Abstract
The near-infrared electronic transition of silver monosulfide, AgS was measured for the first time using mass-resolved 1+1′ resonance enhanced ionization spectroscopy in the 10000–11000cm−1 region. The observed vibronic bands were analysed to obtain ωe″=331.6(2)cm-1 and ωexe″=1.3(1)cm-1 for the ground state, and Te=10528.3(2)cm-1,ωe′=318.4(1)cm-1, ωexe′=1.4(1)cm-1 for the excited state of 107Ag32 S. The transitions are assigned to the A2Σ+–X2Πi system based on the rotational analysis of the Ω″=3/2 spin–orbit component of the 0–0 and 1–0 vibronic bands. The rotational constants for the X2Π state were determined to be B″=0.13126(16)cm-1 , D″=5.5(17)×10-7cm-1and A″=-477(8)cm-1 .
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