Validation of Np-237 cross sections by analysis of BFS critical experiments with massively neptunium-loaded cores

Ishikawa, Makoto; Hazama, Taira

Three series of BFS critical experiments which loaded approximately 10 kg of $^{237}$ Np -dioxide were analyzed to verify the performance of major libraries with $^{237}$ Np nuclear data. The latest JENDL-3.3, ENDF/B-VII.0 and JEFF-3.1 showed satisfactory results from the $^{237}$ Np data viewpoint; however some other major data such as $^{239}$ Pu nu and fission, $^{238}$ U and/or the sodium inelastic scattering cross-sections of some libraries may need re-evaluation. Further, the effect of integral experimental information to obtain better predictions of reactor core parameters was demonstrated by the cross-section adjustment method.

Language	:	English
Journal	:	Proceedings of International Conference on Nuclear Data for Science and Technology (ND 2007), Vol.2
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Pages	:	p.817 - 820
Publication Year/Month	:	2008/05
Meeting title	:	International Conference on Nuclear Data for Science and Technology (ND 2007)
Held date	:	2007/04
Location (city)	:	Nice
Location (country)	:	France
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Keywords	:	no keyword
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Registration No. : BB20070313
JAEA Abstracts No. : 36001511
Paper Submission No. : 4804

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