Line positions and N2-induced line parameters of the 00°3–00°0 band of 14N216O by comb-assisted cavity ring-down spectroscopy. (May 2019)

• Record Type: Journal Article
• Authors: Liu, G.-L.; Wang, J.; Tan, Y.; Kang, P.; Bi, Z.; Liu, A.-W.; Hu, S.-M.
• Is Part Of: Journal of quantitative spectroscopy & radiative transfer. Volume 229(2019)
• Page Start: 17
• Page End: 22
• Publication Date: 2019-05
• Subjects: Frequency comb -- Cavity ring-down spectroscopy -- Line position -- Nitrous oxide -- N2-induced line parameters; Spectrum analysis -- Periodicals; Radiation -- Periodicals; Analyse spectrale -- Périodiques; Rayonnement -- Périodiques; Radiation; Spectrum analysis; Periodicals; 543.0858
• DOI: 10.1016/j.jqsrt.2019.03.004
• Languages: English
• ISSNs: 0022-4073

Abstract

Highlights: The spectrum of 00°3 – 00°0 band of 14 N2 16 O is studied with a laser-locked cavity ring-down spectrometer referenced to an optical frequency comb. 88 line positions are determined with an uncertainty below 1.0 MHz. N2 -induced broadening and shift coefficients of 20 isolated lines were retrieved with the voigt and quadratic speed-dependence voigt profiles. Comparisons of line parameters determined in this work with those given in literatures are discussed. Abstract: Ro-vibrational transitions of the 00°3–00°0 band around 1.52 µm with line intensities in the order of 10 −24 to 10 −23 cm −1 /(molecule·cm −2 ) have been recorded using a comb-assisted laser-locked cavity ring-down spectrometer with high sensitivity as well as high precision. In total, 88 line positions were determined with a sub-MHz uncertainty (1-σ), better than previous experimental results by 1–2 order of magnitude. N2 -induced line shape parameters of 20 isolated transitions were derived by using the Voigt profile and the quadratic Speed-Dependent Voigt profile with relative uncertainties of 1–2% (1-σ). Comparisons of the line parameters determined in this work with literature experimental values are given.