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Murakawa, Hideki*; Ueda, Tadanobu*; Yoshida, Takehisa*; Sugimoto, Katsumi*; Asano, Hitoshi*; Takenaka, Nobuyuki*; Mochiki, Koichi*; Iikura, Hiroshi; Yasuda, Ryo; Matsubayashi, Masahito
Nuclear Instruments and Methods in Physics Research A, 605(1-2), p.127 - 130, 2009/06
Times Cited Count:23 Percentile:81.44(Instruments & Instrumentation)Nojiri, Naoki; Handa, Yuichi*; Shimakawa, Satoshi; Goto, Minoru; Kaneko, Yoshihiko*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 5(3), p.241 - 250, 2006/09
It was shown from the annular core experiment of the HTTR that the discrepancy of excess reactivity between experiment and analysis reached about 3 % Dk/k at maximum. Sensitivity analysis for the annular core of the HTTR was performed to improve the discrepancy. The SRAC code system was used for the core analysis. As the results of the analysis, it was found clearly that the multiplication factor of the annular core is affected by (1) mesh interval in the core diffusion calculation, (2) mesh structure of graphite region in fuel lattice cell and (3) the Benoist's anisotropic diffusion coefficients. The significantly large discrepancy previously reported was reduced down to about 1 % Dk/k by the revised annular core model.
Nagata, Hiroshi*; Honda, Teruyuki*; Iwatsuki, Teruki; Mizuno, Takashi
no journal, ,
no abstracts in English
Tsuboi, Mariko*; Honda, Teruyuki*; Iwatsuki, Teruki; Mizuno, Takashi
no journal, ,
no abstracts in English
Inoshita, Shinya*; Hirai, Shoji*; Okada, Yukiko*; Suzuki, Shogo*; Kimura, Atsushi; Oshima, Masumi
no journal, ,
no abstracts in English
Nagata, Hiroshi*; Honda, Teruyuki*; Iwatsuki, Teruki
no journal, ,
Trace elements analysis have been carryed out to estimate the migration property of fault zone at Horonobe area, Hokkaido. The results show that the light Ln elements are highly sorped on the clay minerals in fault zone.
Nagata, Hiroshi*; Honda, Teruyuki*; Iwatsuki, Teruki; Mizuno, Takashi
no journal, ,
Trace element concentrations in sedimentary rocks were analyzed to estimate migration process at chemical weathering and carbonate filling part. The results show that the no migration was observed at chemical weathering part. On the oter hand, U and Th enrich at calcite filling part. The carbonate ligand generation possibly controls migration processes.