Bonn 2025 – wissenschaftliches Programm

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SYPM: Symposium Precision Measurements at the Intersection of Atomic and Nuclear Physics

SYPM 1: Precision Measurements at the Intersection of Atomic and Nuclear Physics

SYPM 1.3: Hauptvortrag

Mittwoch, 12. März 2025, 15:30–16:00, HS 1+2

Precision measurements and metrology applications at the borderline between atomic and nuclear physics — •Adriana Pálffy — Institute for Theoretical Physics and Astrophysics, University of Würzburg, Germany

Very precise atomic physics experiments can provide information on the properties of the atomic nucleus. On the other hand, atomic processes can drive nuclear transitions, especially for low-lying isomers which couple particularly well to the electronic shell.

The talk will follow two directions. First, it will discuss theoretical and experimental developments on the nuclear clock transition in ²²⁹Th. This nucleus possesses the lowest known nuclear transition energy and promises a novel and unprecedently precise nuclear clock. The nuclear excited level is a metastable state with energy of 8.4 eV, that could just recently be driven by a vacuum-ultraviolet frequency comb [1]. Second, we will discuss recent proposals for nuclear excitation by electron capture employing precision mass measurements to monitor the nuclear state [2].

[1] C. Zhang et al., Nature 633, 63 (2024).
[2] J. Zhao, A. Pálffy, C. H. Keitel and Y. Wu, Phys. Rev. C. 110, 014330 (2024).