A CROSSED-BEAM STUDY OF THE STATE-RESOLVED INTEGRAL CROSS-SECTIONS FOR THE INELASTIC-SCATTERING OF OH(CHI-2-PI) WITH CO AND N2

State-resolved cross sections for the inelastic scattering of OH(X2-PI) with CO and N2 have been measured in a crossed molecular beam apparatus over the energy range from 0.5 to 5.5 kcal mol-1. The magnitude and shape of the excitation functions for the same OH final states were virtually independent of the two targets except near threshold. Both spin-orbit conserving and spin-orbit changing transitions have been investigated. Cross sections for spin-orbit changing transitions of large DELTA-N were approximately the same magnitude as those for spin-orbit conserving transitions. For small DELTA-N, however, the spin-orbit conserving transitions became more favorable. The LAMBDA-doublet ratio, PI(A')/PI(A"), in the PI-3/2 (F1) manifold differed from unity only for the N2 target for which the ratio became increasingly larger than unity as N' increased. The observed fine-structure effects were nearly the same as those from the corresponding (reverse) reactive collisions, and a close connection between the inelastic and reactive events has been conjectured.