SHAPES AND WIDTHS OF AMMONIA LINES COLLISION-BROADENED BY HYDROGEN
Loading...
Date
1972
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Half-widths and shapes of several rotational lines in $\nu_{2}$-bands of ammonia, collision-broadened by hydrogen, have been measured, at room temperature, with a spectral resolution of $0.15m^{-1}$. Line intensities and self-broadened half-widths have also been measured. From the line intensity data, an estimate of $S_{band} = 600 \pm 30$ $cm^{-2}$ $atm^{-1}$ has been derived for the absolute intensity of the pair of bands. Hydrogen-broadened half-widths have been found to be $0.075 \pm 0.004$ $cm^{-1}$ $atm^{-1}$ for all the lines measured. Shapes of the lines in $NH_{3}-H_{2}$ collisions seem to conform to the super-Lorentz line shape proposed by Varanasi et al. for dipole-quadrupole collisions.
Description
This research was supported by NASA under Grant No. NGR 33-015-139
Author Institution: Department of Mechanics, State University of New York
Author Institution: Department of Mechanics, State University of New York