Theoretical-studies of collision-induced energy-transfer in electronically excited states

Some recent theoretical studies of collision-induced energy transfer in electronically excited states are reviewed. Using accurate ab initio electronic wavefunctions potential energy surfaces have been computed for OH(X2-PI, A2-SIGMA+) + He and Ar, Li2 (A1-SIGMA-u+) + Ne, N2+ (X2-SIGMA-g+, A2-PI-u) + He, and CN (X2-SIGMA+, A2-PI) + He and used in quantum scattering calculations of cross sections and rate coefficients for rotational, vibrational, and electronic energy transfer processes. In cases where comparison with accurate experimental data is possible, the theoretical and experimental data agree within 20-30 percent.