In this paper we present a grating interferometer setup with a liquid-metal-jet source and a high resolution detector. It will be shown that this source is suitable for interferometer setups as it delivers a sufficient spatial coherence that makes a source grating unnecessary. This is confirmed twice by the results of an interferometer setup and a single grating setup, respectively. Both show comparable information on the samples. Furthermore, it was possible to measure the Talbot effect due to the self-built high resolution detector with an effective pixel size of 0.67 µm and due to the coherence of the source, thanks to a small spot size of a few microns. The information on the absorption of a nylon fiber is observed to include inline phase contrast effects. The dark-field signal of a carbon fiber reinforced polymer (CFRP) is not quite well understood because of its inhomogeneity.
X-ray grating interferometry for 9.25 keV design energy at a liquid-metal-jet source
A. Balles, Ch. Fella, J. Dittmann, W. Wiest, S. Zabler, R. Hanke; X-ray grating interferometry for 9.25 keV design energy at a liquid-metal-jet source. AIP Conf. Proc. 28 January 2016; 1696 (1): 020043. https://doi.org/10.1063/1.4937537
Download citation file: