Wachter, G., Tökési, K., Betz, G., Lemell, C., & Burgdörfer, J. (2013). Modelling surface restructuring by slow highly charged ions. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 317, 149–153. https://doi.org/10.1016/j.nimb.2013.01.046
E134-01 - Forschungsbereich Applied and Computational Physics E136 - Institut für Theoretische Physik
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Journal:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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ISSN:
0168-583X
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Date (published):
9-Feb-2013
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Number of Pages:
5
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Publisher:
ELSEVIER
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Peer reviewed:
Yes
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Keywords:
Instrumentation; Nuclear and High Energy Physics
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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.
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Research Areas:
Computational Materials Science: 30% Modelling and Simulation: 40% Surfaces and Interfaces: 30%
