Freiburg 2024 – scientific programme

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A: Fachverband Atomphysik

A 17: Poster III

A 17.1: Poster

Tuesday, March 12, 2024, 17:00–19:00, Tent C

Towards a precision measurement of the XUV-clock transition in highly charged lead — •Antonia Schaffert, Marc Botz, Dominic Hache, Moto Togawa, José R. Crespo López-Urrutia, and Thomas Pfeifer — Max-Planck-Institut für Kernphysik, Heidelberg

Highly charged ions provide electronic transitions in all wavelengths, well suited for next-generation atomic clocks. In order to find stable clocks, metastable states at higher photon energies are needed. Recently, such a metastable electronic state has been found in highly charged, Nb-like lead using mass spectrometry in a Penning-trap [1]. Given its short wavelength, it must be examined with XUV frequency combs. Such an experiment would greatly benefit from further improvements in the precision of its known transition wavelength. We therefore present complementary measurements by measuring decay pathways of the metastable state, which is mostly deexcited to a short-lived state before relaxing to the ground state. These transitions and other adjacent transitions have been identified and accurately determined using an Electron Beam Ion Trap equipped with a high-resolution VUV Grating Spectrometer.

[1] Kathrin Kromer, et al., physics.atom-ph 2310.19365 (2023)