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Koyama, Shinichi; Ikeuchi, Hirotomo; Mitsugi, Takeshi; Maeda, Koji; Sasaki, Shinji; Onishi, Takashi; Tsai, T.-H.; Takano, Masahide; Fukaya, Hiroyuki; Nakamura, Satoshi; et al.
Hairo, Osensui, Shorisui Taisaku Jigyo Jimukyoku Homu Peji (Internet), 216 Pages, 2023/11
In FY 2021 and 2022, JAEA perfomed the subsidy program for "the Project of Decommissioning and Contaminated Water Management (Development of Analysis and Estimation Technology for Characterization of Fuel Debris (Development of Technologies for Enhanced Analysis Accuracy, Thermal Bahavior Estimation, and Simplified Analysis of Fuel Debris)" started in FY 2021. This presentation material summarized the results of the project, which will be available shortly on the website of Management Office for the Project of Decommissioning, Contaminated Water and Treated Water Management.
Onishi, Takashi; Sekioka, Ken*; Suto, Mitsuo*; Tanaka, Kosuke; Koyama, Shinichi; Inaba, Yusuke*; Takahashi, Hideharu*; Harigai, Miki*; Takeshita, Kenji*
Energy Procedia, 131, p.151 - 156, 2017/12
Times Cited Count：13 Percentile：99.03(Energy & Fuels)no abstracts in English
Autsavapromporn, N.*; Plante, I.*; Liu, C.*; Konishi, Teruaki*; Usami, Noriko*; Funayama, Tomoo; Azzam, E.*; Murakami, Takeshi*; Suzuki, Masao*
International Journal of Radiation Biology, 91(1), p.62 - 70, 2015/01
Times Cited Count：31 Percentile：92.38(Biology)Radiation-induced bystander effects have important implications in radiotherapy. Their persistence in normal cells may contribute to risk of health hazards, including cancer. This study investigates the role of radiation quality and gap junction intercellular communication (GJIC) in the propagation of harmful effects in progeny of bystander cells. Confluent human skin fibroblasts were exposed to microbeam radiations with different linear energy transfer (LET) by which 0.036
0.4% of the cells were directly targeted by radiation. Following 20 population doublings, the cells were harvested and assayed for micronucleus formation, gene mutation and protein oxidation. The results showed that expression of stressful effects in the progeny of bystander cells is dependent on LET.
-wave halos at the drip-line; 
NeNakamura, Takashi*; Kobayashi, Nobuyuki*; Kondo, Yosuke*; Sato, Yoshiteru*; Tostevin, J. A.*; Utsuno, Yutaka; Aoi, Nori*; Baba, Hidetada*; Fukuda, Naoki*; Gibelin, J.*; et al.
Physical Review Letters, 112(14), p.142501_1 - 142501_5, 2014/04
Times Cited Count：71 Percentile：91.56(Physics, Multidisciplinary)no abstracts in English
Takasaki, Koji; Yasumune, Takashi; Onishi, Takashi; Nakamura, Keisuke; Ishimi, Akihiro; Ito, Chikara; Osaka, Masahiko; Ono, Masashi*; Hatakeyama, Shuichi*; Takahashi, Hiroyuki*; et al.
JAEA-Research 2013-043, 33 Pages, 2014/01
JAEA-Research-2013-043.pdf:13.81MB
In the Fukushima Daiichi Nuclear Power Plant, it is assumed that the core fuels melted partially or wholly, and the normal technique of accounting for a fuel assembly is not applicable. Therefore, it is necessary to develop the transparent and rational technique of accounting in the process of collection and storage of fuel debris. In this research, an application of the superconducting phase Transition Edge Sensor microcalorimeter (TES microcalorimeter) is studied for the accounting of nuclear materials in the fuel debris. It is expected that the detailed information of nuclear materials and fission products in fuel debris is obtained by using a high-resolution characteristic of TES microcalorimeter. In this report, the principle of TES microcalorimeter, the measurement experiment using TES in JAEA, and the simulated calculation using the EGS5 code system are summarized.
Tanaka, Ichiro*; Kusaka, Katsuhiro*; Hosoya, Takaaki*; Niimura, Nobuo*; Ohara, Takashi*; Kurihara, Kazuo; Yamada, Taro*; Onishi, Yuki*; Tomoyori, Katsuaki*; Yokoyama, Takeshi*
Acta Crystallographica Section D, 66(11), p.1194 - 1197, 2010/11
Times Cited Count：51 Percentile：94.63(Biochemical Research Methods)The IBARAKI Biological Crystal Diffractometer (iBIX), a new diffractometer for protein crystallography at the next-generation neutron source at J-PARC (Japan Proton Accelerator Research Complex), has been constructed and has been operational since December 2008. Preliminary structure analyses of organic crystals showed that iBIX has high performance even at 120 kW operation and the first full data set is being collected from a protein crystal.
NeNakamura, Takashi*; Kobayashi, Nobuyuki*; Kondo, Yosuke*; Sato, Yoshiteru*; Aoi, Nori*; Baba, Hidetada*; Deguchi, Shigeki*; Fukuda, Naoki*; Gibelin, J.*; Inabe, Naoto*; et al.
Physical Review Letters, 103(26), p.262501_1 - 262501_4, 2009/12
Times Cited Count：207 Percentile：97.52(Physics, Multidisciplinary)no abstracts in English
Matsuda, Takeshi*; Noda, Masaru*; Iriya, Keishiro*; Konishi, Kazuhiro*; Nakayama, Masashi; Kobayashi, Yasushi
JAEA-Research 2007-089, 139 Pages, 2008/05
JAEA-Research-2007-089.pdf:13.57MB
In Horonobe Underground Research Center construction of underground facility began in 2005 and construction practicality test with HFSC (Highly Fly-ash contained Silica-fume Cement) is planned in a part of the gallery. Before the HFSC will be contracted in the gallery it is necessary to check that the HFSC has performance under the actual construction. The main work of this Japanese fiscal year is making a detailed test plan for the HSFC construction practicality, that is scheduled after 2007 and laboratory tests on lowering behavior of pH in the HFSC concrete were conducted. On the construction practicality test with low alkaline concrete, HFSC in-situ experiment plan was studied in case using HSFC424N as shotcrete. The aims of the in-situ test are the validation in applicability of low alkaline concrete as a support member for underground opening in the realistic geological environment and building the method to evaluate influence to the surrounding geological environment. The location of the in-situ test is in the connection tunnel of a depth of 140m and the geology is the Koetoi formation. The period of the test is approximately 10 years. The test plan was designed to be able to make a comparison with Ordinary Portland Cement. As it is necessary to confirm the strength property of the HFSC concrete with materials procured at construction site, strength of the base concrete using local procured fine aggregate and coarse aggregate based on the result of the selection of mix proportion in 2005 research was checked. On laboratory tests on lowering behavior of pH in HFSC concrete, the pH of immersion fluid was measured and components of the immersion fluid and the solid phase were analyzed using test specimens in a long-term immersion test which had been continued since 2005.
Kobayashi, Yasushi; Yamada, Tsutomu; Nakayama, Masashi; Matsui, Hiroya; Matsuda, Takeshi*; Konishi, Kazuhiro*; Iriya, Keishiro*; Noda, Masaru*
JAEA-Review 2007-007, 42 Pages, 2007/03
JAEA-Review-2007-007.pdf:3.12MB
Shotcrete and lining will be used for safety under construction and operational period in HLW repository. Concrete is a kind of composite material which is constituted by aggregate, cement and other mixture. Low alkaline cement has been developed from the viewpoint of long term stability of the barrier systems which would be influenced by high alkaline arising from cement material. HFSC is one of a low alkaline cement. It has been developed in Japan Atomic Energy Agency. JAEA are now implementing the construction of the under ground research laboratory (URL) at Horonobe. This report shows the in situ test plan for shotcrete using HFSC at Horonobe URL with identifying requirements for cement materials to be used in HLW repository, and also reviews major literatures of low alkaline cement. This in situ test plan is aiming to assess the performance of HFSC shotcrete in terms of mechanics, workability, durability, and so on.
n diodes due to heavy ion irradiationHirao, Toshio; Laird, J. S.; Onoda, Shinobu; Shibata, Toshihiko*; Wakasa, Takeshi; Yamakawa, Takeshi; Abe, Hiroshi; Takahashi, Yoshihiro*; Onishi, Kazunori*; Ito, Hisayoshi
Proceedings of the 6th International Workshop on Radiation Effects on Semiconductor Devices for Space Application (RASEDA-6), p.105 - 109, 2004/10
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：20.81(Physics, Fluids & Plasmas)no abstracts in English
Ohira, Shigeru; Hayashi, Takumi; Nakamura, Hirofumi; Kobayashi, Kazuhiro; Tadokoro, Takahiro*; Nakamura, H.*; Ito, Takeshi*; Yamanishi, Toshihiko; Kawamura, Yoshinori; Iwai, Yasunori; et al.
Nuclear Fusion, 40(3Y), p.519 - 525, 2000/03
Times Cited Count：24 Percentile：58.44(Physics, Fluids & Plasmas)no abstracts in English
Takahashi, Yoshihiro*; Onishi, Kazunori*; Fujimaki, Takeshi*; Yoshikawa, Masahito
IEEE Transactions on Nuclear Science, 46(6), p.1578 - 1585, 1999/12
Times Cited Count：23 Percentile：82.61(Engineering, Electrical & Electronic)no abstracts in English
Ohira, Shigeru; Hayashi, Takumi; Nakamura, Hirofumi; Kobayashi, Kazuhiro; Tadokoro, Takahiro*; Nakamura, H.*; Ito, Takeshi*; Yamanishi, Toshihiko; Kawamura, Yoshinori; Iwai, Yasunori; et al.
Fusion Energy 1998, 3, p.1069 - 1072, 1998/10
no abstracts in English
Yoshikawa, Masahito; Oshima, Takeshi; Ito, Hisayoshi; Nashiyama, Isamu; ; Onishi, K.*; Okumura, Hajime*; Yoshida, Sadafumi*
Denshi Joho Tsushin Gakkai Rombunshi, C-II, 81(1), p.140 - 150, 1998/01
no abstracts in English
-ray irradiation on the electrical characteristics of SiC metal-oxide-semiconductor structuresYoshikawa, Masahito; Oshima, Takeshi; Ito, Hisayoshi; Nashiyama, Isamu; Takahashi, Yoshihiro*; Onishi, K.*; Okumura, Hajime*; Yoshida, Sadafumi*
Electronics and Communication in Japan., Part2, 81(10), p.37 - 47, 1998/00
no abstracts in English
-raysYoshikawa, Masahito; ; Oshima, Takeshi; Ito, Hisayoshi; Nashiyama, Isamu; ; Onishi, K.*; Okumura, Hajime*; Yoshida, Sadafumi*
Mater. Sci. Forum, 264-268, p.1017 - 1020, 1998/00
no abstracts in English
Takahashi, Yoshihiro*; Onishi, Kazunori*; Fujimaki, Takeshi*; Yoshikawa, Masahito
Proceedings of 3rd International Workshop on Radiation Effects on Semiconductor Devices for Space Application, p.10 - 15, 1998/00
no abstracts in English
Saito, Kazunari; Yoshikawa, Masahito; Oshima, Takeshi; Ito, Hisayoshi; Nashiyama, Isamu; Takahashi, Yoshihiro*; Onishi, Kazunori*
JAERI-Conf 97-003, p.243 - 248, 1997/03
no abstracts in English
Yoshikawa, Masahito; ; Oshima, Takeshi; Ito, Hisayoshi; Nashiyama, Isamu; Yoshida, Sadafumi*; Okumura, Hajime*; Takahashi, Yoshihiro*; Onishi, Kazunori*
Journal of Applied Physics, 80(1), p.282 - 287, 1996/07
Times Cited Count：22 Percentile：70.47(Physics, Applied)no abstracts in English
