Neutralization of He ions scattered from Ca surface

被引：15

作者：

Sasaki, M ^{[1
]}

Scanlon, PJ ^{[1
]}

Ermolov, S ^{[1
]}

Brongersma, HH ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2002年 / 190卷

关键词：

He ion; neutralization; Ca; collision-induced neutralization; Auger neutralization;

D O I：

10.1016/S0168-583X(01)01207-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The neutralization of He ions scattered from a Ca surface, as well as Al and Cu surfaces as references, is discussed on the basis of the incident energy dependence of low energy ion scattering (LEIS) spectra. The neutralization probability obtained for Ca is much higher than that expected on the basis of the Auger mechanism, indicating that the collision-induced (CI) process is dominant for the neutralization. The markedly large background component in the LEIS spectrum for Ca, corresponding to the re-ionization at the surface of He ions scattered and neutralized in the bulk, is consistent with the high probability of a CI process. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：127 / 130

页数：4

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