Frankfurt 2006 – wissenschaftliches Programm
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MO: Molekülphysik
MO 54: Cold Molecules II
MO 54.7: Vortrag
Donnerstag, 16. März 2006, 15:30–15:45, H10
LiCs molecules: High-resolution spectroscopy and applications to experiments with ultracold molecules — •P. Staanum1,2, A. Pashov3, H. Knöckel2, E. Tiemann2, S. D. Kraft1, J. Lange1, L. Vogel1, C. Giese1, B. Müller1, R. Wester1, and M. Weidemüller1 — 1Physikalisches Institut, Universität Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg — 2Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover — 3Department of Physics, Sofia University, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria
With the recent developments in formation and trapping of ultracold molecules new possibilities for experimental studies within the field of ultracold chemistry have emerged. Ultracold atom-molecule and molecule-molecule collisions can be studied in an optical dipole trap as it was recently done for Cs+Cs2 collisions (P. Staanum et al., arXiv:physics/0509123 and N. Zahzam et al. arXiv:physics/0509197. To appear in Phys. Rev. Lett.). For heteronuclear molecules, studies of ultracold reactive collisions like LiCs+Cs ↔ Li+Cs2 have become feasible.
We aim at formation of LiCs molecules by photoassociation from mixed Li-Cs cold atom samples. A detailed understanding of LiCs photoassociation as well as state-dependent collision processes requires accurate LiCs potential curves. We have obtained such curves for the X1Σ+ and a3Σ+ electronic ground states as well as the B1Π and D1Π excited states through high-resolution laser-induced fluorescence Fourier-transform spectroscopy. We present here our spectroscopic results on LiCs and their application, as well as the status of our work on formation of LiCs by photoassociation and experiments with these molecules.