Time resolved studies of collisional transfer and radiative decay of the CS A 1PI state

The lifetimes of the γ' = 0-5 levels originating from the CS A 1PI state have been studied at high spectral resolution using the high frequency deflection technique. In addition to the well-known effects of triplet-singlet perturbations on the lifetimes, a strong sensitivity to large collisional transfers from more distant triplet levels have been revealed. The latter causes long-lived components in the decay curves and large increases of the A-X band intensities when foreign catalyser gases are added. (Auth.)