Ion-Atom Collisions

  • J. H. Macek
Part of the Physics of Atoms and Molecules book series (PAMO)


Ion-atom collisions have been of interest to the general physics community because of their relevance to the penetration of charged particles in matter. As fast, charged ions pass through matter they ejected electrons from the atomic constituants. These electrons initiate physical and chemical changes known as radiation damage. For this reason the spectra electrons ejected by fast, positively charged ions have been of studied from the early days of the quantum theory. The Born approximation, for example, is well-adapted to analyze the excitation and ionization of atoms and molecules by fast ions. Measurements of excitation and ionization cross sections at high energy are typically understood in terms of concepts, e.g. the generalized oscillator strength, that have their origins in the Born theory(Fano 1963, Inokuti 1971). On average, exciation and ionization by high-energy ions are well understood in terms of the first Born approximation.


Born Approximation Fermi Acceleration Total Ionization Cross Section High Energy Theory Minus Sheet 
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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • J. H. Macek
    • 1
    • 2
    • 3
  1. 1.Department of Physics and AstronomyUniversity of TennesseeKnoxvilleUSA
  2. 2.Oak Ridge National LaboratoryUSA
  3. 3.Oak RidgeUSA

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