High-Resolution Study of thev5= 1 Level of CDF3

Rovibrational Spectroscopy of the v5 = 1 Level of 28SiDF3

“…[10] and [11]) are satisfied within their error limits. The only difference between the reductions concerns the correlation between fitted parameters.…”

“…The matrix of the effective rovibrational Hamiltonian is essentially the same as that described in more detail in the study of the 5 band of CDF 3 (10). Its part diagonal in the k and l quantum numbers was taken conventionally as…”

The Reduced Effective Vibration–Rotational Hamiltonian for the vt = 2 Levels of C3v Symmetric-Top Molecules

“…Equations [5][6][7][8] apply equally well also to the first overtone v t ϭ 2 and on this basis one would expect that the same collinearity problems would be encountered. The preliminary analysis of the direct l-type resonance transitions in the v 10 ϭ 2 vibrational state of CF 3 CCH (14) demonstrated, however, rather surprisingly that all four spectroscopic constants J , K , q 12 , d t can be determined for this state simultaneously without correlation problems.…”

“…The effect of the transformation on the molecular parameters can be written as follows (3,10): xxxz ϭ xxxz ϩ 12͑ A Ϫ B͒t, [4] q 12 ϭ q 12 ϩ 1 2 Fs, [5] d t ϭ d t ϩ 2q 22 s Ϫ 6At, [6] K ϭ K Ϫ 8q 12 s Ϫ 2Fs 2 , [7] J ϭ J ϩ 8q 12 s ϩ 2Fs 2 , [8] where…”

Absolute frequency measurements of CHF_3 Doppler-free ro-vibrational transitions at 86 μm

“…In the former case, bolometric detection performed by a color-center laser on a cold (4 K) CHF 3 beam was used to observe saturation resonances in the υ 1 fundamental band (around 3035 cm −1 ) with a full width at half-maximum (FWHM) of 10 MHz [14]. In the latter experiment, sub-Doppler absorption features with a FWHM as low as 200 kHz were recorded by CO 2 laser-sideband spectroscopy in the CDF 3 υ 5 fundamental band [15].…”