Gurzhiy Vladislav V, Burakov Boris E, Zubekhina Bella Yu, Kasatkin Anatoly V
Department of Crystallography, Institute of Earth Sciences, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia.
Ioffe Institute, 26, Politekhnicheskaya, 194021 St. Petersburg, Russia.
Materials (Basel). 2023 Jun 22;16(13):4533. doi: 10.3390/ma16134533.
Two crystalline phases, which are analogues of common secondary uranyl minerals, namely, becquerelite (Ca[(UO)O (OH)]·8HO) and phurcalite (Ca[(UO)O (PO)]·7HO) were identified on the surface of a Chernobyl corium-containing sample affected by hydrothermal alteration in distilled water at 150 °C for one year. Phases were characterized using Single-Crystal X-ray Diffraction Analysis (SCXRD) as well as optical and scanning electron microscopy. Features of the structural architecture of novel phases, which come from the specific chemical composition of the initial fragment of Chernobyl sample, are reported and discussed. Precise identification of these phases is important for modelling of severe nuclear accidents and their long-term consequences, including expected corium-water interaction processes at three damaged Units of the Nuclear Power Plant Fukushima Daiichi.
在一个受切尔诺贝利含熔渣样本表面，发现了两种结晶相，它们类似于常见的次生铀酰矿物，即斜水铀矿（Ca[(UO₂)₂O₂(OH)₂]·8H₂O）和水磷钙铀矿（Ca[(UO₂)₂O₂(PO₄)]·7H₂O），该样本在150℃的蒸馏水中经过一年的水热蚀变。通过单晶X射线衍射分析（SCXRD）以及光学和扫描电子显微镜对这些相进行了表征。报告并讨论了源自切尔诺贝利样本初始碎片特定化学成分的新相结构架构特征。精确识别这些相对于严重核事故及其长期后果的建模非常重要，包括福岛第一核电站三个受损机组预期的熔渣 - 水相互作用过程。
