CH spectroscopic observables in a He-CH4 and N2-CH4 atmospheric pressure dielectric barrier discharges

Abstract

In this paper we report on a spectroscopic study on CH observables including laser inducedfluorescence (LIF) on CH and emission spectroscopy on the CH Ger¨o band. Directobservation by LIF has been found to be very difficult, both because of technical difficultiesand an overall low CH density in the discharge. Analysis of CH(A) emission shows that it isdue to CH4 dissociative excitation processes, by He(23S) in He-based mixtures, and byelectron impact in N2-CH4. The analysis of spectra evidences the need for more preciseknowledge on the collision quenching of electronically excited states and on the electronenergy distribution function.


Tutti gli autori

  • G. Dilecce ; P.F. Ambrico ; S. De Benedictis

Titolo volume/Rivista

Journal of physics. D, Applied physics


Anno di pubblicazione

2010

ISSN

1361-6463

ISBN

Non Disponibile


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Nessuna citazione

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Settori ERC

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Codici ASJC

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