Dynamical stabilization of classical multi-electron targets against autoionization

Abstract

We demonstrate that a recently published quasiclassical M\\oller type approach\n[Geyer and Rost 2002, J. Phys. B 35 1479] can be used to overcome the problem\nof autoionization, which arises in classical trajectory calculations for many\nelectron targets. In this method the target is stabilized dynamically by a\nbackward--forward propagation scheme. We illustrate this refocusing and present\ntotal cross sections for single and double ionization of helium by electron\nimpact.\n