Abstract

Stimulated-emission pumping is successfully applied to the study of unimolecular dissociation dynamics of HFCO → HF + CO in a pulsed jet. Dissociative levels of the ground electronic state are prepared by stimulated-emission pumping, and the CO fragments formed from these levels are probed by vacuum-ultraviolet laser-induced fluorescence spectroscopy. The rotational energy distribution of the CO fragments indicates modest differences between the dissociation dynamics of HFCO and those of H₂CO. However, the Doppler width of CO fragments from HFCO indicates that the total kinetic energy of the fragments from HFCO is ~65% of total available energy, the same fraction as in the dissociation of H₂CO. The linewidths of the dissociative levels are also measured with high-resolution fluorescence-dip-detected stimulated-emission pumping spectroscopy.

© 1990 Optical Society of America

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