Rostock 2019 – scientific programme

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A: Fachverband Atomphysik

A 35: Precision Spectroscopy of atoms and ions

A 35.5: Poster

Thursday, March 14, 2019, 16:15–18:15, S Fobau Physik

Collinear laser spectroscopy with ion trap accuracy - Future perspectives for atomic and nuclear physics — •Kristian König, Phillip Imgram, Jörg Krämer, Tim Ratajczyk, and Wilfried Nörtershäuser — Institut für Kernphysik, TU Darmstadt

At the newly constructed collinear laser spectroscopy apparatus COALA at TU Darmstadt an unprecedented accuracy in the determination of rest-frame transition frequencies was recently demonstrated with stable Ba⁺ ions. To our knowledge, this measurement represents the most-precise collinear laser spectroscopic experiment realized so far and can compete with modern ion trap measurements on dipole-allowed transitions. We will present the results and the future potential for precise and accurate measurements of atomic and nuclear properties at this setup. Required techniques like optical pumping and probing deep-UV transitions as well as a frequency-comb based laser stabilization have already been demonstrated with In⁺ ions, paving the way for collinear spectroscopy on helium-like light ions, which is of great interest from a nuclear structure perspective.