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Dynamics of Predissociation and Atom-Molecule Collision, and the Effects of Magnetic Field

Research Project

Project/Area Number 60470014
Research Category

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

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

Principal Investigator

KATO Hajime  Kobe University, Professor, 理学部, 教授 (60030780)

Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 1986: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1985: ¥4,700,000 (Direct Cost: ¥4,700,000)
KeywordsPredissociation / Photodissociation / Laser / Zeeman effect / Magnetic field / Alkali metal / Fluorescence / エネルギー移動
Research Abstract

A preferential population of the magnetic sublevels of the atomic fragment Na(3 <^2P_(3/2)> ), which arises from the direct photodissociation through the D <^1(PI)> state of the Nak molecule, has been observed. The results are explained by assuming the separability of electronic and nuclear motion during the dissociation.
The population of the magnetic sublevels of Rb(5 <^2P_(3/2)> ) atoms produced by predissociation of the C <^1(PI)_u> state of the <Rb_2> molecule through the repulsive molecular state c <^3> SIGMA <(_u^+)> has been determined from the Zeeman spectra of the emission Rb(5 <^2P_(3/2)> - 5 <^2S_(1/2)> ). The observed results are interpreted by including the spin-orbit coupling between an excited level of the C <^1(PI)_u> state and levels of the c <^3> SIGMA <(_u^+)> state and the effect of the external magnetic field.
We measured the picosecond time-resolved fluorescence of the <Cs_2> molecule excited by a laser line of 15841 <cm^(-1)> by changing the vapor pressure. From the consideration of the rise and decay rates of the fluorescence intensities, the kinetic pathways of the collisional energy transfer were estimated. The intensity of the fluorescence d <^3(PI)_u> - X <^1> SIGMA <(_g^+)> was found to decrease appreciably in the presence of an external magnetic field, and it is ascribed to the predissociation.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 加藤肇: Faraday Discussions of the Chemical Society. 82. 1-12 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 加藤肇: The Journal of Chemical Physics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 加藤肇: 分光研究. 35. 203-217 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 田中真二: The Journal chemical Physics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 横山和重: The Journal Chemical Physics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hajime Kato: "Preferential Population of Magnetic Sublevels of Photodissociated Atoms" Faraday Discussions of the Chemical Society. 82. 1-12 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hajime Kato: "Dynamics of <Cs_2> excited by a Synchronously Pumped Mode-locked Dye Laser, and the Effects of Magnetic Field" The Journal of Chemical Physics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hajime Kato: "Molecular Structure and Dynamics of Alkali Metal Molecules" Journal of the Spectroscopical %society of Japan. 35. 203-217 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Shinji Tanaka: "High-resolution Laser Spectroscopy of Alkali Diatomic Molecules <I> . <K_2> B <^1(PI)_u> " The Journal of Chemical Physics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Kazushige Yokoyama: "High-resolution Laser Spectroscopy of Alkali Diatomic Molecules <II> . <Cs_2> d <^3(PI)_u> state and the predissociation" The Journal of Chemical Physics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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

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