Výsledky vyhledávání - "Naohiro HIRAKAWA"

Improvement of reactivity coefficients of metallic fuel LMFBR by adding moderating material

Autor: Naohiro Hirakawa, K Tsujimoto, Toshitaka Osugi, Masaki Andoh, Tomohiko Iwasaki, Shigeaki Okajima

Publikováno v: Annals of Nuclear Energy. 28:831-855

For a metallic fuel liquid metal fast breeder reactor, we studied a core concept for improving the Doppler coefficient and the sodium void reactivity without much sacrificing the breeding ratio and the burnup reactivity loss. In the concept, several

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b9a37d6b0cc97408706f241c21424ff
https://doi.org/10.1016/s0306-4549(00)00094-3

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[Untitled]

Autor: Naohiro HIRAKAWA, Tomohiko IWASAKI

Publikováno v: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan. 43:367-374

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e9d3ef9c1f4cc7f3444784c8d7ceb362
https://doi.org/10.3327/jaesj.43.367

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Autor: Naohiro HIRAKAWA, Tomohiko IWASAKI

Publikováno v: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan. 43:20-27

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99b2733f0a06218d03ae70dd01a14e14
https://doi.org/10.3327/jaesj.43.20

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[Untitled]

Autor: Naohiro HIRAKAWA, Tomohiko IWASAKI

Publikováno v: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan. 43:114-122

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::72c98abfd52c5a300d2b03815772dada
https://doi.org/10.3327/jaesj.43.114

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Measurements of Elastic Scattering Cross Sections of Carbon, Silicon, Iron, Zirconium and Lead for 75 MeV Neutrons

Autor: Y. Hirasawa, Takako Miura, Hiroshi Nakashima, Shin-ichiro Meigo, Osamu Iwamoto, Naohiro Hirakawa, Masanobu Ibaraki, Susumu Tanaka, Mamoru Baba, Yasushi Nauchi

Publikováno v: Journal of Nuclear Science and Technology. 37:683-686

We performed measurements of neutron elastic scattering cross sections of carbon, silicon, iron, zirconium and lead at 75 MeV using a7Li(p,n) quasi-monoenergetic neutron source at TIARA of JAERI. Neutron spectra at 25 laboratory angles between 2.6°a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e716ad5ace32afa1cc18c4757d319f20
https://doi.org/10.1080/00223131.2000.10874976

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An Analysis of Transient Behavior of a Metallic Fuel FBR during Initiating Phase of Core Disruptive Accident

Autor: Naohiro Hirakawa, Go Hirano, Tomohiko Iwasaki

Publikováno v: Journal of Nuclear Science and Technology. 37:237-243

The transient behavior during an initiating phase of CDA (core disruptive accident), was analyzed for a metallic fuel reactor, which is expected to realize high breeding ratio and low fuel cycle cost. In the present study, SAS3D code was modified for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7574c4697ede808977365947c0d38b21
https://doi.org/10.1080/18811248.2000.9714889

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(n,α) Cross-section measurement using a gaseous sample and a gridded ionization chamber

Autor: Keiichiro Saito, Toshiya Sanami, Naohiro Hirakawa, Mamoru Baba

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 440:403-408

We developed a method of (n, α) cross-section measurement using a gaseous sample in a gridded ionization chamber (GIC). This method enables us to measure the cross section of gaseous samples, such as C, O and N, with very large solid angle close to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2fc63e4660de4f57b18d6dceaef1ddb0
https://doi.org/10.1016/s0168-9002(99)00945-6

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