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-ironHirayama, Shintaro*; Sato, Koichi*; Kato, Daiji*; Iwakiri, Hirotomo*; Yamaguchi, Masatake; Watanabe, Yoshiyuki*; Nozawa, Takashi*
Nuclear Materials and Energy (Internet), 31, p.101179_1 - 101179_9, 2022/06
Times Cited Count：3 Percentile：68.71(Nuclear Science & Technology)no abstracts in English
Yoshiie, Toshimasa*; Futakawa, Masatoshi; Naoe, Takashi; Komatsu, Masao*; Sato, Koichi*; Xu, Q.*; Kawai, Masayoshi*
Materia, 52(8), p.390 - 394, 2013/08
In the liquid mercury target for the spallation neutron source, pressure waves occurs owing to the high-intense proton beam bombardment. The pressure waves induces the cavitation in the interface between the mercury and the target vessel through the propagation process. Erosion damage composed of micro-pits clusters is formed by the micro-jets and shock waves emitted from cavitation bubble collapse. In this paper, researches for damage structure of the material that was examined using the electroMagnetic IMpact Testing Machine (MIMTM) form the viewpoint of high-speed deformation. The result showed that the 200
300 m/s of collision velocity for micro-jet impacting which was estimated from the numerical simulation is reasonable value.
Fukada, Satoshi*; Edao, Yuki*; Sato, Koichi*; Takeishi, Toshiharu*; Katayama, Kazunari*; Kobayashi, Kazuhiro; Hayashi, Takumi; Yamanishi, Toshihiko; Hatano, Yuji*; Taguchi, Akira*; et al.
Fusion Engineering and Design, 87(1), p.54 - 60, 2012/01
Times Cited Count：4 Percentile：31.96(Nuclear Science & Technology)An experimental study on tritium (T) transfer in porous concrete for the tertiary T safety containment is performed to investigate (1) how fast HTO penetrates through concrete walls, (2) how well concrete walls contaminated with water-soluble T are decontaminated by a solution-in-water technique, and (3) how well hydrophobic paint coating works as a protecting film against HTO migrating through concrete walls. The epoxy paint coating can work as a HTO diffusion barrier and the PRF value is around 1/10. The silicon paint coating cannot work as the anti-T permeation barrier, because water deteriorates contact between the paint and cement or mortar.
Sato, Koichi*; Inoue, Kazuya*; Yoshiie, Toshimasa*; Xu, Q.*; Wakai, Eiichi; Kutsukake, Chuzo; Ochiai, Kentaro
Journal of Nuclear Materials, 386-388, p.203 - 205, 2009/04
Times Cited Count：2 Percentile：17.7(Materials Science, Multidisciplinary)V-4Cr-4Ti F82H, Ni and Cu were irradiated with fission and fusion neutrons at room temperature and 473 K. Defect structures were analyzed and compared using positron annihilation lifetime measurement, and microstructural evolution was discussed. The mean lifetime of positrons (the total amount of residual defects) increased with the irradiation dose. The effect of cascade impact was detected in Ni at room temperature. The size and the number of vacancy clusters were not affected by the displacement rate in the fission neutron irradiation at 473 K for the metals studied. The vacancy clusters were not formed in V Cr Ti irradiated at 473 K in the range of 10
-10
dpa. In F82H irradiated at 473 K, the defect evolution was prevented by pre-existing defects. The mean lifetime of positrons in fission neutron irradiation was longer than that in fusion neutron irradiation in V Cr Ti at 473 K. It was interpreted that more closely situated subcascades were formed in the fusion neutron irradiation and subcascades interacted with each other, and consequently the vacancy clusters did not grow larger.
Yoshiie, Toshimasa*; Xu, Q.*; Sato, Koichi*; Kikuchi, Kenji; Kawai, Masayoshi*
Journal of Nuclear Materials, 377(1), p.132 - 135, 2008/06
Times Cited Count：11 Percentile：59.16(Materials Science, Multidisciplinary)Reaction kinetic analysis was used to estimate the damage evolution in window materials of 800 MWth ADS. Parameters were fitted to F82H of the STIP-II experiment and EC316LN of the STIP-I experiment. In F82H, the concentration of bubbles was almost constant and the bubble size increased, while the concentration of interstitial type dislocation loops increased and their size was constant between 3
10 and 300 dpa. EC316LN showed almost the same behavior. Swelling increased almost linearly with irradiation dose above 3 dpa between 673 K and 773 K.
Sato, Satoshi; Maki, Koichi*
Fusion Engineering and Design, 65(4), p.501 - 524, 2003/07
Times Cited Count：8 Percentile：49.89(Nuclear Science & Technology)no abstracts in English
*; Sato, Satoshi; *
JAERI-Data/Code 97-002, 76 Pages, 1997/02
JAERI-Data-Code-97-002.pdf:2.15MB
no abstracts in English
Sato, Satoshi; Takatsu, Hideyuki; *; *; Iida, Hiromasa; R.Santoro*
Fusion Technology 1996, 0, p.1587 - 1590, 1997/00
no abstracts in English
Sato, Satoshi; Takatsu, Hideyuki; *; *; Mori, Seiji*; Iida, Hiromasa; R.Santoro*
Journal of Fusion Energy, 16(3), p.211 - 218, 1997/00
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)no abstracts in English
Sato, Satoshi; Takatsu, Hideyuki; *; Seki, Yasushi
J. Fusion Eng. Des., 30(3), p.1076 - 1080, 1996/12
no abstracts in English
*; Seki, Yasushi; Sato, Satoshi; *
Purazuma, Kaku Yugo Gakkai-Shi, 71(10), p.987 - 1001, 1995/10
no abstracts in English
S.Zimin*; *; Takatsu, Hideyuki; Sato, Satoshi; Tsunematsu, Toshihide; Inoue, Takashi; Ohara, Yoshihiro
JAERI-Tech 94-015, 37 Pages, 1994/08
no abstracts in English
Sato, Satoshi; *; Seki, Yasushi; Takatsu, Hideyuki; Mori, Seiji*
Proc. of the 8th Int. Conf. on Radiation Shielding, 0, p.1039 - 1046, 1994/00
no abstracts in English
Sato, Satoshi; *; Seki, Yasushi; Takatsu, Hideyuki; Mori, Seiji*
Proc. of the 8th Int. Conf. on Radiation Shielding, 0, p.946 - 953, 1994/00
no abstracts in English
S.Zimin*; Takatsu, Hideyuki; Mori, Seiji*; *; Seki, Yasushi; Sato, Satoshi; Tada, Eisuke
JAERI-M 93-141, 75 Pages, 1993/07
no abstracts in English
Sato, Satoshi; *; Seki, Yasushi; Takatsu, Hideyuki; Mori, Seiji*; Kuroda, Toshimasa*; S.Zimin*
JAERI-M 93-093, 29 Pages, 1993/03
no abstracts in English
Sato, Satoshi; *; Seki, Yasushi; Takatsu, Hideyuki; Kuroda, Toshimasa*; S.Zimin*
JAERI-M 92-093, 53 Pages, 1992/07
no abstracts in English
S.Zimin*; Sato, Satoshi; *; Takatsu, Hideyuki; Kuroda, Toshimasa*; Seki, Yasushi
JAERI-M 92-063, 45 Pages, 1992/05
no abstracts in English
Kuroda, Toshimasa*; Yoshida, Hiroshi; Takatsu, Hideyuki; Seki, Yasushi; Noda, Kenji; Watanabe, H.; Koizumi, Koichi; Nishio, Satoshi; *; *; et al.
JAERI-M 91-133, 191 Pages, 1991/08
no abstracts in English
; ; Mizoguchi, Tadanori*; *; *; *; Watanabe, Takashi*; Mori, Seiji*; Adachi, Junichi*; *; et al.
JAERI-M 87-139, 355 Pages, 1987/09
no abstracts in English
