  We propose a novel method for guiding cold, neutral atoms using static
magnetic fields. A theoretical study of the magnetic field produced by a tube
consisting of two identical, interwound solenoids carrying equal but opposite
currents is presented. This field is almost zero throughout the centre of the
tube, but it increases with exponential rapidity as one approaches the walls
formed by the current carrying wires. Hence, cold atoms passing through the
tube may be reflected by magnetic mirror effects near the walls. Applying this
technique to a free-falling cloud of magneto-optically cooled caesium atoms we
hope to construct atomic guides to facilitate the manipulation of cold atomic
beams.
