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Naito, Fujio*; Anami, Shozo*; Ikegami, Kiyoshi*; Uota, Masahiko*; Ouchi, Toshikatsu*; Onishi, Takahiro*; Oba, Toshiyuki*; Obina, Takashi*; Kawamura, Masato*; Kumada, Hiroaki*; et al.
Proceedings of 13th Annual Meeting of Particle Accelerator Society of Japan (Internet), p.1244 - 1246, 2016/11
The proton linac installed in the Ibaraki Neutron Medical Research Center is used for production of the intense neutron flux for the Boron Neutron Capture Therapy (BNCT). The linac consists of the 3-MeV RFQ and the 8-MeV DTL. Design average beam current is 10mA. Target is made of Beryllium. First neutron production from the Beryllium target was observed at the end of 2015 with the low intensity beam as a demonstration. After the observation of neutron production, a lot of improvement s was carried out in order to increase the proton beam intensity for the real beam commissioning. The beam commissioning has been started on May 2016. The status of the commissioning is summarized in this report.
O
Kirishima, Akira*; Mitsugashira, Toshiaki*; Onishi, Takashi; Sato, Nobuaki*
Journal of Nuclear Science and Technology, 48(6), p.958 - 966, 2011/06
Times Cited Count：3 Percentile：24.97(Nuclear Science & Technology)A novel reprocessing process based on the selective sulfurization of fission products (FP) has been proposed, where FP and minor actinides (MA) are first sulfurized by CS
gas, and then, dissolved by a dilute nitric acid solution. Consequently, the fuel elements are recovered as UO and PuO. As a basic research of this new concept, the sulfurization and dissolution behaviors of U, Pu, Np, Am, Eu, Cs and Sr were investigated in this paper using 
Pu, 
Np, 
Am, 
Eu, 
Cs and 
Sr doped UO sample by 
ray and 
spectrometries. The dependence of the dissolution ratio of each element on the sulfurization temperature was studied and reasonably explained by combining the information of the sulfide phase analysis and the chemical thermodynamics of the dissolution reaction. The sulfurization temperature ranging from 350 to 450 
C seems to be promising for the separation of FP and MA from U and Pu.
Rintsu, Yuko*; Serizawa, Shigeru*; Yamazaki, Tetsuo*; Umeyama, Nobuaki*; Moriuchi, Shigeru*; Handa, Hiroyuki*; Onishi, Ryoichi*; Takemura, Morio*; Chino, Masamichi; Nagai, Haruyasu; et al.
Proceedings of 16th Pacific Basin Nuclear Conference (PBNC-16) (CD-ROM), 6 Pages, 2008/10
no abstracts in English
nucleus 
CrOnishi, Takeo*; Gelberg, A.*; Sakurai, Hiroyoshi*; Yoneda, Kenichiro*; Aoi, Nori*; Imai, Nobuaki*; Baba, Hidetada*; Von Brentano, P.*; Fukuda, Naoki*; Ichikawa, Yuichi*; et al.
Physical Review C, 72(2), p.024308_1 - 024308_7, 2005/08
Times Cited Count：22 Percentile：78.19(Physics, Nuclear)no abstracts in English
Onishi, Nobuaki
Dekomisshoningu Giho, 0(12), p.11 - 21, 1995/07
no abstracts in English
Onishi, Nobuaki; Shirai, Eiji
Proc. of the 9th Pacific Basin Nuclear Conf., Vol. 2, p.1071 - 1076, 1994/00
no abstracts in English
; Suzuki, Masatoshi; Tsuruno, Akira; Onishi, Nobuaki
Physica B; Condensed Matter, 180-181, p.987 - 990, 1992/00
Times Cited Count：8 Percentile：43.20(Physics, Condensed Matter)no abstracts in English
; Suzuki, Masatoshi; Takahashi, Hidetake; Onishi, Nobuaki; ; ; ;
Journal of Nuclear Science and Technology, 27(12), p.1138 - 1146, 1990/12
no abstracts in English
Onishi, Nobuaki; Takahashi, Hidetake; Takayanagi, Masaji; Ichikawa, Hiroki; Kawasaki, Minoru
Nihon Genshiryoku Gakkai-Shi, 32(10), p.962 - 969, 1990/10
Times Cited Count：4 Percentile：46.87(Nuclear Science & Technology)no abstracts in English
Suzuki, Masatoshi; ; ; ; Onishi, Nobuaki; Takahashi, Hidetake; ; ; ; ; et al.
JAERI-M 90-079, 44 Pages, 1990/05
no abstracts in English
; Suzuki, Masatoshi; ; Harami, Taikan; Takahashi, Hidetake; Onishi, Nobuaki
Journal of Nuclear Science and Technology, 27(5), p.406 - 415, 1990/05
no abstracts in English
Matsumoto, Kiyoshi; Kosaka, Atsuo; Kaminaga, Masanori; Murayama, Yoji; Onishi, Nobuaki;
JAERI-M 90-055, 232 Pages, 1990/03
no abstracts in English
; ; Onishi, Nobuaki
JAERI-M 89-120, 48 Pages, 1989/09
no abstracts in English
Enokido, Yuji*; ; ; Onishi, Nobuaki; ; Shiozawa, Shusaku
Nihon Genshiryoku Gakkai-Shi, 31(7), p.742 - 772, 1989/07
no abstracts in English
Soyama, Kazuhiko; Onishi, Nobuaki
JAERI-M 88-112, 33 Pages, 1988/06
no abstracts in English
Kaminaga, Masanori; Murayama, Yoji; Onishi, Nobuaki
JAERI-M 88-001, 36 Pages, 1988/01
no abstracts in English
Onishi, Nobuaki; Isshiki, Masahiko; Takahashi, Hidetake;
Japan-China Symp. on Research and Test Reactors, 11 Pages, 1988/00
no abstracts in English
Onishi, Nobuaki
Nihon Genshiryoku Gakkai-Shi, 29(7), p.593 - 602, 1987/07
Times Cited Count：0 Percentile：0.00(Nuclear Science & Technology)no abstracts in English
Onishi, Nobuaki; ; ; Sakurai, Hiroshi
CONF-871018-Vol.2, p.6-95 - 6-105, 1987/00
no abstracts in English
Onishi, Nobuaki; Inabe, Teruo
Journal of Nuclear Science and Technology, 19(7), p.528 - 542, 1982/00
Times Cited Count：10 Percentile：70.90(Nuclear Science & Technology)no abstracts in English
Onishi, Takashi; Osaka, Masahiko; Miwa, Shuhei; Obayashi, Hiroshi; Sekino, Hirotaka*; Kirishima, Akira*; Sato, Nobuaki*
no journal, ,
As a demonstration of nuclear fuel reprocessing by sulfurization reaction, voloxidation, selective sulfurization and selective dissolution of simulated spent nuclear fuel pellet fabricated from U, Pu, Am and non-radioactive FP were conducted. As results, dissolution rate of each elements were obtained and behavior of MA and FP were investigated.
