Abstract
The 6-6 magnetic dipole resonance transition in has been observed by cw laser excitation of an ion cloud stored in a Paul trap and subsequent detection of the fluorescence radiation. From the hyperfine-structure splitting of the spectrum we determine the A factor for the ground state, A()=12.967(13) GHz, and the excited state, A()=0.580(3) GHz. From a contamination of in our sample we derived the isotope shift [Δν=311(14) MHz]. A small electric quadrupole admixture giving rise to a ΔF=2 component in the spectrum has been determined to be 6.4(0.5)% of the total transition amplitude.
- Received 22 November 1991
DOI:https://doi.org/10.1103/PhysRevA.46.327
©1992 American Physical Society