title: Using coherence to measure two-time correlation functions.
abstract: An introduction to x-ray intensity fluctuation spectroscopy is given by describing its relationship to speckle from coherent sources. Its use to measure two-time correlation functions is demonstrated using the equilibrium fluctuations of gold colloids in polystyrene and for non-equilibrium fluctuations in the unmixing below the miscibility gap in AlLi.
authors.forename: Mark
authors.initials: M
authors.lastname: Sutton
authors.forename: Khalid
authors.initials: K
authors.lastname: Laaziri
authors.forename: F
authors.initials: F
authors.lastname: Livet
authors.forename: F
authors.initials: F
authors.lastname: Bley