Advanced alpha spectrum analysis based on the fitting and covariance analysis of dependent variables

被引：26

作者：

Ihantola, S. ^{[1
]}

Pelikan, A. ^{[2
]}

Pollanen, R. ^{[1
]}

Toivonen, H. ^{[1
]}

机构：

[1] STUK Radiat & Nucl Safety Author, FI-00881 Helsinki, Finland

[2] Dienstleitungen Automat Datenverarbeitung & Infor, Innsbruck, Austria

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 656卷 / 01期

关键词：

Alpha spectrometry; Covariance calculus; Multiplet fitting; PARTICLE SPECTRA; SPECTROMETRY; PEAKS;

D O I：

10.1016/j.nima.2011.07.005

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The correct handling of statistical uncertainties is crucial especially when unfolding alpha spectra that contain a low number of counts or overlapping peaks from different nuclides. For this purpose, we have developed a new spectrum analysis software package called ADAM, which performs a full covariance calculus for alpha-particle emitting radionuclides. By analyzing a large number of simulated and measured spectra, the program was proved to give unbiased peak areas and statistically correct uncertainty limits. This applies regardless of the peak areas and the number of unknown parameters during the fitting. In addition, ADAM performs reliable deconvolution for multiplets, which opens the way for the determination of isotope ratios, such as (239)Pu/(240)Pu. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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