Observation of skipping motion in small-angle ion-surface Scattering
Autor(en): | Snowdon, K.J. O'Connor, D.J. MacDonald, R.J. |
Erscheinungsdatum: | 1988 | Journal: | Physical Review Letters | Volumen: | 61 | Ausgabe: | 15 | Startseite: | 1760 | Seitenende: | 1763 | Zusammenfassung: | We report the observation of skipping motion of 200-2000-eV Si+ beams on a smooth Cu(111) surface under grazing (1°-14°) angles of incidence. The kinetic-energy distributions of specularly scatered Si+ and Si- ions exhibit discrete energy-loss features corresponding to an integral number of reflections. Energy losses up to 20% of the incident beam energy, associated with five reflections in a binding potential, are identified. Classical trajectory calculations imply that the beam is trapped following an energy loss, by substrate electron-hole pair or collective excitation, which exceeds the incident-beam-energy component normal to the surface. © 1988 The American Physical Society. |
ISSN: | 00319007 | DOI: | 10.1103/PhysRevLett.61.1760 | Externe URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-3643075246&doi=10.1103%2fPhysRevLett.61.1760&partnerID=40&md5=43ef83f1435125b3175e2a464cf5b7b6 |
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