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

页码：18 / 20

页数：3

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