Hyperfine resolved electronic spectra of gold monosulfide, AuS, were recorded in the near-infrared. A Ti:sapphire, continuous-wave ring laser was used to analyze gaseous AuS molecules produced in a hollow cathode discharge. Hyperfine resolution was achieved using the sub-Doppler technique of intermodulated fluorescence. Rotational transition frequencies within the (0,0), (1,0), and (2,0) vibrational bands of the a4Σ- - X2Πi transition were recorded. A least squares fit of these transition frequencies was used to determine the term energy and rotational parameters of the a state, as well as values for the Frosch and Foley parameters and the quadrupole coupling constant. A reduced term-value plot for the (0,0) band was created for transitions up to J = 40.

Hyperfine analysis and global fitting of near-infrared electronic spectra of AuS

253rd National Meeting (2017)

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