Absorption, beam homogeneity and varying irradiated volume corrections in multidomain bulk and thin film samples

Materials important for technology have often properties complicating exact determination of atomic structure with diffraction methods. They often contain heavy elements causing absorption of x-rays which degrades precision of diffraction data, especially for multi-domain samples. With improved focusing of x-rays the question of homogeneity of primary beam becomes important as well as the size of the sample whose irradiated volume may change. In an extreme case of thin films the requirement of constantirradiated volume cannot be fulfilled in principle. The project aims to develop a set of easy to use interconnected tools for making absorption, beam homogeneity and varying irradiated volume corrections. They will be independent on the experimental equipment programs, reversible and applicable in any sequence. The new tools will be available as an interface called ?Intensity Correction Kit?, which will be connected with the computing system Jana in order to make it broadly available. For testing of absorption corrections we shall use multi-domain samples of natural chalcogenides, cylindrites, franckeites and uranyles. The new corrections for variable irradiated volume and beam non-homogeneity will be tested with epitaxial films of martensitic phases Ni-Mn-Ga.