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Kurihara, Kazuo; Tanaka, Ichiro*; Niimura, Nobuo
Nihon Kessho Gakkai-Shi, 46(3), p.193 - 200, 2004/05
Neutron diffraction provides an experimental method of directly locating hydrogen atoms in proteins and nucleic acids, and the development of the neutron imaging plate (NIP) became a breakthrough event in neutron protein crystallography. A high-resolution neutron diffractometers dedicated to biological macromolecules (BIX-3, BIX-4) with the NIP have been constructed at Japan Atomic Energy Research Institute. The detailed structure of the diffractometer and the systematic procedure of the neutron diffraction experiment from the crystallization of a large single crystal to the data collection and the data processing, and the future prospect of the neutron diffractometry in proteins will be presented.
Okuno, Hiroshi; Takada, Tomoyuki
Journal of Nuclear Science and Technology, 41(4), p.481 - 492, 2004/04
Times Cited Count：0 Percentile：0.01(Nuclear Science & Technology)Nuclear characteristic parameters were calculated and subcriticality judgement graphs were drawn for revision purposes of the Data Collection for the Nuclear Criticality Safety Handbook. The nuclear characteristic parameters were the neutron multiplication factor in infinite media, migration area and diffusion constants for 11 kinds of typical fuels encountered in criticality safety evaluation of nuclear fuel cycle facilities. These fuels included ADU-H
O, UF6-HF and Pu(NO
)
-UO(NO) solution, of which data were not cited in the Data Collection. The calculation was made with the Japanese evaluated nuclear data library JENDL-3.2 and a sequence of criticality calculation codes, SRAC, POST and SIMCRI. The subcriticality judgement graphs that depict the region satisfying the inequality relation of the neutron multiplication factor less than 0.98 between the two variables (a) uranium enrichment, 239Pu/Pu ratio or plutonium enrichment and (b) H/(Pu+U) ratio were drawn for the same kinds of fuels except UF6-HF in infinite media.
Okuno, Hiroshi; Ryufuku, Susumu*; Suyama, Kenya; Nomura, Yasushi; Tonoike, Kotaro; Miyoshi, Yoshinori
JAERI-Conf 2003-019, p.116 - 121, 2003/10
This paper outlines the data prepared for the 2nd version of Data Collection of the Nuclear Criticality Safety Handbook. These data are discussed in the order of its preliminary table of contents. The nuclear characteristic parameters (k
, M
, D) were derived, and subcriticality judgment graphs were drawn for eleven kinds of fuels which were often encountered in criticality safety evaluation of fuel cycle facilities. For calculation of criticality data, benchmark calculations using the combination of the continuous energy Monte Carlo criticality code MVP and the Japanese Evaluated Nuclear Data Library JENDL-3.2 were made. The calculation errors were evaluated for this combination. The implementation of the experimental results obtained by using NUCEF facilities into the 2nd version of the Data Collection is under discussion. Therefore, related data were just mentioned. A database is being prepared to retrieve revised data easily.
Okuno, Hiroshi; Nomura, Yasushi
Proceedings of the 2001 Topical Meeting on Practical Implementation of Nuclear Criticality Safety (CD-ROM), 8 Pages, 2001/11
The nuclear criticality safety handbook of Japan was first published in 1988, which was translated into English in 1995. This paper intends to introduce the American community of nuclear criticality safety to activities for revising the Japanese handbook, putting an emphasis on practical use of code validation. They include (1) publication of "Nuclear Criticality Safety Handbook, Version 2" and its English translation, (2) publication of "A Guide Introducing Burnup Credit, Preliminary Version," and (3) preparation of "Nuclear Criticality Safety Handbook, -Data Collection-, Version 2."
Maekawa, Fujio; Konno, Chikara; Kasugai, Yoshimi; Oyama, Yukio; Ikeda, Yujiro
JAERI-Data/Code 98-021, 93 Pages, 1998/08
JAERI-Data-Code-98-021.pdf:4.43MB
no abstracts in English
Yanagihara, Satoshi; ; Tachibana, Mitsuo; Sukegawa, Takenori
Doryoku, Enerugi Gijutsu No Saizensen : Doryoku, Enerugi Gijutsu Shimpojiumu Koen Rombunshu 1996, 0, p.364 - 367, 1996/00
no abstracts in English
Yanagihara, Satoshi; Tachibana, Mitsuo; ;
Proc., The 1994 Int. Symp. on Decontamination & Decommissioning, 0, 6 Pages, 1994/00
no abstracts in English
Narui, Shigeko; Habara, Tadashi; Izawa, Michiyo; Naramoto, Miyoko; Kajiro, Tadashi
Joho Kagaku Gijutsu Kenkyu Shukai Happyo Rombunshu, 20, p.117 - 125, 1983/00
no abstracts in English
;
Nihon Genshiryoku Gakkai-Shi, 25(12), p.993 - 1003, 1983/00
no abstracts in English
*;
JAERI-M 82-191, 72 Pages, 1982/12
no abstracts in English
; Habara, Tadashi; Izawa, Michiyo; Naramoto, Miyoko; Kajiro, Tadashi
Joho Kagaku Gijutsu Kenkyu Shukai Happyo Rombunshu, 19, p.72 - 80, 1982/00
no abstracts in English
