Line mixing in the Q branches of the ν1+ν2 band of nitrous oxide and of the (1110)I←(0220) band of carbon dioxide
- 1 February 1992
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 96 (3) , 1715-1723
- https://doi.org/10.1063/1.462126
Abstract
Line mixing effects have been observed in absorption spectra recorded, at room temperature, with a Fourier spectrometer. They concern the Q branches of the ν1+ν2 band of N2O, centered at 1880.2 cm−1 and of the (1110)I←(0220) band of CO2, centered at 740.8 cm−1. For the N2O spectra, the gas was pure and its pressure has been raised up to more than 6 atm. The CO2 spectra were registered with a total gas pressure below 1 atm and the gas was either pure or mixed with argon or nitrogen. Comparison is made between the experimental results and computations taking into account the off‐diagonal elements of the relaxation matrix.Keywords
This publication has 41 references indexed in Scilit:
- Line mixing and finite duration of collision effects in pure CO2 infrared spectra: Fitting and scaling analysisThe Journal of Chemical Physics, 1991
- Study of collisional effects on band shapes of the ν1/2ν2 Fermi dyad in CO2 gas with stimulated Raman spectroscopy. I. Rotational and vibrational relaxation in the 2ν2 bandThe Journal of Chemical Physics, 1990
- Collision-induced population transfer in infrared absorption spectra. III. Temperature dependence of absorption in the Ar-broadened wing of CO2 ν3 bandThe Journal of Chemical Physics, 1990
- Collisionally induced population transfer effect in infrared absorption spectra. II. The wing of the Ar-broadened ν3 band of CO2The Journal of Chemical Physics, 1989
- Collisionally induced population transfer effect in infrared absorption spectra. I. A line-by-line coupling theory from resonances to the far wingsThe Journal of Chemical Physics, 1988
- Line shape in the low-frequency wing of self-broadened CO_2 linesApplied Optics, 1987
- Rotational collisional line broadening at high temperatures in the N2 fundamental Q-branch studied with stimulated Raman spectroscopyJournal de Physique, 1986
- Temperature dependence of the absorption in the region beyond the 43-μm band head of CO_2 1: Pure CO_2 caseApplied Optics, 1985
- Line Mixing by Collisions in the Far-Infrared Spectrum of AmmoniaThe Journal of Chemical Physics, 1969
- Pressure Broadening as a Prototype of RelaxationPhysical Review B, 1963