Trails of Kilovolt Ions Created by Subsurface Channeling

Journal Article · Fri Feb 19 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.075501· OSTI ID:21410603

Redinger, Alex; Standop, Sebastian; Michely, Thomas ^[1]; Rosandi, Yudi; Urbassek, Herbert M ^[2]

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1. II. Physikalisches Institut, Universitaet Koeln, Zuelpicherstrasse 77, D-50937 Koeln (Germany)
2. Fachbereich Physik und Forschungszentrum OPTIMAS, Universitaet Kaiserslautern, Erwin-Schroedinger-Strasse, D-67663 Kaiserslautern (Germany)

Using scanning tunneling microscopy, we observe the damage trails produced by keV noble-gas ions incident at glancing angles onto Pt(111). Surface vacancies and adatoms aligned along the ion trajectory constitute the ion trails. Atomistic simulations reveal that these straight trails are produced by nuclear (elastic) collisions with surface layer atoms during subsurface channeling of the projectiles. In a small energy window around 5 keV, Xe{sup +} ions create vacancy grooves that mark the ion trajectory with atomic precision. The asymmetry of the adatom production on the two sides of the projectile path is traced back to the asymmetry of the ion's subsurface channel.

• OSTI ID: 21410603
• Journal Information: Physical Review Letters, Vol. 104, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.104.075501; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACCURACY
ASYMMETRY
ATOMS
CHANNELING
INCIDENCE ANGLE
KEV RANGE
PLATINUM
RARE GASES
SCANNING TUNNELING MICROSCOPY
SURFACES
TRAJECTORIES
VACANCIES
XENON IONS
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
IONS
METALS
MICROSCOPY
NONMETALS
PLATINUM METALS
POINT DEFECTS
TRANSITION ELEMENTS