Physical Sciences and Mathematics Commons^™

Simultaneous Projectile-Target Ionization: A Novel Approach To (E, 2e) Experiments On Ions, Holger Kollmus, Robert Moshammer, Ronald E. Olson, Siegbert Hagmann, Michael Schulz, Joachim Hermann Ullrich

Physics Faculty Research & Creative Works

A kinematically complete experiment for simultaneous ionization of a projectile and target has been performed for 3.6 MeV/u C²⁺ on He collisions measuring the final vector momenta of the He¹⁺ recoil ion and of two electrons (projectile, target) in coincidence with the emerging C³⁺ projectile. The feasibility of an event-by-event separation of the various reaction channels, among them the ionization of C²⁺ by the interaction with a quasifree target electron, is demonstrated in agreement with six-body classical trajectory Monte Carlo calculations, paving the way to kinematically complete electron-ion scattering experiments.