3 March 1997 Temperature dependence of CO2 and CO2-He mixture absorption coefficients in the Q-branch of (20o0)III ←0110 band
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Proceedings Volume 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy; (1997) https://doi.org/10.1117/12.267759
Event: 12th Symposium and School on High Resolution Molecular Spectroscopy, 1996, St. Petersburg, Russian Federation
Abstract
Absorption coefficients of pure carbon dioxide and CO2- He mixture have been measured in the Q-branch of the (20 degree(s)0)III $IMP 0110 vibration-rotation band (1880.994 cm-1) at different pressures from 0.2 to 2.7 atm and temperatures: 294, 314, 333, and 353 K. The experiments were carried out by means of a 1-m multi-pass White cell with an optical path up to 90 m. The tunable CO- laser operated at P20, 8 $IMP 7 (1880.9012 cm-1) transition was used as a radiation source. The absorption coefficients measured significantly exceeded the results of calculations with the Lorentzian shape due to important effects of line mixing. The temperature dependence of the difference between measured and calculated absorption coefficients are presented.
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Vladimir N. Aref'ev, Yu. I. Baranov, E. L. Baranova, "Temperature dependence of CO2 and CO2-He mixture absorption coefficients in the Q-branch of (20o0)III ←0110 band", Proc. SPIE 3090, 12th Symposium and School on High-Resolution Molecular Spectroscopy, (3 March 1997); doi: 10.1117/12.267759; https://doi.org/10.1117/12.267759
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