We studied mutual ionization in 200-keV H-+He collisions in a kinematically complete experiment by measuring the fully momentum-analyzed recoil ions and both active electrons in coincidence. Comparison of the data to our calculations, based on various theoretical models, show that mutual ionization proceeds predominantly through the interaction between both electrons. The post-collision interaction between the outgoing ejected electrons as well as higher order processes involving the interaction between the core of both collision partners are also important.
T. Ferger et al., "Mutual Ionization in 200-keV H⁻+ He Collisions," Physical Review A, vol. 72, no. 6, pp. 062709-1-062709-8, American Physical Society (APS), Dec 2005.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevA.72.062709
German Research Association
Gesellschaft fur Schwerionenforschung
National Science Foundation (U.S.)
Keywords and Phrases
Electrons; High energy physics; Ionization; Ions; Kinematics; Collision partners; Post-collision interaction; Recoil ions; Helium; Hydrogen ions
International Standard Serial Number (ISSN)
Article - Journal
© 2005 American Physical Society (APS), All rights reserved.