Share Email Print
cover

Proceedings Paper

The self-broadened, isolated CO2 spectral line shape investigation
Author(s): Konstantin Yu. Osipov; Venedikt A. Kapitanov; Alexander E. Protasevich; Yakov Y. Ponurovskiy
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The measurements of "isolated" CO2 line (6231.6 cm-1) absorption spectra in wide pressure range from 2 to 1000 mbar were performed on 3-channel high-resolution diode laser spectrometer. 4 theoretical models used for the description of lineshape contour: usual Voigt, Hard-collisional (Rautian), Soft-collisional (Galatry), and Speed-dependent Voigt (Boone). LabView based software used for the testing of current lineshape models. This software performed the nonlinear least-squares fit of the model spectrum to the experimental spectra recorded at each pressure individually. The detailed research of weak lines influence to the retrieved parameters of "isolated" CO2 (6231.6 cm-1, R4 band 30013- 00001) is provided. It is shown that the use of Rautian and Galatry lineshape models leads to a significant deviation from linear of the narrowing coefficient pressure dependence while coming to the high pressures range. Most appropriate for the common description of whole experimental spectra in entire range of pressures (up to 1000 mbar) is the Speed- Dependent (Boone) profile.

Paper Details

Date Published: 25 November 2014
PDF: 6 pages
Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 929203 (25 November 2014); doi: 10.1117/12.2075282
Show Author Affiliations
Konstantin Yu. Osipov, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
National Research Tomsk Polytechnic Univ. (Russian Federation)
Venedikt A. Kapitanov, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Alexander E. Protasevich, V.E. Zuev Institute of Atmospheric Optics (Russian Federation)
Yakov Y. Ponurovskiy, A.M. Prokhorov General Physics Institute (Russian Federation)


Published in SPIE Proceedings Vol. 9292:
20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

© SPIE. Terms of Use
Back to Top