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Systematic Study on Fast-Neutron Capture Cross Sections of Stable Isotopes related Long-Lived Fission Products

Research Project

Project/Area Number 15360502
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

IGASHIRA Masayuki  Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, Associate Professor, 原子炉工学研究所, 助教授 (10114852)

Co-Investigator(Kenkyū-buntansha) OHSAKI Toshiro  Tokyo Institute of Technology, Research Laboratory for Nuclear Reactors, Research Associate, 原子炉工学研究所, 助手 (80262327)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2005: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2003: ¥8,900,000 (Direct Cost: ¥8,900,000)
Keywordsfast-neutron reaction / capture cross sections / capture gamma-ray spectra / zirconium isotopes / tin isotopes / long-lived fission products / 超寿命核分裂生成物
Research Abstract

The main objectives of this study are (1)improvemant in the sensitivity of gamma-ray detection system, (2)systematic measurement of fast-neutron capture cross sections and capture gamma-ray spectra for Zr-90,91,92,94 and Sn-117,118,119,120,122,124, which are impurity isotopes of the long-lived fission products Zr-93 and Sn-126, respectively, (3)improvemant in accuracy of theoretical prediction by the elucidation of fast-neutron capture reaction mechanism for Zr and Sn isotopes through the systematic analysis of experimental data, and (4)accurate evaluation of fast-neutron capture cross sections of the long-lived fission products Zr-93 and Sn-126. The summary of research results are as follows :
(1) The existing main NaI(Tl) detector was replaced with a larger NaI(Tl) detector with a diameter of 15 cm and a length of 30 cm, and the sensitivity of gamma-ray detector was improved.
(2) The systematic measurement was performed for Zr-90,91,92,94 and Sn-116,117,118,119,120,122,124. The data processing was completed for Zr-90,91,92,94 and Sn-117,118,119, and the capture cross sections and capture gamma-ray spectra were derived for those isotopes.
(3) The derived capture cross sections and capture gamma-ray spectra of Zr-90,91,92,94 and Sn-117,118,119 were theoretically analyzed by using the statistical model in nuclear reaction theory, and information on the fast-neutron capture reaction by Zr and Sn isotopes was obtained.
(4) The evaluation of fast-neutron capture cross sections of the long-lived fission products Zr-93 and Sn-126 was performed based on the obtained information, and evaluated values were obtained tentatively.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (14 results)

All 2006 2005 2004 Other

All Journal Article (13 results) Publications (1 results)

  • [Journal Article] Measurements of Neutron Capture Cross Sections for Gd Isotopes in the Energy Region from 10 ke V to 90 ke V2006

    • Author(s)
      G.N.Kim, W.C.Chung, T.I.Ro, T.Ohsaki, M.Igashira
    • Journal Title

      AIP Conference Proceedings 819

      Pages: 133-137

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of Gamma Rays from ke V-Neutron Capture Reaction by Zr-90,942006

    • Author(s)
      K.Ohgama, M.Igashira, T.Ohsaki
    • Journal Title

      AIP Conference Proceedings 819

      Pages: 373-377

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Systematic Measurement of ke V-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of Sn Isotopes2006

    • Author(s)
      J.Nishiyama, M.Igashira, T.Ohsaki, G.N.Kim, W.C.Chung, T.I.Ro
    • Journal Title

      AIP Conference Proceedings 819

      Pages: 579-580

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of Neutron Capture Cross-Sections for ^<155>Gd and ^<157>Gd Isotopes in the Neutron Energy Range from 10 to 90 ke V2006

    • Author(s)
      W.C.Chung, T.I.Ro, G.N.Kim, Igashira, T.Ohsaki
    • Journal Title

      Journal of the Korean Physical Society 48[4]

      Pages: 835-840

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of ke V-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<91,92>Zr2005

    • Author(s)
      K.Ohgama, M.Igashira, T.Ohsaki
    • Journal Title

      J.Nucl.Sci.Technol. 42[4]

      Pages: 333-340

    • NAID

      10014008066

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Systematic Measurement of ke V-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of Zr Isotopes2005

    • Author(s)
      K.Ohgama, M.Igashira, T.Ohsaki
    • Journal Title

      AIP Conference Proceedings 769

      Pages: 945-948

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<91,92>Zr2005

    • Author(s)
      K.Ohgama, M.Igashira, T.Ohsaki
    • Journal Title

      J.Nucl.Sci.Technol. 42・4

      Pages: 333-340

    • NAID

      10014008066

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Systematic Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of Zr Isotopes2005

    • Author(s)
      K.Ohgama, M.Igashira, T.Ohsaki
    • Journal Title

      AIP Conference Proceedings 769

      Pages: 945-948

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<91,92>Zr2005

    • Author(s)
      K.Ohgama
    • Journal Title

      J.Nucl.Sci.Technol. 42・4(未定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Measurement of ke V-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<209>Bi2004

    • Author(s)
      K.Saito, M.Igashira, J.Kawakami, T.Ohsaki, T.Obara, H.Sekimoto
    • Journal Title

      J.Nucl.Sci.Technol. 41[4]

      Pages: 406-412

    • NAID

      10012344957

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of Neutron Capture Cross-Sectiona and Capture γray Spectra of ^<161,162,163,164>Dy at 550 ke V2004

    • Author(s)
      H.Kim, J.K.Ahn, G.Kim, T.Ro, W.Chung, M.Igashira, T.Ohsaki, S.Mizuno
    • Journal Title

      Journal of the Korean Physical Society 45[6]

      Pages: 1474-1480

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<209>Bi2004

    • Author(s)
      K.Saito
    • Journal Title

      J.Nucl.Sci.Technol. 41・4

      Pages: 406-412

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Study on ke V-neutron capture cross sections and capture γ-ray spectra of ^<117,119>Sn

    • Author(s)
      J.Nishiyama, M.Igashira, T.Ohsaki, G.N.Kim, W.C.Chung, T.I.Ro
    • Journal Title

      Proceedings of the 2005 Symposium on Nuclear Data, February 2-3, 2006, Tokai, Japan (in print)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] K.Saito: "Measurement of keV-Neutron Capture Cross Sections and Capture Gamma-Ray Spectra of ^<209>Bi"J.Nucl.Sci.Technol.. 41・4. (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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