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Bonn 2020 – scientific programme

The DPG Spring Meeting in Bonn had to be cancelled! Read more ...

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Poster (b)

HK 52.17: Poster

Thursday, April 2, 2020, 16:30–18:30, Grotte

A cryogenic Paul trap for 229Th — •Daniel Moritz1, Benedict Seiferle1, Lars von der Wense1,2, and Peter G. Thirolf11LMU München — 2JILA , Boulder , USA

The comparably low energy of the isomeric first excited nuclear state of 229Th, which has most recently been constraint to 8.28±0.17 eV [1], allows for direct laser excitation with current technology. This offers the unique opportunity to develop a nuclear clock [2] capable of competing with existing atomic clocks. One of the next steps towards the realization of such a clock is the determination of the 229Th isomer’s ionic lifetime, which is expected to be in the range of several minutes up to hours. In order to achieve the required ion storage times, a cryogenic Paul-trap is currently set up at the LMU Munich.

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".

[1] B.Seiferle et al., Nature 573, 243 (2019).

[2] E.Peik & C.Tamm, Europhys. Lett. 61, 181 (2003).

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