ANALYSIS OF POSITRON LIFETIME SPECTRA USING QUANTIFIED MAXIMUM-ENTROPY AND A GENERAL LINEAR FILTER

被引：309

作者：

SHUKLA, A

PETER, M

HOFFMANN, L

机构：

[1] Département de Physique de la Matière Condensée, Université de Genève, CH-1211 Genève 4

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1993年 / 335卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(93)90286-Q

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Two new approaches are used to analyze positron annihilation lifetime spectra. A general linear filter is designed to filter the noise from lifetime data. The quantified maximum entropy method is used to solve the inverse problem of finding the lifetimes and intensities present in data. We determine optimal values of parameters needed for fitting using Bayesian methods. Estimates of errors are provided. We present results on simulated and experimental data with extensive tests to show the utility of this method and compare it with other existing methods.

引用

页码：310 / 317

页数：8

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