Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 27: Precision spectroscopy of atoms and ions I (with Q)

A 27.5: Vortrag

Mittwoch, 2. März 2016, 15:45–16:00, f428

Influence of ion movement in a particle trap on the bound-electron g-factor — •Niklas Michel, Jacek Zatorski, and Christoph H. Keitel — Max-Planck-Institut für Kernphysik, Heidelberg, Deutschland

The bound-electron g-factor is defined via the energy difference of a spin-up and spin-down state of the electron in an external magnetic field and its measurement provides one of the most stringent tests of QED in strong external fields. When measured in a Penning trap, the electron spin also couples to the external electric trapping potential and the total momentum of the ion. Therefore, the motional state of an ion in a particle trap influences measurements of internal observables such as energy levels or the g-factor [1]. We calculated the resulting relativistic shift of the Larmor frequency and the corresponding g-factor correction for a bound electron in a hydrogenlike ion in the 1S state due to the ion moving in a Penning trap.
[1] N. Michel, J. Zatorski, C. H. Keitel, Phys. Rev. A 92, 052509 (2015).