Measured and calculated parameters of water vapor line contour induced by hydrogen and helium pressure in the 1.4 µm region

V. Zeninari; B. Parvitte; D. Courtois; I. Pouchet; G. Durry; N. N. Lavrentieva; Yurii N. Ponomarev

doi:10.1117/12.545682

12 January 2004 Measured and calculated parameters of water vapor line contour induced by hydrogen and helium pressure in the 1.4 μm region

V. Zeninari, B. Parvitte, D. Courtois, I. Pouchet, G. Durry, N. N. Lavrentieva, Yurii N. Ponomarev

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Proceedings Volume 5311, 14th Symposium on High-Resolution Molecular Spectroscopy; (2004) https://doi.org/10.1117/12.545682
Event: 14th Symposium on High-Resolution Molecular Spectroscopy, 2003, Krasnoyarsk, Russian Federation

Abstract

A near-infrared diode laser spectrometer was used under laboratory conditions to measure the H₂O line strengths and shifts by H₂ and He pressure near 1.39 μm. The hydrogen and helium broadened half-widths and shifts were measured for 5 transitions. These lines from the v₁ + v₃ and 2v₁ bands were selected because they are used for the “Spectrometre a diodes lasers” SDLA spectrometer (France) and to complete a set of isolated and quite strong lines with different J parameters. The experimental and calculated data are compared based on the semiempirical approximation in the absorption line broadening and shift. The helium pressure-induced shift coefficients and the hydrogen pressure-induced shift coefficients have opposite signs.

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V. Zeninari, B. Parvitte, D. Courtois, I. Pouchet, G. Durry, N. N. Lavrentieva, and Yurii N. Ponomarev "Measured and calculated parameters of water vapor line contour induced by hydrogen and helium pressure in the 1.4 μm region", Proc. SPIE 5311, 14th Symposium on High-Resolution Molecular Spectroscopy, (12 January 2004); https://doi.org/10.1117/12.545682

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KEYWORDS

Helium

Hydrogen

Spectroscopy

Absorption

Semiconductor lasers

Laser spectroscopy

Interferometers

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