Attenuations and atomic spin precessions of γ-angular correlations for Coulomb excited 19F nuclei in single-electron ions

Attenuated γ-angular correlations and atomic spin precessions were measured for single-electron fluorine ions recoiling through vacuum in weak transverse magnetic fields. The Coulomb excited long-lived 19F(5/2+) state at 197 keV was used as probe. The angular correlations observed in the focal coordinate system of the Coulomb excitation process as well as the spin precessions in weak external fields are well explained with simple electron configurations associated with the highly stripped ions. (orig.)