Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 29: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 29.8: Poster

Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof

Towards Ultracold Chemistry - Scattering of Ba+ and Rb in an optical dipole trap — •Alexander Lambrecht, Thomas Huber, Michael Zugenmaier, Julian Schmidt, and Tobias Schaetz — Albert-Ludwigs-Universität Freiburg

Ultracold chemistry is a highly interesting research field. Examining collisions of atoms and ions at extremely low velocities permits to gain information about the corresponding scattering potentials and therefore of quantum effects in chemical reactions. In the last years several experimental groups investigated cold collisions between atoms and ions, leading to better understanding of the atom-ion interaction in many different aspects[1-3]. Our approach to reach the regime of ultracold collisions is to precool a barium+ ion, trapped in a large paul trap, with conventional doppler cooling and furthermore with an ambient rubidium MOT. By switching off our RF-potential we overcome the limitations set by heating due to the RF micromotion[4]. We describe the experimental apparatus in its recent stage and the very first experiments done with it.
A.T.Grier, M.Cecina, F.Orucevic and V.Vuletic, Phys.Rev.Lett. 102,223201(2009)
C.Zipkes, S.Palzer, C.Sias and M.Koehl, Nature 464, 388 (2010)
W.G.Rellergert, S.T.Sullivan, S.Kotochigova, A.Petrov, K.Chen, S.J.Schowalter and E.R.Hudson, Phys.Rev.Lett. 107 243201 (2011)
L.H.Nguyen, A.Kalev, M.D.Barett and B.Engelert, Phys.Rev.A 85, 052718 (2012)