Neutralization of low energy He+ ions by Cu in the Auger regime

被引：5
|
作者：
Markin, S. N.
Primetzhofer, D.
Valdes, J. E.
Taglauer, E.
Bauer, P.
机构：
[1] Johannes Kepler Univ Linz, Inst Expt Phys, A-4040 Linz, Austria
[2] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[3] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 258卷 / 01期
关键词：
neutralisation; low energy ion scattering; single crystal; copper; helium;
D O I：
10.1016/j.nimb.2006.12.081
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Neutralization of light He-4(+) ions in backscattering geometry is studied on a single crystalline Cu(100) and on a poly crystalline Cu-poly surfaces by means of direct comparison of the ion yields. Below 2 keV neutralization is only restricted to the Auger transition involving two electrons. Measurements in this regime revealed a similar to 35% higher ion fraction for the single crystal Cu(100) with respect to the Cu-poly. The observed difference in the neutralization probability is ascribed to a different extension of the electron jellium edge, resulting from different atomic arrangement. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：18 / 20
页数：3
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