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Elucidation of Molecular Origin of Ozone Deficit

Research Project

Project/Area Number 09044110
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research Field Physical chemistry
Research InstitutionOkazaki National Research Institutes

Principal Investigator

SUZUKI Toshinori  Okazaki National Research Institutes , Institute for Molecular Science , Associate Professor, 分子科学研究所, 助教授 (10192618)

Co-Investigator(Kenkyū-buntansha) TOUMI Ralf  Imperial College London, Lecturer, 講師
HOUSTON Paul  Cornell University, Professor, 教授
KOHGUCHI Hiroshi  Okazaki National Research Institutes, Institute for Molecular Science, Research Associate, 分子科学研究所, 助手 (40311188)
VASYUTINSKII Oleg  Ioffe Institute, 主任研究員
PAVLOV Lubomir  Bulgarian Academy of Sciences, Institute of Electronics, Professor, 教授
PAVLOV Lubom  ブルガリア科学アカデミー, エレクトロニクス研究所, 教授
岩田 末廣  岡崎国立共同研究機構, 分子科学研究所, 教授 (20087505)
VASYUTINSKII  イオフ物理研究所, 主任研究員
HOUSTON Paul  コーネル大学, 教授
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1998: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1997: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsOzone deficit / Oxygen / Vibrationally - excited molecules / 光電子 / フェムト秒 / ピラジン / 光分解 / 欠損 / 成層圏
Research Abstract

We have speculated that the ozone deficit is caused by ozone production via the reaction of vibrationally - excited oxygen molecule with surrounding oxygen molecule at the ground state . In order to examine this possibility , we mapped out the yield of highly vibrationally - excited oxygen molecules produced by photodissociation of Ozone in the Hartley band . The yield thus measured has been utilized in three dimensional atmospheric model calculation to demonstrate the possibility of this channel as the source of Ozone deficit . On the other hand , recent quantum chemical calculations show , although not yet concluded , that the rapid disappearance of vibrationally - excited oxygen molecule is not chemical reaction but to vibrational relaxation . This suggests that we need to look for other potential source of Ozone deficit more extensively . One possibility is that there exist unexplored feature in the reaction of O (1D) with hydrides in the stratosphere . In order to address this problem , we have constructed a new crossed molecular beam apparatus with high resolution imaging detector . The developed apparatus allows us to study the reaction of interest in much shorter time than before , acceleration investigation of reactions relevant to atmospheric problems .

Report

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

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Yonekura et al.: "A crossed molecular beam apparatus using high resolution ion imaging"Review of Scientific Instruments. 70. 3265-3270 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Suzuki et al.: "Femtosecond time-resolved photoelectron imaging on ultrafast electronic dephasing in an isolated molecule"Journal of Chemical Physics. (in press). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Suzuki et al.: "Nonadiabatic bending dissociation in 16 valence electron system OCS"Journal of Chemical Physics. 109. 5778-5793 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Williams and Toumi: "The radiative-dynamical effects of high cloud on global Ozone distribution"Journal of Atmospheric Chemistry. 33. 1-22 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yuxiang Mo and Toshinori Suzuki: "Quantal and semiclassical analysis of vector correlation in molecular photodissociation"Journal of Chemical Physics. 108. 6780-6789 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yuxiang Mo and Toshinori Suzuki: "Geometrical factors of two - photon absorption for the determination of alignment and orientation"Journal of Chemical Physics. 108. 4691-4692 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshinori Suzuki, Hideki Katayanagi, Shinkoh Nanbu, and Mutsumi Aoyagi: "Non-adiabatic bending dissociation in 16 valence electron system OCS"Journal of Chemical Physics. 109. 5778-5794 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yang Shi and Toshinori Suzuki: "Formation of metastable triplet acetylene from the A ('AィイD2uィエD2)) state near the dissociation threshold"Journal of Physics Chemistry A. 102. 7414-7419 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yuxiang Mo, Hideki Katayanagi, and Toshinori Suzuki: "Probing alignment of NO (XィイD12ィエD1II) by [2+1] REMPI via CィイD12ィエD1II state : a test of semiclassical theory in 355 nm photodissociation of NOィイD22'ィエD2"Journal of Chemical Physics. 110. 2029-2041 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshinori Suzuki and Nobuhisa Hashimoto: "Predissociation of acetylene from the A ('AィイD2uィエD2 ) state studies by absorption, LIF, and H-atom action spectrocopies"Journal of Chemical Physics. 110. 2042-2050 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Nobuaki Yonekura, Christian Gebauer, Hiroshi Kohguchi, and Toshinori Suzuki: "A crossed molecular beam apparatus using high-resolution ion imaging"Review of Scientific Instruments. 70. 3265-3270 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yonekura et al.: "Acrossed molecular beam apparatus with a high resolution ion imaging apparatus" Review of Scientific Instruments. in press.

    • Related Report
      1998 Annual Research Report
  • [Publications] Suzuki et al.: "Femtosecond Time-Resolved Photoelectron Imaging" Faraday Discussion of Chemical Society. in press.

    • Related Report
      1998 Annual Research Report
  • [Publications] R.J.Wilson, J.A.Mueller, P.L.Houston: "Speed dependent anisotropy parameter in the UV photodissociation of Ozone" Journal of Chemical physics. 101. 7593-7599 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] B.Y. Chang et al.: "Improved 2D product imaging" Rev. Sci. Inst.(in press).

    • Related Report
      1997 Annual Research Report
  • [Publications] T. Shibata et al.: "Detection of metastable CH_3CO radical by subpicosecond time-resolved photofragment imaging" Journal of physical chemistry. (in press.).

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Suzuki et al.: "Detection of metastable tripletacetylene produced by intersystem crossing from excited A(A^1)state" Journal of Chemical physics. 106. 5292-5295 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Tonokura et al.: "C-Cl bond rupture in ultraviolet photodissociation of Vinyl Chloride" Journal of physical chemistry. 101. 7754-7764 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] D.J.Lary, R.Toumi: "Halogen-catalized methane oxidation" J.Geophys.Res.102. 23421-23428 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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