High-resolution in situ characterization of laser powder bed fusion via transmission X-ray microscopy at X-ray free-electron lasers

Taylor, Z.; Reddy, T.; Fang, L.; Oppermann, P.; Kramer, P.L.; Decker, F.-J.; Seaberg, M.; Chollet, M.; van Driel, T.; Halavanau, A.; Hart, P.; Dayton, M.; Seiboth, F.; Wang, W.; Gee, C.; Wilson, A.; Margraf-O'Neal, R.; Chatterjee, G.; Chen, Y.; Molesky, I.J.P.; Wang, Y.; Irvine, S.; Stanton, J.; Melendrez, C.; Banta, K.; Nelson, S.; Thampy, V.; Katagiri, K.; Haubro, M.; Liu, S.; Pal, D.; Moghimi, L.; Tassone, C.; Dresselhaus-Marais, L.

doi:10.1107/S1600577525001675

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Figure 3
(a) A 90 µm Siemens resolution star imaged using the Zyla detector. (b) The polar transform of this image, with the two red lines marking the two-pixel resolution limit (0.4 µm) and the actual resolution at which the line pairs are no longer resolvable (0.9 µm). (c) A subset of the Fourier transform of the polar transformed image corresponding to the Siemens star spokes, with an inset and dashed red line marking the point at which the star is no longer resolvable.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 32| Part 3| May 2025|

https://doi.org/10.1107/S1600577525001675

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