Coherent backscattering of light by cold atoms: theory meets experiment
  Coherent backscattering (CBS) of quasi-resonant light by cold atoms presents some specific features due to the internal structure of the atomic scatterers. We present the first quantitative comparison between the experimentally observed CBS cones and Monte-Carlo calculations which take into account the shape of the atomic cloud as well as the internal atomic structure. 
Guillaume Labeyrie, Dominique Delande, Cord A. Mueller, Christian   Miniatura, and Robin Kaiser