Abstract
X-ray full-field microscopy at laboratory sources for photon energies above 10 keV suffers from either long exposure times or low resolution. The photon flux is mainly limited by the objectives used, having a limited numerical aperture NA. We show that this can be overcome by making use of the cone-beam illumination of laboratory sources by imaging the same field of view (FoV) several times under slightly different angles using an array of X-ray lenses. Using this technique, the exposure time can be reduced drastically without any loss in terms of resolution. A proof-of-principle is given using an existing laboratory metal-jet source at the 9.25 keV Ga Kα-line and compared to a ray-tracing simulation of the setup.
Highlights
We suggest using an array of CRLs to reduce the exposure time of conecompound refractive lenses (CRLs) [7,8,9,10,11]
Total exposure time for one tomograph. In contrast to these methods, in multi fullan alternative, we suggest using an array of CRLs to reduce the exposure time of cone-beam field microscopy, thethe imaging is positioned between the sample and the sources
Clear structures can be seen between the individual images of the field of view (FoV)
Summary
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