Measurement of Leakage Neutron Spectra from a Spherical Pile of Zirconium Irradiated with 14MeV Neutrons and Validation of Its Nuclear Data
スポンサーリンク
概要
- 論文の詳細を見る
In order to make a benchmark validation of the nuclear data for Zr, the leakage neutron spectrum from a Zr sphere of a 61-cm diameter was measured between 0.1 and 16 MeV using a time-of-flight technique with a 14 MeV neutron source facility, OKTAVIAN. The result was compared with the calculation using the Monte Carlo code MCNP-4A. To investigate the spectrum dependence on the individual neutron reactions, test calculations were carried out with the MCNP-4A code using the JENDL-3.2-based libraries, in which partial cross section values were reduced from the original values. From the comparison between the measured and the calculated spectra, it was found that each of the results could predict well the experiment in general. However, in detail, both ENDF/B-VI and EFF-2.4 gave considerable overestimation above 1 MeV. The JENDL-3.2 predicts the spectrum almost satisfactorily except below 0.8 MeV and around 10 MeV. The discrepancy found in JENDL-3.2 calculation is considered due to the cross section values of the (n,2n) reaction and its secondary energy distributions (SED). The modified JENDL-3.2 library with the reduced (n,2n) reaction values and the lower SED below 1 MeV reproduced the experiment with better agreement over the whole energy range.
- 社団法人 日本原子力学会の論文
- 2003-06-25
著者
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木村 逸郎
京都大学
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ICHIHARA Chihiro
Research Reactor Institute, Kyoto University
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Ichihara Chihiro
Research Reactor Institute Kyoto University
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Kanno Ikuo
Department Of Nuclear Engineering Kyoto University
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KIMURA Itsuro
Institute of Nuclear Technology, Institute of Nuclear Safety Systems, Inc.
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YAMAMOTO Junji
Department of Surgery, National Cancer Center Hospital
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Yamamoto Junji
Department Of Electrical Engineering Setsunan University
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Yamamoto J
Department Of Electrical Engineering Setsunan University
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Kimura Itsuro
Institute Of Nuclear Safety System
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HAYASHI Shu
College of Tourism, Rikkyo University
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TAKAHASHI Akito
Department of Nuclear Engineering, Graduate School of Osaka University
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Takahashi Akito
Department Of Nuclear Engineering Graduate School Of Osaka University
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木村 逸郎
大阪科学技術センター
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Yamaguchi Junpei
Hepatobiliary And Pancreatic Surgery Division National Cancer Center Hospital
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Hayashi S
College Of Tourism Rikkyo University
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Takahashi Akito
Department Of Nuclear Engineering Graduate School Of Engineering Osaka University
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