The photodissociation of OCS at 157 nm has been investigated by using tunable vacuum ultraviolet radiation to probe the CO and S photoproducts. Sulfur is produced almost entirely in the1S state, while CO is produced in its ground electronic state and in vibrational levels fromv=0ndash;3 in the approximate ratio (v=0):(v=1):(v=2):(v=3)=(1.0):(1.0):(0.5) :(0.3). The rotational distribution for each vibrational level is found to be near Boltzmann, with temperatures that decrease from 1350 K forv=0 to 780 K forv=3. Measurements of the CO Doppler profiles demonstrate that the dissociation takes place from a transition of predominantly parallel character (bgr;=1.8plusmn;0.2) and that the CO velocity and angular momentum vectors are perpendicular to one another.
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