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The influence of the fluorescence volume on the observed yield in energy dispersive XRF analysis
Author(s) -
Weber Anders
Publication year - 1983
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300120105
Subject(s) - yield (engineering) , fluorescence , volume (thermodynamics) , simple (philosophy) , energy (signal processing) , materials science , computational physics , analytical chemistry (journal) , optics , statistical physics , atomic physics , chemistry , physics , statistics , thermodynamics , mathematics , chromatography , philosophy , epistemology
Abstract It is shown that when a narrow x‐ray beam is used in energy dispersive fluorescence analysis of thick, low‐Z samples large deviations from the predictions of the commonly used fundamental parameter model occur. A simple method by which the effects can be studied empirically is described. An approximate model allowing a direct calculation of the effécts is introduced. The validity of the model has been confirmed experimentally.