Single ionization of helium by antiproton impact

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Abstract

We study the ionization of helium (fie) in collision with antiprotons (p) in the energy range from 10 keV to 1000 keV. We adopt a semiclassical single center close coupling approach in which the wave function for the electron is expanded in a B-spline basis centered on the nucleus of the He atom, The calculations are performed using two different models: the independent particle (IP) model and the one-electron (OE) approximation. The interaction between the active electron and the rest of the atom, i.e. passive electron and nucleus, is represented by a model potential. The results obtained are compared with experimental data as well as with existing theoretical calculations. (c) 2005 Published by Elsevier B.V.
Original languageEnglish
Pages (from-to)318-323
Number of pages6
JournalNuclear Instruments & Methods in Physics Research - Section B: Beam Interactions with Materials and Atoms
Volume233
Issue number1-4
Publication statusPublished - May 2005

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

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