Low energy X-ray grating interferometry at the Brazilian Synchrotron

Abstract

A B S T R A C TGrating based X-ray differential phase contrast imaging has found a large variety of applications in the last decade. Different types of samples call for different imaging energies, and efforts have been made to establish the technique all over the spectrum used for conventional X-ray imaging. Here we present a two-grating interferometer working at 8.3 keV, implemented at the bending magnet source of the IMX beamline of the Brazilian Synchrotron Light Laboratory. The low design energy is made possible by gratings fabricated on polymer substrates, and makes the interferometer mainly suited to the investigation of light and thin samples. We investigate polymer microspheres filled with Fe 2 O 3 nanoparticles, and find that these particles give rise to a significant visibility reduction due to small angle scattering.

Solvent‐free synthesized zeolites as compatibility agents in FKM rubber

“…The quantification and monitoring of pore volume variation, as well packing of the inorganic material, as density increased provided some insights into the potential reasons for the performance of such materials under different processing conditions. Examples of the use of such techniques in polymer characterization can be found elsewhere 28,29 …”

“…Examples of the use of such techniques in polymer characterization can be found elsewhere. 28,29 Figure 4 shows the resulting micrographs of the evaluated systems. For each pair of images, the left image represents the pores of the matrix, while the right The efficiency of the use computerizing in a filler blend is higher than that of non-compatibilized blends.…”