Abstract
We report fully differential cross section (FDCS) calculationsand absolute measurements for ion-atom impact ionization. Using the COLTRIMS (cold target recoil ion momentumspectroscopy) method, we have obtained absolute FDCS both in the scattering plane as well as out of the scattering plane for100 MeV amu-1 C6+ ionization of helium. FDCS resultsare presented for different projectile scattering angles andejected-electron energies. The measurements are compared with a theoretical calculation employing an asymptotically exactthree-body final-state wavefunction that contains all activetwo-particle subsystem interactions to infinite order inperturbation theory. For the active electron, aHartree-Fock (HF) bound-state wavefunction is used for the initial state andnumerical continuum-state eigenfunctions of a HFpotential for the ion are used for the final state. In thescattering plane, these theoretical results are in very goodagreement with experiment for small and intermediate momentumtransfer. However, some significant discrepancies are found forlarge momentum transfer and outside the scattering plane. Thesediscrepancies disappear upon comparison with successivelyless-differential cross sections.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic, Molecular and Optical Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
