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結晶の照射効果に及ぼす電子励起および格子励起の相乗効果

Research Project

Project/Area Number 07455260
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical properties of metals
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

KINOSHITA Chiken  Kyushu University, Faculty of Engineering, Professor, 工学部, 教授 (50037917)

Co-Investigator(Kenkyū-buntansha) YASUDA Kazuhiro  Kyushu University, Faculty of Engineering, Research Associate, 工学部, 助手 (80253491)
SHIIYAMA Kenichi  Kyushu University, Faculty of Engineering, Research Associate, 工学部, 助手 (30243900)
MATSUMURA Syo  Kyushu University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (60150520)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1996: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1995: ¥4,700,000 (Direct Cost: ¥4,700,000)
KeywordsCeramics / MgAl_2O_4 / Al_2O_3 / irradiation / TEM / radiation damage / ionization / displacement / 照射効果 / 電子励起 / 格子励起 / 相乗効果 / 電気特性 / 力学特性 / 超高圧電子顕微鏡 / イオン加速器
Research Abstract

We have investigated the role of ionization and PKA (primary knock on atom) energy spectrum on the physical properties in ceramic insulators. The ceramics studied in this study are stoichiometric- and nonstoichiometric- magnesium aluminate spinel, alumina and magnesia.
In situ observations of microstructural evolution were carried out under concurrent irradiation with ions and electrons in TEM-accelerator facilities. We have found that the intense ionization and/or subthreshold nuclear energy, that is the nuclear energy which does ont produce displacements of atoms, suppress the formation of interstitial dislocation loops or promote the formation of bubbles in ceramics. Results were discussed in terms of ratio of ionizing to nuclear stopping power, energy density in displacement of cascades and the flux distribution of focused electron beam. An importance of cation diffusion driven by low energy electron irradiation has been found for the concurrent irradiation effects.
A special TEM holders has been developed in this study for in situ measurements of electrical conductivity under electron irradiation in a high voltage electron microscope. The ionizing radiation increases electrical conductivity (RIC : radiation induced conductivity) in ceramic insulators at the early stage of irradiation. Displecement damage can be important at high dose irradiation. We have also discussed the mechanism of thermally stimulated conductivity which can be a critical problem for fusion insulators.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (42 results)

All Other

All Publications (42 results)

  • [Publications] T.Sonoda,H.Abe,C.Kinoshita and H.Naramoto: ""Formation and growth process of defect clusters in magnesia under ion irradiation"" Nuclear Instrument and Method,Physical Research. B(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sonoda,C.Kinoshita and A.Manabe: ""Effects of OH^- ions on the formation process of defect clusters in MgO crystals"" J.Nuclear Materials. (印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Yasuda,C.Kinoshita et al.: ""Concurrent irracliation effects with ionization and displacement on the formation precess of defect clusters in magnesium" Proc.of the 7th inf.symp.on advanced nuclear energy research. (印刷中)aluminate spinal. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] N.Yu,K.E.Sickafus,M.Nastasi,K.Yasuda et al.: ""A study of ion-beam induced lattice damage in flouride structure materials : zirconia and calucium flouride"" Nuclear Instrument and Method,Physical Research. B(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.M.R.How lader,T.Izu,C.Kinoshita et al.: ""In situ measurements of electrical conductivity of alumina under electron irradiation in a high voltage electron microscop" J.Nuclear Materials. 239. 245-252 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita and S.J.Zinkle: ""Potential and limitations of ceramics in terms of structural and electrical integrity in fusion environments"" J.Nuclear Materials. 233-237. 100-110 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Shiiyama,T.Izu,C.Kinoshita et al.: ""Measurements of electrical conductivity of ceramics under electron irradiation in a high voltage electron microscope"" J.Nuclear Materials. 233-237. 1332-1335 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Yasuda,C.Kinoshita M.Kutsuwada et al.: ""Nucleation and growth process of defect clusters in copper during helium ion irradiation"" J.Nuclear Materials. 233-237. 1332-1337 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita,H.Abe S.Maeda et al.: ""Effects of concurrent irradiation with ions and electrons on the formation process of defect clusters in covalent and ionic crystals"" J.Nuclear Materials. 219. 152-160 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita,K.Fukumoto K.Fukuda et al.: ""Why is magnesium aluminate spinal radiation resistant material?" J.Nuclear Materials. 219. 143-151 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Abe,C.Kinoshita and Y.Denda: ""Stability of cascades under ion and electron irradiation in germanium"" Proc.of Materials Research Society Symposium. 373. 487-492 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Abe,H.Naramoto and C.Kinoshita: ""Amorphization of graphite under ion or electron irradiation"" Proc.of Materials Research Society Symposium. 373. 383-388 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.J.Zinkle, C.Kinoshita: "Defect production in Ceramics" J.Nucl. Mater.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sonoda, H.Abe, C.Kinoshita and H.Naramoto: "Formation and growth process of defect clusters in magnesia under ion irradiation" Nucl. Inst. Meth. Phys. Res. B.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sonoda, C.Kinoshita and A.Manabe: "Effects of Oh ions of the formation process of defect clusters in MgO crystals" J.Nucl. Mater.(in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Yasuda, C.Kinoshita, R.Morisaki and H.Abe: "Concurrent irradiation effects with ionization and displacement on the formation process of defect clusters in magunesium aliminate spinel" Proc. of the 7th international ymposium on advanced nuclear energy research, Takasaki, Japan (JAERI). (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] N.Yu, K.E.Sickafus, M.Nastasi, K.Yasuda et al.: "A study of ion-beam induced lattice damage in flouride-structure materials : zirconia and calucium flouride" Nucl. Inst. Meth. Phys. Res.B (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita and S.J.Zinkle: "Potential and limitations of ceramics in terms of structural and electricak integrity in fusion environments" J.Nucl. Mater.233-237. 100-110 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Shiiyama, T.Izu, C.Kinoshita, M.Kutsuwada: "Measurements of electrical conductivity of ceramics under electron irradiation in a high voltage electron microscope" J.Nucl. Mater.233-237. 1332-1335 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] K.Yasuda, C.Kinoshita M.Kutsuwada and H.Hirai: "Nucleation and growth process of defect clusters in copper during helium ion irradiation" J.Nucl. Mater.233-237. 1051-1056 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita, H.Abe, S.Maeda and K.Fukumoto: "Effect of Concurrent Irradiation with Ions and Electrons on the Formation Process of Defect Clusters in Covalent and Ionic Crystals" J.Nucl. Mater.219. 152-160 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] C.Kinoshita, K.Fukumoto, K.Fukuda, F.A.Garner and G.W.Hollenberg: "Why is Magnesia Spinel Radiation-Resistant Material?" J.Nucl. Mater.219. 143-151 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Abe, C.Kinoshita and Y.Denda: "Stability of Cascades under Ion and Electron Irradiation in Germanium" Mat. Res. Soc. Symp. Proc.Vol.373. 487-492 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Abe, H.Naramoto and C.Kinoshita: "Amorphization of Graphite under Ion or Electron Irradiation" Mat. Res. Soc. Symp. Proc.Vol.373. 383-388 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Sonoda,H.Abe,C.Kinoshita and H.Naramoto: ""Formation and growth process of defect clusters in magnesia under ion irradiation"" Nuclear Instrument and Method,Physical Research. B(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Sonoda,C.Kinoshita and A.Manabe: ""Effects of OH^- ions on the formation process of defect clusters in MgO crystals"" J.Nuclear Materials. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Yasuda,C.Kinoshita,R.Morisaki and H.Abe: ""Concurrent irradiation effects with ionization and displacement on the formation peocess of defect clusters in magnesium aluminate spinel"" Proc.of the 7th international Symposium on advanced nuclear energy research. (印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Yu,K.E.Sickafus,M.Nastasi,K.Yasuda et al.: ""A study of ion-beam induced lattice damage in flouride-structure materials:Zirconia and calucium flouride"" Naclear Instrument and Method,Physical Research. B(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.H.R.Howlader,T.Izu,C.Kinoshita et al.: ""In situ measurements of electrical unductivity of alumina under electron irradiation in a high voltage electron microscope"" J.Nuclear Materials. 239. 245-252 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] C.Kinoshita and S.J.Zinkle: ""Potential and limitations of cxeramics in terms of structural and electrical integrity in fusion environments"" J.Nuclear Materials. 233-237. 100-110 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Shiiyama,T.Izu,C.Kinoshita and M.Kutsuwada: ""Measurements of electrical conductivity of ceramics under electron irradiation in a high voltage electron microscope"" J.Nuclear Materials. 233-237. 1332-1335 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Yasuda,C.Kinoshita,M.Kutsuwada and T.Hirai: ""Nucleation and growth process of defect clusters in copper during helium ion irradiation"" J.Nuclear Materials. 233-237. 1332-1337 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] C.Kinoshita,H.Abe,S.Maeda and K.Fukumoto: ""Effect of concurrent irradiation with ions and electrons on the formation process of defect clusters in covalent and ionic crystals"" J.Nuclear Materials. 219. 152-160 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] C.Kinoshita,K.Fukumoto,K.Fukuda,F.A.Garner,et al.: ""Why is magnesia spinel radiation resistant material?" J.Nuclear Materials. 219. 143-151 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Abe,C.Kinoshita and Y.Denda: ""Stability of Cascades under ion and electron irradiation in germanium"" Proceedings of Materials Research Society Symposium. 373. 487-492 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Abe,H.Naramoto and C.Kinoshita: ""Amorphization of graphite under ion on electron irradiation"" Proceerrdings of Materials Research Society Symposium. 373. 383-388 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 木下 智見: "Why is Magnesia Spinel a Radiation-Resistant Material?" Journal of Nuclear Materials. 219. 143-151 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 木下 智見: "Effect of Concurrent Irradiation with Ions and Electrons on the Formation Process of Defect Clusters in Covalent and Ionic Crystals" Journal of Nuclear Materials. 219. 152-160 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 木下 智見: "Amorphization of Graphite under Ion of Electron Irradiation" Journal of Nuclear Materials. 373. 383-388 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 木下 智見: "In-situ Measurements of Electrical Conductivity of Alumina under Electron Irradiation in a High Voltage Electron Microscope" Journal of Nuclear Materials. (印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 椎山 謙一: "Measurements of Electrical Conductivity of Ceramics under Electron Irradiation in a High Voltage Electron Microscope" Journal of Nuclear Materials. (印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 木下 智見: "Potential and Limitations of Ceramics in Terms of Structural and Electrical Integrity in Fusion Environments" Journal of Nuclear Materials. (印刷中). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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