© 2012

Studying Atomic Dynamics with Coherent X-rays


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-x
  2. Michael Leitner
    Pages 1-4
  3. Michael Leitner
    Pages 5-19
  4. Michael Leitner
    Pages 21-32
  5. Michael Leitner
    Pages 51-64
  6. Michael Leitner
    Pages 65-74
  7. Michael Leitner
    Pages 75-85
  8. Michael Leitner
    Pages 87-88
  9. Back Matter
    Pages 89-96

About this book


Diffusion 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 nanometres. The scattered intensity in the diffuse regime, i.e. corresponding to atomic distances, is very low, however, and so it has so far been considered impossible to use XPCS for this problem.

Threefold progress is reported in this work: It proposes a number of systems selected for high diffuse intensity, it optimizes the photon detection and data evaluation procedures, and it establishes theoretical models for interpretating the results. Together these advances allowed the first successful atomic-scale XPCS experiment, which elucidated the role of preferred configurations for atomic jumps in a copper-gold alloy.

The growth in available coherent X-ray intensity together with next-generation X-ray sources will open up a wide field of application for this new method.


X-ray photon correlation spectroscopy XPCS atomic dynamics diffusion in solids nanometer-scale dynamics outstanding PhD thesis

Authors and affiliations

  1. 1., Fakultät für PhysikUniversität WienWienAustria

Bibliographic information

Industry Sectors
Energy, Utilities & Environment
Oil, Gas & Geosciences