The structure of sodium-aluminophosphate glasses containing constituents of high-level wastes (cesium, magnesium, copper, and molybdenum oxides) from uranium-graphite reactors was studied by IR and Raman spectroscopy coupled with x-ray diffraction. The structural network was shown to be composed of short P-O chains with embedded AlO4 tetrahedra. Cross-linking by Mg2+ was possible in the Mg-bearing samples. The effect of the other oxides (Cs2O, MoO3, CuO) on the glass structure was negligible for the occurring amounts. The glasses devitrified partially upon quenching and more strongly upon annealing. This was reflected in splitting of the vibrational bands for bonds in the glass anionic structural motif.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 81, No. 4, pp. 563–568, July–August, 2014.
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Stefanovsky, S.V., Myasoedov, B.F., Remizov, M.B. et al. IR and Raman Spectroscopy of Sodium-Aluminophosphate Glasses for Immobilizing High-Level Wastes from Spent Nuclear Fuel Reprocessing. J Appl Spectrosc 81, 618–623 (2014). https://doi.org/10.1007/s10812-014-9979-5
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DOI: https://doi.org/10.1007/s10812-014-9979-5