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New Development of Studies on Chemical Reactions in Ultrapure Quantum Solid Hydrogen at Very Low Temperature

Research Project

Project/Area Number 13640507
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionGraduate School of Engineering, Nagoya University

Principal Investigator

MIYAZAKI Tetsuo  Graduate School of Engineering, Nagoya University, Professor, 工学研究科, 教授 (90023126)

Co-Investigator(Kenkyū-buntansha) KUMAGAI Jun  Graduate School of Engineering, Nagoya University, Associate Professor, 工学研究科, 講師 (20303662)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsH atom / Very low temperature / High resolution ESR / Solid parahydrogen / Tunneling reaction / Quantum solid / Ethyl radical / Recombination reaction
Research Abstract

(1) High Resolution ESR Spectroscopy at Very Low Temperature
The author proposed high resolution ESR spectroscopy by use of ultrapure solid parahydrogen. Since parahydrogen has no nuclear magnetic moments, there exist no superhyperfine interactions of a free radical with parahydrogen molecules, resulting in the very narrow ESR spectrum. For example, ESR spectrum of ethyl radicals in solid parahydrogen consists of 23 narrow lines. The structure of radicals at very low temperature can be analyzed exactly by use of this high resolution ESR spectroscopy.
(2) Effect of Energy Dissipation on Tunneling Reaction in Solid Parahydrogen
Untrapure solid parahydrogen is a very deficient energy acceptor like vacuum because of the lack of its interactions with reactants. The author discovered that the energy dissipation controls drastically the tunneling recombination reaction of H atoms and electron bubbles in ultapure solid parahydrogen. This is the first evidence for the effect of energy dissipation on tunneling reactions.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] T.Miyazaki et al.: "Controlling factors of tunneling reactions in solid hydrogen at very low temperature"Radiat. Phys. Chem.. 60. 381-387 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "High-resolution ESR spectroscopy of ethyl radicals in solid ultra pure parahydrogen"J. Chem. Phys.. 114. 10024-10030 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Resonance effect on tunneling reaction H + H_2 → H_2 + H in solid hydrogen"J. Low Temp. Phys.. 122. 265-277 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Absence of recombination of neighboring H atoms in highly purified solid parahydrogen : ESR, ENDOR and ESE studies"J. Chem. Phys.. 116. 1109-1119 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki: "Large isotope effect on the tunneling chemical reaction"J. Nuclear Science Technology. 39. 339-343 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Suppression and enhancement of tunneling ion recombination of Electron bubbles in solid parahydrogen at 4.2K."Chem. Phys. Lett.. 360. 8-12 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki: "Atom tunneling reaction in solid hydrogen (in Atom Tunneling Phenomena in Physics, Chemistry and Biology, edited by T.Miyazaki)"Springer-Verlag, Heidelberg, Germany. 30 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Controlling factors of tunneling reactions in solid hydrogen at very low temperature"Radiat.Phys.Chem.. 60. 381-387 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "High-resolution ESR spectroscopy of ethyl radicals in solid ultrapure parahydrogen"J.Chem.Phys.. 114(22). 10024-10030 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Resonance effect on tunneling reaction H + H_2 → H_2+ H in solid hydrogen"J.Low Temp.Phys.. 122(3). 265-277 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Absence of recombination of neighboring H atoms in highly purified solid parahydrogen : ESR, ENDOR and ESE studies"J.Chem.Phys.. 116(3). 1109-1119 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki: "Large isotope effect on the tunneling chemical reaction"J.Nuclear Science Technology. 39(4). 339-343 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Suppression and enhancement of tunneling ion recombination of electron bubbles in solid parahydrogen at 4.2 K."Chem.Phys.Lett.. 360. 8-12 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki, edited by T.Miyazaki: "Atom tunneling reaction in solid hydrogen, in Atom Tunneling Phenomena in Physics, Chemistry and Biology"Springer-Verlag. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Miyazaki et al.: "Absence of recombination of neighboring H atoms in highly purified solid parahydrogen : ESR, ENDOR and ESE studies"J. Chem. Phys.. 116. 1109-1119 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Miyazaki: "Large isotope effect on the tunneling chemical reaction"J. Nuclear Science Technology. 39. 339-343 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Miyazaki et al.: "Suppression and enhancement of tunneling ion recombination of Electron bubbles in solid parahydrogen at 4.2 K."Chem. Phys. Lett.. 360. 8-12 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Miyazaki: "Atom tunneling reaction in solid hydrogen (in Atom Tunneling Phenomena in Physics, Chemistry and Biology, edited by T. Miyazaki)"Springer-Verlag, Heidelberg, Germany. 30 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Miyazaki et al.: "Controlling factors of tunneling reactions in solid hydrogen at very low temperature"Radiat.Phys.Chem.. 60. 381-387 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Miyazaki et al.: "ESR,ENDOR and ESEEM spectroscopy study on local structure and motion of reactants: Selective tunneling radical abstraction"J.Phys.Chem.. 105・14. 3652-3557 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Miyazaki et al.: "High-resolution ESR spectroscopy of ethyl radicals in solid ultra pure parahydrogen"J.Chem.Phys.. 114・22. 10024-10030 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Miyazaki et al.: "Resonance effect on tunneling reaction H+H_2→H_2+H in solid hydrogen"J.Low Temp.Phys.. 122・3. 265-277 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Miyazaki et al.: "Absence of recombination of neighboring H atoms in highly purified solid parahydrogen: ESR,ENDOR and ESE studies"J.Chem.Phys.. 116・3. 1109-1119 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Miyazaki et al.: "Large isotope effect on the tunneling chemical reaction"J.Nuclear Science Technology. (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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