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.Comment: 5 pages, 3 figures, to appear in Eur. Phys. Let