Geochemical Characteristics of an Ancient Nuclear Reactor ^|^ldquo;Oklo^|^rdquo;

• Hidaka H.

  Department of Earth and Planetary Systems Science, Hiroshima University

書誌事項

タイトル別名

• Geochemical Characteristics of an Ancient Nuclear Reactor “Oklo”

抄録

The Oklo uranium deposit at the Republic of Gabon, central Africa, had partly functioned as natural fission reac-tors. Many elements of the Oklo reactor zones and the related samples show the variations in the isotopic compo-sition caused by a combination of nuclear fission, neutron capture, and radioactive decay. Isotopic studies provide useful information to estimate reactor conditions and to understand behavior of radionuclides in geological media. In my recent work, in-situ REE, Pb, and U isotopic analyses of individual tiny minerals in and around reactor zones have been performed using a Sensitive High Resolution Ion Micro-Probe (SHRIMP). The data suggest the adsorption property of apatite in trapping fissiogenic LREE and Pu migrated from the reactor zone, and distribution of fissiogenic REE under oxidizing atmosphere.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　ａｎｄ　Ｒａｄｉｏｃｈｅｍｉｃａｌ　Ｓｃｉｅｎｃｅｓ

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　ａｎｄ　Ｒａｄｉｏｃｈｅｍｉｃａｌ　Ｓｃｉｅｎｃｅｓ 8 (2), 99-103, 2007

  日本放射化学会

詳細情報

• CRID: 1390282679457477248
• NII論文ID: 10021102008
• NII書誌ID: AA11948402
• DOI: 10.14494/jnrs2000.8.99
• COI: 1:CAS:528:DC%2BD2sXhsVCgtb3L
• ISSN: 18835813
• ISSN: 13454749
• 本文言語コード: en
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