LINEAR AND NONLINEAR SPECTROSCOPY BY USE OF MICROWAVE MODULATION SIDEBANDS IN THE CO LASER REGION'
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Date
1988
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Ohio State University
Abstract
The analysis of infrared microwave sideband laser spectra of the $v_{2}$ band of $D_{2}CO$ at $1700 cm^{-1}$, for which a preliminary report was given at this meeting last year, has been completed with the determination of improved molecular constants for the $v_{2} - 1$ state. Approximately 150 transitions have been fit to a set of constants that can predict transitions for $J < 30$ and $K < 9$ to an absolute accuracy of approximately 10 MHz. The transitions for $K_{a}{^{a}}- 9-11$ show evidence for a resonance. An infrared radio-frequeney double resonance effect has been observed by pumping an R-bend transition in the $\nu_{2}$ band of $H_{2}CO$ with the Infeared microwave sideband laser system operating at fixed resonant frequency and recording the infrared transmission as a function of radio frequency. Double resonance effects were observed when the RF frequency coincided with the splittings of the connected asymmetry doublets.
Description
This research was supported by the U.S. National Science Foundation.
Author Institution: Department of Chemistry, Michigan State University
Author Institution: Department of Chemistry, Michigan State University