D2O self-broadening study in 2.5 μ

N. Lavrentieva; A. Lugovskoi; L. Sinitsa; A. Sherbakov; O. Svetlichny

doi:10.1117/12.2074813

25 November 2014 D₂O self-broadening study in 2.5 μ

N. Lavrentieva, A. Lugovskoi, L. Sinitsa, A. Sherbakov, O. Svetlichny

Proceedings Volume 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 92920O (2014) https://doi.org/10.1117/12.2074813
Event: 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2014, Novosibirsk, Russian Federation

Abstract

The absorption spectra of the D₂О monomer in 3600…4200 cm-1 were recorded using Fourier Transform spectrometer FS-125M at room temperature and pressure of 15 and 33 mbar with spectral resolution of 0.03 cm^-1 using 2.5 cm long absorption cell. Strong unblended D₂O lines lying on the wing of the H₂O stretching band were used to determine the line broadening parameters. They were determined from the line profile by Program VxpProfile. The differences between fitted line profiles and experimental ones do not exceed 2%. Registered D2O lines belong to (011) - (000) and (110) - (000) bands of the second triad. Self-broadening coefficients vary from 0.27 cm^-1/atm to 0.445 cm^-1/atm and they exceed 3 times the D₂O-N2 line broadening coefficients in the v3. Calculations of self-broadening coefficients of the D2O lines were performed using semiempirical method based on the impact theory of broadening and included the correction factors. The calculated results well agree with experimental data.

Citation Download Citation

N. Lavrentieva, A. Lugovskoi, L. Sinitsa, A. Sherbakov, and O. Svetlichny "D₂O self-broadening study in 2.5 μ", Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 92920O (25 November 2014); https://doi.org/10.1117/12.2074813

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