HIGH RESOLUTION SPECTROSCOPY OF THE $\tilde{B}^{2}$A$_{1}$ - $\tilde{X}^{2}$A$_{1}$ TRANSITION OF CaCH$_{3}$ and SrCH$_{3}$

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The $\tilde{B}^{2}$A$_{1}$ - $\tilde{X}^{2}$A$_{1}$ $(0_{0}^{0})$ bands of CaCH$_{3}$ and SrCH$_{3}$ have been observed at high resolution using laser excitation spectroscopy. The molecules were synthesized in a laser ablation/supersonic expansion spectrometer by the reaction of the ablated metal atoms with a 1${\%}$ mixture of $(CH_{3})_{4}Sn$ seeded in argon. The spectra for each molecule exhibit a symmetric top structure, with low J lines of multiple K components present. A rotational analysis is currently in progress, and a comparison of the spectroscopic and structural parameters for both molecules will be presented.

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Author Institution: Department of Chemistry, University of Waterloo, 200 University Ave. West,; Waterloo, ON, N2L 3G1 Canada; Department of Physics, University of Waterloo, 200 University Ave. West,; Waterloo, ON, N2L 3G1 Canada; Department of Chemistry, University of Waterloo, 200 University Ave. West,; Waterloo, ON, N2L 3G1 Canada

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