Neutron scattering applied to material science

A neutron reflectometer utilizes the optical phenomenon that neutrons incident on the material surface undergo refraction and reflection if the refractive indices on each side of the surface interface are different. A neutron interferometer using a perfect silicon crystal is analogous to the Mach-Zender interferometer of classical optics. The neutron wave amplitude coherently split by the Bragg reflection is superposed again at the second beam splitter and 

Crystal and magnetic structures decided from experimental results 

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