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Figure 1
Conceptual illustration of the virtual-reference X-ray speckle tracking method. An X-ray pulse train with fluctuating phases illuminates a static speckle mask. A near-field detector records the corresponding set of transversally displaced speckle patterns. The magnitude of the displacement is proportional to the phase shift between pulses. We define a virtual reference at their midpoint, enabling a statistical reconstruction of wavefield fluctuations throughout the pulse train.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 5| September 2026|
https://doi.org/10.1107/S1600577526005898
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