LINE INTENSITIES FOR THE 10 $\mu m$ BANDS OF $SO_{2}$
Loading...
Date
1997
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Using both high resolution $(R = 0.003 cm^{-1})$ and medium resolution $(R = 0.12 cm^{-1})$ Fourier transform spectra recorded at LPMA Orsay and Kitt Peak, and at NIST Gaithersburg respectively, it has been possible to measure a large set of individual line intensities for the $\nu_{2}$ and $\nu_{3}$ bands of $SO_{2}$ in the $950-1350 cm^{-1}$ Spectral region. These intensities were introduced in a least squares fit calculation allowing one to get the expansion of the transition moment operator of the $\nu_{1}$ and $\nu_{3}$ bands of $SO_{2}$. For these intensities calculations, the theoretical model takes into account the vibration-rotation interactions linking the upper levels involved in the $\nu_{1}, 2\nu_{2}$ and $\nu_{3}$ interacting bands of $SO_{2}$. Finally a synthetic spectrum of the 10 $\mu m$ bands of $SO_{2}$ has been generated, using for the line intensities the dipole moment expansion determined in this work and for the lined positions the parameters and the Hamiltonian matrix given in a previous analysis [J.-M. Flaud, A. Perrin, L.M. Salah, W. J. Lafferty and G. Guelachvili, J. Mol. Spectrose. 160, 272-278 (1993).
Description
Author Institution: Analytical Chemistry Division, CSTL, National Institute of Standards and Technology; Optical technology Division, Physics Laboratory, National Institute of Standards and Technology; Laboratoire de photophysique Moleculaire, CNRS, Universite Paris Sub; Laboratoire de Physique Moleculaire et Applications, CNRS, Universite Paris Sub; Laboratoire de Physique Moleculaire et Applications, Jet Propulsions Laboratory