Abstract
The electronic energy transfer in collisions between two diatomic molecules at thermal energy is treated by a distorted-wave type calculation. The predominating role of short-range interactions is assumed. Potential energy curves and coupling terms have been estimated by configuration interaction between locally excited states. The method is applied to the system: N2(A 3Σu+)+CO(X 1Σ+) →N2(X 1Σg+) +CO(a 3Π). The results are compared with the available experimental data. A general study of the dependence of the rate constants and cross sections on the energy gap and temperature is given. Finally a comparison with the golden-rule model and other quantum mechanical approximate calculations is presented.
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