Abstract
Atomic spin precessions in isolated fluorine ions on recoil through weak transverse magnetic fields have been observed for studying the complex hyperfine interactions of multi-electron configurations. The method is illustrated using the long-lived 197 keV 19F( 5 2 + ) state as probe. The measured precessions were found to vary linearly with the applied magnetic field integrated over the flight path of the recoiling ions. The data are well accounted for, assuming configurations from the coupling of 2s and 2p electrons in the relevant ionic charge states. The application of this method to the detection of polarization pick-up from a ferromagnetic surface is discussed.
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