HIGH RESOLUTION LASER SPECTROSCOPY OF $OH^{+}$
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Date
1988
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Ohio State University
Abstract
The first observation of transitions in the $c^{1}\Pi-b^{1}\Sigma^{+}$ system of the OH+ molecule has been achieved by fast-ion-beam laser photofragment spectroscopy. The spectrum was recorded by monitoring $O^{+}$ photofragment ions which are produced by predissociation of the $c^{1}\Pi$ state by repulsive $^{3}\Sigma^{-}$ and $^{3}\Sigma^{-}$- states. Five vibrational bands have been recorded, with $P_{+} Q$ and R branch structure and molecular parameters have been determined. The rotational constant for the $v=0$ level of the $b^{1}\Sigma^{+}$ state agrees well with that obtained by Merer et. al. [1] from an analysis of perturbations in the $A^{2}\Pi-X^{3} \Sigma^{-}$ emission spectrum. Molecular parameters for the $b^{1}\Sigma^{+}$and $c^{1}\Pi$ states are in good agreement with those obtained from ab-initio calculations of the potential energy curves [2].
Description
$^{1}$ A.J. Merer, D.N. Malm. R.W. Martin, M. Horani and J. Rostas, Can. J. Phys. 53 (1975) 251 $^{2}$ D.M. Hirst and M.F. Guest. Molec. Phys. 49 (1983) 1461
Author Institution: Department of Chemistry, University of Nottingham
Author Institution: Department of Chemistry, University of Nottingham