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Spectroscopic Study on Non-Fluorescent Radicals and Reaction Dynamics of Rare-Gas Metastables with Molecules

Research Project

Project/Area Number 03453022
Research Category

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

Allocation TypeSingle-year Grants
Research Field 構造化学
Research InstitutionKyushu University

Principal Investigator

NISHIMURA Yukio  Kyushu University, Institute of Advanced Material Study, Profrssor, 機能物質科学研究所, 教授 (50038577)

Co-Investigator(Kenkyū-buntansha) SEKIYA Hiroshi  Kyushu University, Institute of Advanced Material Study, assistant, 機能物質科学研究所, 助手 (90154658)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsSpectroscopy / Radicals / Multiphoton Ionization / Reaction Dynamics / Rare-gas Metastables / 非発光ラジカル / 非線形分光 / 非発光ラシカル
Research Abstract

Spectroscopic study has been perfomed for the detection of non-fluo-rescent radicals, in order to clarify the reaction dynamics of rare-gas metastables with molecules. Discharge sources for generation of rare-gas metastables and the reaction chamber were differentially pumped. The radicals produced by the reactions were ionized via resonant enhanced multiphoton ionization (REMPI) and were detected by the time-of-flight mass spectrometer (Reflectron). Exicimer laser (XeCl) pumped dye laser was used for REMPI.Two types of discharge sources, a holow cathode discharge and pulsed discharge were used. The first experiments were carried out by using the former discharge souurce. REMPI spectra of benzene, tropolone and water molecules were measured for examining the sensitivity of the apparatus. We have attempted to observe (2+1) and (3+1) REMPI spectra of CH_2 and CH_2 radicals which are produced from reactions (1) and (2), respectively, Ar(^3P_<2,0>)+CH_4->CH_3+H+Ar (1) ->CH_2+H_2(2H)+Ar (2). However, we did not succeed in observing REMPI spectra. Then, we have changed the discharge source to the pulsed type. Argon metastable atoms were produced in higher concentration compared with the hollow cathode discharge source. Measurement of REMPI spectra of CCl radical was carried out for reaction of Ar(^3P_<2,0>) with CCl_4. We have tried to enhance the sensitivity of the new apparatus.
Furthermore, we detetermined the cross sections for the formation of diatomic radcals in their clectronic ground states which were produced from the reactions of Ar(^3P_<2.0>) with CH_4, halomethanes and silanes.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Y.Nishimura: "Reactions of Argon Metastables with Fluoromethanes" Atomic Collision Research in Japan. 60-61 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Sekiya: "Proton Tunneling in Tropolone-Rg(Rg=Ar,Kr,Xe)van der Waals Complexes" Chemical Physics Letters. 215. 499-504 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Nishimura: "Reactions of Argon Metastables with Fluoromethanes" Atomic Collision Res. Jpn.(19). 60-61 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Sekiya: "Proton Tunneling in Tropolone-Rg(Rg=Ar, Kr, Xe) van der Waals Complexes" Chem. Phys. Lett.215, (5). 499-504 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yukio Nishimura: "Reactions of Argon Metastables with Fluoro me thranes" Atomic Collision Research in Japan. 60-61 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Hiroshi Sekiya: "Proton Tunneling in Tropolove-Rg(Rg=Ar、Kr、Xe)van der Waals" Chencical Physics Letters. 215. 499-504 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 関谷 博: "New electronic emission of SiCl_2" Chemical Physics Letters. 176. 477-481 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 西村 幸雄: "励起原子による分子の励起・解離過程" 九州大学機能物質科学研究所報告. 4. 89-96 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 辻 正治: "Rovibrational distributions of CH(A^2)produced in energy-transfer reactions from Ar(^3P_2),Kr(^3P_2),and Xe(^3P_2)atoms to C_2H_5 radicals" The Journal of Chemical Physics. 96. 6746-6751 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 関谷 博: "New electronic emission from SiCl_2" Chemical Physics Letters. 176. 477-481 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西村 幸雄: "励起原子による分子の励起・解離過程" 九州大学機能物質科学研究所報告. 4. 89-96 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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