Rostock 2019 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 3: Precision Spectroscopy of atoms and ions I (joint session A/Q)

A 3.4: Vortrag

Montag, 11. März 2019, 11:15–11:30, S HS 2 Physik

A cold lithium target for quantum interference studies — •Marcel Willig, Stefan Schmidt, Jan Haack, Andreas Wieltsch, and Randolf Pohl — Johannes Gutenberg-Universität Mainz, QUANTUM, Institut für Physik & Exzellenzcluster PRISMA⁺, Mainz, Germany

Precision laser spectroscopy of light atoms provides unique information about the atomic and nuclear structure of these systems and thus represents a way to access fundamental interactions, properties and constants. A particular interesting candidate for these kind of studies is atomic lithium with its unique level structure. We will use a cold sample of lithium atoms to perform high-precision laser spectroscopy and to access fundamental nuclear properties. This includes studies of (higher-order) quantum interference effects [1]. In addition, we plan to investigate cold neutral-neutral collision between hydrogen and lithium as a first step towards a cold sample of tritium atoms confined inside a magnetic trap [2].

In this contribution, we will present the current status of our apparatus and present first results. This includes detailed tests of our Zeeman-slower as well as our laser setup which will be used to generate the magneto-optical trap. Furthermore, we want to give an outlook on our future project: trapping and sympathetically cooling hydrogen in a second-generation Li-MOT.

[1] M. Horbatsch, and E. A. Hessels, PRA 82, 052519 (2010)

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