Elastic scattering cross sections for the analysis of helium by 1H backscattering and hydrogen by 4He ERD

被引：17

作者：

Nurmela, A ^{[1
]}

Raisanen, J ^{[1
]}

Rauhala, E ^{[1
]}

机构：

[1] Univ Helsinki, Accelerator Lab, FIN-00014 Helsinki, Finland

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1998年 / 136卷

基金：

芬兰科学院;

关键词：

elastic scattering cross sections; helium; hydrogen; backscattering; elastic recoil detection;

D O I：

10.1016/S0168-583X(97)00674-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Elastic scattering cross sections for the analysis of helium by proton backscattering have been determined in the energy region 1.6-2.7 MeV. The measurements were performed at laboratory angles of 110 degrees-160 degrees. For the analysis of hydrogen by elastic recoil detection (ERD), the scattering cross sections for H-1 recoils by He-4 ion bombardment for energies 6.4-10.8 MeV at recoil angles of 28 degrees-8 degrees have been calculated by kinematically reversing the backscattering process. The helium target was prepared by implanting 60 keV He-4 ions into a thin tantalum foil. The helium concentration in the target was determined by 10 MeV Si-28 ion transmission ERD analysis. The obtained systematic cross section data are compared with the scarce literature values available. (C) 1998 Elsevier Science B.V.

引用

页码：77 / 80

页数：4

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