Measurements of thermal disadvantage factors in light-water moderated PuO2-UO2 and UO2 lattices.

• OHNO Akio

  Japan Atomic Energy Research Institute

• KOBAYASHI Iwao

  Japan Atomic Energy Research Institute

• TSURUTA Harumichi

  Japan Atomic Energy Research Institute

• HASHIMOTO Masao

  Japan Atomic Energy Research Institute

• SUZAKI Takenori

  Japan Atomic Energy Research Institute

• MURAKAMI Kiyonobu

  Japan Atomic Energy Research Institute

• MATSUURA Shojiro

  Japan Atomic Energy Research Institute

• KIKUCHI Saburo

  Power Reactor and Nuclear Fuel Development Corp.

• KAJIYAMA Takashi

  Power Reactor and Nuclear Fuel Development Corp.

• SASAJIMA Hideyoshi

  Power Reactor and Nuclear Fuel Development Corp.

• YUMOTO Ryozo

  Power Reactor and Nuclear Fuel Development Corp.

抄録

The disadvantage factor for thermal neutrons in light-water moderated PuO₂-UO₂ and UO₂ square lattices were obtained from measurements of thermal neutron density distri-butions in a unit lattice cell, measured with Dy-Al wire detectors. The lattices consisted of 3.4w/0 PuO₂-UO₂ and 2.6w/0 UO₂ fuel rods, and the water-to-fuel volume ratio within the unit cell was parametrically changed. The PuO₂-UO₂ and UO₂ fuel rods were designed to realize equal fissile atomic number density.<BR>The disadvantage factors thus measured were 1.36±0.07, 1.37±0.08, 1.40±0.06 and 1.38±0.06 in the PuO₂-UO₂ fuel lattices, and 1.30±0.06, 1.31±0.08, 1.30±0.08 and 1.33 ±O.06 in the UO₂, for water-to-fuel volume ratios, of 1.76, 2.00, 2.38 and 2.95, respec-tively. This difference in disadvantage factor between PuO₂-UO₂ and UO₂ fuel lattices corresponds to about 8%. Calculated results obtained by multigroup transport code LASER agreed well with the measured ones.

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） 17 (1), 26-36, 1980

  一般社団法人 日本原子力学会

キーワード

• square lattice cell
• thermal neutrons
• neutron density distribution
• light-water reactors
• two-region core
• disadvantage factors
• computer calcula-tions
• plutonium dioxide

詳細情報

• CRID: 1390001204094816128
• NII論文ID: 130000828624
• DOI: 10.3327/jnst.17.26
• COI: 1:CAS:528:DyaL3cXhtlOgt7c%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