Berlin 2001 – wissenschaftliches Programm
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Q: Quantenoptik
Q 27: Cooling and Trapping V (joint session A and Q)
Q 27.2: Vortrag
Donnerstag, 5. April 2001, 17:45–18:00, H 104
Continuous loading of a magnetic trap — •Jörg Werner1, Jürgen Stuhler2, Piet Oliver Schmidt1, Sven Hensler1, Jürgen Mlynek2 und Tilman Pfau1 — 15. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550 Stuttgart, Germany — 2Fachbereich für Physik, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
We have realized a scheme for continuous loading of a magnetic trap (MT) [1]. 52Cr atoms are continuously captured and cooled in a magneto-optical trap (MOT). Optical pumping to a metastable state decouples atoms from the cooling light. Due to their high magnetic moment (6 µB), low-field seeking metastable atoms are trapped in the magnetic quadrupole field provided by the MOT. Limited by inelastic collisions between atoms in the MOT and in the MT, we load 108 metastable atoms at a rate of 108 atoms/s at 50-100 µK into the MT. After loading we can perform optical repumping to realize a MT of ground state chromium atoms.
[1] J. Stuhler, P. O. Schmidt, S. Hensler, J. Werner, J. Mlynek, T. Pfau, e-print archive quant-ph/0011113
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