Atomic diffusion studied with coherent X-rays
In this paper we report on the first successful experiment utilising coherent X-rays for following the diffusion of atoms. We deduce the activation energy of chemical diffusion in a Cu-Au alloy, and we directly determine the atomistic jump mechanism. We also show quantitatively how short-range order influences the measureable coherent relaxation times. The derivation of the theory can be found in
this publication.
It was published in
Nature Materials on 26 July 2009,
doi:10.1038/nmat2506 an appeared in volume
8, page 717. I am allowed to make a postprint of the accepted paper in my own formatting available
here.
See also the concomitant
News and Views ''X-ray spectroscopy: Revealing the atomic dance'' by G. Brian Stephenson, Aymeric Robert and Gerhard Grübel.
