Theoretical explanation of spatial coherence and source size characterization by X-ray grating interferometry

Lu, Y.; Wang, Z.; Du, X.; Wang, Q.; Hu, L.

doi:10.1107/S1600577526010544

Figure 4
Validation of the ICSD under different conditions at the grating plane: (a) σ_in > ξ_in, (b) σ_in = ξ_in, and (c) σ_in < ξ_in. The blue open circles represent XGI-measured visibility curves from simulations. The red solid lines denote analytical predictions based on the ICSD. The gray dashed lines show the theoretical CCF for reference. The extracted visibility width ξ_meas, the theoretical input coherence length ξ_in, and the corrected coherence length ξ_corr calculated via equation (12)

are annotated.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 34| Part 1| January 2027|

https://doi.org/10.1107/S1600577526010544

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