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Titolo:
New high-resolution analysis of the 3 nu(3) and 2 nu(1)+nu(3) bands of nitrogen dioxide (NO2) by Fourier transform spectroscopy
Autore:
Stephen, TM; Goldman, A; Perrin, A; Flaud, JM; Keller, F; Rinsland, CP;
Indirizzi:
Univ Denver, Dept Phys, Denver, CO 80208 USA Univ Denver Denver CO USA 80208 v Denver, Dept Phys, Denver, CO 80208 USA Univ Paris 11, CNRS, Photophys Mol Lab, F-91405 Orsay, France Univ Paris 11 Orsay France F-91405 tophys Mol Lab, F-91405 Orsay, France NASA, Langley Res Ctr, Div Atmospher Sci, Hampton, VA 23682 USA NASA Hampton VA USA 23682 s Ctr, Div Atmospher Sci, Hampton, VA 23682 USA
Titolo Testata:
JOURNAL OF MOLECULAR SPECTROSCOPY
fascicolo: 1, volume: 201, anno: 2000,
pagine: 134 - 142
SICI:
0022-2852(200005)201:1<134:NHAOT3>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONLOCAL THERMODYNAMIC-EQUILIBRIUM; ELECTRON-SPIN ROTATION; LINE POSITIONS; CONTACT RESONANCES; NITROGEN-DIOXIDE; (NO2)-N-14-O-16; BANDS; INTENSITIES; NO2; PARAMETERS;
Keywords:
IR spectroscopy; NO2; nonlocal thermodynamic equilibrium; NLTE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Stephen, TM Univ Denver, Dept Phys, Denver, CO 80208 USA Univ Denver Denver CO USA 80208 pt Phys, Denver, CO 80208 USA
Citazione:
T.M. Stephen et al., "New high-resolution analysis of the 3 nu(3) and 2 nu(1)+nu(3) bands of nitrogen dioxide (NO2) by Fourier transform spectroscopy", J MOL SPECT, 201(1), 2000, pp. 134-142

Abstract

Using new high-resolution Fourier transform spectra recorded at the University of Denver in the 2-mu m region, a new and more extended analysis of the 2v(1), + v(3), and 3v(3), bands of nitrogen dioxide, located at 4179.9374and 4754.2039 cm(-1) respectively, has been performed. The spin-rotation energy levels were satisfactorily reproduced using a theoretical model that takes into account both the Coriolis interactions between the spin-rotationenergy levels of the (201) vibrational "bright" state with those of the (220) "dark" state. The interactions between the (003) bright state with the (022) dark stare were similarly treated. The spin-rotation resonances within each of the NO, vibrational states were also taken into account. The precise vibrational energies and the rotational, spin-rotational, and coupling constants were obtained for the two dyads [(220), (201)] and ((022), (003))of the (NO2)-N-14-O-16 interacting states. From the experimental line intensities of the 2v(1) + v(3) and 3v(3) bands, a determination of their vibrational transition moment constants was performed. A comprehensive list of line positions and line intensities of the (2v(1) + 2v(2), 2v(1) + v(3)) andthe (2v(2) + 2v(3), 3v(3)) interacting bands of (NO2)-N-14-O-16 was generated. In addition, assuming the harmonic approximation and using the Hamiltonian constants derived in this work and in previous studies (A. Perrin, J.-M. Flaud, A. Goldman, C, Camy-Peyret, W. J. Lafferty, Ph. Areas, and C. P. Rinsland, J, Quant. Spectrosc. Radiat. Transfer 60, 839- 850 (1998)), we have generated synthetic spectra for the ((022), (003))-((040), (021), (002))hot bands at 6.3 mu m and for the ((220), (201))-((100), (020), (001)) hotbands at 3.5 mu m, which are in good agreement with the observed spectra. (C) 2000 Academic Press.

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Documento generato il 22/09/20 alle ore 23:40:55