Physical Review A
Fine-structure measurements in the 6F2 and 7F2 states of rubidium by radio-frequency spectroscopy
John W. Farley, R. Gupta
Abstract
We have used radio-frequency spectroscopy in conjunction with a multistep optical excitation scheme involving a cw dye laser to measure the fine-structure intervals in the $6^{2}F$ and $7^{2}F$ states of Rb. We find that the fine-structure intervals $\ensuremath{\delta}w$ (in MHz) are $\ensuremath{\delta}w(6^{2}F)=\ensuremath{-}486(4)$ and $\ensuremath{\delta}w(7^{2}F)=\ensuremath{-}347.6(10)$.