%0 Generic
%A Brantjes, Nicolaas Petrus Marcus
%D 2012
%F heidok:13498
%K Penning Trap , g-Factor , QED , Precision , Physics
%R 10.11588/heidok.00013498
%T The g-Factor of Hydrogen-Like Heavy Ions as a Test for QED
%U https://archiv.ub.uni-heidelberg.de/volltextserver/13498/
%X This thesis describes the design and construction of an experiment to test quantum electrodynamics (QED) in the presence of strong electromagnetic fields. The g-factor of a charged particle is a dimensionless constant. It relates the particle’s magnetic moment to its angular momentum and as such it determines the strength of the interaction between the particle and the magnetic field. In the case of an electron bound in the field of a heavy nucleus, the g-factor is predicted to great accuracy by bound-state quantum electrodynamics (BS-QED). Thus, the accurate determination of the g-factor of an ion inside a Penning trap serves as a stringent test of BS-QED. A bunch of heavy highly-charged ions are created and decelerated at the GSI-HITRAP facility. The bunch is finally captured and cooled to 4 Kelvin inside the Cooler trap. The cold ions are transported and injected into the g-factor Penning trap. Here the g-factor is determined using laser-microwave double-resonance spectroscopy. Presently, electron trapping is possible inside the Cooler trap and the trap is being prepared to trap ions.