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MO: Fachverband Molekülphysik
MO 6: Poster: Cold Molecules
MO 6.10: Poster
Monday, March 14, 2011, 16:00–18:00, P1
Fourier-transform spectroscopy of the mixed alkali - alkaline earth molecule LiCa — Milena Ivanova1, Alexander Stein2, Asen Pashov1, Horst Knöckel2, and •Eberhard Tiemann2 — 1Department of Physics, Sofia University, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria — 2Centre for Quantum Engineering and Space Time Research (QUEST) und Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover
The mixed alkali - alkaline earth molecules gain importance for ultracold molecules because ultracold ensembles of alkali atoms and alkaline earth atoms are produced in several international labs. However, the spectroscopic information is almost completely missing. We succeeded in producing and observing the molecule LiCa in a wide range of vibrational and rotational quantum numbers with Fourier transform spectroscopy .
The modelling of the experimental data is complicated through the fine structure of the doublet ground state X2Σ+ and we will present the current interpretation of this structure. Its understanding and the derived potential energy curve of the ground state are the essential prerequisites for modeling cold collisions in mixed ultracold ensembles of alkali and alkaline earth atoms. The potential curve of the excited state is also derived.