Spectroscopic Study of the Na2 23Σ+g State by cw Perturbation-Facilitated Optical-Optical Double-Resonance Spectroscopy

T. J. Whang, C. C. Tsai, W. C. Stwalley, A. M. Lyyra, Li Li

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23 Citations (Scopus)


The Na2(3sσg)(4sσg) 23Σ+g state of Na2 has been observed and studied by cw perturbation-facilitated optical-optical double-resonance (PFOODR) spectroscopy for the first time. A single-mode dye laser and a Ti-sapphire laser served as the pump and the probe lasers, respectively. A total of 543 PFOODR excitation signals have been assigned to the 23Σ+g ← b3Π1u transitions. Absolute vibrational numbering was determined by counting nodes in the 23Σ+g → a3Σ+u bound-free spectra. Spectroscopic constants and the corresponding RKR potential energy curve are presented in this vsork. The values of Te, Re, and De, are found to be 25 551.237(49) cm-1, 3.53463(35) Å, and 6211.5(1) cm-1 respectively.

Original languageEnglish
Pages (from-to)411-421
Number of pages11
JournalJournal of molecular spectroscopy
Issue number2
Publication statusPublished - 1993 Aug

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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