- 著者
- JUN TAKADA MASAHARU HOSHI SHOZOH SAWADA MASANOBU SAKANOUE
- 出版者
- Journal of Radiation Research 編集委員会
- 雑誌
- Journal of Radiation Research (ISSN:04493060)
- 巻号頁・発行日
- vol.24, no.3, pp.229-236, 1983-09-15 (Released:2006-06-16)
- 参考文献数
- 14
- 被引用文献数
- 9 11 9
Uranium isotopes were studied to clarify the fallout from the Hiroshima atomic bomb. The 234U/238U activity ratios of uranium leached from the soil in the Hiroshima fallout area were significantly higher than those of other areas according to alpha ray spectrometry. The correlation of specific activity of the fission product 137Cs and the 234U/238U activity ratios was studied. Two different correlations were established inside and outside the fallout area. The results of this study suggest that manifestations of fallout from the Hiroshima atomic bomb are still detectable in the “black rain” area.