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Erlangen 2018 – scientific programme

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A: Fachverband Atomphysik

A 33: Poster Session II

A 33.35: Poster

Wednesday, March 7, 2018, 16:15–18:15, Redoutensaal

Towards laser spectroscopy of atomic tritium — •Jan Haack, Julian Krauth, Stefan Schmidt, Marcel Willig, Rishi Horn, and Randolf Pohl — Johannes Gutenberg-Universität Mainz, QUANTUM, Institut für Physik und Exzellenzcluster PRISMA, Mainz, Germany

We are currently setting up a new experiment for trapping of atomic tritium in a magnetic bottle and perform laser spectroscopy on it. This is compelling because with precise measurement of the 1S-2S transition the uncertainty of the triton charge radius can be improved by a factor of 400, making it comparable with its mirror nucleus 3He who’s charge radius has been improved recently using muonic helium. Comparison will e.g. allow high precision studies of 3-nucleon-forces. In our experiment tritium is trapped by using a magnetic octupole guide as a velocity selector, a 6Li-MOT as a cold buffer gas and a magnetic bottle as storage. In a first stage the setup will be tested using atomic hydrogen. Additionally the planned setup can be used as a general storage device for hydrogen-like atoms in the future. We will present the design and concept of our upcoming experiment.

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