New High-Resolution Analysis of the ν3 Band of the 15N16O2 Isotopomer of Nitrogen Dioxide by Fourier Transform Spectroscopy

✍ Scribed by J. Orphal; A. Perrin; J.-M. Flaud; M. Smirnov; S. Himmelmann; S. Voigt; J.P. Burrows

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 189 KB
• Volume: 204
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.2000.8190

✦ Synopsis

New high-resolution Fourier transform absorption spectra of an 15 N 16 O 2 isotopic sample of nitrogen dioxide were recorded at the University of Bremen in the 6.3-m region. Starting from the results of a previous study [Y. Hamada, J. Mol. Struct. 242, 367-377 (1991)], a new and more extended analysis of the 3 band located at 1582.1039 cm Ϫ1 has been performed. The spin-rotation energy levels were satisfactorily reproduced using a theoretical model which takes into account both the Coriolis interactions between the spin-rotation energy levels of the (001) vibrational state with those of the ( 020) and ( 100) states and the spin-rotation resonances within each of the NO 2 vibrational states. Precise vibrational energies and rotational, spinrotation, and coupling constants were obtained in this way for the first triad of 15 N 16 O 2 interacting states {(020), ( 100), (001)}. Finally, a comprehensive list of line positions and line intensities of the { 1 , 2 2 , 3 } interacting bands of 15 N 16 O 2 was generated, using for the line intensities the transition moment operators which were obtained previously for the main isotopic species.