Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Iwai, Yasunori; Kubo, Hitoshi*; Oshima, Yusuke*
Isotope News, (736), p.12 - 17, 2015/08
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 530kGy, a standard for radiation resistance, and maintenance of thermal stability at over 600
C, which is much higher than the 70C 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.
Isobe, Kanetsugu; Nakamura, Hirofumi; Kaminaga, Atsushi; Tsuzuki, Kazuhiro; Higashijima, Satoru; Nishi, Masataka; Kobayashi, Yasunori*; Konishi, Satoshi*
Fusion Engineering and Design, 81(1-7), p.827 - 832, 2006/02
Times Cited Count：11 Percentile：60.11(Nuclear Science & Technology)Exhaust gas from JT-60U during experimental operation has been measured with Gas Chromatography (GC), and the gas exhaust characteristic from JT-60U on plasma discharge conditions has been investigated during the JT-60U experimental campaign in 2003-2004. During experimental operation of JT-60U, hydrogen isotope concentration strongly depended on the type of discharges such as high performance, long pulse and so on. On the other hand, impurity species, such as helium, hydrocarbon and carbon oxide, were detected during plasma discharges occasionally. During the experimental operation, plasma disruption remarkably tended to produce high concentration impurities. Glow discharge and Taylor discharge for wall conditioning also produced impurities. In the case of normal plasma, impurity was detected and high performance plasma, such as high 
plasma, tended to produce high concentration impurities. This result indicated that impurities concentration might be higher in the case of normal plasma in ITER, because of its high performance.
Yamanishi, Toshihiko; Hayashi, Takumi; Kawamura, Yoshinori; Iwai, Yasunori; Isobe, Kanetsugu; Uzawa, Masayuki*; Nishi, Masataka
Fusion Science and Technology, 48(1), p.63 - 66, 2005/07
Times Cited Count：6 Percentile：40.41(Nuclear Science & Technology)no abstracts in English
/He mixed gas under room temperatureTanzawa, Sadamitsu; Hiroki, Seiji; Abe, Tetsuya
Shinku, 46(3), p.154 - 157, 2003/03
no abstracts in English
Iwai, Yasunori; Yamanishi, Toshihiko; Ohira, Shigeru; Suzuki, Takumi; Shu, Wataru; Nishi, Masataka
Fusion Engineering and Design, 61-62, p.553 - 560, 2002/11
Times Cited Count：15 Percentile：65.5(Nuclear Science & Technology)no abstracts in English
Iwai, Yasunori; Nakamura, Hirofumi; Konishi, Satoshi; Nishi, Masataka; Willms, R. S.*
Fusion Science and Technology, 41(3), p.668 - 672, 2002/05
no abstracts in English
Iwai, Yasunori; Yamanishi, Toshihiko; Nishi, Masataka
Fusion Technology, 39(2-Part2), p.1078 - 1082, 2001/03
no abstracts in English
Nishi, Masataka; Yamanishi, Toshihiko; Kawamura, Yoshinori; Iwai, Yasunori; Isobe, Kanetsugu; Ohira, Shigeru; Hayashi, Takumi; Nakamura, Hirofumi; Kobayashi, Kazuhiro; Suzuki, Takumi; et al.
Fusion Engineering and Design, 49-50, p.879 - 883, 2000/11
Times Cited Count：4 Percentile：32.51(Nuclear Science & Technology)no abstracts in English
Yamanishi, Toshihiko; Kawamura, Yoshinori; Iwai, Yasunori; Arita, Tadaaki*; Maruyama, T.*; Kakuta, Toshiya*; Konishi, Satoshi; Enoeda, Mikio; Ohira, Shigeru; Hayashi, Takumi; et al.
Nuclear Fusion, 40(3Y), p.515 - 518, 2000/03
Times Cited Count：6 Percentile：20.97(Physics, Fluids & Plasmas)no abstracts in English
Aoki, Isao; Seki, Yasushi; *; *; Kim, Y.*
JAERI-Data/Code 99-004, 136 Pages, 1999/02
JAERI-Data-Code-99-004.pdf:5.82MB
no abstracts in English
Yamanishi, Toshihiko; Konishi, Satoshi; Hayashi, Takumi; Kawamura, Yoshinori; Iwai, Yasunori; Maruyama, T.*; Kakuta, Toshiya*; Ohira, Shigeru; Nakamura, Hirofumi; Kobayashi, Kazuhiro; et al.
Fusion Technology, 34(3), p.536 - 540, 1998/11
no abstracts in English
Yoshida, Hiroshi; O.Kveton*; J.Koonce*; D.Holland*; Haange, R.*
Fusion Engineering and Design, 39-40, p.875 - 882, 1998/00
Times Cited Count：25 Percentile：85.88(Nuclear Science & Technology)no abstracts in English
Aoki, Isao; Seki, Yasushi; *; *; C.Kim*
JAERI-Data/Code 97-042, 113 Pages, 1997/11
JAERI-Data-Code-97-042.pdf:3.59MB
no abstracts in English
Konishi, Satoshi; Yamanishi, Toshihiko; Enoeda, Mikio; Hayashi, Takumi; Ohira, Shigeru; Yamada, Masayuki; Suzuki, Takumi; Okuno, Kenji; Sherman, R. H.*; Willms, R. S.*; et al.
Fusion Engineering and Design, 28, p.258 - 264, 1995/00
Times Cited Count：4 Percentile：43.46(Nuclear Science & Technology)no abstracts in English
Konishi, Satoshi; Yoshida, Hiroshi; Naruse, Yuji; K.E.Binning*; R.V.Carlson*; Bartlit, J. R.*; Anderson, J. L.*
JAERI-M 93-090, 21 Pages, 1993/03
no abstracts in English
Konishi, Satoshi; Ohira, Shigeru; Hayashi, Takumi; Inoue, Masahiko*; Watanabe, Tetsuo*; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; W.Harbin*; Bartlit, J. R.*; et al.
JAERI-M 93-089, 46 Pages, 1993/03
no abstracts in English
Konishi, Satoshi; Ohira, Shigeru; Hayashi, Takumi; Watanabe, Tetsuo*; Inoue, Masahiko*; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; W.Harbin*; Bartlit, J. R.*; et al.
JAERI-M 93-088, 18 Pages, 1993/03
no abstracts in English
Ohira, Shigeru; Konishi, Satoshi; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; W.Harbin*; Bartlit, J. R.*; Anderson, J. L.*
JAERI-M 93-087, 29 Pages, 1993/03
no abstracts in English
Konishi, Satoshi; Hayashi, Takumi; Naruse, Yuji; Okuno, Kenji; R.V.Carlson*; Anderson, J. L.*
JAERI-M 93-086, 40 Pages, 1993/03
no abstracts in English
Konishi, Satoshi; Ohira, Shigeru; Inoue, Masahiko*; Watanabe, Tetsuo*; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; Sherman, R. H.*; Bartlit, J. R.*; Anderson, J. L.*
JAERI-M 93-085, 40 Pages, 1993/03
no abstracts in English
