Laser-free slow atom source

A slow atom source, which does not rely on lasers, has been developed and c haracterized. The device, acting as an atomic low-pass velocity filter, uti lizes permanent magnets to passively select the slow atoms present in a the rmal atomic beam. Slow atoms are guided along a curved, conduction-limited tube by an octupole magnetic field, while fast atoms, unable to follow the curved trajectory, strike the tube wall and are removed from the beam. The performance of the device is demonstrated by loading a magneto-optical trap . Approximately 2 x 10(8) lithium atoms are loaded with a rate of similar t o 6 x 10(6) atoms/s, while maintaining a background gas pressure of similar to 10(-11) torr. This loading technique provides an exceptionally simple, economical, and robust alternative to laser cooling methods. [S1050-2947(99 )00411-4].