PREDISSOCIATION LINE WIDTHS OF THE SCHUMANN-RUNGE BANDS OF $O_{2}$
Loading...
Date
1989
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
A non-linear least squares method of retrieving predissociation line widths from experimental absorption cross $sections^{1}$ has been applied to the (0,0) to (12,0) Schumann-Runge bands of oxygen. Predissociation line widths deduced, for the upper state of the Schumann-Runge bands, are larger than theoretical predictions and the latest measurements of Lewis $et al.^{2}$. Systematic variation of predissociation line widths with respect to rotation was not confirmed except in $v=6, 9, 11$ and 12. These larger line widths will have an impact on calculations of solar flux penetration into the earth's atmosphere and of the photodissociation rates of trace species in the upper atmosphere. This work is supported by NASA grant NAG 5-484 to Smithsonian Astrophysical Observatory.
Description
$^{1}$ K. Yoshino, D. E. Freeman, J. R. Esmond and W. H. Parkinson, Planet, Space Sci. 31, 339-353, (1983). $^{2}$ H. R. Lewis, L. Berzins, J. H. Carver and S. T. Gibson, J. Quant, Spectrosc, Radiat, Transfer 36, 187-207, (1986).
Author Institution: Chemistry Department, University of Hong Kong
Author Institution: Chemistry Department, University of Hong Kong