Abstract
We present a systematic study of atomic four-body fragmentation dynamics. To this end we have measured a variety of multiple differential double ionization cross sections for 6 MeV p+He collisions. The data are compared to a first-order calculation with correlated electrons and to a simulation representing a second-order process, with some experimental results seemingly in favor of the first, others in agreement with the second approach. This apparent conflict can be resolved by accounting for elastic scattering between the projectile and one electron already promoted to the continuum through electron-electron correlation in the first-order process.
Recommended Citation
M. Schulz et al., "Role of Elastic Projectile-Electron Scattering in Double Ionization of Helium by Fast Proton Impact," Physical Review A, vol. 79, no. 4, pp. 042708-1 - 042708-7, American Physical Society (APS), Apr 2009.
The definitive version is available at https://doi.org/10.1103/PhysRevA.79.042708
Department(s)
Physics
Sponsor(s)
German Research Association
Helmholtz Alliance
National Science Foundation (U.S.)
Keywords and Phrases
Electron Correlations; Electron Impact Ionisation; Helium Neutral Atoms; Electron-atom collisions
International Standard Serial Number (ISSN)
1050-2947
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2009 American Physical Society (APS), All rights reserved.
Publication Date
01 Apr 2009
