Studying Atomic Dynamics with Coherent X-rays Gisela 2Hierarchie38

2Hierarchie38

2Inhaltliches Zweckverständnis und Bedeutungsunterschiede12

since it must be capable of handling signals in the GHz range with little distortion

Phasenmessung durch Intensitätspropagation38

Studying Atomic Dynamics with Coherent X-rays Gisela 2Hierarchie38Diffusion in solids at moderate temperatures is a well known phenomenon. However, direct experimental evidence about the responsible atomic scale mechanisms has been scarce, due to difficulties in probing the relevant length and time scales. The present thesis deals with the application of X ray Photon Correlation Spectroscopy (XPCS) for answering such questions. This is an established method for the study of slow dynamics on length scales of a few