Theoretical and Experimental Linewidth Parameters in the Rotational Spectrum of Nitrogen Dioxide

Contributions to the second order collision efficiency function S ⁽²⁾ (b), used in semiclassical perturbation approaches to pressure broadening of microwave and infrared spectra, due to several leading terms, dipole and quadrupole components, in the expansion of the intermolecular interaction energy...

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Bibliographic Details
Main Author: Moazzen-Ahmadi, Mohamad Nasser
Other Authors: Roberts, James Andrew
Format: Others
Language:English
Published: North Texas State University 1982
Subjects:
Online Access:https://digital.library.unt.edu/ark:/67531/metadc330754/
Description
Summary:Contributions to the second order collision efficiency function S ⁽²⁾ (b), used in semiclassical perturbation approaches to pressure broadening of microwave and infrared spectra, due to several leading terms, dipole and quadrupole components, in the expansion of the intermolecular interaction energy are derived by method of irreducible spherical tensor operators for molecules of arbitrary symmetry. Results are given explicitly in terms of dipole and quadrupole line strengths. General expressions for dipole moment line strength in the asymmetric rotor basis as well as quadrupole moment line strength for the special case of molecules with two independent quadrupole moment components are derived. Computer programs for calculating linewidth parameters in the rotational spectrum of ¹⁴NO₂ based on Anderson and Murphy and Boggs theories are presented.