並列タイトル等Construction of dose estimationmodel for low radiation exposure for residents living around the Semipalatinsk Test Site
タイトル（掲載誌）平成24(2012)年度 科学研究費補助金 基盤研究(B) 研究成果報告書 = 2012 Fiscal Year Final Research Report
一般注記1994以来、旧ソ連セミパラチンスク核実験場周辺住民の放射線被曝線量を評価する目的で,数多くの地点を調査し,最大の汚染があるドロン村でのCs-137汚染分布、蓄積量をベースにして線量評価を行ってきた.今回この手法を、ドロン集落以外の集落,南方に位置するサルジャール,カラウル,カイナル集落に適合して,サルジャール,カラウル集落住民の外部被曝を評価した。カイナル集落については、幅広い地域でCs-137汚染の分布、蓄積量を評価し、これらのデータをベースにして,被曝線量評価モデルの構築と線量評価を進めている。
Since 1994, we have concentrated our energies on assessing the radiation dose for human effect and environmental contamination by the nuclear testings at the Semipalatinsk (SNTS) in Kazakhstan. For this purpose, residual long-lived radionuclides such as 137Cs and Pu isotopes have been measured for environmental samples from various areas. At first, works were focused on Dolon village contaminated heavily and external radiation dose for resident was already estimated by detailed soil samplings where were carried out along a line perpendicular to the supposed center of plume of the first atomic bomb (Aug. 1949). In this works, such works were directed to Sarzhal, Karaul and Kainar villages located in the southern direction from the SNTS. Although the obtained data in Sarzhal and Karaul varied largely, overall, peak-like distributions similar to Gaussian function were observed for both 137Cs and 239,240Pu even after about 60 years from atomic bomb. Within the Sarzhal village, being about 5 km away from the center-axis, upper range is 5000-7000 Bq/m^2. Pu is around 2000 Bq/m^2. By using these data, external radiation doses in both villages were successfully estimated. On the other hand, in Kainar, Gaussian-likedistribution was not observed,137Cs inventory was not so high, now its inventory was around 4000 Bq/m^2. The levels are nearly same as Karaul, but somewhat higher sites like hot-spot were in places existing. Now, further works in Kainar are continuing.
研究課題/領域番号:22404004, 研究期間(年度):2010-2012
出典：研究課題「セミパラチンスク核実験場周辺住民の低線量率外部・内部被曝の線量評価モデル構築」課題番号22404004（KAKEN：科学研究費助成事業データベース（国立情報学研究所）） （https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-22404004/22404004seika/）を加工して作成
関連情報https://kaken.nii.ac.jp/search/?qm=10121295
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22404004/
https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-22404004/22404004seika/
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）