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Defining and Deriving Theoretical Influence Coefficients in XHF Spectrometry

Published online by Cambridge University Press:  06 March 2019

Gerald R. Lachance
Gerald R. Lachance*
Affiliation:
Geologioal Survey of Canada, Ottawa, Ontario, Canada
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Abstract

The concepts underlying the definition and calculation of fundamental influence coefficients and their role in the computation of derived coefficients in alpha-type algorithms are examined. The fundamental-parameter method initiated and continues to provide the basis for the steady progress in giving influence coefficients a sound theoretical status. New definitions of fundamental influence coefficients as the prorating of monochromatic coefficients on the basis of the intensities of each elementary contributions as a function of the total fluorescence intensity and of the intensity of the pure analyte are compared to the presently used approach of defining coefficients as a function of total absorption only.

Type
VII. XRF Techniques, Instrumentation and Mathematical Models
Information
Advances in X-Ray Analysis , Volume 31: Thirty-Sixth Annual Conference on Applications of X-ray Analysis, August 3-7, 1987 , 1987 , pp. 471 - 478
Copyright
Copyright © International Centre for Diffraction Data 1987

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