Seminars Archive

Electron-electron coincidence studies on atomic targets: a \'subjective\' review of (e,2e) and (e,3e) experiments

Abstract
In this review, I will mainly discuss recent experimental results obtained for the (e,3e) double ionisation, with the aim of trying to emphasize where are we, and what are the achievements in this field. To this purpose, I will use as often as possible the comparison with (e,2e) single ionisation results, which are probably more familiar to everyone. Most results discussed here are concerned with the simplest two-electron system, namely helium. However, other rare gases will also be touched upon. For both the (e,2e) and (e,3e) processes, the focus will be put on three different aspects : the relationship with the target structure properties (so-called electron momentum spectroscopy), the behaviour of the cross sections in the so-called \\\'optical limit\\\', and the dynamical aspects of the projectile-target interaction.