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A New Line-Shape Asymmetry Model for Wavelength Modulation Spectroscopy in Gaseous Flows
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SYSNO ASEP 0500338 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A New Line-Shape Asymmetry Model for Wavelength Modulation Spectroscopy in Gaseous Flows Tvůrce(i) Nevrlý, V. (CZ)
Klečka, V. (CZ)
Vašinek, M. (CZ)
Válek, V. (CZ)
Suchánek, Jan (UFCH-W) RID, ORCID
Dostál, Michal (UFCH-W) RID, ORCID, SAI
Hric, B. (CZ)
Bitala, P. (CZ)
Zelinger, Zdeněk (UFCH-W) RID, ORCIDZdroj.dok. Measurement Science Review. - : Sciendo - ISSN 1335-8871
Roč. 18, č. 4 (2018), s. 158-161Poč.str. 4 s. Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova laser spectrometer ; calibration ; frequency ; gas sensing ; spectroscopy ; modulation ; model ; line-shape asymmetry Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP LTC17071 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA17-05167s GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000441577700004 EID SCOPUS 85052156483 DOI 10.1515/msr-2018-0022 Anotace This communication reports technical notes on the development and application of an automated line-shape fitting procedure for wavelength modulation spectroscopy (WMS). Near-infrared transitions of carbon dioxide (CO2) around 1573 nm were measured in vertical cold (non-reacting) flow of CO2 at atmospheric pressure using WMS with demodulation at second harmonic frequency. Semi-empirical model based on the set of so-called Gabor functions was developed and parameters of Lorentzian line-shape profile and its asymmetry resulting from simultaneous frequency and amplitude response of the current-modulated semiconductor laser were determined. Nonlinear least-square fitting procedure employing differential evolution algorithm was successfully utilized for performing this task. Line-shape fitting procedure enabling efficient signal de-noising and background subtraction of wavelength modulation spectra was implemented into an open-source code. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2019
Počet záznamů: 1