10min:

P. CROZET, F. MARTIN, A. J. ROSS, Laboratoire de Spectrométrie Ionique et Moléculaire (UMR 5579 CNRS), Bâtiment A. Kastler, Université Lyon I, Domaine Scientifique de la Doua, 69622 Villeurbanne Cedex, France; A. G. ADAM AND M. DICK, Department of Chemistry, University of New Brunswick, Fredericton, NB, Canada E3B 6E2 .

Laser excitation spectra of the A ~²E X ²A₁ system of calcium methoxide were recorded at the University of New Brunswick. CaOCH₃ radicals were produced in a laser ablation source, using a 1.2 % mixture of methanol in He as a precursor. High resolution spectra were recorded in the range 15870-15985 cm^-1 (F.W.H.M. 250 MHz) using a tunable, single-mode cw dye laser (CR 699 + autoscan), operating with DCM dye.

The spectra exhibit bands assigned to the two spin-orbit components of the origin band A ~²E_3/2 X ~²A₁ and A ~²E_1/2 X ~²A₁ . Resolved J and K structures are observed, and tentatively assigned by comparison with synthetic spectra generated from a Hamiltonian given in the literature and spectroscopic data available for the electronic ground state.