Abstract
WHEN solids or liquids are irradiated with X-rays the elements in the substance emit secondary fluorescent radiation. The intensity of the fluorescent radiation from an element in a mixture is usually not proportional to the concentration of that element. The reason for this is that the heavy element exhibits an X-ray absorption markedly different from the matrix. Thus a plot of the intensity of the emitted wavelength (L line) against concentration of the heavier element in the mixture gives a curve which, as the concentration of the element increases, becomes parallel to the concentration axis (Fig. 1L).
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References
Addink, N. W. H., Kraay, H., and Witmer, A. W., Ninth Colloq. Spectros. Intern., 3, 368 (1961).
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GROOT, T., BRUIJS, P. & VERBEEK, J. X-ray Fluorescence Analysis of Heavy Elements in a Light Matrix. Nature 211, 1085 (1966). https://doi.org/10.1038/2111085a0
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DOI: https://doi.org/10.1038/2111085a0
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