Phason mode in the i-AlCuRu quasicrystal

We propose to measure phason modes in the i-AlCuRu quasicrystal using diffuse scattering on an absolute scale. This measurement will be interpreted using the hydrodynamic theory of quasicrystal and phason elastic constant. This will be the first phason elastic constant determination in the i-AlCuRu quasicrystal that is isostructural to i-AlPdMn.