Charge exchange of He+-ions with aluminium surfaces

被引：21

作者：

Rund, S. ^{[1
]}

Primetzhofer, D. ^{[1
]}

Markin, S. N. ^{[1
]}

Goebl, D. ^{[1
]}

Bauer, P. ^{[1
]}

机构：

[1] Johannes Kepler Univ Linz, Inst Expt Phys, Abt Atom & Oberflaechenphys, A-4040 Linz, Austria

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2011年 / 269卷 / 11期

基金：

奥地利科学基金会;

关键词：

Low-energy ion scattering; Single crystal; Neutralization; AI(111); Ion fraction; LEIS;

D O I：

10.1016/j.nimb.2010.11.049

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Charge exchange of He-4(+) and He-3(+) ions with surfaces of polycrystalline aluminium and AI(1 1 1) was investigated in the low-energy ion scattering (LEIS) regime. Ion spectra were recorded for primary energies ranging from 280 to 4000 eV by using an electrostatic analyzer (ESA). A very low threshold energy E-th for collision induced charge exchange (CI) was deduced from the shape of experimental spectra. Ion fractions P+ were evaluated. No systematic difference in P+ was observed for both, the two surfaces investigated and the two different projectiles. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1171 / 1174

页数：4

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