Recoil-ion and electron momentum spectroscopy is a rapidly develo** technique that
allows one to measure the vector momenta of several ions and electrons resulting from …

The substantial progress that has occurred during the 1990s in the field of electron-atom-
collision theory is discussed. We show how a solution of a small-model three-body problem …

The past decade has seen extraordinary theoretical progress in the field of fully
kinematically resolved atomic electron-impact ionisation, and its closely related field of …

Over the past two decades impressive progress has been made in the theoretical and the
experimental study of the multiple excitation and of the complete fragmentation of four-body …

Single ionization of helium by 102 eV electron impact has been studied by measuring the
momentum vectors of all final-state particles, ie, two electrons and the He+ ion, with an …

Multiple electron processes occur widely in atoms, molecules, clusters, and condensed
matters when they are interacting with energetic particles or intense laser fields. Direct …

Double ionization of helium by 6 MeV proton impact has been explored in a kinematically
complete experiment using a “reaction microscope.” For the first time, fully differential cross …

We develop a theoretical model to describe simultaneous ionization excitation and double
ionization of a two-electron atomic shell (ie, He 1 s 2) by a fast charged-particle impact. The …

We present experimental and theoretical fully differential cross sections for single ionization
by fast, 1-keV (v= 8.6 au) electron impact. The cross sections were measured using a …

Simultaneous ionization and excitation of helium atoms by 500 eV electron impact is
observed by a triple coincidence of an ionized slow electron, the recoiling He+ ion, and the …