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Establishment of Modeling of Hydrogen Isotopes Recycling in Plasma Facing Material for Control of the D-T Burning Experiments

Research Project

Project/Area Number 05558067
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Nuclear fusion studies
Research InstitutionNagoya University

Principal Investigator

MORITA Kenji  Nagoya University Department of Crystalline Materials Science, Professor, 工学部, 教授 (10023144)

Co-Investigator(Kenkyū-buntansha) OGIWARA Tokuo  Japan Atomic Energy Research Institute, Department of Fusion Facilities Senior S, 核融合装置試験部, 副主任研究員
SAIDOH Masahiro  Japan Atomic Energy Research Institute, Department of Fusion Facilities Principa, 核融合装置試験部, 主任研究員
KATO Masahiko  Nagoya University, Department of Crystalline Materials Science, Assistant Profes, 工学部, 助手 (70222429)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1994: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1993: ¥4,700,000 (Direct Cost: ¥4,700,000)
KeywordsHydrogen Isotopes / Hydrogen Recycling / D-T Burning Experiment / Graphite / Elastic Recoil Detection / Isotope Effect / Hydrogen Retention / Hydrogen Re-emission / D-T反応 / 炉壁材料 / イオンビーム分析法 / 水素の捕捉
Research Abstract

Goal of this project is to clarify the elementary processes in the retention and reemission of hydrogen isotopes for plasma facing materials and to establish the model describing their dynamic transport in the materials for prediction and evaluation of hydrogen recycling rates during H^+ and D^+ dual irradiations.
In 1993 and 1994, we have following tasks for graphite materials concerning this project.
1) The mass balance equations describing the transport of hydrogen isotopes in graphite during single hydrogen ion irradiation have been proposed and the rate constants of the elementary process involved are reviewed. The mass balance quations for dial H^+ and D^+ irradiations have been proposed.
2) The energy dependence of the depth profiles and the peak concentrations of hydrogen refained in graphite by implantation with H_2^+ ion beams at energies 0.2-5.0keV has been measured by means of the elastic recoil detector (ERD) technique. The steady state depth profile and peak concentrations a … More re found to be well explained in terms of the solution of the mass balance equations proposed.
3) The MeV He^+ ion-induced re-emission of hydrogen isotopes (H,D) from graphite implanted with 5 KeV H_2^+ or D_2^+ ion beams upto saturation at room temperature were measured by means of the ERD technique and the He^+ ion induced detrapping crosssection and the ratio of the local molecular recombination rate to the trapping rate were defermined. It is found that the isotope ratio of the latter values for H to D is about 2 which was reasonably well explained in terms of the diffusion-limited reaction model.
4) The retention curves of H and D in graphite irradiated simultaneously withH_2^+ and D_2^+ ion beams at room temperature were measured under the condition that both projected range are the same. The isotope ration of the saturation concentrations of D to H was found to be 1.7 which was excellently well explained by the solution of the mass balance equations for the H^+ and D^+ dual irradiations proposed and the rate constants of elementary processes based on the diffusion-limites reaction model. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] 森田 健治: "Dynamic Behavior of Hydrogen Isotopes Implanted into Graphite studied by Means of Ion Beam Analysis Techniques" Memoirs Facult Eng., Nagoya Univ.45. 57-104 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 長谷部 裕治: "Energy Dependence of Depth Profiles and Peak Concentrations of Hydrogen Implanted into Graphite" J. Nucl. Mater.212-215. 1452-1455 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 土屋 文: "Energy Dependence of MeV He^+Ion^-Induced Re^-emission of Hydrogen Isotopes Implanted into Graphite" J. Nucl. Sci. Technol.33. 1301-1307 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 武藤 嘉男: "Fraction of Hydorocarbon Emission in Thermal Re-emission of Hydrogen Implanted into Grahite" J. Nucl. Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 土屋 文: "Thermal Re-emission of Hydrogen Isotopes from Graphite in the High Temperature Regime above 1000K" J. Nucl. Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田 健治: "Calculations of Thermal Desorption Spectra of Hydrogen Molecule and Hydrocarbon Molecule from Graphite" J. Nucl. Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Morita and Y.Hasebe: "Dynamic Behavior of Hydrogen Isotopes Implanted into Graphite Studied by Means of Ion Beam Analysis Technique" Memoirs School Eng.Nagoya Univ.45. 57-104 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Y.Hasebe and K.Morita: "Energy Dependence of Depth Profiles and Peak Concentrations of Hydrogen Implanted into Graphite" J.Nucl.Mater.212-215. 1452-1455 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] B.Tsuchiya and K.Morita: "Energy Dependence of Mev He^+ Ion-induced Detrapping of Hydrogen Trapped in Graphite, Secondary Ion Mass Spectroscopy SIMS IX,ed.by A.Benning hoven et al." John Wiley&Sons. 108-111 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] N.Ogiwara, R.Jimbou, M.Saidoh, S.Michizono, Y.Saito, K.Mori and K.Morita: "The Reaction of H_2O,O_2 and EnergeticO_2^+ on Boron Carbide" J.Nucl.Mater.212-215. 1260-1265 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] B.Tsuchiya and K.Morita: "Energy Dependence of MeV He^+ Ion-induced Re-emission of Hydrogen Isotopes Implanted into Graphite" J.Nucl.Sci.and Technol.31. 1301-1307 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Y.Muto and K.Morita: "Fraction of Hydrocarbon Emission in Thermal Re-emission of Hydrogen Implanted into Graphite" J.Nucl.Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] B.Tsuchiya and K.Morita: "Thermal Re-emission of Hydrogen Isotopes from Graphite in the High Temperature Regime above 1000K" J.Nucl.Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Morita and Y.Muto: "Calculations of Thermal Desorption Spectra of Hydrogen Molecule and Hydrocarbon Molecule from Graphite Using the Mass Balance Equations" J.Nucl.Mater.(in print). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] B.Tsuchiya and K.Morita: "Re-emission of H and D Implants from Graphite by D^+ and H^+ Ion Bombardments" J.Nucl.Mater.(to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] B.Tsuchiya and K.Morita: "Isotope Effect on Hydrogen Retention in Graphite by H^+ and D^+ Dual Implantation" J.Nucl.Mater.(to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] K.Morita and B.Tsuchiya: "Dynamic Behavior of Hydrogen Isotopes Implanted into Graphite, Proc.2nd Japan/China Symp.Mater.for Advanced Energy Systems and Fission and Fusion Eng." Sanjyo-Kaikan, Univ.of Tokyo, Tokyo, Japan. 156-161 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 森田健治: "Dynamic Behavior of Hydrogen Isotopes Implanted into Graphite studied by Means of Ion Beam Analysis Techniques" Memoirs Facult Eng.,Nagoya Univ.45. 57-104 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 長谷部裕治: "Energy Dependence of Depth Profiles and Peak Concentrations of Hydrogen Implanted into Graphite" J.Nucl.Mater.212-215. 1452-1455 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 土屋文: "Energy Dependence of MeV He^+ Ion-Induced Re-emission of Hydrogen Isotopes Implanted into Graphite" J.Nucl.Sci.Technol.33. 1301-1307 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 武藤嘉男: "Fraction of Hydrocarbon Emission in Thermal Re-emission of Hydrogen Implanted into Graphite" J.Nucl.Mater.(in print). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 土屋文: "Thermal Re-emission of Hydrcgen Isotopes from Graphite in the High Temperature Regime above ioook" J.Nucl.Mater.(in print). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田健治: "Calculations of Thermal Desorption Spectra of Hydrogen Moleaule and Hydrocarbon Molecule from Graphite" J.Nucl.Mater.(in print). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森田健治: "Dymamic Behavior of Hydrogen Isotopes Implanted into Graphite studied by Means of Ion Beam Analysis Techniques" Memoirs.Facult.Eng.Nagoya Univ. 45. 57-104 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 近藤憲司: "Energy Dependence of Particle Reflection Coefficient of Ions from Solid Sulfaces in the Low Energy Regime below 200eV" Nucl.Instr.Meth.B78. 68-71 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 池田裕二: "Sputtering of Metal-Corbide Overlaid Graphite Induced by High Heat flux Plasma Irradiation at High Temperatures" J.Nucl.Mater. (in print). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 長谷部裕治: "Energy Dependence of Depth Profiles and Peak Concentrations of Hydrogen Implanted into Graphite." J.Nucl.Mater.(in print). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 土屋文: "Energy Dependence of MeV He^+ Ion-Induced Detrapping Cross-Section of Hydrogen Trapped in Graphite" Proc.Int.Conf.SIMS,Yokohama. (in print). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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