Feshbach Coil Transport Coil Anti - Bias Coils Ioffe Coil Transport Coil Feshbach Coil CDT Beam
نویسندگان
چکیده
We describe an experimental setup and the cooling procedure for producing 39K Bose-Einstein condensates of over 4 × 105 atoms. Condensation is achieved via a combination of sympathetic cooling with 87Rb in a quadrupole-Ioffe-configuration (QUIC) magnetic trap and direct evaporation in a large-volume crossed optical dipole trap, where we exploit the broad Feshbach resonance at 402 G to tune the 39K interactions from weak and attractive to strong and repulsive. In the same apparatus we create quasipure 87Rb condensates of over 8 × 105 atoms.
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