Optical-optical double resonance spectroscopy of the 4 1Σ g+ "shelf" state of Na2 using an ultrasensitive ionization detector

Chin Chun Tsai, John T. Bahns, He Wang, Thou Jen Whang, William C. Stwalley

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20 Citations (Scopus)


The 4 1Σg+ "shelf" state of Na2 was extensively investigated using optical-optical double resonance spectroscopy and an ultrasensitive ionization detector. A total of 179 vibrational levels-(0≤v≤127 are from previous work by using filter-photomultiplier tube fluorescence detection) were observed in this state, which covered more than 99.8% of the well depth. The Rydberg-Klein-Rees (RKR) potential energy curve was constructed with maximum outer turning point R 178+ = 17.60 Å. The comparison of the long range portion of the RKR potential energy curve and the potential curve calculated from V(R) = ΣnCn/Rn is discussed. Avoided crossings around the shelf with the 3 1Σg+ state and near dissociation with the 5 1Σg+ state are also discussed.

Original languageEnglish
Pages (from-to)25-30
Number of pages6
JournalThe Journal of Chemical Physics
Issue number1
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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