We investigate the motion of an e-particle in the average time depencent potential V(R,, t) of a fissioning nucleus. The emission process is treated quantum mechanically via a numerical solution of the one-body Schroedinger equation with V(R~, t). This solution yields the distribution of initial conditions for classical trajectories describing the eparticles outside the Coulomb barrier. The time and shape dependence of V(R,, t) is shown to have significant influence on the observable angle and energy distribution of the o-particles emitted during fission.