High-accuracy experimental determination of photon mass attenuation coefficients of transition metals and lithium fluoride in the ultra-soft energy range - Sorbonne Université Access content directly
Journal Articles Physical Chemistry Chemical Physics Year : 2024

High-accuracy experimental determination of photon mass attenuation coefficients of transition metals and lithium fluoride in the ultra-soft energy range

Abstract

In the field of quantitative X-ray analysis techniques, such as electron probe microanalysis, precise knowledge of fundamental parameters is crucial. Especially, the accurate determination of photon mass attenuation coefficients is essential to perform correct elemental quantification. While the widely used databases offer agreement for the hard X-ray range, significant differences arise for lower photon energies. Furthermore, addressing the uncertainties of the tabulated data, which can be of several hundreds of percent, is of urgent need. Driven by recent advances in analytical techniques in the low energy range including investigation of materials containing lithium, the interest in a reliable set of photon mass attenuation coefficients is steadily increasing. In this study, we experimentally determine photon mass attenuation coefficients for lithium fluoride, aluminium, and different transition metals in the extreme low energy range from 40 eV to a several hundreds of eV. This high-precision experimental determination allows a comparison with the existing data tables. We observe differences that turn out to be significant, especially around the absorption edges.
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Origin : Publication funded by an institution
Licence : CC BY NC - Attribution - NonCommercial

Dates and versions

hal-04540886 , version 1 (10-04-2024)

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Attribution - NonCommercial

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Pia Schweizer, Yves Ménesguen, Marie-Christine Lépy, Emmanuelle Brackx, Maxime Duchateau, et al.. High-accuracy experimental determination of photon mass attenuation coefficients of transition metals and lithium fluoride in the ultra-soft energy range. Physical Chemistry Chemical Physics, 2024, ⟨10.1039/d4cp00500g⟩. ⟨hal-04540886⟩
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