Erlangen 2018 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 33: Poster Session II

A 33.12: Poster

Mittwoch, 7. März 2018, 16:15–18:15, Redoutensaal

The g-factor of highly charged ions — •Halil Cakir, Bastian Sikora, Vincent Debierre, Natalia S. Oreshkina, Jan S. Breidenbach, Christoph H. Keitel, and Zoltán Harman — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

The determination of the g-factor of highly charged ions allows us to test QED effects in strong fields. There are already very precise measurements of the g-factor of light ions [1] and measurements for heavy highly charged ions are on the way [2]. However, in many cases, theoretical calculations of the g-factor of ions are not on the same level of precision yet. For heavier ions in particular, expansions in the nuclear coupling strength Z α are not feasible.

A combination of experimental and theoretical values of the g-factor of ions recently allowed a significant improvement of the electron mass [3]. A similar interplay of experiment and theory for very heavy ions is expected to improve the value of the fine-structure constant [4]. In this context, we present recent theoretical calculations of the g-factor for H- and Li-like ions. – [1] A. Wagner et al., Phys. Rev. Lett. 110, 033003 (2013); [2] S. Sturm et al., Atoms 5, 4 (2017); [3] S. Sturm et al., Nature 506, 467 (2014); [4] V. M. Shabaev et al., Phys. Rev. Lett. 96, 253002 (2006).