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Aramaki, Takafumi*; Senju, Tomoharu*; Togawa, Orihiko; Otosaka, Shigeyoshi; Suzuki, Takashi; Kitamura, Toshikatsu; Amano, Hikaru; Volkov, Y. N.*
Radiocarbon, 49(2), p.915 - 924, 2007/10
Times Cited Count：8 Percentile：24(Geochemistry & Geophysics)no abstracts in English
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：68.37(Instruments & Instrumentation)no abstracts in English
Amano, Hikaru; Kabuto, Shoji; Kinoshita, Naoki; Suzuki, Takashi; Tanaka, Takayuki; Otosaka, Shigeyoshi; Kuwabara, Jun; Kitada, Yoshinobu*; Watanabe, Yukiya*; Kitamura, Toshikatsu
Dai-19-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.1 - 4, 2007/01
no abstracts in English
Suzuki, Takashi; Kitamura, Toshikatsu; Kabuto, Shoji*; Togawa, Orihiko; Amano, Hikaru
Journal of Nuclear Science and Technology, 43(11), p.1431 - 1435, 2006/11
Times Cited Count：13 Percentile：65.83(Nuclear Science & Technology)no abstracts in English
Suzuki, Takashi; Kitamura, Toshikatsu; Kabuto, Shoji; Togawa, Orihiko; Kinoshita, Naoki; Amano, Hikaru
JAEA-Technology 2006-018, 40 Pages, 2006/03
JAEA-Technology-2006-018.pdf:4.33MB
An accelerator mass spectrometry has been set up at the Mutsu Establishment of Japan Atomic Energy Agency. This AMS has two independent beam lines, optimized for 
C and I measurements. For the I measurement, precision and reproducibility was 2.0 - 1.5% and 1.5 - 0.7%, respectively at the acceptance test in July 2000, and after that, exchange of MCP and re-alignment improved precision and reproducibility to 0.6% and 0.26%, respectively. The results of testing standard materials, which have a variety of iodine isotopic ratios (I/
I), showed that this beam line has excellent measurement accuracy between 10
and 10
iodine isotopic ratios, and the detection limit is substantially below the 10
iodine isotopic ratio. Sub-standard samples were normalized to NIST SRM 3230 standard reference material, and the iodine isotopic ratio was (1.21
0.01)
10 for Iso Trace Lab. Standard, (7.220.03)10
for Standard No. 3K and (2.770.03)10 for Standard No. 3i.
Amano, Hikaru; Kabuto, Shoji; Kinoshita, Naoki; Suzuki, Takashi; Kitamura, Toshikatsu
UTTAC-74, p.77 - 81, 2006/00
no abstracts in English
Kitamura, Toshikatsu; Kabuto, Shoji*; Suzuki, Takashi; Amano, Hikaru; Kitada, Yoshinobu*; Watanabe, Yukiya*
Dai-17-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.52 - 55, 2004/12
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
Suzuki, Takashi; Aramaki, Takafumi; Kitamura, Toshikatsu; Togawa, Orihiko
Nuclear Instruments and Methods in Physics Research B, 223-224(1-4), p.87 - 91, 2004/08
Times Cited Count：13 Percentile：63.95(Instruments & Instrumentation)At the Japan Atomic Energy Research Institute, an Accelerator Mass Spectrometer which was installed in Mutsu establishment has two independent beam lines. We verified the precision, the accuracy and the detection limit at this AMS iodine line. Acceptance test for I measurement was carried out on two consecutive days and the I/I ratios obtained during these two days were (7.4970.119) 10 and (7.2090.050) 10 , respectively and the relative standard deviations from the I/I averages per sample were 1.6 % and 0.7 %, respectively. Seawater samples were collected in the western North Pacific and off Rokkasho, Japan before the operation of a nuclear fuel reprocessing plant. Seawater samples preparation for I -AMS measurement was performed by an extraction method. This paper was summarized the performance of this AMS iodine line and measurement results of I/I ratio in seawater samples.
Aramaki, Takafumi*; Togawa, Orihiko; Kitamura, Toshikatsu
Dai-16-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.170 - 172, 2004/02
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
Suzuki, Takashi; Aramaki, Takafumi*; Kitamura, Toshikatsu; Togawa, Orihiko
Dai-16-Kai Tandemu Kasokuki Oyobi Sono Shuhen Gijutsu No Kenkyukai Hokokushu, p.162 - 165, 2004/02
no abstracts in English
Suzuki, Takashi; Kitamura, Toshikatsu; Togawa, Orihiko; Amano, Hikaru
UTNST-SMP-12, p.116 - 121, 2003/12
no abstracts in English
Ito, Toshimichi; Aramaki, Takafumi; Kitamura, Toshikatsu; Otosaka, Shigeyoshi; Suzuki, Takashi; Togawa, Orihiko; Kobayashi, Takuya; Senju, Tomoharu*; Chaykovskaya, E. L.*; Karasev, E. V.*; et al.
Journal of Environmental Radioactivity, 68(3), p.249 - 267, 2003/07
Times Cited Count：40 Percentile：62.84(Environmental Sciences)The anthropogenic radionuclides, 
Sr, 
Cs and 
Pu, in the seawater column of the Japan Sea were measured during 1997-2000. The vertical profiles of radionuclide concentrations showed their typical features; exponential decrease with depth for the Sr and Cs and surface minimum - subsurface maximum for the Pu, and there are no substantial differences between the present study and the previous ones. The area-averaged concentrations and the inventories of radionuclides in the Japan Sea are higher than those in the Northwest Pacific Ocean. In the spatial distributions, high inventory area extends and intrudes from the Japan Basin into the Yamato Basin. It is suggested that radionuclides sink by the vertical transport occurring mainly in the Japan Basin then advect into the Yamato Basin after detouring around the Yamato Rise, and finally, they are accumulated in the deep seawater of the Japan Sea.
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
Kitamura, Toshikatsu; Togawa, Orihiko; Aramaki, Takafumi; Suzuki, Takashi; Mizutani, Yoshihiko*; Kabuto, Shoji*; Sudo, Kazuhiko*
JNC TN7200 2001-001, p.31 - 34, 2002/01
no abstracts in English
Kitamura, Toshikatsu; Aramaki, Takafumi; Mizutani, Yoshihiko*; Togawa, Orihiko; Mizushima, Toshihiko; Kabuto, Shoji*; Sudo, Kazuhiko*
JAERI-Conf 2000-019, p.26 - 29, 2001/02
no abstracts in English
Gottdang, A.*; Klein, M.*; Mous, D. J. W.*; Kitamura, Toshikatsu; Mizutani, Yoshihiko*; Suzuki, Takashi; Aramaki, Takafumi; Togawa, Orihiko; Kabuto, Shoji*; Sudo, Kazuhiko*
AIP Conference Proceedings 576, p.403 - 406, 2001/00
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
