The Na2 23Δg state: CW perturbation-facilitated optical-optical double resonance spectroscopy

Thou-Jen Whang, A. Marjatta Lyyra, William C. Stwalley, Li Li

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20 Citations (Scopus)


The Na2g3s)(4dδg) 23Δg state has been studied by CW sub-Doppler perturbation-facilitated optical-optical double resonance (PFOODR) spectroscopy. Twenty-three vibrational levels have been observed with resolved fine-hyperfine structure. The fine-hyperfine coupling scheme of the 23Δg state is exactly the same as the Na2g3s)(3dδg) 13Δg: case bβs coupling with Fermi contact constant b = 221.7 MHz. Absolute vibrational numbering of the 23Δg state has been determined from the PFOODR fluorescence to the b3Πu state. The Dunham coefficients were then derived and the corresponding RKR potential curve was determined.

Original languageEnglish
Pages (from-to)505-511
Number of pages7
JournalJournal of molecular spectroscopy
Issue number2
Publication statusPublished - 1991 Jan 1

All Science Journal Classification (ASJC) codes

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

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