North-Holland Reaction dynamics of vibrationally excited H2

The q&num state resolved product s ate distribution of the reactions 0(‘D)+H2(u=0, l)+OH(Q v, J, Q, A)+H and C(“D)i-H*(u=O, l)-t~(Zn,u,J,qn)+awmanalysedbylaser-induc+dfl~~. For studying the irhence of vibra-tional excitation on the reaction dynamics, Hz was excited to its fort v&rational state via stimulated Raman pumpink For both reactions H2 (o = 1) increases the reaction rate, but diminishes the A selectivity. Insertkm of the atomic collision psrtner into the H2 bond is the major reaction mechanism, but the probability for an &traction pmcees seean to increase when Hz is vibrationally excited. The ~IIGWUCC of translational energy on the reaction dynamics is observed for &uct states near the energetical Ii&t. InthecaseofO(‘D)+H~asignificants,~~nenergyig tran&hd into OH rot&on, while the reaction ofC(‘D)+H1 transfers translational energy into vibrationally excited CH products. 1. Ilttrddon Compared to the reaction dynamics of species in their vibrational ground state our knowledge of the behaviour of vibrationally excited molecules is very limited up to now. Little is known about the influ-ence of the center-of-mass kinetic energy of the reac-tants on the energy partitioning and fine-structur