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In this paper, we report our progress towards the realization of a
continuous guided atomic beam in the degenerate regime. So far, we
have coupled into a magnetic guide a flux of a few 108
atoms/s at 60 cm/s with a propagation in the guide over more than
2 meters. At this stage, the collision rate is not high enough to
start an efficient forced evaporative cooling. Here we describe a
new approach to reach the collisional regime. It is based on a
pulsed feeding of the magnetic guide at a high repetition rate.
The overlap of the packets of atoms occurs in the guide and leads
to a continuous guided beam. We discuss different ways to increase
the collision rate of this beam while keeping the phase space
density constant by shaping the external potential
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