Evaporation of an atomic beam on a material surface

Details Evaporation of an atomic beam on a material surface Evaporation of an atomic beam on a material surface

2006-02-03

arxiv.org/abs/cond-mat/0602069v1

Physics

Condensed Matter

Other Condensed Matter

Submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.73.035402

We report on the implementation of evaporative cooling of a magnetically guided beam by adsorption on a ceramic surface. We use a transverse magnetic field to shift locally the beam towards the surface, where atoms are selectively evaporated. With a 5~mm long ceramic piece, we gain a factor $1.5\pm0.2$ on the phase space density. Our results are consistent with a 100% efficiency of this evaporation process. The flexible implementation that we have demonstrated, combined with the very local action of the evaporation zone, makes this method particularly suited for the evaporative cooling of a beam.

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