  The time dependent Schroedinger equation is solved analytically for a
simplified model of moving infinite walls. A new knock-out mode is described
which might occur during heavy ion collisions. The outer shell-nucleons are
ionised due to the increase of level energy when two nuclei are approaching
fast enough. This is analogous to the Mott effect but in contrast occurs only
if the reaction time is short enough that no common ionisation threshold in the
compound system is established. To demonstrate this pure nonequilibrium effect
a simulation of realistic heavy ion collision by a nonlocal Boltzmann equation
is performed.
