High-precision laser and rf spectroscopy of atomic, molecular, and slow ion beams

We have obtained extensive new structural information on the light diatomic radical ScO since the last report in this series. The new studies complete our systematic investigation of the fine and hyperfine structure (hfs) of the group IIIa monoxides LaO, YO, and ScO. The studies of the molecular X 2Σ+ electronic ground state were carried out using the molecular-beam laser-rf double-resonance method, and the excited electronic state information was obtained by complementing this data with Doppler-free laser fluorescence studies