X-ray waveguide optics at GINIX/P10 PETRA III: recent progress and future directions

Salditt, T.; Meyer, P.; Lohse, L.M.; Lucht, J.; Soltau, J.; Kozák, N.; Kanbach, M.; Osterhoff, M.; Westermeier, F.

doi:10.1107/S1600577525011567

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Figure 7
Reconstruction of WG wavefield by phase retrieval. (a) Far-field intensity distribution of WGb-Ev3R3, representing the measurements of phase retrieval, recorded by the Eiger detector at E = 8 keV, with I_WG = 9.82 × 10⁸ photons s⁻¹. (b) Reconstructed intensity distribution in the WG exit plane |ψ(x = 0, y, z)|² and (c) corresponding phase, after N_it = 500 iterations of the AP algorithm, with a circular support of R = 400 nm as a constraint ( $[{\cal P}_{s}]$ ). (d) Autocorrelation function of the near-field, obtained by inverse Fourier transform of the data in (a). (f) Reconstructed intensity in the detector plane (before projection onto the measurements). One can observe a reasonable filling of the inter-module gaps, which were masked out in the projection onto the measurements $[{\cal P_{M}}]$ . Color scale: logarithmic (base 10, photons s⁻¹) in (a, f), linear in (b, c, d). Scale bar: 0.1 nm⁻¹ in (a, f), 75 nm in (b, c, d).

JOURNAL OF
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RADIATION

ISSN: 1600-5775

Volume 33| Part 2| March 2026| Pages 298-313

https://doi.org/10.1107/S1600577525011567

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