A REINVESTIGATION OF THE GOODMAN BANDS OF IODINE
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Date
1989
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Ohio State University
Abstract
The Goodman $bands^{1}$ form the strongest evidence for the existence of bound states in the $28000<T_{e}<40000 cm^{-1}$ region of $I_{2}$.We have recorded the Goodman system in fluorescence following one and two-color excitation. Spectra have been obtained for both $127I_{2}$ and $129I_{2}$ using dye laser frequencies covering $16500 - 18500 cm^{-1}$. At high resolution each band is resolved to reveal a cluster of 4-15 rotational lines. Our analysis has shown that the upper state is accessed via a resonance enhanced three-photon absorption process. A vibrational and rotational analysis has positively identified the upper terminus as the $FO{^{+}}_{u}$ state ($T_{e} = 47218 cm^{-1}$), a member of the second tier of ion-pair states.
Description
$^{1}$ K.K. Lehmann, J. Smolarek, and L. Goodman, J. Chem Phys. 69. 1569, 1978.
Author Institution: Department of Chemistry, S.U.N.Y. Binghamton; Department of Chemistry, McMaster University
Author Institution: Department of Chemistry, S.U.N.Y. Binghamton; Department of Chemistry, McMaster University