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Iwamoto, Hiroki; Meigo, Shinichiro
EPJ Web of Conferences, 153, p.01016_1 - 01016_9, 2017/09
Times Cited Count：2 Percentile：78.04(Nuclear Science & Technology)Mukai, Masayuki; Ueda, Masato; Inada, Daisuke; Yukawa, Kazuhiko; Maeda, Toshikatsu; Iida, Yoshihisa
Proceedings of International Symposium NUCEF 2005, p.219 - 224, 2005/08
For better quantitative understanding of radionuclide migration for safety assessment of geologic disposal, JAERI has been conducting experimental and modeling studies on influences of humic substances, highly alkaline conditions and colloids on sorptive and diffusional behavior of TRU in geologic materials. In the absence of fulvic acid, one of humic substances, diffusion of Am through a tuff sample was not detected. By adding fulvic acid, Am was detected in the downstream cell, which indicates the diffusion through the sample. Highly alkaline conditions arisen from cementitious materials may spread by altering chemical and physical properties of geologic materials. Through-diffusion experiments of alkaline species in granite showed that the effective diffusion coefficient of Ca
and OH
in a cement-equilibrated aqueous solution were found to be higher by almost two orders of magnitude than Na
and OH in a NaOH solution. Radionuclide migration can be enhanced by colloids, and thus a calculation code describing the effect of colloids on radionuclide migration has been required.
Fusion Neutron Laboratory
JAERI-Review 2004-017, 163 Pages, 2004/07
JAERI-Review-2004-017.pdf:25.47MB
no abstracts in English
Iguchi, Tadashi; Shibamoto, Yasuteru; Asaka, Hideaki; Nakamura, Hideo
Proceedings of 10th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-10), 16 Pages, 2003/10
Thermal-hydraulic and neutronic dynamics are always interrelated in BWR core. This is called thermal-hydraulic and neutronic (T/N) coupling. Channel stability experiments with T/N coupling under non-nuclear condition are very limited. This is mainly due to the difficulties in the real-time simulation of neutron dynamics and in the fast-response void fraction measurement under high-pressure and temperature conditions. Authors have developed techniques to solve the above difficulties, and have succeeded in experimentally simulating T/N coupling under non-nuclear conditions with the THYNC facility. Using THYNC facility, T/N coupling effect on channel stability was investigated. Experiments were performed under Pressure=2-7MPa, Subcooling=10-40K, and Mass flux=270-660kg/m
s. THYNC results indicated T/N coupling lowered the channel stability threshold. The reduction of channel stability threshold due to T/N coupling was small within 10% at 7MPa in the present THYNC experiment, although the experimental condition was set to be more severe than that supposed in a reactor.
fuelsUne, Katsumi*; Nogita, Kazuhiro*; Suzaka, Yojiro*; Hayashi, Kimio; Ito, Kunio*; Eto, Yoshinori*
International Topical Meeting on Light Water Reactor Fuel Performance, 2, p.775 - 785, 2000/00
no abstracts in English
bombarded with iodine and nickel ions at energies around 100 MeVHayashi, Kimio; ; Fukuda, Kosaku
Advances in Science and Technology, 24, p.439 - 446, 1999/00
no abstracts in English
Nakajima, Ken; ;
Proceedings of 6th International Conference on Nuclear Criticality Safety (ICNC '99), 3, p.1286 - 1292, 1999/00
no abstracts in English
benchmark experimentOkajima, Shigeaki; Zuhair*; Sakurai, Takeshi; H.Song*
Journal of Nuclear Science and Technology, 35(12), p.963 - 965, 1998/12
Times Cited Count：2 Percentile：24.49(Nuclear Science & Technology)no abstracts in English
Maekawa, Fujio; Konno, Chikara; Oyama, Yukio; Uno, Yoshitomo; Maekawa, Hiroshi; Ikeda, Yujiro
Fusion Engineering and Design, 42, p.275 - 280, 1998/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
by high-energy heavy ionsHayashi, Kimio; ; Fukuda, Kosaku
Journal of Nuclear Materials, 248, p.191 - 195, 1997/00
Times Cited Count：21 Percentile：82.17(Materials Science, Multidisciplinary)no abstracts in English
/
of VHTRC-4 coreYamane, Tsuyoshi; Akino, Fujiyoshi;
PHYSOR 96: Int. Conf. on the Physics of Reactors, 2, p.E290 - E299, 1996/00
no abstracts in English
C in the fast critical facility FCAOkajima, Shigeaki; Oigawa, Hiroyuki; Ando, Masaki; Mukaiyama, Takehiko
Proc. of 9th Int. Symp. on Reactor Dosimetry, 0, p.172 - 179, 1996/00
no abstracts in English
Konno, Chikara; Maekawa, Fujio; *; Kosako, Kazuaki*; Ikeda, Yujiro; Oyama, Yukio; Maekawa, Hiroshi
JAERI-Tech 94-019, 43 Pages, 1994/10
no abstracts in English
implanted with 100 MeV iodine ionsHayashi, Kimio; ; Fukuda, Kosaku
Journal of Alloys and Compounds, 213-214, p.351 - 353, 1994/00
Times Cited Count：5 Percentile：48.01(Chemistry, Physical)no abstracts in English
Kunugi, Tomoaki; *; *
Heat Transfer in Turbulent Flows, 1993; HTD-Vol. 246, p.25 - 31, 1993/00
no abstracts in English
C at FCAOkajima, Shigeaki; Oigawa, Hiroyuki; Mukaiyama, Takehiko; *; Kasahara, Y.*; *
Transactions of the American Nuclear Society, 66, p.523 - 524, 1992/11
no abstracts in English
; Akino, Fujiyoshi;
Journal of Nuclear Science and Technology, 25(9), p.673 - 681, 1988/09
Times Cited Count：8 Percentile：64.94(Nuclear Science & Technology)no abstracts in English
*;
Journal of Nuclear Science and Technology, 24(1), p.1 - 11, 1987/01
Times Cited Count：6 Percentile：55.66(Nuclear Science & Technology)no abstracts in English
; ; ; ;
Nuclear Instruments and Methods in Physics Research A, 256, p.333 - 338, 1987/00
Times Cited Count：21 Percentile：87.8(Instruments & Instrumentation)no abstracts in English
Journal of Nuclear Materials, 133-134, p.361 - 364, 1985/00
Times Cited Count：52 Percentile：97.32(Materials Science, Multidisciplinary)no abstracts in English
