Role of surfaces and interfaces in ion-beam energy deposition processes in layered and nanolayered materials

The role of surfaces and interfaces in the inelastic energy deposition rate of swift ions traversing a layered material is analyzed in terms of quantum confinement effects on the atomic mean excitation energies for target atoms close to a physical limiting boundary. Noticeable differences in energy...

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Bibliographic Details
Published in:Radiation effects and defects in solids 2012-08, Vol.167 (8), p.621-630
Main Author: Cruz, Salvador A.
Format: Article
Language:English
Subjects:
Boundaries
confinement
Constraining
Deposition
Energy
Ion beams
Ions
Nanocomposites
Nanomaterials
Nanostructure
Nuclear power generation
Quantum confinement
Radiation
stopping
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Summary:The role of surfaces and interfaces in the inelastic energy deposition rate of swift ions traversing a layered material is analyzed in terms of quantum confinement effects on the atomic mean excitation energies for target atoms close to a physical limiting boundary. Noticeable differences in energy deposition rates at surfaces and interfaces relative to the bulk values are predicted depending on the projectile energy. The results of this study suggest that quantum confinement effects on the energy deposition process in nanolayered materials should be properly accounted for in any stopping theory.
ISSN:1042-0150
1029-4953
DOI:10.1080/10420150.2011.642873