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Enhancement effect as a relative excess absorption
Author(s) -
Kuczumow Andrzej,
Holland J. Grenville
Publication year - 1989
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.1300180104
Subject(s) - absorption (acoustics) , microprobe , electron microprobe , meaning (existential) , excited state , analytical chemistry (journal) , analogy , chemistry , physics , optics , mineralogy , atomic physics , environmental chemistry , psychology , linguistics , philosophy , psychotherapist
A new approach to problems associated with enhancement effects in XRF analysis, and by analogy to analysis by electron microprobe and PIXE, is discussed. The concept of enhancement as ‘relative excess absorption’ is introduced. This concept allows an arrangement of mass balances in which the concentration of any given element may be derived explicitly from a set of relationships equivalent to fundamental expressions, such as the Lachance–Traill and Tertian equations for monochromatically excited XRF and the Claisse–Quintin equations for polychromatic excitation. In this new approach the values of μ k ′(λ i or E i ) may be derived, and carry the meaning of apparent mass absorption coefficients for absorption and enhancement effects characteristic of any given pair of elements. Finally, some obvious convergences between XRF, electron microprobe and PIXE analyses are emphasized.