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Measurement of the absolute cross sections for the electron collosion excitation of metastable states of rare-gases using a high-sensitivity FM-absorption methdo

Research Project

Project/Area Number 60550021
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物理計測・光学
Research InstitutionKyoto Institute of Technology

Principal Investigator

TACHIBANA Kunihide  Kyoto Institute of Technology, Professor, 工芸学部, 教授 (40027925)

Co-Investigator(Kenkyū-buntansha) HARIMA Hiroshi  Kyoito Institute of Technology, Assistant Professor, 工芸学部, 助教授 (00107351)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1987: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1986: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1985: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsExcitation Coefficients of Rare-Gases / Electron Collision Cross Sections / Electron Swarm Method / Laser Absorption Method / 稀ガスのスペクトル線形状 / 希ガス / 励起係数 / 電子スウォーム法
Research Abstract

A sensitive and accurate method has been developed for the detection of the excited rare-gas atoms in the metastable and resonance levels using a diode laser as a tunable light source for the absorption measurement. Then, the hyperfine structures and line shapes of the absorption spectral lines of Ar, Kr, and Xe have been analyzed by scanning the wavelength of the laser and the collision broadening- and shift-coefficients have been derived, which are necessary for the derivation of the absolute densities of the excited atoms from the line absorption data.
On the other hand, a set up for the electron swarm experiment has been constructed by improving the electron drift-tube equipped with an ultra-high vacuum system which can supply relatively high and stable photo-current for a long period. By compbining the drift-tube and the laser absorption technique we have measured the excitation coefficients for the metastable and resonance levels of Ne, Ar, Kr, and Xe as functions of the ratio of the electric field strength to the gas density.
The measured excitation coefficients have been compared with the calculated results obtained from the Boltzmann equation analysis using a trial set of cross sections for each rare-gas. From the comparison absolute values of the cross sections for the excited levels have been determined.
As for the application of the obtained excitation coefficients or the cross sections, we have tried to use those values in the simulations of gas discharges in mixtures of rare-gases with other gases which are used, e.g., for the plasma display for a color TV and the plasma CVD for the preparation of various thin films.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 橘邦英: 放電研究. 107. 24-36 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K.Tachibana: Physical Review A. 34. 1007-1015 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] H.Harima: Physical Review A. 35. 109-115 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K.Tachibana: Physical Review A. 36. 999-1007 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K. Tachibana: "Measurement of the excitation coefficents of rare-gases using an electron-swarm echnique (in Japanese)" Houdenkenkyuu. No.107. 24-36 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K. Tachibana: "Exitation of the 1s_5, 1s_4, 1s_3, and 1s_2levels of agron by low-energy electrons" Physical Review A. 34. 1007-1015 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] H. Harima: "Collision broadening of the Sr-ion resonance line from the line core to the near-wing region" Physical Review A. 35. 109-115 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K. Tachibana: "Exitation of the 1s_5 and 1s_4 levels of neon by low-energy electrons" Physical Review A. 36. 999-1007 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K.Tachibana: Physical Review A. 34. 1007-1015 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] H.Harima: Physical Review A. 34. 2911-2919 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Tachibana: Journal of Physics D:Applied Physics. 20. 28-35 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] H.Harima: Physical Review A. 35. 109-115 (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] K.Tachibana: Physical Review A. 35. (1987)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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