Real time, in-situ deuteriding of uranium encapsulated in grout; effects of temperature on the uranium-deuterium reaction
Real time, in-situ deuteriding of uranium encapsulated in grout; effects of temperature on the uranium-deuterium reaction
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DOI：
10.1016/j.corsci.2017.08.016
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发表时间：
2017-08
影响因子：
8.3
通讯作者：
C. Stitt;C. Paraskevoulakos;N. Harker;A. Banos;K. Hallam;Christopher P. Jones;T. Scott
中科院分区：
文献类型：
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作者：
C. Stitt;C. Paraskevoulakos;N. Harker;A. Banos;K. Hallam;Christopher P. Jones;T. Scott
为了准确预测核废料容器中可能存在的氢化铀的起始和演化，需要进行模拟条件的研究。在这里，第一次，在现场，在真实的时间，而灌浆介质中的铀氘反应进行了检查。氘气控制装置和不锈钢-石英玻璃反应池配置在同步加速器光束线上，以收集X射线衍射和X射线断层扫描数据。有人发现，氘化物的形成是有限的铀和灌浆的热导率和氘化物的启动仅开始高于阈值温度。还观察到氧化铀和灌浆之间的强粘附。
To accurately predict the initiation and evolution of uranium hydride potentially present in nuclear waste containers, studies of simulated conditions are required. Here, for the first time, the uranium-deuterium reaction was examined in-situ, in real time, whilst within grouted media. A deuterium gas control rig and stainless steel-quartz glass reaction cell were configured on a synchrotron beam line to collect X-ray diffraction and X-ray tomography data. It was found that deuteride formation was limited by the uranium and grout thermal conductivities and deuteride initiation only commenced above a threshold temperature. Strong adherence between uranium oxide and grout was also observed.