PHOTODISSOCIATION OF OCS AT 222 NM - THE TRIPLET CHANNEL

The dissociation of OCS at 222 nm produces both S(1D) and S(3P). By monitoring the Doppler profile of the minor (S(P2))-P-3 product on the 3D3(0)<--P-3(2) transition it is determined that the branching ratio for this triplet channel is 5% relative to the singlet channel. Detailed analysis of the Doppler profiles provides an anisotropy parameter of beta = 0.3+/-0.2 and a recoil speed distribution whose average energy is 37% of the 19881 cm-1 available energy. The remainder of the energy, 12525 cm-1, is deposited into CO vibration and rotation. The distributions for both the relative translation and the CO internal energy are broad.