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Scattering Contributions to the Intensities of the Characteristic Klines of the Lanthanides

Published online by Cambridge University Press:  06 March 2019

V. I. Smolniakov
V. I. Smolniakov*
Affiliation:
Neutron Research Department, Petersburg Nuclear Physics Institute (PNPI), Russian Academy of Sciences Gatchina, Leningrad region, St.Petersburg, 188350, Russia
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Abstract

On the basis of experimental data and theoretical calculations, the contributions of scattering to the intensities of the K-lines of the lanthanides are considered.

This effect studied for the “one-element plus buffer” targets of medium thickness when these targets were excited by gam ma-radiation with energy 59.54 keV of radioisotope 241Am or 88.009 keV of radioisotope 109Cd.

The experimental dependencies were improved by theoretical corrections calculated by the formula for a medium thickness target. This formula takes into account the contributions to the measured intensities which arc caused by the subexcitation of fluorescent atoms by primary radiation scattered in the sample. Good approximation of the experimental data by the theoretical calculations was obtained.

It was found that contributions to the measured intensities of a lanthanide's atom fluorescence, which can be as much as a few percents, can lead to the subexcitation by scattering radiation of the targets with low concentrations of the fluorescent elements.

Type
IX. XRS Mathematical Methods, Trace Analysis and Other Applications
Information
Advances in X-Ray Analysis , Volume 38: Forty-third Annual Conference on Applications of X-ray Analysis , 1994 , pp. 665 - 671
Copyright
Copyright © International Centre for Diffraction Data 1994

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