Parameters of broadening of water molecule absorption lines by argon derived using different line profile models


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The water vapor absorption spectrum was measured in the spectral region 6700–7650 cm–1 with argon as a buffer gas. The room-temperature spectrum was measured using a Bruker IFS 125-HR Fourier Transform Spectrometer with high signal-to-noise ratio, with a spectral resolution of 0.01 cm–1, at argon pressures from 0 to 0.9 atm. The H2O absorption spectral line parameters are derived by fitting two line shape profiles (Voigt and speed-dependent Voigt) to the experimental spectrum. It is shown that the use of speed-dependent Voigt profile provides the best agreement with experimental data.

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T. Petrova

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

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Email: tanja@iao.ru
俄罗斯联邦, Tomsk, 634055

A. Solodov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

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Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055

A. Shcherbakov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055

V. Deichuli

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch; Tomsk State University

Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055; Tomsk, 634050

A. Solodov

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055

Yu. Ponomarev

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055

T. Chesnokova

V.E. Zuev Institute of Atmospheric Optics, Siberian Branch

Email: solodov@asd.iao.ru
俄罗斯联邦, Tomsk, 634055

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