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JAEA Reports

Evaluation for the models of neutron diffusion theory in terms of power density distributions of the HTTR

Takamatsu, Kuniyoshi; Shimakawa, Satoshi; Nojiri, Naoki; Fujimoto, Nozomu

JAERI-Tech 2003-081, 49 Pages, 2003/10

JAERI-Tech-2003-081.pdf:2.6MB

In the case of evaluations for the highest temperature of the fuels in the HTTR, it is very important to expect the power density distributions accurately; therefore, it is necessary to improve the analytical model with the neutron diffusion and the burn-up theory. The power density distributions are analyzed in terms of two models, the one mixing the fuels and the burnable poisons homogeneously and the other modeling them heterogeneously. Moreover these analytical power density distributions are compared wtih the ones derived from the gross $$gamma$$-ray measurements and the Monte Carlo calculational code with continuous energy. As a result the homogeneous mixed model isn't enough to expect the power density distributions of the core in the axial direction; on the other hand, the heterogeneous model improves the accuracy.

JAEA Reports

High-performance core concept study for high temperature engineering test reactor

Yamashita, Kiyonobu; Nakano, Masaaki*; Nojiri, Naoki; Fujimoto, Nozomu; Sawa, Kazuhiro; Nakata, Tetsuo*; Watanabe, Takashi*

JAERI-Tech 97-055, 62 Pages, 1997/10

JAERI-Tech-97-055.pdf:2.26MB

no abstracts in English

Journal Articles

Nuclear design of the high-temperature engineering test reactor (HTTR)

Yamashita, Kiyonobu; Shindo, Ryuichi; Murata, Isao; Maruyama, So; Fujimoto, Nozomu; Takeda, Takeshi

Nuclear Science and Engineering, 122, p.212 - 228, 1996/00

 Times Cited Count:22 Percentile:85.51(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Optimization method of rod-type burnable poisons for nuclear designs of HTGRs

Yamashita, Kiyonobu

Journal of Nuclear Science and Technology, 31(9), p.979 - 985, 1994/09

 Times Cited Count:6 Percentile:52.87(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Analysis of control rod reactivity worths for AVR power plant at cold and hot conditions

Yamashita, Kiyonobu; Murata, Isao; Shindo, Ryuichi; *; H.Werner*

Journal of Nuclear Science and Technology, 31(5), p.470 - 478, 1994/05

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Effects of core models and neutron energy group structures on xenon oscillation in large graphite-moderated reactors

Yamashita, Kiyonobu; Harada, Hiro; Murata, Isao; Shindo, Ryuichi; *

Journal of Nuclear Science and Technology, 30(3), p.249 - 260, 1993/03

 Times Cited Count:1 Percentile:19.05(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Analysis of overall temperature coefficient of reactivity of the VHTRC-1 core with a nuclear design code system for the High-Temperature Engineering Test Reactor

Yamashita, Kiyonobu; Murata, Isao; Shindo, Ryuichi

Nuclear Science and Engineering, 110, p.177 - 185, 1992/02

 Times Cited Count:3 Percentile:53.41(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Optimization of uranium isotope distribution and burnable poison of High temperature engineering test reactor(HTTR)

Yamashita, Kiyonobu; Shindo, Ryuichi; Murata, Isao; Maruyama, So; *

JAERI-M 89-118, 67 Pages, 1989/09

JAERI-M-89-118.pdf:1.65MB

no abstracts in English

Journal Articles

Analysis of SHE critical experiments by neutronic design codes for experimental very high temperature reactor

; ; ; *

Journal of Nuclear Science and Technology, 22(5), p.358 - 370, 1985/05

 Times Cited Count:13 Percentile:82.24(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Nuclear Analysis of the Experimental VHTR Fuel Lattice

*; ; ;

JAERI-M 84-209, 38 Pages, 1984/11

JAERI-M-84-209.pdf:1.19MB

no abstracts in English

JAEA Reports

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