Energy Dependent X-ray Phase-contrast Imaging Using Grating-interferometry IBartl, PDurst, JHaas, WMichel, TRitter, AWeber, TAnton, G
For example, analyzer-based phase contrast imaging has been applied with X-ray energies up to 60 keV3, however, this technique requires a highly parallel X-ray beam with high temporal coherence. Although both the edge illumination technique and grating interferometry have been demonstrated to ...
Left: Energy-resolved iron Kαimage of a SMBH accretion disc that reflects X-ray photons from a corona, shown for a spatial resolution of 0.1μas. It shows a unique map of photon rest energy changes due to Doppler and GR effects. The precise shape of the constant energy contours of the...
X-ray cameras. Unlike the grating interferometer, the proposed approach can be easily adapted for either lower or higher energy region by varying the length of the steel wool strands along the X-ray beam direction. Though we have used an amber sample and a microchip to demonstrate the ...
X-rayOpticsGrating InterferometryNanocrystals•Low energy X-ray grating interferometry with gratings on low absorbing substrates•Fe2O3nanoparticles can be detected in the dark field signal•New imaging modality was established at the Brazilian Synchrotron Laboratory...
x‐ray imagingX-ray grating interferometry (XGI) provides substantially increased contrast over conventional absorption-based imaging methods and therefore shows great potential for future biomedical applications. In this work, we propose a single-shot phase retrieval method for synchrotron-based high-...
In this work, we propose a single‐shot phase retrieval method for synchrotron‐based high‐energy x‐ray grating interferometry. Contrary to existing retrieval methods, the presented novel approach enables direct retrieval of the object's phase map quantitatively from a single projection image, thus...
Material-selective analysis of spectral X-ray imaging data requires prior knowledge of the energy dependence of the observed signal. Contrary to conventional X-ray imaging, where the material-specific attenuation coefficient is usually precisely known, t
Direct n2 time-resolved interferometry measurements at the wavelength of 1053 nm on SF6 glass and YAG crystal by Moran43 confirmed this 3/2 proportionality term between circular and linear polarizations. Soileau et al. measured the same 3/2 factor on fused silica thanks to optical breakdown ...
using the semi-classical TSM1. The emerging high harmonics were analysed with a custom-built extreme ultraviolet spectrometer consisting of an aberration-free flat-field grating (Shimadzu, Japan) and a multichannel-plate detector coupled with a phosphor screen. The image on the phosphor screen was ...