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Sakai, Hideaki*; Fujioka, Jun*; Fukuda, Tatsuo; Bahramy, M. S.*; Okuyama, Daisuke*; Arita, Ryotaro*; Arima, Takahisa*; Baron, A. Q. R.*; Taguchi, Yasujiro*; Tokura, Yoshinori*
Physical Review B, 86(10), p.104407_1 - 104407_11, 2012/09
Times Cited Count：30 Percentile：74.57(Materials Science, Multidisciplinary)Taguchi, Yasujiro*; Sakai, Hideaki*; Okuyama, Daisuke*; Ishiwata, Shintaro*; Fujioka, Jun*; Fukuda, Tatsuo; Hashizume, Daisuke*; Kagawa, Fumitaka*; Takahashi, Yoichiro*; Shimano, Ryo*; et al.
Physica B; Condensed Matter, 407(11), p.1685 - 1688, 2012/06
Times Cited Count：5 Percentile：23.87(Physics, Condensed Matter)Maki, Akira; ; Taguchi, Katsuya; ; Shimizu, Ryo; Shoji, Kenji;
JNC TN8410 2001-012, 185 Pages, 2001/04
JNC-TN8410-2001-012.pdf:9.61MB
"The third technological meeting of Tokai Reprocessing plant (TRP)" was held in JNFL Rokkasyo site on March 14
, 2001. The technical meetings have been held in the past two times. The first one was about the present status and future plan of the TRP and second one was about safety evaluation work on the TRP. At this time, the meeting focussed on the corrosion experrience, in-service inspection technology and future maintenance plan. The report contains the proceedings, transparancies and questionnaires of the meeting are contained.
Takenaka, Nobuyuki*; Asano, Hitoshi*; Fujii, Terushige*; Ushiro, Toshihiko*; Iwatani, Junji*; Murata, Yutaka*; Mochiki, Koichi*; Taguchi, Akira*; Matsubayashi, Masahito; Tsuruno, Akira
Nuclear Instruments and Methods in Physics Research A, 377(1), p.174 - 176, 1996/07
Times Cited Count：1 Percentile：23.5(Instruments & Instrumentation)no abstracts in English
*; *; Fujii, Terushige*; *; *; *; Matsubayashi, Masahito; Tsuruno, Akira
Fifth World Conf. on Neutron Radiography, 0, p.623 - 629, 1996/00
no abstracts in English
*; *; Fujii, Terushige*; *; *; *; Matsubayashi, Masahito; Tsuruno, Akira
Nuclear Instruments and Methods in Physics Research A, 377, p.153 - 155, 1996/00
Times Cited Count：8 Percentile：58.81(Instruments & Instrumentation)no abstracts in English
*; *; Fujii, Terushige*; *; *; *; Matsubayashi, Masahito; Tsuruno, Akira
Nuclear Instruments and Methods in Physics Research A, 377, p.170 - 173, 1996/00
Times Cited Count：0 Percentile：0.01(Instruments & Instrumentation)no abstracts in English
Sagisaka, Akito; Ogura, Koichi; Pirozhkov, A. S.; Nishikino, Masaharu; Kon, Akira; Nishiuchi, Mamiko; Esirkepov, T. Z.; Kando, Masaki; Kawachi, Tetsuya; Kondo, Kiminori; et al.
no journal, ,
High-intensity laser and thin-foil interactions produce high-energy particles and hard X-ray. A proton beam driven by a high-intensity laser has received attention as a ion source for medical and other applications. We have performed high energy laser-matter interaction experiments using a thin-foil target irradiated by LFEX laser at Osaka University. The three beams were focused at a thin-foil target. The maximum proton energy of 
40 MeV energy were observed at the total laser energy of 1 kJ. The proton acceleration experiment with plasma mirror are started.
Idesaki, Akira; Sugimoto, Masaki; Shimada, Akihiko; Yamamoto, Shunya; Taguchi, Mitsumasa; Yamaki, Tetsuya
no journal, ,
Recently, development of platinum-substitute catalysts has been studied extensively; it has been found that a nitrogen-containing carbon material shows oxygen reduction activity almost same as platinum metal. We have been studying about synthesis process of a nitrogen-containing carbon material by pyrolysis of polymer precursors which are easy to be shaped as fiber, film, and so on. In this work, some materials were selected as polymer precursors and their organic-inorganic conversion process were investigated. It was found that polyimide and phenol resin show high carbon yield of 50-60% and graphite structure is formed above 800
C.
Nagasawa, Naotsugu; Kimura, Atsushi; Idesaki, Akira; Ishii, Yasuyuki; Yamada, Naoto; Koka, Masashi; Shimada, Akihiko; Okubo, Takeru; Sato, Takahiro; Taguchi, Mitsumasa
no journal, ,
no abstracts in English
Barr, L.; Idesaki, Akira*; Taguchi, Mitsumasa*; Yamaguchi, Tetsuji
no journal, ,
Water treatment waste from the ALPS system at Fukushima Daiichi Nuclear Power Station is stored in high density polyethylene containers. During the storage period radiation leads to degradation of the polymer properties. This study investigated the extent and rate of polymer degradation induced by radiation. The irradiation conditions were altered to represent the storage environment and the composition of the waste produced by the ALPS system. Increasing the irradiation temperature changes the rate of diffusion of reactive species and leads to greater oxidative degradation of the polymer. More aromatic antioxidants provide greater protection against radiation compared with aliphatic additives. Irradiation in water rather than air limits the availability of oxygen and reduces the degree of oxidative degradation. Increasing the pH of the aqueous phase results in an increase in tensile strength of the polymer than irradiation in deionised water, which is attributed to the increased formation of double bonds and crosslinks following hydrogen extraction by the reactive water radiolysis products. The results of the study show the importance of the specific environment and conditions of irradiation and highlight the different degradation pathways that containers will be subjected to throughout their operational lifetime.
-ray irradiationIdesaki, Akira*; Barr, L.; Taguchi, Mitsumasa*; Yamaguchi, Tetsuji
no journal, ,
Because 1F water treatment secondary waste slurry is stored in a high-performance polyethylene container, it is necessary to understand radiation degradation of polyethylene. In particular, this study was conducted because there is no knowledge about the influence of water or slurry. Stress cracking properties, one of the indicators of degradation of polyethylene, were different in air and in water (and in slurry). This difference was considered together with the results of other characteristic tests. In addition, it was revealed that degradation is effectively suppressed in any environment by containing an antioxidant in polyethylene.
