Air-perturbed line shifts for 12C16O2 in 00o1-00o0 band near head at high temperatures

A. F. Aushev; A. V. Gusev; Vladimir M. Osipov; V. V. Tsukanov

doi:10.1117/12.267787

3 March 1997 Air-perturbed line shifts for ¹²C¹⁶O₂ in 00^o1-00^o0 band near head at high temperatures

A. F. Aushev, A. V. Gusev, Vladimir M. Osipov, V. V. Tsukanov

Proceedings Volume 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy; (1997) https://doi.org/10.1117/12.267787
Event: 12th Symposium and School on High Resolution Molecular Spectroscopy, 1996, St. Petersburg, Russian Federation

Abstract

The subject of this paper is the measured air-shifting coefficients for R70-R110 emission lines of the ¹²C¹⁶O₂ in 4.3 micrometer band at temperatures of about 2000 K. The spectra were recorded on a Littrov type grating monochromator with a resolution of about 0.05 cm^-1. A nonlinear least-squares fitting technique was used. The absolute error in lineshifts was estimated to be about 0.002 cm^-1. The significant shifts (reaching 50 times the absolute uncertainty of experimental frequencies), strongly depending on the rotational quantum number were measured. The obtained results were compared with our previous measurements pressure-shift of R54-R72 lines at room temperature.

Citation Download Citation

A. F. Aushev, A. V. Gusev, Vladimir M. Osipov, and V. V. Tsukanov "Air-perturbed line shifts for ¹²C¹⁶O₂ in 00^o1-00^o0 band near head at high temperatures", Proc. SPIE 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy, (3 March 1997); https://doi.org/10.1117/12.267787

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