Bragg scattering and the spin structure factor of two-component atomic   gases
  Bragg scattering with linearly polarized light can be used to separately measure the density and the spin structure factor of a two spin component atomic gas by looking at the dependance of the scattering intensity on the polarization of the laser fields. Both stimulated and spontaneous scattering are discussed. Explicit results for different spin configurations are given. 
Iacopo Carusotto