The nu[sub 2] and 2[nu][sub 2] [minus] [nu][sub 2] bands of [sup 14]N [sup 16]O[sub 2]: Electron spin-rotation and hyperfine contact resonances in the (010) vibrational state

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Journal of Molecular Spectroscopy; (United States)

DOI:https://doi.org/10.1006/jmsp.1993.1192· OSTI ID:6250853

Perrin, A; Flaud, J M; Camy-Peyret, C ^[1]; Goldman, A; Murcray, F J; Blatherwick, R D ^[2]; Rinsland, C P ^[3]

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1. Univ. P. et Marie Curie, Paris (France). Lab. de Physique Moleculaire et Applications
2. Univ. of Denver, CO (United States). Dept. of Physics
3. NASA Langley Research Center, Hampton, VA (United States). Atmospheric Sciences Division

High-resolution Fourier transform spectra covering the 720-920 cm[sup [minus]1] spectral region have been used to perform a reanalysis of the [nu][sub 2] band ((010)-(000) vibrational transition) together with the first analysis of the 2[nu][sub 2] [minus] [nu][sub 2] hot band of nitrogen dioxided ((020)-(010) vibrational transition). The high-quality spectra show that, for numerous [nu][sub 2] lines, the hyperfine structure is easily observable in the case of resonances due to the hyperfine Fermi-type operator. By performing a full treatment of the spin-rotation and of the hyperfine operators, a new line list of the [nu][sub 2] band (positions and intensities) has been generated, and it is in excellent agreement with the experimental spectrum. Also, a thorough analysis of the 2[nu][sub 2] [minus] [nu][sub 2] hot band has been performed leading to an extended set of new (020) spin-rotation levels. These levels, together with the [(100), (020), (001)] spin-rotation levels deduced previously from the analysis of the [nu][sub 1], 2[nu][sub 2], and [nu][sub 3] cold bands performed in the 6.3- to 7.5-[mu]m spectral range were least-squares fitted, allowing one to derive a new set of vibrational band centers and rotational, spin-rotation, and interaction constants for the [(100)(020)(001)] interacting states of [sup 14]N[sup 16]O[sub 2].

• OSTI ID: 6250853
• Journal Information: Journal of Molecular Spectroscopy; (United States), Journal Name: Journal of Molecular Spectroscopy; (United States) Vol. 160:2; ISSN JMOSA3; ISSN 0022-2852
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
BASIC INTERACTIONS
CHALCOGENIDES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FERMI INTERACTIONS
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTRA
INTERACTIONS
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
MEASURING INSTRUMENTS
MOLECULAR STRUCTURE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NUMERICAL SOLUTION
OXIDES
OXYGEN COMPOUNDS
ROTATIONAL STATES
SPECTRA
SPECTROMETERS
VIBRATIONAL STATES
WEAK INTERACTIONS