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Direct imaging of ultrafast lattice dynamics

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Academic year: 2019

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Figure

Fig. 1. Experimental configuration of optical drive laser and probe x-rayfree-electron laser
Fig. 2. X-ray data taken at a 15-ns time delay. (shot of whole shock and five 10-A) Phase-contrast images of the 200-mm field-of-view “whole shock” and 10-mm field-of-view spatial scan, revealing amultiple-shockwave structure
Fig. 4. Shockwave characterization. The bottom image maps the silicon [100]between E1 and E2 is not known, gray dashed lines show the range of potential densityvalues
Fig. 5. Relation between visibility and phase. This visibility corresponds to achange in phase induced in the propagated electromagnetic wave as it passesthrough a density discontinuity in the material

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