RESONANT TWO PHOTON MPI SPECTROSCOPY OF $Ca_{2}CI_{3}$

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2000

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Ohio State University

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The electronic spectra of $Ca_{2}Cl_{3}$ and its isotopomers formed by laser ablation were observed by R2MPI at 650nm. This salt cluster can have several possible structures, including a $CaCl\cdot CaCl_{2}$ adduct and a degenerate $D_{3h}$ structure exhibiting both Jahn-Teller and pseudo-Jahn-Teller distortions. Irregularities in the spectra suggest the presence of extensive nonadiabatic vibronic coupling. Results will be compared to predictions based on ab initio and pseudo-potential calculations.

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Author Institution: Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology

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