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Titolo:
SIMULATIONS OF RIPPLE FORMATION ON ION-BOMBARDED SOLID-SURFACES
Autore:
KOPONEN I; HAUTALA M; SIEVANEN OP;
Indirizzi:
UNIV HELSINKI,DEPT PHYS,POB 9 FIN-00014 HELSINKI FINLAND
Titolo Testata:
Physical review letters
fascicolo: 13, volume: 78, anno: 1997,
pagine: 2612 - 2615
SICI:
0031-9007(1997)78:13<2612:SORFOI>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
KURAMOTO-SIVASHINSKY EQUATION; ROUGHENING INSTABILITY; GROWTH; MODEL; EVOLUTION; EROSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
I. Koponen et al., "SIMULATIONS OF RIPPLE FORMATION ON ION-BOMBARDED SOLID-SURFACES", Physical review letters, 78(13), 1997, pp. 2612-2615

Abstract

Ripple formation on amorphous carbon surfaces bombarded by 5 keV 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 degrees to 60 degrees, respectively. The wavelength is found to depend on the magnitude of the diffusion and orientation of the beam as predicted by the continuum theories.

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Documento generato il 03/12/20 alle ore 12:50:16