TY  - GEN
CY  - Heidelberg
N2  - Quantum electrodynamics is the best-tested fundamental theory. It is ubiquitous and contributes to almost all fundamental processes, starting with the interaction between light and matter. The Standard Model of particle physics is still incomplete and requires further research. It is therefore important to deepen the understanding of the most accessible processes. Quantum electrodynamics must therefore be tested in all its facets and its validity verified in extreme situations in order to be able to draw conclusions about our universe. To this end, three measurements on different charge states of highly charged tin are presented here. Hydrogen-like tin, a tin nucleus with a single bound electron, was injected into the Penning-trap experiment ALPHATRAP and the g factor of the bound electron was determined with a relative precision of 5 × 10^?10. Until now, all high-precision measurements of the g
factor of highly charged ions were performed on elements with an atomic number Z ? 20. With Z = 50, the measurement on tin enables the theory to be tested in an unprecedented regime. From this conclusions can be drawn about the validity of quantum electrodynamics in the high electric fields to which the electron is exposed in the vicinity of the atomic nucleus. The g factor of lithium-like and boron-like tin has also been determined with similar accuracy. This makes it possible to study the interaction between the electrons. At the same time, various developments to improve these tests are presented.
Y1  - 2024///
TI  - Stringent Test of Bound-State Quantum Electrodynamics with Highly Charged Tin
AV  - public
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/35537/
A1  - Morgner, Jonathan
ID  - heidok35537
ER  -