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首页> 外文会议>Symposium on Scientific Basis for Nuclear Waste Management >The Effect of Alpha-Radiolysis on UO2 Dissolution Determined from Batch Experiments with 238Pu-Doped UO2
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The Effect of Alpha-Radiolysis on UO2 Dissolution Determined from Batch Experiments with 238Pu-Doped UO2

机译：α-辐射对UO2溶解对238pu-掺杂UO2的溶解的影响

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Dissolution experiments were performed with 238Pu-doped UO2 containing doping levels of -1-100 Ci/kg UO2, in 0.1M perchlorate with or without 0.1M carbonate, at pH 9.5, to investigate the effects of a dose-rate on UO2 dissolution rates and on Geff, the fraction of radiolytically produced H2O2 supporting dissolution. Dissolution rates increased by only about 10 times for a -100-fold increase in doping level in both solutions, but increased between 10 and 100 limes in 0.1M carbonate, compared to dissolution rates in 0.1M perchlorate. Geff values increased with decreasing doping level, suggesting that the dissolution reaction is limited by the reaction rate between UO2 and H2O2 at high dose rates, but becomes limited by the rate of production of H2O2 at lower dose rates.
机译：用掺杂水平的238pu掺杂的UO 2进行溶解实验，在pH9.5处，在0.1m高氯酸盐中，在0.1M高碳酸盐中，以研究剂量率对UO2溶解率的影响 在磨石上，辐射性产生的H 2 O 2的级分溶解。 溶解率在两种溶液中掺杂水平增加约10倍，但在0.1M碳酸盐中增加了10至100颗粒，与0.1M高氯酸盐中的溶解率相比。 随着掺杂水平的降低，地Geff值增加，表明溶解反应受高剂量率的UO 2和H 2 O 2之间的反应速率的限制，而是通过以较低剂量的速率产生H2O2的产生速率限制。

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