Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD

Chia Ching Chu, Wei Fung He, Rong Sin Lin, Yin Ji Li, Thou Jen Whang, Chin Chun Tsai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Stimulated emission pumping with fluorescence depletion spectroscopy is used to determine the NaD X 1Σ+ ground-state dissociation energy and its isotopic shift. A total of 230 rovibrational levels in the range 9 ≤ v″ ≤ 29 and 1 ≤ J″ ≤ 11 are observed, where v″ = 29 is about 50 cm-1 below the dissociation limit. Analysis of the highest five vibrational levels yields the dissociation energy De = 15 822 ± 5 cm-1 with a vibrational quantum number at dissociation vD = 31.2 ± 0.1. The energy difference in the well depth of this isotopologue with respect to that of NaH is δDe = De(NaH) - De(NaD) = -7 cm-1. A new set of Dunham coefficients is derived to fit all the observed energy levels to within the experimental uncertainty.

Original languageEnglish
Article number024301
JournalJournal of Chemical Physics
Volume147
Issue number2
DOIs
Publication statusPublished - 2017 Jul 14

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Spectroscopic determination of the ground-state dissociation energy and isotopic shift of NaD'. Together they form a unique fingerprint.

Cite this