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Analyses with latest major nuclear data libraries of the fission rate ratios for several TRU nuclides in the FCA-IX experiments

Fukushima, Masahiro   ; Tsujimoto, Kazufumi ; Okajima, Shigeaki  

A series of integral experiments was conducted in FCA assemblies with systematically changed neutron spectra covering from the intermediate to fast ones. The experiments provide systematic data of central fission rates for TRU nuclides containing minor actinides, $$^{237}$$Np, $$^{238}$$Pu, $$^{239}$$Pu, $$^{242}$$Pu, $$^{241}$$Am, $$^{243}$$Am, and $$^{244}$$Cm. Latest major nuclear data libraries, JENDL-4.0, ENDF/B-VII.1, and JEFF-3.2, were tested using benchmark models regarding the fission rate ratios relative to $$^{239}$$Pu. For all the libraries, the benchmark tests by a Monte Carlo calculation code show obvious overestimations particularly for the fission rate ratios of $$^{244}$$Cm to $$^{239}$$Pu. Additionally, a large discrepancy about by 20% between the libraries is revealed for the fission rate ratio of $$^{238}$$Pu to $$^{239}$$Pu measured in the intermediate neutron spectrum. The cause of discrepancy is furthermore clarified by sensitivity analyses.

Language

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English

Journal

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Journal of Nuclear Science and Technology

Volume

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54

Number

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7

Pages

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p.795 - 805

Publication Year/Month

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2017/07

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1080/00223131.2017.1299644

DOI for research data

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Link to research data related to this paper/report.

Keywords

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FCA; TRU; central fission rate ratio; benchmark; Monte Carlo; JENDL-4.0; ENDF/B-VII.1; JEFF-3.2

Research Facility

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FCA(高速炉臨界実験装置)  

Press Release

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JAEA R&D Navigator

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Reliability Evaluation of Nuclear Data Required for Core Design of Nuclear Transmutation Systems; Verification of Trans-Uranium (TRU) Cross-Sections Based on Critical Experiments using FCA[/]

Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:70.42

Category:Nuclear Science & Technology

Altmetrics

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