D22 - a small-angle neutron scattering diffractometer
Small-angle neutron scattering (SANS) is a technique that measures the deviation at small angles (much less than one degree to several degrees) of a neutron beam due to structures of small size in the sample. "Small" means dimensions of a few tenths to about 100 nanometres, such as clusters in alloys, polymers, or biological macromolecules. In general, these structures are disordered.
Study of nanoscale materials, taking advantage of the sensitivity of neutrons towards isotopes and magnetic spin direction.