Abstract
We have measured and calculated doubly differential cross sections for ionization of atomic hydrogen using 75-keV proton impact for fixed projectile energy losses as a function of scattering angle. This collision system represents a pure three-body system and thus offers an accurate test of the theoretical description of the few-body dynamics without any complications presented by electron correlation in many-electron targets. Comparison between experiment and several theoretical models reveals that the projectile-target nucleus interaction is best described by the operator of a second-order term of the transition amplitude. Higher-order contributions in the projectile-electron interaction, on the other hand, are more appropriately accounted for in the final-state wave function.
Original language | English |
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Article number | 052705 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 81 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 21 2010 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics