CO2Emission in the 4-μm Region

Near infrared spectroscopy of carbon dioxide I. 16O12C16O line positions

“…The reason for the very good agreement of G 21112 values may be due to the fact that this is the strongest of the 2111n Fermi triad and thus yields the highest signal-to-noise measurements. It was also possible to calculate G 21111 from the results of Bailly and coworkers [33,37]. It is 5 Â 10 À4 cm À1 higher than our result, similar to the R92 value, which we consider reasonable agreement given the fact that it was derived from a sequence of six emission transitions and has an estimated 3r uncertainty of 2 Â 10 À4 cm À1 .…”

“…Chou et al [24] used a diode laser to measure lines near 6500 cm À1 . The extensive analysis of CO 2 emission spectra in the 3.0, 4.5, and 15 lm regions performed by Bailly and coworkers [25][26][27][28][29][30][31][32][33][34][35][36][37][38] merits special mention. Although these high-resolution FTS experiments did not probe NIR transitions directly, they did provide spectroscopic constants for many of the upper vibrational states involved in NIR transitions.…”

Variational Calculations of Rovibrational Energies for CO2

“…The most recent global fittings of this type for the CO 2 molecule and its isotopomers have been carried out by Tashkun et al (3,13,14), and they have been found to be very useful in predicting a number of unmeasured rovibrational transitions of the molecule (1,2,5,7,15). The effective Hamiltonians used in these global treatments of the CO 2 vibrational-rotational spectra are extended versions of the work originally developed by Chedin using perturbation theory with algebraic contact transformations (16).…”

12C16O2in Emission in the 4.5-μm Region: Transitionsv1vl2v3→v1vl2(v3−1) with (2v1+v2) = 6 Occurring between Highly Excited Vibrational States

“…They have been observed first in spectra of CH 4 ϩ O 2 low pressure flames recorded at a resolution of 0.020 cm Ϫ1 in the spectral range 1790 -5029 cm Ϫ1 (1). Then analogous transitions were assigned in emission spectra of CO 2 , vibrationally excited by active nitrogen at a resolution of 6.3 ϫ 10 Ϫ3 cm Ϫ1 in the 4 -5 m spectral region (2).…”