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I13-1-Coherence	Single-exposure X-ray phase imaging microscopy with a grating interferometer Andreas Wolf , Bernhard Akstaller , Silvia Cipiccia , Silja Flenner , Johannes Hagemann , Veronika Ludwig , Pascal Meyer , Andreas Schropp , Max Schuster , Maria Seifert , Mareike Weule , Thilo Michel , Gisela Anton , Stefan Funk Journal Of Synchrotron Radiation 29 DOI: 10.1107/S160057752200193X Diamond Proposal Number(s): [18540] Open Access Show Abstract ▼ Abstract: The advent of hard X-ray free-electron lasers enables nanoscopic X-ray imaging with sub-picosecond temporal resolution. X-ray grating interferometry offers a phase-sensitive full-field imaging technique where the phase retrieval can be carried out from a single exposure alone. Thus, the method is attractive for imaging applications at X-ray free-electron lasers where intrinsic pulse-to-pulse fluctuations pose a major challenge. In this work, the single-exposure phase imaging capabilities of grating interferometry are characterized by an implementation at the I13-1 beamline of Diamond Light Source (Oxfordshire, UK). For comparison purposes, propagation-based phase contrast imaging was also performed at the same instrument. The characterization is carried out in terms of the quantitativeness and the contrast-to-noise ratio of the phase reconstructions as well as via the achievable spatial resolution. By using a statistical image reconstruction scheme, previous limitations of grating interferometry regarding the spatial resolution can be mitigated as well as the experimental applicability of the technique.	May 2022

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I13-1-Coherence

Single-exposure X-ray phase imaging microscopy with a grating interferometer