Single Ionization of Helium by 102 eV Electron Impact: Three-Dimensional Images for Electron Emission
Abstract
Single ionization of helium by 102 eV electron impact has been studied by measuring the momentum vectors of all final-state particles, i.e., two electrons and the He+ ion, with an advanced reaction microscope. Fully differential cross sections for asymmetric scattering geometry, which have been normalized to an absolute scale, have been obtained covering a large range of emission angles for the emitted low-energy (E ⩽ 15 eV) electron and different scattering angles for the fast electron. Strong electron emission out of the projectile scattering plane is confirmed for electron impact, as was observed before for heavy-ion impact ionization. The data are compared with theoretical predictions from a three-Coulomb wavefunction model, first-order and second-order distorted-wave approaches, as well as a convergent close-coupling calculation.
Recommended Citation
M. Dürr and C. Dimopoulou and A. Dorn and B. Najjari and I. Bray and D. V. Fursa and Z. Chen and D. H. Madison and K. Bartschat and J. Ullrich, "Single Ionization of Helium by 102 eV Electron Impact: Three-Dimensional Images for Electron Emission," Journal of Physics B: Atomic, Molecular and Optical Physics, Institute of Physics - IOP Publishing, Oct 2006.
The definitive version is available at https://doi.org/10.1088/0953-4075/39/20/008
Department(s)
Physics
Sponsor(s)
Australian Research Council
Australian Research Council
European Union
National Science Foundation (U.S.)
Keywords and Phrases
Atomic Excitation; Atomic Ionization; Atomic Physics; Molecular Physics
International Standard Serial Number (ISSN)
0953-4075
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2006 Institute of Physics - IOP Publishing, All rights reserved.
Publication Date
01 Oct 2006
