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

  title={Realization of a magnetically guided atomic beam in the collisional regime.},
  author={Thierry Lahaye and J. M. Vogels and Kenneth G{\"u}nter and Z. C. Wang and Jean Dalibard and D. Gu{\'e}ry-Odelin},
  journal={Physical review letters},
  volume={93 9},
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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