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Exploring analytical potential of ICP-MS for the determination of radioactive Cs isotopes
https://repo.qst.go.jp/records/54437
https://repo.qst.go.jp/records/54437d72bc8a0-4ca5-463b-b40a-494201709132
Item type | 会議発表論文 / Conference Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2014-01-08 | |||||
タイトル | ||||||
タイトル | Exploring analytical potential of ICP-MS for the determination of radioactive Cs isotopes | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
鄭, 建
× 鄭, 建× 田上, 恵子× 内田, 滋夫× 鄭 建× 田上 恵子× 内田 滋夫 |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Radioactive Cs isotopes are high yield fission products up to 6.535% and 6.236% for 135Cs and 137Cs, respectively, from thermal neutron fission of 235U. They can be released into the environment in nuclear events like the detonation of a nuclear weapon or nuclear reactor accident. In the fission chains for 135Cs and 137Cs, a shielding of 135Cs occurs due to neutron capture of its precursor, 135Xe, to form 136Xe, whereas production of 137Cs is unaffected. This process causes a high degree of variance of 135Cs/137Cs isotope ratio with source. Thus, the ratio of 135Cs/137Cs will be characteristic of the reactor operation and shutdown conditions. In addition, the isotope ratio of 135Cs/137Cs is very important in many aspects in radioecological studies, including source identification of radioactive contamination, dispersion modeling of fission products in the environment after a nuclear accident, long-term estimation of environmental behavior of Cs, and development of accurate sediment geochronology. | |||||
書誌情報 |
Proceedings of the 14th Workshop on Environmental Radiactivity 巻 13, p. 359-364, 発行日 2013-12 |