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Line positions and intensities of the [nu][sub 1] + 2[nu][sub 2] + [nu][sub 3] and 2[nu][sub 2] + 2[nu][sub 3] bands of [sup 16]O[sub 3]

Journal Article · · Journal of Molecular Spectroscopy; (United States)
; ; ;  [1]
  1. URA CNRS, Reims (France). Groupe de Spectrometrie Moleculaire et Atmospherique
A study of high-resolution (0.006 cm[sup [minus]1]) Fourier transform absorption spectra of [sup 16]O[sub 3] around 3,450 cm[sup [minus]1] has been performed, leading to the first analysis of the [nu][sub 1] + 2[nu][sub 2] + [nu][sub 3] and 2[nu][sub 2] + 2[nu][sub 3] bands of this molecule. To increase the absorption strength of these very weak bands a White cell with path lengths of up to 36 m and pressures from 40 to 55 Torr was used. The rotational energy levels of the (121) and (022) vibrational states deduced from observed spectra have been satisfactorily reproduced using a Hamiltonian matrix which takes explicitly into account the Coriolis interaction between (121) [leftrightarrow] (022) and (121) [leftrightarrow] (220) and Darling-Dennison interaction between (022) [leftrightarrow] (220). Furthermore about 60 and 20 line intensities, respectively, for the (121) and (022) bands were measured with an accuracy of about 6 and 12%, leading to the determination of the [nu][sub 1] + 2[nu][sub 2] + [nu][sub 3] and 2[nu][sub 2] + 2[nu][sub 3] vibrational transition moments. Finally, a complete list of line positions, intensities, and lower state energies for both bands has been generated.
OSTI ID:
7001343
Journal Information:
Journal of Molecular Spectroscopy; (United States), Journal Name: Journal of Molecular Spectroscopy; (United States) Vol. 166:2; ISSN JMOSA3; ISSN 0022-2852
Country of Publication:
United States
Language:
English