Zernike phase contrast in high-energy x-ray transmission microscopy based on refractive optics
Journal article, Peer reviewed
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OriginalversjonUltramicroscopy. 2018, 184 267-273. 10.1016/j.ultramic.2017.10.001
The current work represents the first implementation of Zernike phase contrast for compound refractive lens based x-ray microscopy, and also the first successful Zernike phase contrast experiment at photon energies above 12 keV. Phase contrast was achieved by fitting a compound refractive lens with a circular phase plate. The resolution is demonstrated to be sub-micron, and can be improved using already existing technology. The possibility of combining the technique with polychromatic radiation is considered, and a preliminary test experiment was performed with positive results.