MECHANISM OF NEUTRALIZATION IN LOW-ENERGY HE-SCATTERING FROM CARBIDICAND GRAPHITIC CARBON SPECIES ON RHENIUM( ION)

Authors
VANDENOETELAAR LCA MIKHAILOV SN BRONGERSMA HH
Citation
Lca. Vandenoetelaar et al., MECHANISM OF NEUTRALIZATION IN LOW-ENERGY HE-SCATTERING FROM CARBIDICAND GRAPHITIC CARBON SPECIES ON RHENIUM( ION), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 85(1-4), 1994, pp. 420-423
Citations number
25
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
85
Issue
1-4
Year of publication
1994
Pages
420 - 423
Database
ISI
SICI code
0168-583X(1994)85:1-4<420:MONILH>2.0.ZU;2-4
Abstract
In general, the absence of matrix effects in low-energy ion scattering makes quantification possible. Ion fractions, important in quantifica tion, are obtained by measuring scattered ion yields as a function of primary energy. Differences in ion fraction and final energy (strong m atrix effect) are observed in 1-3.5 keV He+ scattering from graphitic and carbidic carbon on a polycrystalline rhenium ribbon. These results are explained by a special quasi-resonance neutralization for graphit e because of the large width of the sp band of graphite, extending tow ards the He 1s energy level.