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Ma, B.*; Teshigawara, Makoto; Wakabayashi, Yasuo*; Yan, M.*; Hashiguchi, Takao*; Yamagata, Yutaka*; Wang, S.*; Ikeda, Yujiro*; Otake, Yoshie*
Nuclear Instruments and Methods in Physics Research A, 995, p.165079_1 - 165079_7, 2021/04
Times Cited Count：2 Percentile：33.7(Instruments & Instrumentation)We have optimized a cold neutron moderator to be operated at the RIKEN accelerator-driven compact neutron source. We selected a safe and easy to manage material, mesitylene, as the RANS cold moderator. An efficient moderator system was designed by studying and optimizing a coupled cold neutron moderator of mesitylene at 20 K with a polyethylene (PE) pre-moderator at room temperature in the slab geometry with Particle and Heavy Ion Transport code System (PHITS) simulations. The parameters of mesitylene and PE thickness, the reflector, and the shielding configuration were studied to increase cold neutron intensities. Consequently, an integrated cold neutron intensity of 1.15
10
n/cm
/
A at 2 m from the neutron-producing target was finally achieved, which was 12 times higher than that of the current PE moderator. The results showed attractive application prospect of mesitylene as cold neutron moderator material.
rays-irradiationKawahara, Yutaka*; Sekiguchi, Takahiro*; Nishikawa, Yukihiro*; Nagasawa, Naotsugu
Nihon Shiruku Gakkai-Shi, 23, p.67 - 69, 2015/03
Silk aerogel has been prepared from liquid silk, and the influences of the ray-irradiation on its mechanical property have been investigated. The formation of crosslinking structure in the sericin component by the ray-irradiation should induced the hardening of the silk aerogel.
raysKawahara, Yutaka*; Washika, Shingo*; Ikeda, Yoshimitsu*; Nagasawa, Naotsugu
Nihon Shiruku Gakkai-Shi, 21, p.11 - 13, 2013/00
Silk fibroin fabrics were irradiated with rays of 25 kGy doses, and the changes in their tensile properties and hue were investigated. Both the breaking tensile strength of the fabrics and their elongation at break were decreased after the irradiation, accompanied by their yellowing. However, the values of their tensile properties after the irradiation has been retained more than 90% of those without the irradiation. The degree of crystallinity was almost unchanged even after the irradiation.
Muramatsu, Yasuyuki; Okawara, Masami; Suzuki, Toshiyuki; Shibata, Isao; Fuketa, Toyoshi
JAEA-Technology 2007-028, 47 Pages, 2007/03
JAEA-Technology-2007-028.pdf:4.76MB
As a part of Advanced LWR Fuel Performance and Safety Research Program, irradiation experiments are conducted with high burnup uranium dioxide fuel and uranium-plutonium mixed oxide (MOX) fuel in the Nuclear Safety Research Reactor. When an irradiation capsule is transferred and loaded to the reactor core, a capsule loader is used. The previous capsule loader, however, could not have enough shielding capability against neutron flux from high burnup MOX fuel. In order to fulfill the requirement and to handle a new high pressure water capsule, accordingly, a type-B capsule loader was developed.
Nakamura, Takehiko; Ikeda, Yoshikazu; Yachi, Shigeyasu; Ogawara, Masami; Yoshinaga, Makio; Takariko, Isao; Toyokawa, Shunji; Katanishi, Shoji; Sobajima, Makoto
JAERI-Tech 2000-019, p.162 - 0, 2000/03
JAERI-Tech-2000-019.pdf:6.02MB
no abstracts in English
Yamada, Yasusada*; Watanabe, Noboru*; Niimura, Nobuo; Morii, Yukio; Katano, Susumu; Aizawa, Kazuya; Suzuki, Junichi; Koizumi, Satoshi; Osakabe, Toyotaka; Teshigawara, Makoto*; et al.
Physica B; Condensed Matter, 241-243, p.42 - 45, 1998/00
Times Cited Count：4 Percentile：33.02(Physics, Condensed Matter)no abstracts in English
Sn neutron resonance parametersNakajima, Yutaka; Okubo, Makio; *; Mizumoto, Motoharu; Sugimoto, Masayoshi; Kawarasaki, Yuki
Annals of Nuclear Energy, 17(2), p.95 - 99, 1990/00
Times Cited Count：1 Percentile：19.59(Nuclear Science & Technology)no abstracts in English
CsNakajima, Yutaka; Okubo, Makio; Sugimoto, Masayoshi; Mizumoto, Motoharu; Kawarasaki, Yuki
Annals of Nuclear Energy, 17(10), p.569 - 577, 1990/00
Times Cited Count：3 Percentile：40.32(Nuclear Science & Technology)no abstracts in English
Gd and 
Gd from 1.1 to 235 keVNakajima, Yutaka; *; Mizumoto, Motoharu; *; ; Sugimoto, Masayoshi; Kawarasaki, Yuki
Annals of Nuclear Energy, 16(11), p.589 - 597, 1989/00
Times Cited Count：8 Percentile：67.25(Nuclear Science & Technology)no abstracts in English
La below 2.5keV; *; *; ; ; ; *
Journal of Nuclear Science and Technology, 20(3), p.183 - 190, 1983/00
Times Cited Count：6 Percentile：60.91(Nuclear Science & Technology)no abstracts in English
Ag and Ag; ; ; ; ;
Journal of Nuclear Science and Technology, 20(11), p.883 - 892, 1983/00
Times Cited Count：0 Percentile：0.02(Nuclear Science & Technology)no abstracts in English
*; ; ; ;
Nihon Genshiryoku Gakkai-Shi, 23(9), p.624 - 631, 1981/00
Times Cited Count：0 Percentile：0.02(Nuclear Science & Technology)no abstracts in English
Eu and Eu from 3 to 100keV; ; ; ; Fuketa, Toyojiro;
Journal of Nuclear Science and Technology, 16(10), p.711 - 719, 1979/10
Times Cited Count：11no abstracts in English
; Fuketa, Toyojiro; ; ; ; ; ;
JAERI 1138, 27 Pages, 1967/08
no abstracts in English
Fuketa, Toyojiro; ; ; ; ;
Proc.Conf.on Nuclear Data for Reactors, p.181 - 186, 1966/10
no abstracts in English
Sugiyama, Tomoyuki; Tomiyasu, Kunihiko; Sasajima, Hideo; Umeda, Miki; Nagase, Fumihisa; Fuketa, Toyoshi; Okawara, Masami; Honda, Junichi
no journal, ,
no abstracts in English
Fuketa, Toyoshi; Nagase, Fumihisa; Sugiyama, Tomoyuki; Nishino, Yasuharu; Okawara, Masami
no journal, ,
no abstracts in English
rays irradiationKawahara, Yutaka*; Washika, Shingo*; Ikeda, Yoshimitsu*; Nagasawa, Naotsugu
no journal, ,
no abstracts in English
Kaneko, Koji; Ohara, Takashi; Kiyanagi, Ryoji; Kawasaki, Takuro; Oikawa, Kenichi; Tamura, Itaru; Yamauchi, Yasuhiro; Hanashima, Takayasu*; Moyoshi, Taketo*; Nakao, Akiko*; et al.
no journal, ,
Kaneko, Koji; Osakabe, Toyotaka; Shimojo, Yutaka; Yamauchi, Hiroki; Moriai, Atsushi; Asami, Toshio*; Kawana, Daichi*; Sugiura, Ryosuke*; Okawara, Manabu*
no journal, ,
