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Indexed by:期刊论文

Date of Publication:2009-09-15

Journal:9th International Conference on Computer Simulation of Radiation Effects in Solids

Included Journals:SCIE、EI、CPCI-S、Scopus

Volume:267

Issue:18

Page Number:3129-3132

ISSN No.:0168-583X

Key Words:2D electron gas; QHD model; Stopping power

Abstract:In this paper, we investigate the electronic excitations induced by a charged particle moving outside a nano-dielectric sphere covered with infinitesimally thin metal film by using the linearized quantum hydrodynamic (QHD) theory. General expressions of the induced potential of the electron and the stopping power of the charged particle are derived in spherical coordinates systems. In our calculations, the spherical distribution of the induced potential for different particle speed is examined. The results indicate that an oscillatory wake effect exists in the electron gas during the interactions. In addition, the dependence of the stopping power on a charged particle position and relative permittivity of a dielectric sphere is analyzed. (C) 2009 Elsevier B.V. All rights reserved.