I always wondered - how is the X-ray photon correlation length defined and where do I find it? This is not the interaction length, I assume.
So, to the physicists: How large is the 'X-ray photon correlation length' for a given wavelength in a given material? I had the impression that the term photon correlation refers to the time correlation of the scattering such as in photon correlation spectroscopy. Best regards, BR
