BROADENING OF HYDROGEN FLUORIDE LINES BY $H_{2}$, $D_{2}$ AND $N_{2}$
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Date
1974
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Publisher
Ohio State University
Abstract
Foreign gas broadening of the vibration-rotation lines in the first overtone band of hydrogen fluoride have been investigated. Line widths broadened by $N_{2}$, $H_{2}$ and $D_{2}$ have been measured for 15 lines in the band at a resolution of approximately $0.1 cm^{-1}$. Comparison of the measured widths with predictions based on the Anderson theory show good agreement only for $N_{2}$ broadening of the lower J transitions. Theory overpredicts all $H_{2}$ broadened widths and all $D_{2}$ broadened widths except those for the R(0), P(1) and P(2) lines for the Anderson treatment of close collisions. Better agreement is found with $H_{2}$ broadening if the Van-Kranendonk treatment of close collisions is used. The general conclusion reached is that the theory cannot be used reliably to predict vibration-rotation line widths which are dominated by forces of shorter range than dipole-dipole.
Description
Author Institution: Science Applications, Inc.