Theoretical Studies of Collision-Induced Transitions between Molecular Rotational Energy States

Abstract

A method is presented to calculate the rates of collision‐induced transitions on the basis of collision‐broadening theory. The rates are calculated for important collisional transitions responsible for the change in intensity ΔI/I of the signal transition observed in double resonance experiments involving H₂CO, HDCO, H₂CCO, HCN, and DCN. The values of ΔI/I derived from the calculated transition rates agree satisfactorily with the measured ΔI/I.