V–Ni multilayered monochromators and supermirrors for cold neutrons

We present experimental neutron reflectivity results showing that it is possible to use V–Ni multilayered systems as cold neutron monochromators and supermirrors. Compared to the Ni–Ti optics devices, the V–Ni stacks present sharp interfaces characterised by a low interfacial roughness and very small interfacial diffusion.