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Three- and Four-Body Dynamics in Fast Heavy Ion-Atom Ionization
Journal of Physics B: Atomic, Molecular and Optical Physics
  • Ronald E. Olson, Missouri University of Science and Technology
  • J. Fiol
Single ionization of helium by impact of 3.6 MeV u−1 Au53+ ions is investigated by means of quantum-mechanical and classical methods. Calculations of fully differential cross sections are compared with recently published data for ionization of low-energy electrons as a function of the momentum transferred by the projectile to the target system. A description of initial and final states of the He atom in terms of a Hartree-Fock potential provides an improvement over previous hydrogen-like models. The present results show that inclusion of the resolution and uncertainties present in the experiment has a major influence on both the shape and magnitude of the cross sections. The effect of four bodies and electron-electron correlation is also investigated. However, after including the experimental conditions into the calculations, the three- and four-body results present similar behaviour.
United States. Department of Energy
Keywords and Phrases
  • Atomic and Molecular Collisions,
  • Atomic and Molicular Physics,
  • Electronic Excitation,
  • Electronic Ionization,
  • Excited States,
  • Few-Body Systems,
  • Many-Body Systems,
  • Self-Consistent-Field Methods
Document Type
Article - Journal
Document Version
File Type
© 2004 Institute of Physics - IOP Publishing, All rights reserved.
Publication Date
Citation Information
Ronald E. Olson and J. Fiol. "Three- and Four-Body Dynamics in Fast Heavy Ion-Atom Ionization" Journal of Physics B: Atomic, Molecular and Optical Physics (2004)
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