An optical–optical double resonance spectroscopy of Br2: Observation of the 1<i>g</i>(3<i>P</i>2) ion-pair state

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<jats:p>We report the first observation of the 1g(3P2) ion-pair state of Br2 by the optical–optical double resonance technique. This state is accessible from the ground state stepwisely in the pump–probe excitation scheme, 1g(3P2) –A 3Π(1u) –X 1Σ+g. The double resonance transitions were interpreted on the basis of the optical selection rules. Emission spectra of the 1g(3P2) –A 3Π(1u) system were interpreted to establish the absolute v′ numbering of the ion-pair state from the Franck–Condon factor calculations. Observations were made on the v′=0 through v′=10 levels of the 79Br2 isotope species. The molecular parameters obtained are Te =49 390.364(16), ωe =151.704(10), ωexe =0.4169(24), ωeye =4.7(16)×10−4, Be =0.042 1840(73), αe =1.5209(61)×10−4, De =1.32(10)×10−8, and q=4.91(19)×10−5 (all in cm−1 with 3σ in parentheses).</jats:p>

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Details 詳細情報について

  • CRID
    1870583643143714432
  • DOI
    10.1063/1.453720
  • ISSN
    10897690
    00219606
  • Data Source
    • OpenAIRE

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