RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
64 巻 , 9 号
選択された号の論文の6件中1~6を表示しています
原著
  • Ying WANG, Noriaki KATAOKA, Naoyuki KANDA, Ryuta YAMADA, Minami WATANA ...
    2015 年 64 巻 9 号 p. 553-561
    発行日: 2015/09/15
    公開日: 2015/09/29
    ジャーナル オープンアクセス
    Hydrogen explosion occurred at Fukushima Dai-ichi nuclear power plants in Japan on 12―15th March, 2011. At the same time, lots of radioactive materials have been released including tritium(T), and caused serious environmental impacts. In order to investigate the effect of the accident of Fukushima Dai-ichi nuclear power plant on environment, we collected the short precipitation(hourly collected precipitation) and spring water for several years after the accident. As to the precipitation collected, T and radiocaesium were measured by using liquid scintillation counter and high-purity germanium detector, respectively. Furthermore, we also measured the concentration of ions(Na, Cl, Ca2+, and SO42-) in spring water. From the above-mentioned matters, the following points have been obtained:(1)The variation of T concentration in recent three years(2012, 2013 and 2014) can be clarified. (2)The effect of the accident on spring water in mountains around the Fukushima prefecture is so small. (3)As to the short precipitation on 15th March, 2011, the activity of radiocaesium was not detected, but the activity of T was detected significantly.
資料
連載講座
ミュオン科学
中性子散乱による原子・分子のダイナミクスの観測
福島周辺における空間線量率の測定と評価
ミニレビュー
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