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MO: Molekülphysik
MO 57: Poster: Cold Molecules
MO 57.7: Poster
Thursday, March 16, 2006, 16:30–18:30, Labsaal
A two-species experiment for ultracold chemistry — •Leif Vogel1, Christian Giese1, Benjamin Müller1, Jörg Lange1, Stephan Kraft1, Peter Staanum1,2, Roland Wester1, and Matthias Weidemüller1 — 1Physikalisches Institut Universität Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg — 2Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover
The study of atom-molecule interactions at very low temperature
has opened possibilities in the field of ultracold chemistry. In
this context we are particularly interested in the
exchange reaction LiCs + Cs ↔ Li + Cs2.
We form Cs2 by photoassociation in a quasi electrostatic
optical trap and aim at forming LiCs in the same way. In our
recent experiments Cs-Cs2 collision rates at ultracold
temperatures were found to be largely independent of their
rotational and vibrational excitation[1]. In contrast, for
ultracold exchange reactions the molecular binding energies and
reaction barriers are expected to play an important role. We
present our experiment aiming at the efficient production of cold
molecules at high densities and discuss the prospects of studying
state-resolved reactive scattering in the quantum collision
regime.
[1] P. Staanum et al. arXiv:physics/0509123 (Phys. Rev. Lett. in press)