Generalization of Grawert parameters -: quantum close-coupling calculations for Ba (6s6p, 3P2→1P1)+Ar inelastic collision

The conventional and coherence cross sections that can be measured in collisional experiments with atomic beams are expressed via quantities dependent on the dynamics only and independent of geometry. The quantities introduced are the generalized Grawert parameters describing the collisional processes that occur in gas cell experiments (average cross sections). The generalization of Grawert parameters allows us to obtain direct relationships between the average cross sections and the conventional and coherence cross sections. The formulae introduced are applied to Ba-Ar inelastic collisions in order to discuss the characteristics of the multistructure cross sections.