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Journal Articles

Educational material kit to learn radiation effect on plastic

Nagasawa, Naotsugu; Taguchi, Mitsumasa

Isotope News, (736), p.47 - 50, 2015/08

no abstracts in English

Journal Articles

Successful development of a new catalyst for efficiently collecting tritium; A Breakthrough toward realization of fusion reactors

Iwai, Yasunori; Kubo, Hitoshi*; Oshima, Yusuke*

Kagaku, 70(5), p.35 - 40, 2015/05

We have successfully developed a new hydrophobic platinum catalyst for collecting tritium at nuclear fusion reactors. Catalysts used to collect tritium are called hydrophobic precious metal catalysts. In Japan, hydrophobic precious metal catalysts manufactured from polymers have been used for heavy water refinement. However, this catalyst has issues related to embrittlement to radiation and thermal stability. These technological issues needed to be solved to allow for its application to nuclear fusion reactors requiring further enrichment from highly-concentrated tritiated water. We developed a new method of manufacturing catalysts involving hydrophobic processing with an inorganic substance base. As a result, previous technological issues were able to be solved with the development of a catalyst that exhibited no performance degradation in response to radiation application of 530 kGy, a standard for radiation resistance, and maintenance of thermal stability at over 600$$^{circ}$$C, which is much higher than the 70$$^{circ}$$C temperature that is normally used. The catalyst created with this method was also confirmed to have achieved the world's highest exchange efficiency, equivalent to 1.3 times the previously most powerful efficiency. The application of this catalyst to the liquid phase catalytic exchange process is expected to overcome significant technological hurdles with regards to improving the reliability and efficiency of systems for collecting tritium from tritiated water.

Journal Articles

Ion-beam and $$gamma$$-ray irradiations induce thermotolerant mutants in the entomopathogenic fungus ${it Metarhizium anisopliae s.l.}$

Fitriana, Y.*; Sato, Katsuya; Narumi, Issey*; Saito, Tsutomu*

Biocontrol Science and Technology, 24(9), p.1052 - 1061, 2014/06

 Times Cited Count:1 Percentile:90.37(Biotechnology & Applied Microbiology)

Journal Articles

Modification of enviromentally-friendly polymer by radiation and its applications in agriculture and welfare fields

Yagi, Toshiaki

Dai-14-Kai Hoshasen Riyo Gijutsu Semina; Hirogaru Hoshasen No Sangyo Riyo Koen Tekisuto, p.67 - 72, 2004/10

no abstracts in English

Journal Articles

Development of novel plastics by radiation technology

Nagasawa, Naotsugu; Yagi, Toshiaki

Science & Technology Journal, 13(10), p.20 - 21, 2004/10

no abstracts in English

Journal Articles

Application of carbon fiber reinforced carbon composite to nuclear engineering

Ishihara, Masahiro

Tanso, (208), p.135 - 144, 2003/09

no abstracts in English

Journal Articles

Heat stability of Mo/Si multilayers inserted with compound layers

Ishino, Masahiko; Yoda, Osamu; Takenaka, Hisataka*; Sano, Kazuo*; Koike, Masato

Surface & Coatings Technology, 169-170(1-3), p.628 - 631, 2003/06

no abstracts in English

Journal Articles

Radiation crosslinking of poly(butylene succinate) in the presence of low concentration of trimethallyl isocyanurate and its properties

Suhartini, M.; Mitomo, Hiroshi*; Nagasawa, Naotsugu; Yoshii, Fumio; Kume, Tamikazu

Journal of Applied Polymer Science, 88(9), p.2238 - 2246, 2003/00

 Times Cited Count:35 Percentile:22.79(Polymer Science)

no abstracts in English

Journal Articles

Heat stability of Mo/Si multilayers inserted with silicon oxide layers

Ishino, Masahiko; Yoda, Osamu; Sano, Kazuo*; Koike, Masato

X-Ray Mirrors, Crystals, and Multilayers II (Proceedings of SPIE Vol.4782), p.277 - 284, 2002/12

no abstracts in English

Journal Articles

Optimization of the silicon oxide layer thicknesses inserted in the Mo/Si multilayer interfaces for high heat stability and high reflectivity

Ishino, Masahiko; Yoda, Osamu

Journal of Applied Physics, 92(9), p.4952 - 4958, 2002/11

 Times Cited Count:5 Percentile:73.16(Physics, Applied)

no abstracts in English

Journal Articles

Radiation crosslinking of rubber

Makuuchi, Keizo

Nippon Gomu Kyokai-Shi, 75(2), p.85 - 89, 2002/02

no abstracts in English

Journal Articles

Change of heat resistance on spore forming bacteria after irradiation

Ito, Hitoshi*

Shokuhin Shosha, 36(1-2), p.1 - 7, 2001/09

no abstracts in English

JAEA Reports

Investigation of the properties of high temperature resistance alloys used in the helium gas cooled high temperature reactor

Uwaba, Tomoyuki

JNC-TN9420 2000-005, 28 Pages, 2000/03

JNC-TN9420-2000-005.pdf:0.94MB

In the first phase of the feasibility study, their basic objectives are presentating the feasible image and scenario of development of the FBR cycle system, which is composed of the fast reactor, spent fuel reprocessing and fuel manufacturing facility. In the development of the FBR system in this phase, various ideas of plants are to be studied, which include coolant types such as sodium, heavy metals, gases(CO$$_{2}$$, He), wator, and middle or small size of the reactor, and fuel types (MOX, metal and nitride). In this report, as a part of this study, materials used for the core of the helium gas cooled reactor and their integrity (corrosion, mechanical and irradiation property) under high temperature helium atmosphere were investigated from open literatures.

JAEA Reports

Design and manufacture of a testing device for the evaluation of optical elements

Shimizu, Yuichi; Yoda, Osamu; Sasuga, Tsuneo*; Teraoka, Yuden; Yokoya, Akinari; Yanagihara, Mihiro*

JAERI-Tech 2000-021, p.45 - 0, 2000/03

JAERI-Tech-2000-021.pdf:3.01MB

no abstracts in English

Journal Articles

Radiation crosslinking and degradation of biodegradable polymer and its application

Yoshii, Fumio

Kombatekku, 28(3), p.5 - 9, 2000/03

no abstracts in English

Journal Articles

Radiation processing of biodegradable polymer, 1; Crosslinking of aliphatic polymer and its application

Yoshii, Fumio; Darwis, D.*; Nugroho, P.*; Mitomo, Hiroshi*

IAEA-SM-365, p.7 - 8, 2000/00

no abstracts in English

Journal Articles

Development of environmentally friendly polymers

Yoshii, Fumio

Hoshasen To Sangyo, (82), p.26 - 30, 1999/06

no abstracts in English

Journal Articles

Improvement of heat stability of biodegradable PCL by radiation crosslinking

Yoshii, Fumio

Purasuchikku Eji, 44(10), p.144 - 147, 1998/10

no abstracts in English

Journal Articles

Ceramic synthesized by radiation; Heat resistant silicon carbide fiber

Seguchi, Tadao

Genshiryoku eye, 44(8), p.16 - 17, 1998/08

no abstracts in English

Journal Articles

Modification of biodegradable PCL by radiation

Yoshii, Fumio

Hoshasen To Sangyo, (80), p.48 - 50, 1998/00

no abstracts in English

50 (Records 1-20 displayed on this page)