Düsseldorf 2007 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 64: Poster Quantengase
Q 64.12: Poster
Donnerstag, 22. März 2007, 16:30–18:30, Poster C
A Scanning Electron Microscope for Ultracold Atoms — •Peter Würtz, Daniel Reitz, Nils Hommerstad, Tatjana Gericke, and Herwig Ott — Institut für Physik, Universtität Mainz; 55099 Mainz, Germany
We present our experimental apparatus that we are setting up in order to detect single atoms with high spatial resolution in ultracold quantum gases. For this purpose we have implemented a scanning electron microscope in a standard BEC apparatus. In our main chamber we achieve a vacuum level of 1×10−10 mbar. With help of a movable test target which is installed inside the chamber we have demonstrated a spatial resolution of 50 nm for a beam current of 10 nA and a beam energy of 6 keV. The atoms are collected in a 3D MOT and successfully transferred in a single beam CO2 dipole trap. We are currently preparing the system for evaporative cooling and perform first tests of the ion detectors.