SCATTERING OF REACTIVE AND INERT ION-BEAMS FROM SURFACES - ENERGY-LOSS, STRAGGLING AND SKIPPING

Autor(en): MIX, W
RECHTIEN, JH
DANAILOV, D
SNOWDON, KJ
Stichwörter: Instruments & Instrumentation; METAL-SURFACES; MOTION; Nuclear Science & Technology; Physics; Physics, Atomic, Molecular & Chemical; Physics, Nuclear
Erscheinungsdatum: 1991
Herausgeber: ELSEVIER SCIENCE BV
Journal: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volumen: 58
Ausgabe: 3-4
Startseite: 365
Seitenende: 371
Zusammenfassung: 
We compare and contrast the scattering behaviour of beams of the `chemically active' species H+ and N+ with that of the `chemically inert' species He+ and Ar+. The 3-3.5 keV beams were incident at from 1-8-degrees to a Cu(111) surface. The scattered neutral particle energy distributions were recorded at scattering angles in the range 1-9-degrees with a 0.2-degrees angular resolution using a time-of-flight (TOF) technique. We analyse the mean energy loss and straggling as a function of incidence, scattering and azimuthal angles, and beam species. Both quantities behave in a complex manner as a function of these variables. No universal behaviour was found. We report regularly spaced peaks in the scattered Ar atom energy distributions and evidence for such structures in the scattered N atom distributions. We tentatively associate the fine structure in at least the Ar distributions with transient adsorption or skipping motion of a portion of the beam on the surface.
Beschreibung: 
8TH INTERNATIONAL WORKSHOP ON INELASTIC ION-SURFACE COLLISIONS, WIENER NEUSTADT, AUSTRIA, SEP 17-21, 1990
ISSN: 0168583X
DOI: 10.1016/0168-583X(91)95870-J

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