The semiclassical coupled states method

Abstract

A semiclassical method, in which only the translational degree of freedom is treated classically, is presented. The coupling scheme is reduced by neglecting the intermultiplet transitions. Thus, the method is the semiclassical version of the CS (coupled states) method. Some calculations on the He–H₂ system are carried out. These calculations show that vibration to rotation energy conversion is dominating at low collision energies.