400-2200 cm(-1) region, where the asymmetric stretch mode of CO(2) falls. The CO(2) molecules are excited through a collision with excited N(2) molecules, where the transfer of energy occurs by a resonant effect. The mechanisms involved are reversible and following plasma pulses.
ISSN:1089-7623
DOI:10.1063/1.3492094