Title
Assessing scattering effects in annular radioisotope excited <tex>$XRF^{+}$</tex> Assessing scattering effects in annular radioisotope excited <tex>$XRF^{+}$</tex>
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
London ,
Subject
Chemistry
Source (journal)
X-ray spectrometry. - London
Source (book)
Biennial EDXRS Conference, JUN 16-21, 2002, BERLIN, GERMANY
Volume/pages
33(2004) :1 , p. 74-82
ISSN
0049-8246
ISI
000188743100014
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Rayleigh and Compton scattered radiation is used in various correction procedures for quantitative x-ray fluorescence analysis. However, the information derived from the measured scatter peaks is altered by several phenomena in the case of annular radioisotope excitation, causing the calculated results to deviate, often significantly, from the expected values. In this work, we assessed the main sources of inaccuracy when using measured scatter intensities. Monte Carlo simulation was used to trace the radiation transport in the geometric arrangement source-sample-collimator-detector and to estimate the contribution of different effects to the measured Rayleigh and Compton scatter peaks. The information obtained in this way was used to extend the IAEA-QXAS standardless fundamental parameter approach to the case of annular radioisotope excitation and to formulate a method to correct for spurious fluorescent peaks appearing in blank measurements. Copyright (C) 2004 John Wiley Sons, Ltd.
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https://repository.uantwerpen.be/docman/iruaauth/999c50/21510357.pdf
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