Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 21: Poster I
Q 21.5: Poster
Dienstag, 9. März 2010, 16:00–19:00, Lichthof
Collisional properties of ultracold 40Ca atoms — •Oliver Appel, Sebastian Kraft, Felix Vogt, Fritz Riehle, and Uwe Sterr — Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
We recently succeeded in achieving a 40Ca Bose-Einstein condensate [1]. The understanding of collisional properties like the ground state scattering length and the 3-body loss coefficient were crucial steps on our way to the BEC. On the other hand the dense ensemble near the critical temperature provides us with new opportunities to study collisions both between ground state and excited atoms. Here we present various methods of determining the ground state scattering length and the 3-body loss coefficient as well as the current status of our photoassociation measurements on the 1S0–3P1 asymptote.
[1] S. Kraft, F. Vogt, O. Appel, F. Riehle, and U. Sterr, Phys. Rev. Lett. 103, 130401 (2009).