Distribution of studtite and metastudtite generated on the surface of U3O8: application of Raman imaging technique to uranium compound

Ryoji Kusaka, Yuta Kumagai, Takumi Yomogida, Masahide Takano, Masayuki Watanabe, Takayuki Sasaki, Daisuke Akiyama, Nobuaki Sato, Akira Kirishima

研究成果: Article査読

抄録

Studtite and metastudtite are uranyl peroxides formed on nuclear fuel in water through the reaction with H2O2 produced by the radiolysis of water. However, it is unclear how the two types of uranyl peroxides are generated and distributed on the surface of nuclear fuel. Here, we used Raman imaging technique to exemplify distribution data of the two uranyl peroxides formed on the surface of a U3O8 pellet through immersion in a H2O2 aqueous solution. As a result, we observed that studtite and metastudtite are heterogeneously distributed on the U3O8 surface. No clear correlation between the distributions of studtite and metastudtite was observed, suggesting that the two uranyl peroxides are independently generated on the surface of U3O8. We anticipate that this Raman imaging technique could reveal how these uranyl peroxides are generated and distributed on the surface of the nuclear fuel debris in the Fukushima-Daiichi nuclear power plants.

本文言語English
ページ(範囲)629-634
ページ数6
ジャーナルjournal of nuclear science and technology
58
6
DOI
出版ステータスPublished - 2021

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学

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「Distribution of studtite and metastudtite generated on the surface of U<sub>3</sub>O<sub>8</sub>: application of Raman imaging technique to uranium compound」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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