THE MILLIMETER SPECTRUM AND MOLECULAR PARAMETERS OF ClO IN THE v = 0 AND v = 1 VIBRATIONAL STATES
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Date
1977
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Ohio State University
Abstract
The $J = 9/2 \leftarrow 7/2, ^{2}\pi_{3/2}$ and $^{2}\pi_{1/2}$, ground vibrational state transitions of $^{35}ClO $ and $^{37}ClO$ and the $^{2}\pi_{3/2}$, excited vibrational state transitions of $^{35}ClO$ have been observed in the 164-167 GHz region. Additional measurements have also been made on the $J = 3/2 \leftarrow 1/2$ and $J = 5/2\leftarrow 3/2$ transitions of both the ground and excited vibrational states. All measurements were made using millimeter oscillators which were phase locked to harmonics of the X-band source of a Hewlett-Packard microwave spectrometer. Splittings of several of the $^{2}\pi_{3/2}$ transitions were resolved at low pressure with the local magnetic field carefully nulled. Using the off diagonal matrix elements tabulated by $Meerts,^{1}$ it was possible to obtain an excellent fit to all of our observed transitions. The most significant change from previously determined $parameters^{2}$ is in the centrifugal distortion constant which now is in excellent agreement with the vibrational frequency measured by $Menzies,^{3}$ et al. The revised parameters for the $v = 0$ state will be presented and compared with those determined for $v = 1$.
Description
$^{1}$W. Meerts, Chem. Phys. 14, 421 (1976). $^{2}$T. Amano, S. Saito, E. Hirota, Y. Morino, D. R. Johnston, and F. X. Powell, J. Mol. Spectrosc. 30, 275 (1969). $^{3}$R. Menzies, J. S. Margolis, E. R. Hinkley, and R. A. Toth, Appl. Opt. 16, 523 (1977). This paper presents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under Contract No. NAS7-100, sponsored by the National Aeronautics and Space Administration.
Author Institution: Jet Propulsion Laboratory
Author Institution: Jet Propulsion Laboratory