Naslov
New High-Resolution Analysis of the nu_1 + 3nu_3 Band of Nitrogen Dioxide in the Near Infrared Spectral Region

Autori
Miljanić, Snežana ; Perrin, Agnes ; Orphal, Johannes ; Fellows, Carlos E. ; Chélin, Pascale

Izvornik
Journal of Molecular Spectroscopy (0022-2852) 251 (2008), 1-2; 9-15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
^14N^16O_2; Nitrogen dioxide; High-resolution Fourier transform infrared spectrum; Electron spin-rotation resonance; Coriolis resonance; Anharmonic interaction; Line position; Line intensity

Sažetak
The high-resolution Fourier transform absorption spectrum of the ^14N^16O_2 molecule was recorded in the near infrared 5200-6005 cm_-1 spectral range. Starting from the results of a previous study [R.E. Blank, M.D. Olman, C.D. Hause, J. Mol. Spectrosc. 33 (1970) 109-118] a new analysis of the nu_1 + 3nu_3 band located at 5984.705 cm_-1 has been performed. The new assignments involve energy levels of the (103) vibrational state with rotational quantum numbers up to K_a = 8 and N = 47. The spin-rotation energy levels were satisfactorily reproduced within their experimental uncertainty using a theoretical model which takes explicitly into account the Coriolis interactions between the spin rotational levels of the (103) vibrational state and those of (122) and of (080), the anharmonic interactions between the (122) and (080) vibrational states together with the electron spin-rotation resonances within the (103), (122) and (080) vibrational states. As a consequence, precise vibrational energies, rotational, spin-rotational, and coupling constants were achieved for the triad {; ; (122), (080), (103)}; ; of interacting states of ^14N^16O_2. Using these parameters a comprehensive list of line positions and of reliable line intensities was generated for the nu_1 + 3nu_3 band of NO2.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

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