The predissociation of the C2Δ state of Bar deduced from the laser excitation and fluorescence depletion experiments in the accompanying paper [X. Yang and P. J. Dagdigian, J. Chem. Phys. 106, 6596 (1997)] is considered theoretically. Rates for the spin–orbit-induced predissociation of Bar(C2Δ, ν) levels by the repulsive 1 4Π state are reported, based on ab initio electronic structure data. The predissociation rates reflect the heavy atom effect on the spin–orbit coupling. The rates for the higher vibrational levels are quite sensitive to the position of the “wall” of the 1 4Π state.

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