LASER-INDUCED FLUORESCENCE FROM HCO AND DCO. NEW RESULTS
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Date
1987
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Ohio State University
Abstract
Laser-induced fluorescence spectra have how been observed of several levels from both HCO and DCO. In addition to the spectrum of the $<0,9,0>^{\prime}$ level reported from HCO last year, we have now observed excitation and emission spectra from the following levels: $<0,11,0>^{\prime}$ and $<1,7,0>^{\prime}$ of HCO and $<0,11,0>^{\prime}, <0,13,0>^{\prime}$, and $<0,15,0>^{\prime}$ of DCO. Emission to overtones of the CH stretch have been observed, revealing this vibration to be substantially anharmonic $(X_{11} = -165 cm^{-1})$. A computer simulation of the $<0,11,0>^{\prime}$ excitation spectrum of HCO has been performed, reliably predicting the rotational line positions. The anomalous intensity distribution is explained in terms of a K-type resonance, in which the linewidth is given by $\Delta \nu = 0.7 + (3 X 10)-5>J^{2} (J + 1)^{z}$. In addition, some evidence exists of intensity borrowing due to Fermi resonance interaction.
Description
B.M.Stone, M.Noble, and E.K.C.Lee, Chem. Phys. Lett., 118, 83 (1985)
Author Institution: Dept. of Chemistry, University of California; Dept. of Chemistry, San Jose State University
Author Institution: Dept. of Chemistry, University of California; Dept. of Chemistry, San Jose State University