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Title:
Influence of the first-order polarization on the stopping power for bare charges in the jellium model
Authors:
Mathar, Richard J.
Affiliation:
Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Rossendorf e.V., Postfach 510119, 01314 Dresden, Germany
Publication:
Physical Review A (Atomic, Molecular, and Optical Physics), Volume 53, Issue 4, April 1996, pp.2873-2876 (PhRvA Homepage)
Publication Date:
04/1996
Origin:
AIP, APS
PACS Keywords:
Channeling phenomena, Energy loss and stopping power, Exchange, correlation, dielectric and magnetic response functions, plasmons
Abstract Copyright:
(c) 1996: The American Physical Society.
DOI:
10.1103/PhysRevA.53.2873
Bibliographic Code:
1996PhRvA..53.2873M

Abstract

Adding the contribution of the next higher order of the density parameter to the random-phase approximation (the zeroth-order, noninteracting approximation to the susceptibility) improves the calculation of the linear dielectric function of the jellium model. In this paper, the corresponding results by Holas, Aravind, and Singwi [Phys. Rev. B 20, 4912 (1979)] are picked up to extend the Lindhard-Winther theory of the electronic energy loss in a straightforward manner. As known from static approximations to the local-field correction, the electronic stopping at low ion velocities is enhanced. Above the stopping-power maximum, the first-order dynamic dielectric function delivers a correction of the opposite sign.
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Physics
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