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Activation Analysis of Trace Impurities in Metallic Materials for Breeder and Fusion Reactors, and Measurements of Their Specific Activities

Research Project

Project/Area Number 01580219
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Nuclear engineering
Research InstitutionTohoku University

Principal Investigator

YAGI Masuo  Tohoku University, Institute for Material Research, Professor, 金属材料研究所, 教授 (10004269)

Co-Investigator(Kenkyū-buntansha) MASUMOTO Kazuyoshi  Tohoku University, Faculty of Science, Assistant, 理学部, 助手 (60124624)
HARA Mitsuo  Tohoku University, Institute for Material Research, Assistant, 助手 (90005918)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1990: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1989: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsPhoton activation / Proton activation / Fusion reactor materials / Specific activity / Alloyed steels / Breeder reactor materials / Absolute standardization method / Internal standard method / 炉材料 / 微量不純物 / 放射化分析 / 標準添加内標準法 / 残留放射能 / 低合金鋼 / ホウ素材料 / 希土類元素
Research Abstract

In recent years, fundamental and applicable studies on the developments of most suitable materials for breeder and fusion reactors have been made extensively. In these developments, as a matter of course, the actual conditions of radioactivation due to the major and minor elements and trace impurities in such materials must be seized accurately under a new viewpoint. Although such studies can generally be performed by radioactivation method using the materials analyzed previously with instrumental methods, the above actual conditions of radioactivation containing trace impurities can be achieved only by the use of the internal standard method coupled with the standard addition method as an absolute standardization method, which is resulted simultaneously in the concentrations and specific activities of all of the interesting elements. In the present studies, simultaneous determination of specific activities and concentrations of major alloying elements and impurities, such as Ti, Cr, C … More o, Ni, Cu, As, Zr, Nb, Mo, Sb, Sn and Pb, in many kinds of low and high alloy-steels were performed by photon activation analysis with 20 and 30 MeV bremsstrahlung using the above absolute standardization method, because the above samples are forced to use as irreplaceable materials for breeder and fusion reactors, and because photon activation produces the same radioactivities as those by (n, 2n) reactions due to fast neutrons. Furthermore, measurements of the specific activities produced in the above samples were also carried out similarly by using 60 and 100 MeV bremsstrahlung. On the basis of the results obtained, the actual conditions of radioactivities produced in each sample irradiated for 1000 hours with 20, 30, 60 and 100 MeV bremsstrahlung were calculated, and it was elucidated that the intensities of radioactivities produced in each sample were greatly affected by its major and minor components. On the other hand, simultaneous determination of a variety of impurities in B, Dy, Ho, Ce, Tb, Dy, Ho and/or their compounds as materials for reactors has also been examined by proton activation using the above absolute standardization method. From the results obtained, it was also proved that determination of the impurities in the above samples not only but the actual conditions of radioactivities produced can be seized satisfactory by the above method. Less

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 原 光雄: "標準添加内標準法による低合金鋼中の微量元素の光量子放射化分析" 核理研研究報告(東北大学). 22. 51-61 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 長谷川 大輔: "標準添加内標準内法による鉄鋼中の微量元素の光量子放射化分析" 核理研研究報告(東北大学). 23. 222-233 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 三頭 聡明: "光量子照射各種金属材料中の誘導残留放射能に関する研究(I)" 核理研研究報告(東北大学). 22. 62-75 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 駒 義和: "光量子照射各種金属材料中の誘導残留放射能に関する研究(II)" 核理研研究報告(東北大学). 23. 97-106 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 駒 義和: "光量子照射各種金属材料中の誘導残留放能に関する研究(III)" 核理研研究報告(東北大学). 23. 212-221 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 桝本 和義: "高純度希土類元素および化合物中の微量不純物の陽子放射化による定量" CYRIC Annual Report,Tohoku University. 1989. 119-123 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Hara: "Photon activation analysis of trace elements in low-alloy steels using the internal standard method coupled with the standard addition method" Research Report of Laboratory of Nuclear Science, Tohoku University. 22. 51-61 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] D. Hasegawa: "Photon activation analysis of trace elements in steels by the internal standard method coupled with the standard addition method" Research Report of Laboratory of Nuclear Science, Tohoku University. 23. 222-233 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Mitsugashira: "A study on the residual radioactivities induced in metallic materials by photon irradiation (I)" Research Report of Laboratory of Nuclear Science, Tohoku University. 22. 62-75 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Y. Koma: "A study on the residual radioactivities induced in metallic materials by photon irradiation (II)" Research Report of laboratory of Nuclear Science, Tohoku University. 23. 97-106 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Y. Koma: "A study on the residual radioactivities induced in metallic materials by photon irradiation (III)" Research Report of laboratory of Nuclear Science, Tohoku University. 23. 212-221 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Masumoto: "Determination of trace impurities in highly pure rare earth elements and their oxides by charged particle activation analysis" CYRIC Annual Report, Tohoku University. 1989. 119-123 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 原 光雄: "標準添加内標準法による低合金鋼中の微量元素の光量子放射化分析" 核理研研究報告(東北大学). 22. 51-61 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 長谷川 大輔: "標準添加内標準法による鉄鋼中の微量元素の光量子放射化分析" 核理研研究報告(東北大学). 23. 222-233 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 三頭 聡明: "光量子照射各種金属材料中の誘導残留放射能に関する研究(I)" 核理研研究報告(東北大学). 22. 62-75 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 駒 義和: "光量子照射各種金属材料中の誘導残留放射能に関する研究(II)" 核理研研究報告(東北大学). 23. 97-106 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 駒 義和: "光量子照射各種金属材料中の誘導残留放射能に関する研究(III)" 核理研研究報告(東北大学). 23. 212-221 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 桝本 和義: "高純度希土類元素および化合物中の微量不純物の陽子放射化による定量" CYRIC Annual Report,Tohoku University. 1989. 119-123 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 原光雄、飯野栄一、枡本和義、八木益男: "標準添加内標準法による低合金鋼中の微量元素の光量子放射化分析" 東北大学核理研研究報告. 22. 51-61 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 三頭聡明、駒義一、枡本和義、八木益男: "光量子照射各種金属材料中の誘導残留放射能に関する研究" 東北大学核理研研究報告. 22. 62-75 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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