Abstract
Absolute measurements of the anomalous dispersion constants
f
' for zirconium, niobium and molybdenum made with a computer controlled X-ray interferometer have achieved a precision that permits systematic comparison with the available theories. Measurements were made at about 80 wavelengths within ± 3 keV of the elements’ K-absorption edge. After modification, to minimize computational errors, the theory of Cromer and Liberman is in satisfactory agreement with the results obtained so far, but small systematic differences between theory and experiment are apparent. Further work on a wide variety of elements and over a wide wavelength band is in progress.
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49 articles.
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