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Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 60: Structure and Dynamics of Nuclei XI

HK 60.2: Gruppenbericht

Freitag, 3. April 2020, 11:30–12:00, J-HS H

Towards a nuclear clock with 229Th — •Benedict Seiferle1, Daniel Moritz1, Lars von der Wense2, and Peter Thirolf11LMU Munich — 2JILA, Boulder, USA

With an excitation energy of 8.28±0.17 eV [1], the first isomeric state in 229Th (called 229mTh) is the only (currently known) nuclear state that can be excited with today’s laser technology. Its properties make 229mTh an ideal candidate for a nuclear optical clock, which is expected to compete with optical atomic clocks. Experiments that led to the first direct energy determination of 229mTh, as well as future experiments aiming towards a nuclear optical clock will be presented.
[1] B. Seiferle et al., Nature 573, 243 (2019).
This work was supported by DFG (Th956/3-2) and by the European Union’s Horizon 2020 research and innovation program under grant agreement 6674732 "nuClock".

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