Chemical sputtering of Be due to D bombardment
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In this paper, the erosion of Be when subject to D bombardment was measured at the PISCES-B facility and modelled with molecular dynamics simulations, and a chemical effect was observed, since a fraction of the eroded Be was in the form of BeD molecules.Abstract:
While covalently bonded materials such as carbon are well known to be eroded by chemical sputtering when exposed to plasmas or low-energy ion irradiation, pure metals have been believed to sputter only physically. The erosion of Be when subject to D bombardment was in this work measured at the PISCES-B facility and modelled with molecular dynamics simulations. During the experiments, a chemical effect was observed, since a fraction of the eroded Be was in the form of BeD molecules. This fraction decreased with increasing ion energy. The same trend was seen in the simulations and was explained by the swift chemical sputtering mechanism, showing that pure metals can, indeed, be sputtered chemically. D ions of only 7eV can erode Be through this mechanism.read more
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References
More filters
Journal ArticleDOI
Molecular dynamics with coupling to an external bath.
TL;DR: In this paper, a method is described to realize coupling to an external bath with constant temperature or pressure with adjustable time constants for the coupling, which can be easily extendable to other variables and to gradients, and can be applied also to polyatomic molecules involving internal constraints.
Journal ArticleDOI
Empirical potential for hydrocarbons for use in simulating the chemical vapor deposition of diamond films
TL;DR: An empirical many-body potential-energy expression is developed for hydrocarbons that can model intramolecular chemical bonding in a variety of small hydrocarbon molecules as well as graphite and diamond lattices based on Tersoff's covalent-bonding formalism with additional terms that correct for an inherent overbinding of radicals.
Book
The Stopping and Ranges of Ions in Matter
James F. Ziegler,J.P. Biersack +1 more
TL;DR: In this article, the authors reviewed the calculation of the stopping and the final range distribution of ions in matter, and showed the development of ion penetration theory by tracing how, as the theory developed through the years, various parts have been incorporated into tables and increased their accuracy.
Journal ArticleDOI
New empirical approach for the structure and energy of covalent systems
TL;DR: A new potential for silicon is presented, along with results of extensive tests which suggest that this potential provides a rather realistic description of silicon.
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