title: High-accuracy measurement of the magnetic moment anomaly of the electron bound in hydrogenlike carbon.
abstract: We present a new experimental value for the magnetic moment of the electron bound in hydrogenlike carbon (12C5+): g(exp) = 2.001 041 596 (5). This is the most precise determination of an atomic g(J) factor so far. The experiment was carried out on a single 12C5+ ion stored in a Penning trap. The high accuracy was made possible by spatially separating the induction of spin flips and the analysis of the spin direction. The current theoretical value amounts to g(th) = 2.001 041 591 (7). Together experiment and theory test the bound-state QED contributions to the g(J) factor of a bound electron to a precision of 1%.
authors.affiliation: Gesellschaft fur Schwerionenforschung, 64291 Darmstadt, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Häffner
authors.forename: T
authors.initials: T
authors.lastname: Beier
authors.forename: N
authors.initials: N
authors.lastname: Hermanspahn
authors.forename: H J
authors.initials: HJ
authors.lastname: Kluge
authors.forename: W
authors.initials: W
authors.lastname: Quint
authors.forename: S
authors.initials: S
authors.lastname: Stahl
authors.forename: J
authors.initials: J
authors.lastname: Verdú
authors.forename: G
authors.initials: G
authors.lastname: Werth