X-ray ptychography using a distant analyzer

Imaging of highly inhomogeneous strain field in nanocrystals using x-ray Bragg ptychography: A numerical study

Observations of artefacts in the x-ray ptychography method.

X-ray ptychography, a scanning coherent diffraction imaging method, was used to reconstruct images of a "Siemens star" test pattern with amplitude and phase contrast. While studying how the use of illumination with an increased bandwidth results in clear improvements in the quality of image reconstructions, we found that an artificial change in the overall distance scale factor of the algorithm...

High Resolution Hard X-ray Magnetic Imaging with Dichroic Ptychography

Claire Donnelly, 2 Valerio Scagnoli, 2, ∗ Manuel Guizar-Sicairos, Mirko Holler, Fabrice Wilhelm, Francois Guillou, Andrei Rogalev, Carsten Detlefs, Andreas Menzel, Jörg Raabe, and Laura J. Heyderman 2, † Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland Paul Scherrer Institute, 5232 Villigen PSI, Switzerland ESRF, 71 Avenue des Martyrs, 38000 Greno...

Semi-transparent central stop in high-resolution X-ray ptychography using Kirkpatrick–Baez focusing

A ptychographic coherent X-ray diffractive imaging (PCDI) experiment has been carried out using 7.9 keV X-rays and Kirkpatrick–Baez focusing mirrors. By introducing a semi-transparent central stop in front of the detector the dynamic range on the detector is increased by about four orders of magnitude. The feasibility of this experimental scheme is demonstrated for PCDI applications with a reso...

X-ray Observations of Distant Lensing Clusters

X-ray observations of three clusters are presented: RXJ1347.5-1145, Cl0939+47, and Cl0500-24. Although these clusters are the in same redshift range (0.32 0.45) and act all as gravitational lenses, they show very different properties. RXJ1347.5-1145 seems to be an old, well relaxed system, with a relaxed morphology, high X-ray luminosity, high temperature, high metallicity and strong cooling fl...