Energy loss and deflection of fast ions under glancing incidence upon a graphene sheet

Autor:	Frank O. Goodman, Jorge Zuloaga, Zoran L. Mišković
Rok vydání:	2007
Předmět:	Nuclear and High Energy Physics Electron density Chemistry Graphene Jellium Carbon nanotube Ion law.invention Deflection (physics) law Physics::Atomic and Molecular Clusters Graphite Atomic physics Valence electron Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:162-166
ISSN:	0168-583X
Popis:	We investigate the stopping power and the image force on fast ions moving parallel to a graphene sheet caused by the dynamic polarization of carbon valence electrons. We compare the results based on a two-dimensional hydrodynamic model of graphene with those based on a three-dimensional hydrodynamic model which uses in the ground-state the electron density obtained from the Thomas–Fermi class of models for graphene in jellium approximation. It is shown that, at least for high ion speeds, the two-dimensional model underestimates the magnitudes of both the stopping power and the image force. Our results are relevant for consistent modelling of the various interaction forces involved in ion channeling through graphite and through carbon nanotubes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ad046d694d777b5ee0dfae980bea72f https://doi.org/10.1016/j.nimb.2006.11.107 Zobrazit plný text záznamu Full Text from ScienceDirect