Realization of a magnetically guided atomic beam in the collisional regime.

Phys Rev Lett

Laboratoire Kastler Brossel, 24 rue Lhomond, F-75231 Paris 05, France.

Published: August 2004

We describe the realization of a magnetically guided beam of cold rubidium atoms, with a flux of 7 x 10(9) atoms/s, a temperature of 400 microK, and a mean velocity of 1 m/s. The rate of elastic collisions within the beam is sufficient to ensure thermalization. We show that the evaporation induced by a radio-frequency wave leads to appreciable cooling and an increase in the phase space density. We discuss the perspectives to reach the quantum degenerate regime using evaporative cooling.

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http://dx.doi.org/10.1103/PhysRevLett.93.093003DOI Listing

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