PRODUCT STATE-RESOLVED STEREODYNAMICS OF THE REACTION H(S-2)-]OH(X(2)PI(3(CO2)2) NU=0, N=5)+CO((1)SIGMA(+))/

The detailed stereodynamics of the H + CO2 system have been studied us ing polarized Doppler resolved laser induced fluorescence to state sel ectively probe the OH product. The lambda-doublet specific differentia l cross-sections and translational energy distributions were measured, along with the scattering angle dependence of the rotational angular momentum polarization. The observed centre-of-mass differential cross- section has significant contributions in both the forward and backward hemispheres, with a small preference for backward scattering, and the measured fraction of available energy released as translational energ y is greater than that predicted by statistical models. The rotational angular mometum vector of the OH product displays a polarized angular distribution, measured with respect to the reagent relative velocity vector k and the kk' scattering plane, with the pi(A '') lambda-double t component being significantly more strongly polarized than the pi(A' ) level. In addition, those products scattered backwards are seen to h ave a different polarization from those scattered forwards. The unprec edented detail of the information obtained is explained in terms of ra ther stringent steric constraints in the entrance channel and the form ation of short-lived collision complexes.