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Chimi, Yasuhiro; Iwase, Akihiro*; Ishikawa, Norito; Kobiyama, Mamoru*; Inami, Takashi*; Kambara, Tadashi*; Okuda, Shigeo*
Nuclear Instruments and Methods in Physics Research B, 245(1), p.171 - 175, 2006/04
Times Cited Count：17 Percentile：73.16(Instruments & Instrumentation)We have studied effects of irradiation with energetic particles on defect accumulation in nanocrystalline gold (nano-Au). The specimens of nano-Au foil (3-5 
m thickness) with various grain sizes (23-156 nm) are prepared by the gas deposition method and subsequent thermal annealings. Irradiations of the specimens with 60-MeV 
C ions, 3.54-GeV 
Xe ions or 2.0-MeV electrons are performed at low temperature. The defect accumulation behavior is observed by measuring the electrical resistivity change during irradiation. Through an analysis of defect accumulation behavior, cross-sections for defect production, 
, and annihilation, 
, in nano-Au increase monotonically as the grain size decreases. These results are considered to be caused by the existence of a large volume fraction of the regions near grain boundaries in nano-Au where the threshold energy for atomic displacements, E, becomes lower than in polycrystalline gold. The possibility of electronic excitation effects in nano-Au is also discussed.
Ishino, Masahiko; Yoda, Osamu; Haishi, Yasuyuki*; Arimoto, Fumiko*; Takeda, Mitsuhiro*; Watanabe, Seiichi*; Onuki, Somei*; Abe, Hiroaki
Japanese Journal of Applied Physics, Part 1, 41(5A), p.3052 - 3056, 2002/05
Times Cited Count：12 Percentile：45.31(Physics, Applied)no abstracts in English
Arai, Yasuo; ; Omichi, Toshihiko
Journal of Nuclear Materials, 202, p.70 - 78, 1993/00
Times Cited Count：33 Percentile：92.22(Materials Science, Multidisciplinary)no abstracts in English
coated particle fuelAkabori, Mitsuo; Fukuda, Kosaku
Journal of Nuclear Materials, 183, p.70 - 75, 1991/00
Times Cited Count：5 Percentile：53.46(Materials Science, Multidisciplinary)no abstracts in English
microspheres;
Journal of Nuclear Materials, 144(3), p.244 - 251, 1987/03
Times Cited Count：8 Percentile：63.00(Materials Science, Multidisciplinary)no abstracts in English
fuel kernels irradiated by fission fragments; Akabori, Mitsuo; Shiba, Koreyuki
Funtai Oyobi Fummatsu Yakin, 30(5), p.178 - 183, 1983/00
no abstracts in English
fuel kernels irradiated by fission fragments; Akabori, Mitsuo; Shiba, Koreyuki
Funtai Oyobi Fummatsu Yakin, 29(5), p.187 - 190, 1982/00
no abstracts in English
Be thermal scattering law data considering crystallite size, 2; Effect on nuclear properties of A-FNS test modulesKwon, Saerom*; Konno, Chikara; Ota, Masayuki*; Sato, Satoshi*
no journal, ,
The analyses of the beryllium benchmark experiment at JAEA/FNS and the test modules of a fusion neutron source A-FNS were performed with the thermal scattering law data of Be considering the crystallite size of beryllium produced by the European Spallation Source group. It was concluded that the overestimation of the calculated reaction rates sensitive to low energy neutrons in the beryllium benchmark experiment at JAEA/FNS decreased with increasing the crystallite size of beryllium. The effect of the Be thermal scattering law data appeared for neutron flux below 0.1 eV in the test modules of A-FNS but the effect on tritium production rate, etc. was small because the neutron flux below 0.1 eV was small.
Kwon, Saerom*; Konno, Chikara; Honda, Shogo*; Kenjo, Shunsuke*; Ochiai, Kentaro*; Sato, Satoshi*
no journal, ,
Nuclear data determine accuracy of nuclear analyses for a fusion neutron A-FNS. We analyzed JAEA/FNS beryllium experiment with the latest nuclear data libraries and clarified effects of different secondary neutron spectra of Be-9 among the nuclear data libraries and those of reaction rates sensitive to low energy neutrons due to Be-9 thermal neutron scattering law data with different crystallite domain sizes. This study will lead to accurate nuclear analyses, which contributes to engineering designs for A-FNS.
