Slice imaging of the quantum state-to-state cross section for photodissociation of state-selected rovibrational bending states of OCS (v2=0,1,2|JlM)+hν→CO(J)+S(1D2).

Using hexapole quantum state-selection of OCS (v2=0,1,2|JlM) and high-resolution slice imaging of quantum state-selected CO(J), the state-to-state cross section OCS (v2=0,1,2|JlM)+hν→CO(J)+S(1D2) was measured for bending states up to v2=2. The population density of the state-selected OCS (v2=0,1,2|JlM) in the molecular beam was obtained by resonantly enhanced multiphoton ionization of OCS and comparison with room temperature bulk gas. A strong increase of the cross section with increasing bending state is observed for CO(J) in the high J region, J=60–67. Integrating over all J states the authors find σ(v2=0):σ(v2=1):σ(v2=2)=1.0:7.0:15.0. A quantitative comparison is made with the dependence of the transition dipole moment function on the bending angle. [ABSTRACT FROM AUTHOR]