Residual Radioactivity in Neutron-Exposed Objects and Residual Alpha Radioactivity in Black Rain Areas : I. DOSIMETRY
スポンサーリンク
概要
- 論文の詳細を見る
The residual Eu-142 radioactivity due to the atomic bomb explosion in 1945 was first found in 1976 by in-situ high resolution gamma-ray spectrometry at Hiroshima. Since then, various studies on this nuclide have continued not only in Hiroshima but also in Nagasaki and they have contributed to the reevaluation of the neutron dose due to the A-bombing. By radiochemical separation methods and alpha-ray spectrometry, rather high levels of plutonium were found in the surface soil and in the bottom sediment of water reservoir which were collected at "Black rain area" in Nagasaki. The U-234/U-238 activity ratios for the uranium leached with 0.1 HNO_3 from the surface of soil samples were found to be relatively higher for the samples which were collected at "Black rain area" in Hiroshima.
- 日本放射線影響学会の論文
著者
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Komura K
Low Level Radioactivity Laboratory Kanazawa University
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Komura Kazuhisa
Low Level Radioactivity Laboratory Kanazawa University
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Komura Kazuhisa
Low Level Radioactivity Lab. Kanazawa Univ.
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SAKANOUB MASANOBU
Professor Emeritus, Kanazawa University
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TAN KOKURYON
Low Level Radioactivity Laboratory, Kanazawa University
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Sakanoue M
Professor Emeritus Kanazawa University
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Tan Kokuryon
Low Level Radioactivity Laboratory Kanazawa University
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Sakanoub Masanobu
Professor Emeritus Kanazawa University
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