Dissociation energy of the ground state of NaH

Hsien Yu Huang, Tsai Lien Lu, Thou Jen Whang, Yung Yung Chang, Chin Chun Tsai

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17 Citations (Scopus)


The dissociation energy of the ground state of NaH was determined by analyzing the observed near dissociation rovibrational levels. These levels were reached by stimulated emission pumping and fluorescence depletion spectroscopy. A total of 114 rovibrational levels in the ranges 9≤ v″ ≤21 and 1≤ J″ ≤14 were assigned to the X σ1 + state of NaH. The highest vibrational level observed was only about 40 cm-1 from the dissociation limit in the ground state. One quasibound state, above the dissociation limit and confined by the centrifugal barrier, was observed. Determining the vibrational quantum number at dissociation vD from the highest four vibrational levels yielded the dissociation energy De =15 815±5 cm-1. Based on new observations and available data, a set of Dunham coefficients and the rotationless Rydberg-Klein-Rees curve were constructed. The effective potential curve and the quasibound states were discussed.

Original languageEnglish
Article number044301
JournalJournal of Chemical Physics
Issue number4
Publication statusPublished - 2010 Jul 28

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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