Local Interstitial Oxygen Mapping of Disordered Superconducting Niobium

The aim of this proposal is to locally map the interstitial oxygen concentration, using diffuse scattering, of individual grains and grain boundaries of niobium. Samples, pre-characterized concerning the exact grain shape and orientation in selected marked areas, will be used. The outcome serves as relevant input for the description of the properties of niobium-based radio-frequency cavities within the disordered superconductor theory.