STRIPPED ION-HELIUM ATOM COLLISION DYNAMICS WITHIN A TIME-DEPENDENT QUANTUM FLUID DENSITY-FUNCTIONAL THEORY

A nonperturbative, time-dependent (TD) quantum mechanical approach is described for studying the collision dynamics between the He atom and a fully stripped ion. The method combines quantum fluid dynamics and d ensity functional theory to solve two coupled equations: one for the t rajectory of the projectile nucleus and the other for the electronic c harge distribution of the target atom. The computed TD and frequency-d ependent properties provide detailed features of the collision process . Inelastic and ionization cross sections are also reported. (C) 1998 John Wiley & Sons, Inc.