ABSOLUTE INTENSITIES OF THE $OH(X^{2}\Pi)$ MEINEL BANDS.
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Date
1973
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The $^{2}\Pi$ ground state of OH exhibits intense $ \Delta v{>} 1$ vibrational transitions. Using a theoretical dipole moment, M(R), calculated by Stevens, Wahl, Krauss and Neumann, we have calculated the absolute intensities of the vibration-rotation transitions utilizing numerically determined vibrational wavefunctions.
Description
We find that the overtone intensities are generally more intense than the fundamentals and the vibration-rotation interaction can modify the intensities by an order of magnitude. This is due to the flatness of M(R) in the region of $R_{e}$. The agreement with the limited available experimental data is very good, particularly for $\Delta v = 1, 2$, and 3. The results are very sensitive to small variations in M(R) but the MCSCF calculations are of sufficient accuracy, e.g M$ _{theor}.(R_{e}) = M_{exp}.(R_{e})$ to 1\%, that the results for $\Delta v = 1,2$, and 3 should be quite valid.
Author Institution: National Bureau of Standards; Chemistry Division, Argonne National Laboraatory
Author Institution: National Bureau of Standards; Chemistry Division, Argonne National Laboraatory