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Article Dans Une Revue Applied Radiation and Isotopes Année : 2018

Mapping 238U decay chain equilibrium state in thin sections of geo-materials by digital autoradiography and microprobe analysis

Résumé

A new approach is proposed in order to spatially localize and determine the equilibrium state of natural decay chains on hand-scale geological samples, thanks to a combination of three techniques: 1) Elementary chemical mapping by microprobe; 2) Alpha autoradiograph by gaseous detectors and 3) bulk alpha particle spectrometry. The quantitative nature of alpha autoradiograph and its comparison with U chemical maps allows to locate radioactive equilibrium state in four samples. This equilibrium state was confirmed by alpha spectrometry analysis.

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hal-01952923 , version 1 (12-12-2018)

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Axel Angileri, Paul Sardini, Jérôme Donnard, Samuel Duval, Hugo Lefeuvre, et al.. Mapping 238U decay chain equilibrium state in thin sections of geo-materials by digital autoradiography and microprobe analysis. Applied Radiation and Isotopes, 2018, 140, pp.228-237. ⟨10.1016/j.apradiso.2018.06.018⟩. ⟨hal-01952923⟩
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