28 July 2025 to 1 August 2025
ECT*
Europe/Rome timezone

Charge radii determined by laser spectroscopy of He-like ions

29 Jul 2025, 12:10
40m
Aula Renzo Leonardi (ECT*)

Aula Renzo Leonardi

ECT*

Strada delle Tabarelle 286, I-38123 Villazzano (Trento)

Speaker

Wilfried Nörtershäuser (TU Darmstadt)

Description

The atomic structure of few-electron systems is well understood and allows for accurate ab initio calculations of mass-shift and field-shift factors in non-relativistic quantum electrodynamics calculations (NR-QED) to extract precise nuclear charge radii. We have started to determine absolute and differential charge radii of the light elements from Be to N using collinear laser spectroscopy. Helium-like ions of these species provide laser-accessible atomic transitions that can be calculated with the required accuracy in the NR-QED approach. As a first step, the 1s2s 3S1 → 1s2p 3P transitions in 12−14C4+ were determined using the Collinear Apparatus for Laser Spectroscopy and Applied Science (COALA) at the Technical University of Darmstadt. Moreover several charge states of B have been addressed.

Presentation materials