Date: 27 Mar 2012

Experimental g factor of hydrogenlike silicon-28

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The g factor of the electron bound in hydrogenlike 28Si13+ has been measured to 10 significant digits. The value agrees very well with bound-state quantum-electrodynamical calculations and represents to date the most stringent test of the theory. The experiment uses a single ion confined in a triple Penning trap. Here we present details of the setup, the experimental procedure and the data evaluation.