A CLASSICAL PATH THEORY OF COLLISIONAL REDISTRIBUTION IN CAHE SPIN-CHANGING ENERGY-TRANSFER COLLISIONS

We have applied a semiclassical (classical path quantum close-coupling) nonadiabatic theory of collisional redistribution to model Ca-He spin-changing energy transfer collisions. The theory predicts the total far wing absorption and final state resolved action spectra. The semiclassical model predictions are in excellent agreement with full quantum mechanical close-coupling calculations [J. Chem. Phys. 95, 5861 (1991)] and both are in good accord with the experimental observations. © 1994 American Institute of Physics.