• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Uilta high resolution spectroscopy of excitons in quantum crystal

Research Project

Project/Area Number 09304040
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

MOMOSE Takamasa  Associate Professor, Department of Chemistry, Graduate School of Science, Kyoto University, 大学院・理学研究科, 助教授 (10200354)

Co-Investigator(Kenkyū-buntansha) WAKABAYASHI Tomonari  Assistant, Department of Chemistry, Graduate School of Science, Kyoto University, 大学院・理学研究科, 助手 (30273428)
SHIDA Tadamasa  Professor Emeritus, Department of Chemistry, Graduate School of Science, Kyoto University, 大学院・理学研究科, 名誉教授 (60025484)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥34,500,000 (Direct Cost: ¥34,500,000)
Fiscal Year 1999: ¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1998: ¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1997: ¥21,500,000 (Direct Cost: ¥21,500,000)
Keywordssolid hydrogen / quantum crystal / laser spectroscopy / infrared spectroscopy / high-resolution spectroscopy / radiation / molecular ion / Stark spectroscopy / HD / 位相緩和 / 励起子 / 高分解分光 / ラマン分光 / 緩和 / 分子性結晶
Research Abstract

A crystal of parahydrogen, in which nearly all the molecules are in the J=0 rotational state, is known as a quantum crystal. An exceptional feature of the crystal is its narrow spectral linewidth. Here, we have studied parahydrogen molecule itself and molecules embedded in parahydrogen crystal by high-resolution spectropscopy. From the analysis of fine structures, frequency shifts and spectral lineshape of the rotation-vinbration transitions, we have investigated specific nature of excitons and its relaxation dynamics in the quantum crystal. Some of the results are summarized as follows. (1) The first overtone vibrational transition of parahydrogen has been studied by high-resoultion laser spectroscopy. The fine spliting was interpreted as due to vibron hopping in the quantum crystal. Also, the quantum effect on the vibron could be discussed.(2) Temperature dependence on the linewdith of methane embedded in parahydrogen reveals that pure dephasing is predominant as the cause of the relaxation at low temperatures, but the dependence was completely different from those in classical solids. Moreover the polulation relaxation was found to strongly depend on the shape of vibrational modes.(3) Infrared absorption of gamma-ray irradiated parahydrogen has been studied. Infrared absorption of hydrogen molecules induced by ions produced by the irradiation was analyzed quantitatively. We have developed a new method to detect ions selectively by applying external electric field to the crystal.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] Takamasa Momose: "Rovibrational States of a Tetrahedral Molecule in a Hexagonal Close Packed Crystal"Journal of Chemical Physics. 197・19. 7695-7706 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takamasa Momose: "Infrared Spectroscopic Study of Rovibrational States of Methane Trapped in Solid Parahydrogen"Journal of Chemical Physics. 197・19. 7707-7716 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takamasa Momose: "Impurity Molecules in Parahydrogen Crystal ; High Resolution Infrared Spectroscopy"Journal of Low Temperature Physics. 111・3. 469-474 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takamasa Momose: "Matrix Isolation Spectroscopy Using Solid Parahydrogen as the Matrix"Bulletin of Chemical Society of Japan. 71・1. 1-15 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takamasa Momose: "High Resolution Spectroscopy of Ions in γ-ray Irradiated Solid Parahydrogen"Physica B. 284・1. 387-388 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Takamasa Momose: "Sharp Spectral Lines Observed in gray Ionized Parahydrogen Crystals"Physical Review Letters. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 応地利明: "「風土と地域-衛星画像から」浜下武志 編『地域史とは何か』"山川出版社. 36 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 応地利明: "「マリ国におけるミレット農耕形態の諸類型と分布」川田順造 編『ニジェール川大湾曲部の自然と文化』"東京大学出版会. 45 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 応地利明: "「東アジアからの地理的世界認識」樺山紘一 編『岩波講座 世界歴史12』"岩波書店. 26 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 応地利明: "「東南アジアをどう捉えるか(2)インド世界から」坪内良博 編『〈総合的地域研究〉を求めて』"京都大学学術出版会. 37 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 月原敏博: "「インドの大都市圏と白い革命-ミルクの生産・加工・流通の発達-」成田孝三 編『大都市圏研究(下)』"大明堂. 24 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "Rovibrational States of a Tetrahedral Molecule in a Hexagonal Close Packed Crystal"Journal of Chemical Physics. 197. 7695-7706 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "Infrared Spectroscopic Study of Rovibrational States of Methane Trapped in Solid Parahydrogen"Journal of Chemical Physics. 197. 7707-7716 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "Impurity Molecules in Parahydrogen Crystal ; High Resolution Infrared Spectroscopy."Journal of Low Temperature Physics. 111. 469-474 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "Matrix Isolation Spectroscopy Using Solid Parahydrogen as the Matrix"Bulletin of Chemical Society of, Japan. 71. 1-15 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "High Resolution Spectroscopy of Ions in γ-ray Irradiated Solid Parahydrogen."Physica B. 284. 387-388 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Momose: "Sharp Spectral Lines Observed in γ-ray Ionized Parahydrogen Crystals"Physical Review Letters. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Hiromichi Hoshina: "Infrared Spectroscopic Study of Rovibrational States of Perdeuterated methane (CD_4)trapped in Parahydrogen Crystal"Journal of Chemical Physics. 110・12. 5728-5733 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Simon Tam: "High Resolution Infrared Absorption Spectra of Methane Molecules Isolated in Solid Parahydrogen Matrices"Journal of Chemical Physics. 111・9. 4191-4198 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Takamasa Momose: "High Resolution Spectroscopy of Ions in γ-ray Irradiated Solid Parahydrogen"Physica B. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] Mizuho Fushitani: "UV Photolysis of HI…CO_2 Complexes in Solid Parahydrogen: Formation of CO and H_2O"Journal of Physical Chemistry. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] Norihito Sogoshi: "High Resolution Infrared Absorption Spectroscopy of C_<60>Molecules and Clusters in Parahydrogen Solids"Journal of Physical Chemistry. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] Hiroyuki Katsuki: "Observation of Rovibrational Dephasing of Molecules in Parahydrogen Crystals"Physical Review Letters. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Momose: "Impurity Molecules in Parahydrogen Crystal: High Resolution Infrared Spectroscopy." Journal of Low Temperature Physics. 111・3. 469-474 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Momose et al.: "Tunneling chemical recations in solid parahydrogen: A case of CD_3+H_2→CD_3H+H at 5K." Journal of Chemical Physics. 108・17. 7334-7338 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Zhang et al.: "High-resolution infrared spectroscopy of the J=1 H_2 pair in parahydrogen crystals" Physical Review B. 58・1. 218-232 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Fushitani et: "Photoinduced reactions on methyl radical in solid parahydrogen." Journal of Chemical Physics. 109・15. 6346-6350 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Hoshina et al.: "Infrared spectroscopic study of rovibrational states of perdeuterated methane(CD_4)trapped in parahydrogen crystal." Journal of Chemical Physics. 110・12. in press (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Momose et: "Matrix-Isolation Spectroscopy Using Solid Parahydrogen as the Matrix: Application to High-resolution Spectrsocopy,Photochemistry,and Cryochemistry." Bulletin of the Chemical Society of Japan. 71・1. 1-15 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Momose: "Rovibrational states of a Tetrahedral Molecule in a Hexagonal Close Packed Crystal" Journal of Chemical Physics. 107・19. 7695-7706 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Momose et al.: "Infrared Spectroscopic Study of Rovibrational States of Methane Trapped in Solid Parahydrogen" Journal of Chemical Physics. 107・19. 7707-7716 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Momose et al.: "High Resolution Laser Spectroscopy of Methane clusters Trapped in Solid Parahydrogen" Journal of Chemical Physics. 107・19. 7717-7720 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Momose: "Impurity Molecules in Solid Parahydrogen" Journal of Low Temperature Physics. 108(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Momose et al.: "Tunneling chemical Reactions in Solid Parahydrogen ; A Case of CD_3+H_2→CD_3H+H at 5K" Journal of Chemical Physics. 108(印刷中). (1998)

    • Related Report
      1997 Annual Research Report

URL: 

Published: 1997-04-01   Modified: 2020-05-15  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi