PHOTOIONIZATION ELECTRONIC SPECTROSCOPY OF AIOH

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1993

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Ohio State University

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Two electronic states of AlOH are observed in the uv near 250nm. The species is produced by laser vaporization (308nm) in a seeded supersonic expansion. Vibrational progressions in these states are probed by resonant two-photon ionization spectroscopy. Stretching $(825cm^{-1})$ and bending $(654cm^{-1})$ modes are observed in both states indicating a significant change in these coordinates from the ground state. The data is indicative of a transition from a linear or quasi-linear ground state to a bent excited state. These observations are consistent with the ab initio computations of Schaefer and coworkers.

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$^{1.}$ J.S. Pilgrim, D.L. Robbins, and M.A. Duncan, Chem. Phys. Lett. 202, 203 (1993)
Author Institution: Department of Chemistry, Univ. of Georgia; Department of Chemistry, Univ. of Georgia

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http://hdl.handle.net/1811/18730

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999