Simulations of Ripple Formation on Ion-Bombarded Solid Surfaces
- Department of Physics, University of Helsinki, P.O.Box 9, FIN-00014 Helsinki (Finland)
Ripple formation on amorphous carbon surfaces bombarded by 5keV Ar ions is studied by atomistic simulations. Sputtering is treated in detail by simulating the entire collision cascades originated by the bombarding Ar ions. Surface relaxation is described by a Wolf-Villain-type discrete model. Ripples and wavelike patterns are observed to emerge on the surface. The ripples have a well-defined wavelength and the orientation of the wave crests changes from normal to parallel to the beam, when the angle of incidence is increased from 30{degree} to 60{degree}, respectively. The wavelength is found to depend on the magnitude of the diffusion and orientation of the beam as predicted by the continuum theories. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 532628
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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