X-ray fluorescence holography in theory and experiment

The current state of atomic resolution X-ray holography is discussed on the basis of theoretical simulations and experimental results. The dependence of the spatial resolution on photon energy and angular scan ranges are stud ied, and presently-used experimental implementations are described together with the data analysis used. Reconstructions of simulated and experimental holograms are compared for a Cu3Au crystal structure. Rigorous experimenta l realizations of pure direct and reciprocal X-ray holography methods are d emonstrated, and future developments and applications of the method are sug gested.