Observation of caustics in the trajectories of cold atoms in a linear magnetic potential
Wilbert Rooijakkers, Saijun Wu, Pierre Striehl +2 more
We have studied the spatial and temporal dynamics of a cold atom cloud in the conservative force field of a ferromagnetic guide, after laser cooling has been switched off suddenly. We observe outgoing ``waves'' that correspond to caustics of individual trajectories of trapped atoms. This provides detailed information on the magnetic field, the energy distribution, and the spin states.
arXiv:physics/0306040•Physical Review A•Dec 19, 2003•16 citations