Dosimetric study of sediments at the beta dose rate scale: Characterization and modelization with the DosiVox software

Abstract : The effects of sediment heterogeneity on beta dose rate have been investigated by simulation with the DosiVox software. Basic sediment cases, as well as a model of a micro-stratified sediment from the Mas d'Azil cave have been modeled at a few centimeters scale. The results of the simulations have highlighted different factors having a significant impact on the beta dose rate dispersion, among which the heterogeneity of the radioactive elements, the distribution of grains in the matrix and their proportion in the sample. These factors contribute to enlarge beta dose distributions and even create complex ones, and inevitably induce errors in the dating process. These effects are discussed, as well as the potential of the simulation to calculate beta dose rates in sediment samples and the necessity of using sampling protocols adapted to sediment complexity.
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Conference papers
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https://hal-univ-tlse2.archives-ouvertes.fr/hal-02017453
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Submitted on : Wednesday, February 13, 2019 - 10:58:12 AM
Last modification on : Tuesday, July 9, 2019 - 10:13:04 AM

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Loïc Martin, Norbert Mercier, Sébastien Incerti, Yannick Lefrais, Christophe Pécheyran, et al.. Dosimetric study of sediments at the beta dose rate scale: Characterization and modelization with the DosiVox software. 14th International Conference on Luminescence and Electron Spin Resonance Dating, Jul 2014, Montréal, Canada. pp.134-141, ⟨10.1016/j.radmeas.2015.02.008⟩. ⟨hal-02017453⟩

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