Analysis of Wavelength Modulation Spectra for Determination of OH Radical Concentration in an Atmospheric Pressure Laminar Premixed Flames

0540821 - ÚFCH JH 2021 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Nevrlý, V. - Bitala, P. - Klečka, V. - Vašinek, M. - Zelinger, Zdeněk - Suchánek, Jan - Dostál, Michal - Válek, V.
Analysis of Wavelength Modulation Spectra for Determination of OH Radical Concentration in an Atmospheric Pressure Laminar Premixed Flames.
Journal of Physics: Conference Series. Vol. 1829. Bristol: IOPScience, 2019, č. článku 012046. ISSN 1742-6588.
[International Conference on Spectral Lines Shapes. Dublin (IE), 18.06.2018-22.06.2018]
Grant CEP: GA MŠMT(CZ) LTC17071
Grant ostatní: European Cooperation in Science & Technology(XE) CM1404
Institucionální podpora: RVO:61388955
Klíčová slova: Tunable Lasers * Absorption Spectroscopy * Trace Gas
Obor OECD: Physical chemistry

This work is aimed at the application of wavelength modulation spectroscopy with the second harmonic detection for determination of OH radical concentration in laminar premixed flames of methane-air mixtures. Several hot water lines and two overtone OH transitions were identified in high-resolution absorption spectra measured in our experimental setup. Information on spectral line-shape parameters for selected OH transitions were extracted from the experimental data using relevant methods and approximations. An appropriate line-shape model was finally implemented into an automated least-square fitting procedure in order to quantify the local mole fraction of OH radical in an atmospheric pressure flames.
Trvalý link: http://hdl.handle.net/11104/0318418