[paper] g Factor of Hydrogenlike 28Si13+

g Factor of Hydrogenlike 28Si13+

S. Sturm et al.

doi: 10.1103/PhysRevLett.107.023002

We determined the experimental value of the g factor of the electron bound in hydrogenlike 28Si13+ by using a single ion confined in a cylindrical Penning trap. From the ratio of the ion’s cyclotron frequency and the induced spin flip frequency, we obtain g=1.995 348 958 7(5)(3)(8). It is in excellent agreement with the state-of-the-art theoretical value of 1.995 348 958 0(17), which includes QED contributions up to the two-loop level of the order of (Zα)2 and (Zα)4 and represents a stringent test of bound-state quantum electrodynamics calculations.

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