Zobrazeno 1 - 10 of 59 pro vyhledávání: '"Shigeaki Okajima"'
2
Analyses with latest major nuclear data libraries of the fission rate ratios for several TRU nuclides in the FCA-IX experiments
Autor: Shigeaki Okajima, Kazufumi Tsujimoto, Masahiro Fukushima
Publikováno v: Journal of Nuclear Science and Technology. 54:795-805
In the 1980s, a series of integral experiments was conducted in FCA-IX assemblies with systematically changed neutron spectra covering from the intermediate to fast ones. The experiments provide systematic data of central fission rates for TRU nuclid
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f78ca224422915aef5d6b4a1ce28d44
https://doi.org/10.1080/00223131.2017.1299644
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3
Benchmark models for criticalities of FCA-IX assemblies with systematically changed neutron spectra
Autor: Shigeaki Okajima, Teruhiko Kugo, Masahiro Fukushima, Yasunori Kitamura
Publikováno v: Journal of Nuclear Science and Technology. 53:406-424
New benchmark models with respect to criticality data are established on the basis of seven uranium-fueled assemblies constructed in the ninth experimental series at the fast critical assembly (FCA...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::239c5c220665d316a4255e6b9d8df518
https://doi.org/10.1080/00223131.2015.1054911
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5
Void reactivity evaluation by modified conversion ratio measurements in LWR critical experiments
Autor: Mitsuaki Yamaoka, Toshikazu Takeda, Takanori Kitada, Masahiro Fukushima, Shigeaki Okajima, Kumanomido Hironori, Takamasa Mori, Tsukasa Kikuchi, Ishi Mitsuhashi, Yasunobu Nagaya, Kenichi Yoshioka, Gunji Satoshi, Takuya Umano
Publikováno v: Journal of Nuclear Science and Technology. 52:282-293
We have developed a void reactivity evaluation method by using modified conversion ratio measurements in a light water reactor (LWR) critical lattice. Assembly-wise void reactivity is evaluated fro...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38af3d193828b7d0da104550f68dcab5
https://doi.org/10.1080/00223131.2014.937781
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6
Development of a calculation system for the estimation of decontamination effects
Autor: Yukio Sakamoto, Kensuke Kojima, Hiroki Iwamoto, Teruhiko Kugo, Shigeaki Okajima, Daiki Satoh, Norihiro Matsuda, Akito Oizumi, Akira Endo
Publikováno v: Journal of Nuclear Science and Technology. 51:656-670
A calculation system for the estimation of decontamination effects (CDE) is developed in the present work to aid in the effective planning of decontamination procedures. This system calculates dose...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1ad06eeda20a8780996098d792f26fe
https://doi.org/10.1080/00223131.2014.886534
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7
Intra-pellet neutron flux distribution measurements in LWR critical lattices
Autor: Masahiro Fukushima, Mitsuaki Yamaoka, Takanori Kitada, Tsukasa Kikuchi, Shigeaki Okajima, Takamasa Mori, Yasunobu Nagaya, Kumanomido Hironori, Ishi Mitsuhashi, Toshikazu Takeda, Gunji Satoshi, Takuya Umano, Kenichi Yoshioka
Publikováno v: Journal of Nuclear Science and Technology. 50:606-614
We have developed inexpensive and easy-handling measurement methods on intra-pellet neutron flux. A foil activation method with metallic foils, which were fabricated by punching out technique and etching technique to reduce fabrication error and posi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6800936134e783f70d2280a70e3dbdae
https://doi.org/10.1080/00223131.2013.785270
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8
Fission Rate Ratios of FCA-IX Assemblies as Integral Experiment for Assessment of TRU’s Fission Cross Sections
Autor: Kazufumi Tsujimoto, Shigeaki Okajima, Masahiro Fukushima
Publikováno v: EPJ Web of Conferences, Vol 111, p 07002 (2016)
At the fast critical assembly (FCA) of JAEA, central fission rate ratios for TRU such as 237 Np, 238 Pu, 239 Pu, 242 Pu, 241 Am, 243 Am, and 244 Cm were measured in the seven uraniumfueled assemblies (FCA-IX assemblies) with systematically changed ne
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e01244fa299912db30c9c9580c6e44c
https://doaj.org/article/d9e43cd1cd934d68bc7f92658ece4ad7
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9
Benchmark Calculations of Sodium-Void Experiments with Uranium Fuels at the Fast Critical Assembly FCA
Autor: Masahiro FUKUSHIMA, Yasunori KITAMURA, Teruhiko KUGO, Tsuyoshi YAMANE, Masaki ANDOH, Go CHIBA, Makoto ISHIKAWA, Shigeaki OKAJIMA
Publikováno v: Progress in Nuclear Science and Technology. 2:306-311
The benchmark specification for the sodium-void reactivity experiments is given. The detailed benchmark calcu- lations for the new integral data were performed by using a continuous-energy Monte Carlo code (MVP) with use of the evaluated nuclear data
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c8bcdabaca20de1a69ca040bd3ff3db
https://doi.org/10.15669/pnst.2.306
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10
JENDL-4.0 Integral Testing for Fission Systems
Autor: Kenji Yokoyama, Makoto Ishikawa, Go Chiba, Kazuteru Sugino, Shigeaki Okajima, Teruhiko Kugo, Yasunobu Nagaya, Keisuke Okumura
Publikováno v: Journal of the Korean Physical Society. 59:1135-1140
Benchmark testing for the newly developed Japanese evaluated nuclear data library JENDL-4.0 is carried out by using a huge amount of the integral data. Benchmark calculations are performed with the continuous-energy Monte Carlo code with a large numb
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ed7479461adb2173d195079e2a40d82
https://doi.org/10.3938/jkps.59.1135
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