Three- and Four-Body Dynamics in Fast Heavy Ion-Atom IonizationJournal of Physics B: Atomic, Molecular and Optical Physics
AbstractSingle 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.
Sponsor(s)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 TypeArticle - Journal
Rights© 2004 Institute of Physics - IOP Publishing, All rights reserved.
Citation InformationRonald 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)
Available at: http://works.bepress.com/ronald-olson/34/