The {ν1+ 2ν2, ν1+ ν3} Bands of14N16O2: Line Positions and Intensities; Line Intensities in the ν1+ ν2+ ν3− ν2Hot Band

✍ Scribed by J.-Y. Mandin; V. Dana; A. Perrin; J.M. Flaud; C. Camy-Peyret; L. Régalia; A. Barbe

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 244 KB
• Volume: 181
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1996.7166

✦ Synopsis

High resolution Fourier transform absorption spectra of the 14 N 16 O 2 molecule recorded in the 2630-3510 cm 01 spectral region have been analysed and lines of the n 1 / n 3 band of this molecule have been assigned for K a values ranging from 0 to 10 and N values up to 55. The spin-rotation energy levels were very satisfactorily reproduced using a theoretical model which takes explicitly into account both the Coriolis interaction between the spin-rotation levels of the (101) vibrational state and those of ( 120) and the spin-rotation resonances within ( 101) and ( 120). As a consequence, precise vibrational band centers and rotational, spin-rotation, and coupling constants were obtained for the {( 120), ( 101))} interacting states of 14 N 16 O 2 . In addition, using a large set of individual n 1 / n 3 experimental line intensities we have determined precisely the n 1 / n 3 transition moment constants. Also from n 1 / n 2 / n 3 0 n 2 line intensities measured in this work, the transition moment operator of the n 1 / n 2 / n 3 0 n 2 hot band was found to be in agreement with the transition dipole moment of the corresponding cold band, namely, n 1 / n 3 . Finally, a comprehensive list of line positions and intensities of the n 1 / n 3 band of 14 N 16 O 2 has been generated at 3.4 mm.