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Leaching of Plutonium from “Old” Samples of Single Phase Ceramics Based on Zr0.79Gd0.14Pu0.04O1.93 and La0.9Pu0.1PO4 Doped with238Pu

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Abstract

Samples of 238Pu-doped single-phase ceramics based on cubic zirconia, Zr0.79Gd0.14Pu0.07O1.93, and monazite, La0.9Pu0.1PO4, have been studied by static leach test in distilled water. Before leach test accumulated doses were (in alpha-decays/m3 x 1026): from 1.6 to 1.7 – for cubic zirconia; and 1.0 – for monazite. Despite high radiation damage both phases remained crystalline according to XRD analysis. The results of static leach tests demonstrate the following Pu normalized mass loss (in g/m2, 90°C, 28 days): from 0.3 to 0.7 – for cubic zirconia; and 1.6 – for monazite. These data are discussed in comparison with results of previous leach tests carried out at lower accumulated doses.

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  1. V.G. Khlopin Radium Institute, 28, 2-nd Murinskiy Ave., 194021, St. Petersburg, Russia

    Bella Yu. Zubekhina & Boris E. Burakov

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  1. Bella Yu. Zubekhina
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  2. Boris E. Burakov
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Zubekhina, B.Y., Burakov, B.E. Leaching of Plutonium from “Old” Samples of Single Phase Ceramics Based on Zr0.79Gd0.14Pu0.04O1.93 and La0.9Pu0.1PO4 Doped with238Pu. MRS Advances 1, 4249–4253 (2016). https://doi.org/10.1557/adv.2017.216

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