文章基本信息

标题：Study on method to achieve high transmutation of LLFP using fast reactor
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作者：Toshio Wakabayashi ; Yoshiaki Tachi ; Makoto Takahashi 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-14
DOI：10.1038/s41598-019-55489-w
出版社：Springer Nature
摘要：The purpose of this study is to clarify the method to achieve high transmutation rates of four long-lived fission products ( 79 Se, 99 Tc, 107 Pd, and 129 I) using a fast reactor. New LLFP target assemblies were invented in consideration of the suppression of thermal spikes in adjacent fuel assemblies by combining YD 2 and YH 2 moderators or using a thermal neutron filter material. It was clarified that the high transmutation rate of about 8%/year was achieved, if the new LLFP target assemblies of 4 nuclides were loaded in the blanket region of the sodium cooled, MOX fueled fast reactor. The feasibility of the LLFP transmutation target was clarified through experiments on material properties and fabrication of the LLFP target, YH 2 and YD 2 moderators.