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Microwave Spectroscopy of Carbon-chain Molecules by Laser Evaporation

Research Project

Project/Area Number 03640426
Research Category

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

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

Principal Investigator

YAMAMOTO Satoshi  Dept. of Physics, Nagoya Univ. Research Associate, 理学部, 助手 (80182624)

Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsMicrowave Spectrum / Laser Evaporation / Transient Species / レ-ザ蒸発 / 星間分子 / フリ-ラジカル
Research Abstract

An apparatus for laser evaporation has been developed to measure the microwave spectrum of transient species such as free radicals and molecular ions. For this purpose, a stainless-steel vacuum chamber evacuated by an oil diffusion pump (7000 1/s) is constructed. This apparatus is combined with a Fourier transform microwave spectrometer newly developed. The sensitivity tests are carried out by observing the J=1-0 line of various isotopic species of OCS. The line of ^<18>O^<13>CS whose abundance is 0.002 % is easily observed with accumulation of 1000 shots. An optical system for laser evaporation by the ArF laser is now being built. After completion this, we will be able to measure the microwave spectra of transient species produced by laser evaporation.

Report

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

    (14 results)

All Other

All Publications (14 results)

  • [Publications] S.Yamamoto: "The microwave spectrum of the CH_2N radical in the X^2B_2 ground electronic state" J.Chem.Phys.96. 4157-4162 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Suzuki: "A survey of CCS,HC_3N,HC_5N,and NH_3 toward dark clouds cores and their production chemistry" Astrophys.J.392. 551-570 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Yamamoto: "SiO in Rarnard l" Publ.Astron.Soc.Japan. 44. 459-467 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] F.Lovas: "Microwave spectra and electric dipole moments for low-J levels of interstellar radicals:SO,C_2S,C_3S,c-HC_3,CH_2CC,and c-C_3H_2" Astrophys.J.399. 325-329 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Yamamoto and S.Saito: "The microwave spectrum of the CH_2N radical in the X^2B_2 ground electronic state" J. Chem. Phys.96. 4157-4162 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Suzuki, S.Yamamoto, M.Ohishi, N.Kaifu, S.Ishikawa, Y.Hirahara, and S.Takano: "A survey of CCS, HC_3N, HC_5N, and NH_3 toward dark cloud cores and their production chemistry" Astrophys. J.392. 551-570 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Yamamoto, H.Mikami, S.Saito, N.Kaifu, M.Ohishi, and K.Kawaguchi: "SiO in Barnard 1" Publ. Astron. Soc. Japan. 44. 459-467 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] F.Lovas, R.D.Suenram, T.Ogata, and S.Yamamoto: "Microwave spectra and electric dipole moments for low-J levels of interstellar radicals: SO,C_2S, C_3S, c-HC_3, CH_2CC, and c-C_3H_2" Astrophys. J.399. 325-329 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Yamamoto: "The microwave spectrum of the CH_2N radical in the X^^〜^2B_2 ground electronic state" J.Chem.Phys.96. 4157-4162 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Suzuki: "A survey of CCS,HC_3N,HC_5N,and NH_3 toward dark clouds cores and their production chemistry" Astrophys.J.392. 551-570 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] S.Yamamoto: "SiO in Barnardl" Publ.Astron.Soc.Japan. 44. 459-467 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] F.Lovas: "Microwave spectra and electric dipole moments for low-J levels of interstellar radicals: SO,C_2S,C_3S,c-HC_3,CH_2CC,and c-C_3H_2" Astrophys.J.399. 325-329 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Satoshi Yamamoto: "Laboratory Observation of the ^3P_1ー ^3P_0 Transition of the Neutral Carbon Atom by Submillimeter Absorption Spectroscopy" Astrophysical Journal. 370. L103-L105 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Masataka Mizushima: "Microwave Absorption Lines of ^<16>O^<18>O in Its(X^3Σg^-,υ=0)State" Journal of Molecular Spectroscopy. 148. 447-452 (1991)

    • Related Report
      1991 Annual Research Report

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

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