Modelling surface restructuring by slow highly charged ions

G. Wachter, K. Tokési, G. Betz, C. Lemell, J. Burgdörfer

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We theoretically investigate surface modifications on alkaline earth halides due to highly charged ion impact, focusing on recent experimental evidence for both etch pit and nano-hillock formation on CaF2 (A.S. El-Said et al., Phys. Rev. Lett. 109, (2012) 117602 [1]). We discuss mechanisms for converting the projectile potential and kinetic energies into thermal energy capable of changing the surface structure. A proof-of-principle classical molecular dynamics simulation suggests the existence of two thresholds which we associate with etch pit and nano-hillock formation in qualitative agreement with experiment.

Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume317
Issue numberPART A
DOIs
Publication statusPublished - Mar 21 2013

Keywords

  • Etch pit
  • Molecular dynamics
  • Nano-hillock
  • Surface modification

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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