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Journal Articles

Radioactive tracer $$^{132}$$Cs (TRACs) for Fukushima Nuclear Power Plant accident

Nagai, Yasuki; Makii, Hiroyuki; Namiki, Shinji; Iwamoto, Osamu; Iwamoto, Nobuyuki; Sawahata, Hiroyuki*

Journal of the Physical Society of Japan, 81(8), p.085003_1 - 085003_2, 2012/08

 Times Cited Count:1 Percentile:10.83(Physics, Multidisciplinary)

We propose to use the radionuclide $$^{132}$$Cs as a tracer. $$gamma$$-ray energy of the most intense line from the decay of $$^{132}$$Cs is 668 keV, which is very near to that of the 662 keV from the decay of $$^{137}$$Cs, while the half-life of $$^{132}$$Cs is 6.5 d. $$^{132}$$Cs can be produced by nuclear reactions such as $$^{133}$$Cs(n,2n)$$^{132}$$Cs, $$^{133}$$Cs(r,n)$$^{132}$$Cs or $$^{132}$$Xe(p,n)$$^{132}$$Cs. The $$^{132}$$Cs tracer would be useful in the quantitative studies of radionuclide $$^{137}$$Cs contaminant in human, and in any experimental studies in the minimization of radionuclide $$^{137}$$Cs contamination in agricultural and stock farming products.

JAEA Reports

The Approaches of safety design and safety evaluation at HTTR (High Temperature Engineering Test Reactor)

Iigaki, Kazuhiko; Saikusa, Akio; Sawahata, Hiroaki; Shinozaki, Masayuki; Tochio, Daisuke; Homma, Fumitaka; Tachibana, Yukio; Iyoku, Tatsuo; Kawasaki, Kozo; Baba, Osamu*

JAEA-Review 2006-010, 90 Pages, 2006/07

JAEA-Review-2006-010.pdf:5.65MB

Gas Cooled Reactor has long history of nuclear development, and High Temperature Gas Cooled Reactor (HTGR) has been expected that it can be supply high temperature energy to chemical industry and to power generation from the points of view of the safety, the efficiency, the environment and the economy. The HTGR design is tried to installed passive safety equipment. The current licensing review guideline was made for a Low Water Reactor (LWR) on safety evaluation therefore if it would be directly utilized in the HTGR it needs the special consideration for the HTGR. This paper describes that investigation result of the safety design and the safety evaluation traditions for the HTGR, comparison the safety design and safety evaluation feature for the HTGT with it's the LWR, and reflection for next HTGR based on HTTR operational experiment.

Journal Articles

Simple multijunction launcher with oversized waveguides for lower hybrid current drive on JT-60U

Ikeda, Yoshitaka; Naito, Osamu; Seki, Masami; Kondoh, Takashi; Ide, Shunsuke; ; *; ; *; ; et al.

Fusion Engineering and Design, 24, p.287 - 298, 1994/00

 Times Cited Count:22 Percentile:85.05(Nuclear Science & Technology)

no abstracts in English

Journal Articles

The Distant coupling of LHCD launcher in the JT-60U

Seki, Masami; Ikeda, Yoshitaka; Imai, Tsuyoshi; Ushigusa, Kenkichi; Naito, Osamu; Ide, Shunsuke; Kondoh, Takashi; Nemoto, Masahiro; Takeuchi, Hiroshi; Suganuma, Kazuaki; et al.

Proc. of the 19th European Conf. on Controlled Fusion and Plasma Physics, p.985 - 988, 1992/00

no abstracts in English

Journal Articles

Efficient lower hybird current drive us ing multijunction launcher on JT-60

Ikeda, Yoshitaka; Imai, Tsuyoshi; Ushigusa, Kenkichi; Seki, Masami; *; Naito, Osamu; Honda, Masao; ; Maebara, Sunao; Nagashima, Takashi; et al.

Nuclear Fusion, 29(10), p.1815 - 1819, 1989/10

 Times Cited Count:24 Percentile:70.1(Physics, Fluids & Plasmas)

no abstracts in English

Oral presentation

Durability of centrifugal contactors under sludge inclusion condition, 3; Effect of sludge accumulation on fluidic performance

Sakamoto, Atsushi; Takeuchi, Masayuki; Ogino, Hideki; Koizumi, Kenji; Sawahata, Osamu*; Sakamoto, Yukio*; Akutsu, Koichi*

no journal, , 

no abstracts in English

Oral presentation

Durability of centrifugal contactors under sludge inclusion, 4; Clean-up performance for sludge in centrifugal contactors

Ohata, Fumikazu; Sakamoto, Atsushi; Takeuchi, Masayuki; Koizumi, Kenji; Sawahata, Osamu*; Sakamoto, Yukio*; Akutsu, Koichi*

no journal, , 

no abstracts in English

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