Combined analysis of the S and W parameters obtained from positron annihilation spectra

被引：11

作者：

Fedorov, AV ^{[1
]}

van Veen, A ^{[1
]}

Schut, H ^{[1
]}

机构：

[1] Delft Univ Technol, Interfac Reactor Inst, NL-2629 JB Delft, Netherlands

来源：

POSITRON ANNIHILATION - ICPA-12 | 2001年 / 363-3卷

关键词：

Doppler broadening; positron annihilation; vacancy-type defects;

D O I：

10.4028/www.scientific.net/MSF.363-365.646

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Variable energy Positron Beam Analysis (PBA) has proven to be a very useful and powerful technique for the study of nanosize layer structures and point defects in various materials. Analysis of the positron annihilation spectra is usually performed with the help of the S and TV parameters. By mapping the experimental points in the S-TV plane the cluster points characteristic for the layers or defects can be derived. We have developed the program SWAN (S-W ANalysis) to enable to trace these cluster points and to calculate the fractions of the positrons annihilated at the layers or defects ascribed to the cluster points. In combination with the known computer code VEPFIT, program SWAN was successfully used for analyzing the S and W-curves for a number of samples. As an example, the analysis of SIMOX sample measured by PBA is presented. The program runs on a PC, has a user-friendly interface and is available for distribution.

引用

页码：646 / 648

页数：3