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Figure 4
(a) Temporal evolution of the Au (200) diffraction peak following laser excitation at various time delays. The detector position for the (200) reflection corresponds to the (111) fiber texture, which exhibits a peak width of ∼5° as seen in Fig. 1[link](c). Upon melting and recrystallization, this intensity becomes azimuthally dispersed and weakens, so the (200) reflection essentially probes the unmelted, cold region. The dashed lines show a Gaussian fit. (b) Evolution of the Au (200) peak positions with time, which reveals expansion along this plane.

IUCrJ
Volume 13| Part 3| May 2026| Pages 249-259
ISSN: 2052-2525
https://doi.org/10.1107/S2052252526001727