Abstract

The millimeter- and submillimeter-wave spectrum of AuF in the X 1 Σ + state was observed by employing a source-modulated microwave spectrometer. The AuF molecule was generated in a free space cell by the sputtering reaction from a gold sheet lining the inner surface of a stainless steel cathode using a dc glow plasma of CF 4 and Ar. Rotational transitions in the highly excited vibrational states enabled to determine Dunham-type molecular constants by a least-squares fit. Other constants like dissociation energy D e, vibrational wavenumber ω e and its anharmonic term ω e x e were also derived from the obtained constants.

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