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Kokubu, Yoko; Fujita, Natsuko; Watanabe, Takahiro; Matsubara, Akihiro; Ishizaka, Chika; Miyake, Masayasu*; Nishio, Tomohiro*; Kato, Motohisa*; Ogawa, Yumi*; Ishii, Masahiro*; et al.
Nuclear Instruments and Methods in Physics Research B, 539, p.68 - 72, 2023/06
Times Cited Count：1 Percentile：32.32(Instruments & Instrumentation)The JAEA-AMS-TONO facility at the Tono Geoscience Center, JAEA has an accelerator mass spectrometer (JAEA-AMS-TONO-5MV). The spectrometer enabled us to use a multi-nuclide AMS of carbon-14 (
C), beryllium-10, aluminium-26 and iodine-129, and we have recently been proceeding test measurement of chlorine-36. In response to an increase of samples, we installed a state-of-the-art multi-nuclide AMS with a 300 kV Tandetron accelerator in 2020. Recently, we are driving the development of techniques of isobar separation in AMS and of sample preparation. Ion channeling is applied to remove isobaric interference and we are building a prototype AMS based on this technique for downsizing of AMS. The small sample graphitization for C has been attempted using an automated graphitization equipment equipped with an elemental analyzer.
I released from the Fukushima Daiichi Nuclear Power Plant in the Kuroshio and Oyashio current areasSuzuki, Takashi; Otosaka, Shigeyoshi; Kuwabara, Jun; Kawamura, Hideyuki; Kobayashi, Takuya
Marine Chemistry, 204, p.163 - 171, 2018/08
Times Cited Count：3 Percentile：14.18(Chemistry, Multidisciplinary)To investigate the penetration of radionuclides released from Fukushima Daiichi Nuclear Power Plant (FDNPP), depth profiles were revealed at Kuroshio current, transition, and Oyashio current areas. The FDNPP-derived I was found in surface layer at Oyashio current and transition areas and in sub-surface layer at Kuroshio current area. Moreover, it was found that the FDNPP-derived I/
Cs ratios in the Oyashio current and transition areas were higher than that in the FDNPP reactor. The higher FDNPP-derived I/Cs ratios suggest three potential mechanisms for the migration of radionuclides in the environment: (1) radioiodine was released more easily than radiocesium by the FDNPP accident, (2) I was supplied from the atmosphere by re-emitted I from contaminated areas around Fukushima, (3) leaked water that removed radiocesium reached the sampling stations. The FDNPP-derived I in sub-surface layer would be transported by the meander of the Kuroshio Extension current.
I in environmental samples by AMS and NAA using an anion exchange resin diskSuzuki, Takashi; Bamba, Shigeru*; Kitamura, Toshikatsu; Kabuto, Shoji*; Isogai, Keisuke*; Amano, Hikaru
Nuclear Instruments and Methods in Physics Research B, 259(1), p.370 - 373, 2007/06
Times Cited Count：14 Percentile：67.43(Instruments & Instrumentation)no abstracts in English
I by Accelerator Mass Spectrometry (AMS) and its application on earth and environmental sciencesSuzuki, Takashi; Muramatsu, Yasuyuki*
Radioisotopes, 54, p.51 - 53, 2005/00
no abstracts in English
I by accelerator mass spectormetrySuzuki, Takashi; Kitamura, Toshikatsu; Kabuto, Shoji*; Togawa, Orihiko; Amano, Hikaru
Dai-46-Kai Kankyo Hoshano Chosa Kenkyu Seika Rombun Shorokushu (Heisei-15-Nendo), p.109 - 110, 2004/12
no abstracts in English
I and its application as an oceanographic tracerSuzuki, Takashi; Kitamura, Toshikatsu; Kabuto, Shoji*; Togawa, Orihiko; Amano, Hikaru
IAEA-CN-118/84P, p.529 - 530, 2004/10
no abstracts in English
Kitamura, Toshikatsu; Kabuto, Shoji*; Suzuki, Takashi; Togawa, Orihiko; Kitada, Yoshinobu*; Watanabe, Yukiya*
Dai-16-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.27 - 31, 2004/02
no abstracts in English
I and 
NdNakagawa, Tsuneo; Hasegawa, Akira
JAERI-Research 2003-020, 46 Pages, 2003/09
JAERI-Research-2003-020.pdf:1.55MB
The evaluated nuclear data for I and Nd stored in JENDL-3.3 were investigated comparing with other evaluated data and experimental data. New experimental data were available especially for the capture cross sections of both nuclides. The parameters used in theoretical calculations were modified so as to reproduce those experimental data. The statistical model calculation was performed using the revised parameters. The resonance parameters were also revised so that the cross sections measured in the thermal energy region were reproduced well. The present results were compiled in the ENDF-6 format.
IShirasu, Yoshiro; Minato, Kazuo
Journal of Nuclear Materials, 320(1-2), p.25 - 30, 2003/09
Times Cited Count：4 Percentile：31.21(Materials Science, Multidisciplinary)no abstracts in English
Kitamura, Toshikatsu; Togawa, Orihiko; Aramaki, Takafumi; Suzuki, Takashi; Kabuto, Shoji*
Dai-15-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.1 - 6, 2003/03
no abstracts in English
Hatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Hayakawa, Takehito; Shinohara, Nobuo; Kushita, Kohei; Ueno, Takashi; Toyoda, Kazuhiro*
Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.111 - 113, 2003/01
Times Cited Count：12 Percentile：61.32(Chemistry, Analytical)no abstracts in English
ray analysisHatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Hayakawa, Takehito; Shinohara, Nobuo; Kushita, Kohei; Ueno, Takashi
KEK Proceedings 2001-14, p.193 - 194, 2001/06
no abstracts in English
Aramaki, Takafumi; Mizushima, Toshihiko; Mizutani, Yoshihiko*; Yamamoto, Tadatoshi; Togawa, Orihiko; Kabuto, Shoji*; Kuji, Tomoyuki*; Gottdang, A.*; Klein, M.*; Mous, D. J. W.*
Nuclear Instruments and Methods in Physics Research B, 172(1-4), p.18 - 23, 2000/10
Times Cited Count：26 Percentile：82.12(Instruments & Instrumentation)no abstracts in English
Aramaki, Takafumi; Togawa, Orihiko; Kitamura, Toshikatsu
Proceedings of the International Workshop on Distribution and Speciation of Radionuclides in the Environment, p.350 - 353, 2000/00
no abstracts in English
Sakurai, Tsutomu; ; M.-L.Ye*; Kihara, Takehiro; Fujine, Sachio
Journal of Nuclear Science and Technology, 34(2), p.211 - 216, 1997/02
Times Cited Count：16 Percentile：75.26(Nuclear Science & Technology)no abstracts in English
Kato, Toshio*; Ogata, Yoshimune*; Harada, Hideo*; ; Sekine, Toshiaki;
Global 1995,Int. Conf. on Evaluation of Emerging Nuclear Fuel Cycle Systems, 2, p.1552 - 1559, 1995/00
no abstracts in English
Ota, Tomoko*; Hasegawa, Takuma*; Okamoto, Shunichi*; Watanabe, Yusuke
no journal, ,
no abstracts in English
I and 
Cl for radioactive rubblesOta, Yuki; Kurosawa, Kiyoko*; Motoki, Yoshiaki*; Do, V. K.; Furuse, Takahiro
no journal, ,
We have developed an analytical method of I (half-life: 1.57x10
years) and Cl (half-life: 3.01x10
years) in various radioactive rubbles generated by decommissioning of the Fukushima Daiichi Nuclear Power Plant (1F). A sequential chemical separation procedure has been developed to isolate the nuclides from the sample matrix, followed by the quantification by inductively coupled plasma-mass spectrometry (ICP-MS/MS) and liquid scintillation counting (LSC), respectively.
