New laboratory 3D X-ray microscopy with EIGER2 detector

A novel setup for multibeam 3D X-ray microscopy in a lab relies on polycapillary optics and EIGER2 R 500k detector to enable easier and faster measurements, and higher quality data. This application note includes examples of high-resolution experimental geometry, plenoptic X-ray microscopy and X-ray microtomography.

Due to their ability to penetrate deeply into matter, short wavelength X-rays provide a unique means to visualize internal structures of objects with a high spatial resolution.

Recently, submicron spatial resolution was achieved in a novel 3D imaging setup, developed by the X-ray optics laboratory (optiXlab) at Jagiellonian University in Kraków. This new lab instrument for high-resolution 3D imaging relies on polycapillary optics [1] and a photon-counting hybrid pixel detector to generate and detect up to 1000 X-ray beams that simultaneously illuminate a sample from slightly different directions.

The use of this multiple X-ray beam setup has several advantages over the classical approaches:

• Improved signal-to-noise ratio of the collected data at shortened exposure times.
• Possibility to obtain a depth resolved image of an object inside the focal spot of polycapillary optics from a single exposure. That is, tomographic slices at various depths near the focal plane can be reconstructed in a way similar to tomo-synthesis but from a single X-ray exposure.
• High-resolution micro-tomographic scans can be performed without sample translations, truncations of the field of view, or limitations of the angular range.

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