Oxidation state variation under beta-irradiation in an iron-bearing soda lime glass system

Abstract : The effect of ionizing radiation on glasses in the system SiO2-CaO-Na2O-Fe2O3 is investigated as a function of iron concentration or / and irradiation dose by a pre-edge analysis at the iron K-edge. While reduction phenomenon is clearly observed for large irradiation doses (5 C), the effect of irradiation for intermediate doses is more challenging to interpret. Comparison between X-ray absorption measurements, colorimetry results and Electron Paramagnetic Resonance measurements suggest that iron environment may be modified without the ions being reduced.
Keywords : XAFS Iron Glass Irradiation
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Stéphanie Rossano, Liliane Jean-Soro, Bruno Boizot, Francois Farges, Eric D. van Hullebusch, et al.. Oxidation state variation under beta-irradiation in an iron-bearing soda lime glass system. 14th International Conference on X-Ray Absorption Fine Structure (XAFS14), Jul 2009, Camerino, Italy. pp.012194, ⟨10.1088/1742-6596/190/1/012194⟩. ⟨hal-00512619⟩

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