Effects of Organic Solvent on Infinite Neutron Multiplication Factor of Homogeneous Plutonium Nitrate Solution System

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The validity of replacing organic solvent with water in making models for criticality safety evaluation analysis of fuel solution systems was examined by the calculation of the infinite neutron multiplication factor (k<SUB>inf</SUB>) for the homogeneous plutonium(IV) nitrate in aqueous and organic solvent solutions. The atomic number densities of fuel solutions were determined by the density formula based on measurements. It was confirmed that kinf of plutonium(IV) nitrate-30vol% tributylphosphate (TBP)-dodecane organic solventsystem is nearly equal to that of plutonium nitrate-aqueous solution system in general. However, more strictly, the values of k<SUB>inf</SUB> of organic solvent system became slightly larger than the corresponding values of aqueous solution in the Pu concentration ranged up to 70g/l, which gives the opposite result to Weber's for plutonium nitrate-30vol% TBP-kerosene organic system. Consequently, the estimated lower limit critical concentration for <SUP>239</SUP>Pu(NO<SUB>3</SUB>)<SUB>4</SUB> organic solvent system was found 1% smaller than the corresponding value for aqueous solution system. It was also found that k<SUB>inf</SUB> tends to increase by increasing the concentration of TBP in organic solvent.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 35(5), 365-369, 1998-05-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002079438
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4474209
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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