The 4VOH Absorption Spectrum of HDO

High-Order Resonance Interactions in HDO: Analysis of the Absorption Spectrum in the 14980–15350 cm−1 Spectral Region

“…A similar difficulty was found in the assignment process of the perturber of the (004) state. Our analysis (1) showed that the (004) state is slightly perturbed by the (052) state, while this perturber is assigned as (0 11 0) in Ref. (7).…”

“…The large difference between the OD and OH stretching frequencies ( 1 ϭ 2823.9 and 3 ϭ 3893.40 cm Ϫ1 , respectively) prevents efficient Coriolis-type interaction in the HDO molecule and gives rise to a well-isolated sequence of the (00V 3 ) vibrational states up to V 3 ϭ 5. However, we have shown that the (004) state is slightly perturbed by a local resonance with the (052) highly excited bending state (1).…”

“…(1). The intracavity laser absorption spectroscopy (ICLAS) technique was used to record the HDO overtone spectrum between 13 160 and 17 100 cm Ϫ1 .…”

“…The part of the ICLAS spectrum between 13 560 and 14 050 cm Ϫ1 dominated by the 4 3 band transitions was analyzed in Ref. (1) leading to the detailed knowledge of the (004) state rotational energy levels structure. (Note that, contrary to the recommendations of IUPAC, we use the traditional labeling of the stretching vibration with 1 and 3 standing for the OD and OH stretching, respectively.)…”

Emission Spectrum of Hot HDO in the 380–2190 cm−1 Region

“…Most notably, Campargue and co-workers (32)(33)(34)(35)(36) have recently used the ultrasensitive technique of intracavity laser absorption spectroscopy to measure a number of overtone bands. Our contribution in this area has been to record long path Fourier transform absorption spectra in the 16300-22800 cm ¢ region (37).…”