Single and double ionization of helium in heavy-ion impact

Imre Ferenc Barna, Károly Tokési, Joachim Burgdörfer

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We present single- and double-ionization total cross sections for collisions of helium atoms with multiple charged ions. In our study we apply two different approaches, namely the ab initio coupled channel and the classical trajectory Monte Carlo (CTMC) method. We consider bare projectiles with charge states between two and eight with energies between 0.19 and 2.31 MeV/amu. We find that our coupled-channel calculations are very close to the experimental data even for the case when the Coulomb fields are strong. At the same time CTMC models, using different independent-particle approximations, show somewhat larger discrepancies compared to the experimental cross sections. We also present cross sections for 1.44 MeV/amu Oq+(q = 4-7) projectiles.

Original languageEnglish
Pages (from-to)1001-1013
Number of pages13
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume38
Issue number7
DOIs
Publication statusPublished - Apr 14 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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