SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 27: Poster III

A 27.11: Poster

Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof

A cold atomic lithium beam via a 2D MOT — •Hendrik-Lukas Schumacher, Benedikt Tscharn, Marcel Willig, Gregor Schwendler, and Randolf Pohl — Johannes Gutenberg-Universität Mainz Institut für Physik, QUANTUM und Exzellenzcluster PRISMA+

Laser spectroscopy of atomic ^6,7Li has been used to determine the (squared) rms charge radius difference of the stable Li nuclei [1]. One important systematic effect in this experiment, as well as in most other precision spectroscopy measurements, is the distortion and apparent shift of resonance line by quantum interference of close-lying states [2]. Li with its unresolved hyperfine structure is an excellent testbed for precision studies of quantum interference [3].

So we present the current performance and setup of a 2D MOT, used to create a source for a very high flux of cold atomic Li for precision spectroscopy [4], and for using trapped cold Li as a buffer gas to enable trapping of atomic hydrogen, deuterium and later tritium [1].

[1] S. Schmidt et al., J. Phys. Conf. Ser. accepted (2018), arXiv 1808.07240

[2] M. Horbatsch, E.A. Hessels, Phys.Rev. A 84, 032508 (2011)

[3] R. C. Brown et al., Phys.Rev. A 87, 032504 (2013)

[4] H. Schumacher, Johannes Gutenberg-Universität Mainz, Master Thesis (2022)