@inproceedings{oai:repo.qst.go.jp:00054749,
 author = {吉原, 利一（電力中央研究所） and 小湊, あかり（東京理科大学） and 長尾, 悠人 and 河地, 有木 and 橋田, 慎之介（電力中央研究所） and 鈴井, 伸郎 and 尹, 永根 and 藤巻, 秀 and 長尾 悠人 and 河地 有木 and 鈴井 伸郎 and 尹 永根 and 藤巻 秀},
 book = {Proceedings of the International Conference on Environmental Radioactivity ENVIRA 2015},
 month = {Jul},
 note = {We proposed and tested a simple method for on-site monitoring of accumulated radiocesium in young fruit trees (peach, Prunus persica 'Akatsuki'; apple, Malus pumila 'Fuji'; and persimmon, Diospyros kaki 'Hachiya'). We measured cumulative gamma radiation doses using a recently commercialized personal dosimeter (D-shuttle). The results are shown as changes in daily cumulative dose rate (uSv/d), which was calculated from the difference between the tree-emitted dose and the environmental dose. The D-shuttle measurements significantly detected the targeted tree dose and reflected specific changes in the dose rates induced by fertilization, seasonal effects, or both. Even though further improvement and investigation (e.g., the shield set-up manner and an approximation of specific shielding effects of trees) is required to establish the specific correlation between the cumulative dose and radioactivity concentration, the D-shuttle could be a useful tool for monitoring long-term changes in radionuclide distributions in the natural environment.},
 pages = {134--137},
 publisher = {Aristotle University},
 title = {Measurement of environmental radioactivity using a cumulative gamma radiation dosimeter: Fertilization-induced changes in young fruit trees},
 year = {2016}
}