Formation of radioactive cesium microparticles originating from the Fukushima Daiichi Nuclear Power Plant accident: characteristics and perspectives
Formation of radioactive cesium microparticles originating from the Fukushima Daiichi Nuclear Power Plant accident: characteristics and perspectives
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福岛第一核电站事故产生的放射性铯微粒的形成：特征和前景
DOI：
10.1080/00223131.2019.1595767
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发表时间：
2019
影响因子：
1.2
通讯作者：
Utsunomiya Satoshi
中科院分区：
文献类型：
--
作者：
Ohnuki Toshihiko;Satou Yukihiko;Utsunomiya Satoshi
随着在福岛第一核电站(FDNPP)的气溶胶样品中发现放射性Cs微粒(CsMP)，许多关于CsMP的报告已经发表。本文综述了近年来利用先进的分析技术，包括先进的透射电子显微镜和同步辐射X射线分析技术来测量和表征CsMPs的研究进展。这些分析表明，Csmps含有Si、Fe、Zn、Cs和少量的U以及一些裂变产物。Csmps中的铀以铀矿和(U，Zr)O2的形式存在。详细的高级透射电子显微镜分析已经澄清了在这一严重事故中导致核燃料和安全壳材料成分变化的一些过程。此外，一份关于在主安全壳内外收集的燃料碎片的元素组成和结构的详细报告25强调了这样一个事实，即燃料碎片中含有纳米颗粒，铀和锆组分的结构与Csmps相似。这种结构上的相似性促进了对结构和元素组成的进一步研究，特别是对Csmps中U和Zr的研究，并为研究燃料碎片的化学特性开辟了新的途径。
Following identification of radioactive Cs microparticles (CsMPs) in aerosol samples from the Fukushima Daiichi Nuclear Power Plant (FDNPP), numerous reports on CsMPs have been published. This paper reviews recent progress in the measurement and characterization of CsMPs by advanced analytical techniques, including advanced transmission electron microscopy (TEM) and synchrotron X-ray analysis. These analyses revealed that the CsMPs contained Si, Fe, Zn, Cs, and minor quantities of U together with some fission products. Uranium in the CsMPs was identified as being in the form of uraninite and (U,Zr)O2. Detailed advanced TEM analysis has clarified some of the processes resulting in the alteration of constituents of the nuclear fuels and containment vessel materials during this severe accident. In addition, a detailed report on the elemental compositions and structures of the fuel debris fragments collected inside and outside of the primary containment vessel25highlighted the fact that the fuel debris fragments contained nanoparticles with the U and Zr components having similar structures to that of the CsMPs. This similarity in structures has stimulated further research on the structure and elemental constituents, especially for U and Zr in the CsMPs, and has opened up new avenues for studying the chemical characteristics of the fuel debris.
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DOI：
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