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Sub-femtosecond/attosecond pulse radiolysis study

Research Project

Project/Area Number 15206109
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionOsaka University

Principal Investigator

YOSHIDA Youichi  Osaka University, The Institute of scientific and Industrial Research, Professor, 産業科学研究所, 教授 (50210729)

Co-Investigator(Kenkyū-buntansha) TAGAWA Seiichi  Osaka University, The Institute of scientific and Industrial Research, Professor, 産業科学研究所, 教授 (80011203)
KOZAWA Takahiro  Osaka University, The Institute of scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (20251374)
SEKI Shuhei  Osaka University, The Institute of scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (30273709)
HONDA Yoshihide  Osaka University, The Institute of scientific and Industrial Research, Associate Professor, 産業科学研究所, 助教授 (40209333)
YANG Jinfeng  Osaka University, The Institute of scientific and Industrial Research, Assistant Professor, 産業科学研究所, 助手 (90362631)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥30,290,000 (Direct Cost: ¥23,300,000、Indirect Cost: ¥6,990,000)
Fiscal Year 2005: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2004: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2003: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
KeywordsUltrafast measurement / pulse radiolysis / femtosecond electron beam / attosecond electron beam / time-resolved spectroscopy / ultrafast reactions / double-decker electron beams / photocathode rf gun / 電子線励起時間分解吸収分光 / ダブルデッカー電子加速器 / フォトカソードRF電子銃加速器 / サブフェムト秒電子線励起時間分解吸収分光 / アト秒電子線連記時間分解吸収分光 / ダブルテッカー電子加速器 / サブフェムト秒電子パルス / アト秒電子線励起時間分解吸収分光
Research Abstract

(1)Development of double-decker femtosecond electron beam accelerator
A new concept of pulse radiolysis based on a double-decker electron beam accelerator was proposed for studying chemical kinetics and primary processes or reactions of radiation chemistry on sub-femtosecond and attosecond time scale. The double-decker electron beam accelerator was developed by a photocathode radio-frequency gun, and was used successfully to generate femtosecond synchronized double-decker electron beams. One of the two beams (front electron beam) will be converted to Cherenkov light as an analyzing source, while another (back electron beam) is used as a pump or irradiative electron bunch. Since the double bunches were generated in the photocathode rf gun by one laser, the time jitter between the electron beam and the analyzing light in the pulse radiolysis was reduced.
(2)New pulse radiolysis based on equivalent velocity spectroscopy
Furthermore, to reduce the degradation of time resolution caused by the … More velocity difference between the light and the electron beam in sample (g(L)), a new technique of "equivalent velocity spectroscopy (EVS)" was developed in pulse radiolysis. In EVS, the electron beam and the analyzing light were injected on the sample with an angle of θ, where cosθ=1/n (n is the refractive index of the sample). The shape of the electron bunch was rotated with the same angle of θ along the electron beam direction by adjusting the linac rf phase and magnetic fields in the bunch compressor. Consequently, the electron bunch and the laser pulse pass through the sample overlapping each other, resulting in g(L)=0. Moreover, the optical density in EVS is independent on the optical path length. The higher optical density was obtained at low-charge electron beam. The time resolution of the pulse radiolysis is expected to be improve into the femtosecond time region by using a low-charge femtosecond electron beam, such as a 98 fs electron beam with bunch charge of 0.17 nC produced in the presented photocathode rf gun linac. Less

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (43 results)

All 2006 2005 2004 2003 Other

All Journal Article (38 results) Book (1 results) Publications (4 results)

  • [Journal Article] Pulse radiolysis based on a femtosecond electron beam and a femtosecond laser light with double-pulse injection technique2006

    • Author(s)
      J.Yang, T.Kondoh, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Radiation Physics and Chemistry (in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Double-decker femtosecond electron beam accelerator for pulse radiolysis2006

    • Author(s)
      J.Yang, T.Kondoh, A.Yoshida, Y.Yoshida
    • Journal Title

      Review of Scientific Instruments 77(in press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalent Velocity Spectroscopy for Femtosecond Pulse Radiolysis2006

    • Author(s)
      T.Kondoh, J.Yang, T.Kozawa, S.Tagawa, Y.Yoshida
    • Journal Title

      Japanese Journal of Applied Physics (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Femtosecond single electron bunch generation by rotating longitudinal bunch phase space in magnetic field2006

    • Author(s)
      J.Yang, T.Kondoh, K.Kan, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A 556

      Pages: 52-56

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalent Velocity Spectroscopy for Femtosecond Pulse Radiolysis2006

    • Author(s)
      T.Kondoh, J.Yang, T.Kozawa, S.Tagawa, Y.Yoshida
    • Journal Title

      Japanese Journal of Applied Physics (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Femtosecond single electron bunch generation by rotating longitudinal bunch phase space in magnetic field2006

    • Author(s)
      J.Yang, T.Kondoh, K.Kan, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Nucl.Instr.and Meth.A 556

      Pages: 52-56

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Experimental Studies of Transverse and Longitudinal Beam Dynamics in Photoinjector2005

    • Author(s)
      J.Yang, T.Kondoh, Y.Yoshida, S.Tagawa
    • Journal Title

      Japanese Journal of Applied Physics 44

      Pages: 8702-8707

    • NAID

      10016959691

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Proton and anion distribution and line edge roughness of chemically amplified electron beam resist2005

    • Author(s)
      T.Kozawa, H.Yamamoto, A.Saeki, S.Tagawa
    • Journal Title

      Journal of Vacuum Science Technology B 23

      Pages: 2716-2720

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Basic Aspects of Acid Generation Process in Chemically Amplified Electron Beam Resist2005

    • Author(s)
      T.Kozawa, S.Tagawa
    • Journal Title

      Journal of Photopolymer Science and Technology., 18

      Pages: 471-474

    • NAID

      130004464438

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies2005

    • Author(s)
      A.Saeki, T.Kozawa, S.Kashiwagi, K.Okamoto, G.Isoyama, Y.Yoshida, S.Tagawa
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A 546

      Pages: 627-633

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Correlation between Edge Roughness of Nanostructures and Backbone Configuration of Polymer Materials2005

    • Author(s)
      S.Seki, S.Tsukuda, S.Tagawa, M.Sugimoto
    • Journal Title

      Journal of Photopolymer Science and Technology., 18

      Pages: 449-450

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Basic Aspects of Acid Generation Process in Chemically Amplified Electron Beam Resist2005

    • Author(s)
      T.Kozawa, S.Tagawa
    • Journal Title

      Journal of Photopolymer Science and Technology 18

      Pages: 471-474

    • NAID

      130004464438

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Correlation between Edge Roughness of Nanostructures and Backbone Configuration of Polymer Materials2005

    • Author(s)
      S.Seki, S.Tsukuda, S.Tagawa, M.Sugimoto
    • Journal Title

      Journal of Photopolymer Science and Technology. 18

      Pages: 449-450

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Experimental Studies of Transverse and Longitudinal Beam Dynamics in Photoinjector2005

    • Author(s)
      J.Yang, T.Kondoh, Y.Yoshida, S.Tagawa
    • Journal Title

      Jpn.J.Appl.Phys. 44

      Pages: 8702-8707

    • NAID

      10016959691

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Proton and anion distribution and line edge roughness of chemically amplified electron beam resist2005

    • Author(s)
      T.Kozawa, H.Yamamoto, A.Saeki, S.Tagawa
    • Journal Title

      J.Vac.Sci.Technol.B 23

      Pages: 2716-2720

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Basic Aspects of Acid Generation Process in Chemically Amplified Electron Beam Resist2005

    • Author(s)
      T.Kozawa, Seiichi Tagawa
    • Journal Title

      J.Photopolym.Sci.Technol. 18

      Pages: 471-474

    • NAID

      130004464438

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies2005

    • Author(s)
      A.Saeki, T.Kozawa, S.Kashiwagi, K.Okamoto, G.Isoyama, Y.Yoshida, S.Tagawa
    • Journal Title

      Nucl.Instrum.Meth.A 546

      Pages: 627-633

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Correlation between Edge Roughness of Nanostructures and Backbone Configuration of Polymer Materials2005

    • Author(s)
      S.Seki, S.Tsukuda, S.Tagawa, M.Sugimoto
    • Journal Title

      J.Photopolym.Sci.Technol. 18

      Pages: 449-450

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Modeling and simulation of chemically amplified electron beam, x-ray, and EUV resist processes2004

    • Author(s)
      T.Kozawa, A.Saeki, S.Tagawa
    • Journal Title

      Journal of Vacuum Science Technology B 22

      Pages: 3489-3492

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Adjacent Effect on Positive Charge Transfer from Radical Cation of n-Dodecane to Scavenger Studied by Picosecond Pulse Radioly sis, Statistical Model, and Monte Carlo Simulation2004

    • Author(s)
      A.Saeki, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Journal of Physics and Chemistry A 108

      Pages: 1475-1481

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application2004

    • Author(s)
      S.Tsukuda, S.Seki, A.Saeki, T.Kozawa, S.Tagawa et al.
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 3810-3814

    • NAID

      10013275865

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Polymer Screening Method for Chemically Amplified Electron Beam and X-Ray Resists2004

    • Author(s)
      H.Yamamoto, A.Nakano, K.Okamoto, T.Kozawa, S.Tagawa
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 3971-3973

    • NAID

      10013276391

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effects of Ester Groups on Proton Generation and Diffusion in Polymethacrylate Matrices2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tagawa
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 3981-3983

    • NAID

      10013276420

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Pulse Radiolysis Study on Proton and Charge Transfer Reactions in Solid Poly(methyl methacrylate)2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tagawa
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 4363-4367

    • NAID

      10013317792

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application2004

    • Author(s)
      S.Tsukuda, S.Seki, A.Saeki, T.Kozawa, S.Tagawa
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 3810-3814

    • NAID

      10013275865

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Effects of Ester Groups on Proton Generation and Diffusion in Polymethacrylate Matrices2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tawaga
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 3981-3983

    • NAID

      10013276420

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Pulse Radiolysis Study on Proton and Charge Transfer Reactions in Solid Poly(methyl methacrylate)2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tawaga
    • Journal Title

      Japanese Journal of Applied Physics 43

      Pages: 4363-4367

    • NAID

      10013317792

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Modeling and simulation of chemically amplified electron beam, x-ray, and EUV resist processes2004

    • Author(s)
      T.Kozawa, A.Saeki, S.Tagawa
    • Journal Title

      J.Vac.Sci.Technol. B22

      Pages: 3489-3492

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Adjacent Effect on Positive Charge Transfer from Radical Cation of n-Dodecane to Scavenger Studied by Picosecond Pulse Radiolysis, Statistical Model, and Monte Carlo Simulation2004

    • Author(s)
      A.Saeki, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      J.Phys.Chem. A108

      Pages: 1475-1481

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Precise Control of Nanowire Formation Based on Polysilane for Photoelectronic Device Application2004

    • Author(s)
      S.Tsukuda, S.Seki, A.Saeki, T.Kozawa, S.Tagawa et al.
    • Journal Title

      Jpn.J.Appl.Phys. 43

      Pages: 3810-3814

    • NAID

      10013275865

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Polymer Screening Method for Chemically Amplified Electron Beam and X-Ray Resists2004

    • Author(s)
      H.Yamamoto, A.Nakano, K.Okamo to, T.Kozawa, S.Tagawa
    • Journal Title

      Jpn.J.Appl.Phys. 43

      Pages: 3971-3973

    • NAID

      10013276391

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of Ester Groups on Proton Generation and Diffusion in Polymethacrylate Matrices2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tagawa
    • Journal Title

      Jpn.J.Appl.Phys. 43

      Pages: 3981-3983

    • NAID

      10013276420

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Pulse Radiolysis Study on Proton and Charge Transfer Reactions in Solid Poly(methyl methacrylate)2004

    • Author(s)
      A.Nakano, K.Okamoto, T.Kozawa, S.Tagawa
    • Journal Title

      Jpn.J.Appl.Phys. 43

      Pages: 4363-4367

    • NAID

      10013317792

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Subpicosecond Pulse Radiolysis Study of Geminate Ion Recombination in Liquid Benzene2003

    • Author(s)
      K.Okamoto, A.Saeki, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Chemical Letters 32

      Pages: 834-835

    • NAID

      10012819332

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Spatial Beam Profiles of Femtosecond X-ray Pulses Generated by Laser Compton Scattering from a Low-emittance Electron Beam2003

    • Author(s)
      M.Yorozu, J.Yang, Y.Okada, T.Yanagida, F.Sakai, S.Ito, A.Endo
    • Journal Title

      Applied Physics B 76

      Pages: 293-297

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Quantum Efficiencies of Mg Photocathode under Illumination with 3^<rd> and 4^<th> Harmonics Nd: LiYF4 Laser Light in RF Gun2003

    • Author(s)
      T.Nakajyo, J.Yang, F.Sakai, Y.Aoki
    • Journal Title

      Japanese Journal of Applied Physics 42

      Pages: 1470-1474

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Adjacent Effect on Positive Charge Transfer from Radical Cation of n-Dodecane to Scavenger Studied by Picosecond Pulse Radiolysis, Statistical Model, and Monte Carlo Simulation2003

    • Author(s)
      A.Saeki, T.Kozawa, Y.Yoshida, S.Tagawa
    • Journal Title

      Journal of Physics and Chemistry A 108

      Pages: 1475-1481

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Quantum Efficiencies of Mg Photocathode under Illumination with 3^<rd> and 4^<th> Harmonics Nd:LiYF4 Laser Light in RF Gun2003

    • Author(s)
      T.Nakajyo, J.Yang, F.Sakai, Y.Aoki
    • Journal Title

      Japanese Journal of Applied Physics 42

      Pages: 1470-1474

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 放射線化学のすすめ2006

    • Author(s)
      吉田 陽一 等
    • Total Pages
      268
    • Publisher
      学会出版センター
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] K.Okamoto: "Subpicosecond Pulse Radiolysis Study of Geminate Ion Recombination in Liquid Benzene"Chemical Letters. 32. 834-835 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Yorozu: "Spatial Beam Profiles of Femtosecond X-ray Pulses Generated by Laser Compton Scattering from a Low-emittance Electron Beam"Applied Physics. B76. 293-297 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Nakajyo: "Quantum Efficiencies of Mg Photocathode under Illumination with 3^<rd> and 4^<th> Harmonics Nd:LiYF4 Laser Light in RF Gun"Japanese Journal of Applied Physics. 42. 1470-1474 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] A.Saeki: "Adjacent Effect on Positive Charge Transfer from Radical Cation of n-Dodecane to Scavenger Studied by Picosecond Pulse Radiolysis, Statistical Model, and Monte Carlo Simulation"Journal of Physics and Chemistry A. 108. 1475-1481 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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