title: Propagator based formalism for optimizing in-line phase contrast imaging in laboratory X-ray setups.
abstract: We derive a propagator based formalism for optimizing phase contrast imaging in laboratory setups as well as in synchrotron setups. We confirm based on five different setups the well known existence of an optimum position for the sample in terms of phase contrast by measuring two types of fibers and evaluating the fringe contrast. Furthermore, we demonstrate for these setups a correlation of our formula and the fringe contrast. Hence, an estimate of this optimum position is given by our formalism which only depends on the source size, the detector blurring, and the total distance between source and detector.
authors: Chair of X-ray Microscopy, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany.
authors: Andreas
authors: A
authors: Balles
authors: Chair of X-ray Microscopy, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany.
authors: Simon
authors: S
authors: Zabler
authors: Chair of X-ray Microscopy, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany.
authors: Thomas
authors: T
authors: Ebensperger
authors: Chair of X-ray Microscopy, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany.
authors: Christian
authors: C
authors: Fella
authors: Chair of X-ray Microscopy, Julius-Maximilians-Universität Würzburg, 97074 Würzburg, Germany.
authors: Randolf
authors: R
authors: Hanke