Application of Multiband Method to Pin Cell Calculations.

• USHIO Tadashi

  Department of Nuclear Engineering, Faculty of Engineering, Osaka University Nuclear Engineering, Ltd.

• TAKEDA Toshikazu

  Department of Nuclear Engineering, Faculty of Engineering, Osaka University

抄録

In order to accurately calculate effective neutron cross sections in the resonance energy region, the multiband method has been applied to cell calculations. Cell calculations for UO₂ and MOX fuels of light water reactors have been performed and the results were compared with those of a continuous energy Monte Carlo code VIM and the conventional self-shielding method using the Dancoff factor.<BR>The k_∞ values calculated by the multiband method agreed with those of the VIM calculations within 0.20%Δk for the UO₂ fuel cell and within 0.30%Δk for the MOX fuel cell, respectively, whereas the Dancoff factor method yielded about 1.1%Δk errors for the two cells. The elementwise contribution to this error was investigated, and it was found that the effective microscopic cross sections, particularly those for the giant resonances of ²³⁸U, calculated by the multiband method were in good agreement with those of VIM. It was also found that interference effect between ²³⁸U and ²³⁵U resonances in the UO₂ fuel and that between ²³⁸U and ²³⁹Pu resonances in the MOX fuel made about 0.20% Δk contributions to k_∞ in both fuel cells.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 30 (11), 1167-1174, 1993

  一般社団法人 日本原子力学会

キーワード

• multiband method
• pin cell
• self-shielding effect
• light water reactor
• koovalue
• effective cross section
• heterogeneous system
• uranium dioxid
• mixed oxide fuels
• fuel cells
• resonance interference effects

詳細情報

• CRID: 1390282679070485888
• NII論文ID: 130000825772
• DOI: 10.3327/jnst.30.1167
• COI: 1:CAS:528:DyaK2cXovV2hsg%3D%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可