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Analyses of FT spectra of C2V ozone isotopologues in the 4500–5700 cm−1 region: 16O18O16O, 18O16O18O and 18O3.

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Title: Analyses of FT spectra of C2V ozone isotopologues in the 4500–5700 cm−1 region: 16O18O16O, 18O16O18O and 18O3.
Authors: Barbe, A.1, De Backer, M.-R.1 mr.debacker@univ-reims.fr, Starikova, E.2,3, Thomas, X.1, Tyuterev, Vl.G.1
Source: Journal of Quantitative Spectroscopy & Radiative Transfer. Dec2014, Vol. 149, p51-63. 13p.
Subjects: Isotopologues, Cavity-ringdown spectroscopy, Fourier transform spectroscopy, High resolution spectroscopy, Infrared spectra
Abstract: This work continues the systematic investigation of high resolution infrared spectra of 18 O enriched ozone isotopologues in the 4500–6300 cm −1 spectral range. So far, the 16 O 18 O 16 O and 18 O 16 O 18 O spectra have been recorded and analysed using Fourier Transform Spectrometer (FTS) below 5000 cm −1 and using high sensitivity Cavity Ring-Down Spectroscopy above 6000 cm −1 . In order to fill the gap between 5000 and 6000 cm −1 , new infrared spectra were recorded with the Reims FTS. The analyses of the 2ν 1 +ν 2 +3ν 3 band of 16 O 18 O 16 O and of the 5ν 3 , ν 1 +2ν 2 +3ν 3 and ν 1 +5ν 3 bands of 18 O 16 O 18 O are reported. New ν 1 +2ν 2 +3ν 3 and ν 1 +5ν 3 bands of 18 O 3 were also observed and analysed. Observed line positions were fitted using effective Hamiltonian models accounting for the dark state perturbations. The derived band centres and rotational constants are in a good agreement with new theoretical calculations from the molecular potential function. [ABSTRACT FROM AUTHOR]
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Abstract:This work continues the systematic investigation of high resolution infrared spectra of 18 O enriched ozone isotopologues in the 4500–6300 cm −1 spectral range. So far, the 16 O 18 O 16 O and 18 O 16 O 18 O spectra have been recorded and analysed using Fourier Transform Spectrometer (FTS) below 5000 cm −1 and using high sensitivity Cavity Ring-Down Spectroscopy above 6000 cm −1 . In order to fill the gap between 5000 and 6000 cm −1 , new infrared spectra were recorded with the Reims FTS. The analyses of the 2ν 1 +ν 2 +3ν 3 band of 16 O 18 O 16 O and of the 5ν 3 , ν 1 +2ν 2 +3ν 3 and ν 1 +5ν 3 bands of 18 O 16 O 18 O are reported. New ν 1 +2ν 2 +3ν 3 and ν 1 +5ν 3 bands of 18 O 3 were also observed and analysed. Observed line positions were fitted using effective Hamiltonian models accounting for the dark state perturbations. The derived band centres and rotational constants are in a good agreement with new theoretical calculations from the molecular potential function. [ABSTRACT FROM AUTHOR]
ISSN:00224073
DOI:10.1016/j.jqsrt.2014.07.018