Structure determination of quasicrystals and neutron scattering

We review the use of neutron scattering in the structure determination of q uasicrystals. The contrast between X-ray and neutron cross-section gives a useful complementary information. When feasible, contrast variation techniq ues allow to disentangle the different atomic contribution. Diffuse scatter ing studies are also simplified, thanks to the possibility of an energy ana lysis. We discuss results obtained in the case of the i-AlPdMn phase.