Inelastic Scattering of Atoms. I. Intermultiplet Transitions

摘要: Electronic‐translational energy transfer processes have minute cross sections for atoms with thermally attainable kinetic energies, unless the amount of converted from electronic to translational form (or vice versa if threshold permits) is rather less than 1 ev. The interest chemical kinetics, therefore, involve highly restricted sets levels. Two situations are commonly encountered: (1) ``two‐state'' case, in which two levels diatomic system or approach closely energy, so that a respectable probability resonance achieved; cases this type almost always most excitation one atom other. (2) Transitions among multiplet given Russell‐Saunders term an atom, induced by collision ``inert'' atom. Spin‐orbit coupling interaction splitting present work concerned latter case. ``high‐energy approximation,'' necessary modification Born approximation, and various ``modified adiabatic approximations,'' take account details angular momentum during collision, described, practical methods calculation considered.