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Oikawa, Kenichi; Maekawa, Fujio; Harada, Masahide; Kai, Tetsuya; Sakai, Kenji; Meigo, Shinichiro; Kasugai, Yoshimi; Teshigawara, Makoto; Oi, Motoki; Kato, Takashi; et al.
no journal, ,
no abstracts in English
Maruyama, Ryuji; Yamazaki, Dai; Ebisawa, Toru*; Hino, Masahiro*; Soyama, Kazuhiko
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The development of high performance neutron supermirrors with high reflectivity and large 
, the ratio of the effective critical angle of the supermirror to that of natural nickel, is important for the J-PARC project since it greatly increases the available neutron intensity. Neutron supermirrors consist of alternating layers of two materials with different refractive indices for neutrons. An ion beam sputtering instrument with an effective deposition area of 0.2 m
has been installed at the Japan Atomic Energy Agency in order to produce neutron guides, benders, and other neutron optical devices, which are planned for application in the J-PARC project. We have succeeded in fabricating the supermirror with large critical angle of 
and that with high reflectivity (
85%) for 
.
Oi, Motoki; Sakai, Kenji; Kaminaga, Masanori; Kato, Takashi
no journal, ,
At the pulsed neutron source such as JSNS and SNS, liquid hydrogen moderators are used as cold moderator. Neutronic performance of the liquid hydrogen moderator changes depending on the hydrogen temperature and ortho/para concentration. Especially, pulse width and decay time are important for the resolution of neutron scattering experiment. To resolve these problems, I propose the pulsed neutron source monitoring system. The system monitors the neutron spectrum, proton beam current, and other facility information. Then automatically analyze and estimate real time moderator status. And more, with the long term operation, the system would be show the burn up of decoupler and poison in the moderator.
Sakai, Kenji; Kinoshita, Hidetaka; Kai, Tetsuya; Oi, Motoki; Hoshino, Yoshihiro; Kaminaga, Masanori; Kato, Takashi
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Takahashi, Nobuaki; Shibata, Kaoru; Sato, Taku*; Arai, Masatoshi; Mezei, F.*
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Maekawa, Fujio
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Tamada, Taro
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Kai, Tetsuya; Harada, Masahide; Teshigawara, Makoto; Kiyanagi, Yoshiaki*; Watanabe, Noboru*
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Takeda, Masayasu; Kakurai, Kazuhisa; Mibu, Ko*
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no abstracts in English
Si-enriched thin film for local neutron transmutation dopingYamada, Yoichi; Yamamoto, Hiroyuki; Oba, Hironori; Sasase, Masato*; Esaka, Fumitaka; Yamaguchi, Kenji; Udono, Haruhiko*; Shamoto, Shinichi; Yokoyama, Atsushi; Hojo, Kiichi
no journal, ,
Si in natural Si has been widely used for a doping source, since Si can be transmuted into 
P by thermal neutron (Neutron Transmutation Doping, NTD). In the present study, Si-enriched thin film has been fabricated in order to demonstrate the local NTD. The Si-enriched film with thickness of 100 nm was deposited on the Si(100) substrate by plasma enhanced chemical vapor deposition using Si-enriched SiF
as the source gases. Nanostructure of films and changes of electronic properties by the neutron irradiation will be discussed.
Ohara, Takashi; Kurihara, Kazuo; Kusaka, Katsuhiro; Hosoya, Takaaki; Tanaka, Ichiro*; Niimura, Nobuo*; Ozeki, Tomoji*; Aizawa, Kazuya; Morii, Yukio; Arai, Masatoshi; et al.
no journal, ,
no abstracts in English
Nakagawa, Hiroshi; Jochi, Yasumasa*; Kitao, Akio*; Shibata, Kaoru; Go, Nobuhiro; Kataoka, Mikio
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no abstracts in English
Kurihara, Kazuo; Tamada, Taro; Ohara, Takashi; Kuroki, Ryota
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Matsuda, Masaaki
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N
measured by polarized neutronsIshii, Yuya; Oitani, Seiki; Takeda, Masayasu; Kakurai, Kazuhisa; Kikuchi, Takayuki; Oku, Takayuki; Shinohara, Takenao; Suzuki, Junichi; Sasaki, Yuji*; Kishimoto, Mikio*; et al.
no journal, ,
no abstracts in English
-Fe and CoFe powder by polarized neutron diffractionOitani, Seiki; Ishii, Yuya; Takeda, Masayasu; Kakurai, Kazuhisa; Kikuchi, Takayuki; Oku, Takayuki; Shinohara, Takenao; Suzuki, Junichi; Yokoyama, Makoto*; Nishihara, Yoshikazu*; et al.
no journal, ,
no abstracts in English
Asaoka, Hidehito; Takeda, Masayasu; Yamazaki, Dai; Yamazaki, Tatsuya; Taguchi, Tomitsugu; Shamoto, Shinichi; Torikai, Naoya*
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Sb
Kaneko, Koji; Metoki, Naoto; Kimura, Hiroyuki*; Noda, Yukio*; Matsuda, Tatsuma; Kogi, Masafumi*
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Ishigaki, Toru; Hoshikawa, Akinori; Yonemura, Masao*; Kamiyama, Takashi*; Mori, Kazuhiro*; Mochiku, Takashi*; Aizawa, Kazuya; Arai, Masatoshi; Ebata, Kazuhiro*; Takano, Yoshiki*; et al.
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Metoki, Naoto; Kaneko, Koji
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no abstracts in English