Energy dependent studies of anisotropic atomic sputtering of Ni(111)

A. Wucher, M. Watgen, C. Mößner, H. Oechsner, B. J. Garrison

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The anisotropic ejection of atoms sputtered from a Ni(111) surface by Ar+ ions of 1.1 keV was investigated by angle- and energy-resolved secondary neutral mass spectrometry (SNMS). The angular distribution of sputtered atoms exhibits three different peaks which correspond to a preferred emission along the close packed [111]-, [110]- and [100]-directions of the crystal, respectively. The intensity as well as the location of the "spots" are shown to depend strongly on the ejection energy E of the sputtered atoms. Also, the energy distributions measured in and outside of the spot directions are found to differ significantly. The results are reproduced at least qualitatively by a molecular dynamics simulation using a many-body embedded atom interaction potential.

Original languageEnglish (US)
Pages (from-to)531-535
Number of pages5
JournalNuclear Inst. and Methods in Physics Research, B
Issue number1-4
StatePublished - Apr 1 1992

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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