Optical Stark spectroscopy of the (3,0) A1Σ+- X1Σ+ band system of barium sulfide, BaS

Chengbing Qin, Timothy Steimle

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2 Scopus citations


The R(0) and R(1) lines of the (3,0) A1Σ+- X1Σ+ band of the major isotopologue of barium sulfide, 138Ba32S, were recorded at high resolution (full width at half maximum ≅35 MHz) and at a field strength of up to 3100 V/cm. The observed Stark shifts were analyzed to produce permanent electric dipole moments, μ→el, of 10.765(8) D and 5.586(22) for the X 1Σ+ (v = 0) and A1Σ+ (v = 3) states, respectively. The relative values of μ→el for barium monoxide, BaO, and BaS are discussed.

Original languageEnglish (US)
Pages (from-to)1-3
Number of pages3
JournalJournal of molecular spectroscopy
Issue number1
StatePublished - Nov 2012


  • Barium sulfide (BaS)
  • Permanent electric dipole moment
  • Stark effect

ASJC Scopus subject areas

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


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