Nonequilibrium charge states of recoil ions in high resolution elastic recoil detection analysis

被引：9
|
作者：
Dollinger, G [1 ]
Boulouednine, M [1 ]
Bergmaier, A [1 ]
Faestermann, T [1 ]
机构：
[1] Tech Univ Munich, Phys Dept E12, D-85747 Garching, Germany
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1998年 / 136卷
关键词：
D O I：
10.1016/S0168-583X(97)00662-9
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The measured profiles of a high resolution elastic recoil detection (ERD) analysis utilizing electrostatic or magnetic spectrographs may contain artefacts if only one charge state is measured. This effect is demonstrated by the analysis of 31.8 MeV C-12(q+) recoil ions of different charge states q+ scattered from a pure graphite sample using 60 MeV Ni-58(8+) ions at a scattering angle of 15 degrees and by the analysis of a thin BN film. The primary charge state distribution obtained from scattering events very near the surface significantly deviates from the equilibrium one which is measured for carbon ions scattered deeper than 10(17) at/cm(2) below the surface. Charge exchange cross sections between the main charge states are obtained analysing the depth dependent charge state distributions. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：574 / 578
页数：5
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