Tables of X-Ray Mass Attenuation Coefficients for 87 Elements at Selected Wavelengths

Abstract

Tables of x-ray mass attenuation cross sections have been prepared for 87 element s with atomic numbers between one and 94 at 99 selected wavelengths of interest to spectroscopists, microprobe users, diffraction workers, etc. The tables were derived from a reeent x-ray cross section compilation covering the energy range 0.1 keV to 1 MeV. A brief description is given of the assumptions and methods us ed in preparing the original compilation to point out the limitations of the derived tables.

Non-Invasive Approaches for the Evaluation of the Functionalization of Melamine Foams with In-Situ Synthesized Silver Nanoparticles

“…For X-rays, the probability of being attenuated correlates strongly with the number of electrons of an element (i.e., the atomic number Z). Therefore, metals, such as silver, induce strong X-ray attenuation, whereas lighter elements, such as hydrogen, attenuate weakly [41].…”

Interpretation of Analytical Data

“…[ 5] ). If we consider the case where there is only one element causing fluorescence the intensity of these X-rays I~ will give rise to an intensity I~L given by the appropriate cross section.…”

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“…Much less is known about the real part of the refractive index. Aluminum has been studied extensively throughout the spectrum, 22 and some data have been obtained on several materials from 7 to 190 A.26 Many of these data, however, have been derived from reflection, rather than transmission, measurements; this may introduce some systematic errors. 27 At shorter wavelengths, and away from absorption edges, the free-electron expression…”