Probing hollow atom states formed during impact of highly charged ions on surfaces: N6,7+ and O7+ on Al(110) and Si(100)

J. Limburg*, S. Schippers, I. Hughes, R. Hoekstra, R. Morgenstern, S. Hustedt, N. Hatke, W. Heiland

*Corresponding author for this work

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Abstract

This paper presents spectra obtained from the interaction of slow N7+ and O7+ ions interacting with a Si(100) crystal and from N6+ ions interacting with an Al(110) surface at grazing incidence. The spectra show profound structures which, by means of Hartree-Fock atomic structure calculations, allow us to identify the hollow atom states present at the moment of KLL decay. The velocity dependence of the spectra can be explained by a model in which the projectiles L-shell is filled by direct capture of a single target core electron during consecutive binary collisions between projectile and target atoms. The cross section for this capture process is large and, by its localized nature, yields a velocity dependent L-shell filling rate.

Original languageEnglish
Pages (from-to)436-440
Number of pages5
JournalNuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms
Volume98
Issue number1-4
DOIs
Publication statusPublished - May-1995
Event7th International Conference on the Physics of Highly Charged Ions (HCI-94) - , Austria
Duration: 19-Sep-199423-Sep-1994

Keywords

  • ELECTRON-EMISSION
  • PT(110)
  • TARGET
  • SLOW

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