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 5
(a) A keyhole generated at 700 W laser power after 0.45 ms and (b) 119 ns after the first frame, as measured on the Icarus detector. Both are overlaid and color-coded in panel (c), where red signal indicates more signal on the first frame and cyan signal indicates more on the second. Two-pixel feature motion equivalent to 10.7 m s⁻¹ velocity.

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ISSN: 1600-5775

Volume 32| Part 3| May 2025| Pages 524-533

https://doi.org/10.1107/S1600577525001675

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