Figure 3
From: Single-shot X-ray absorption spectroscopy at X-ray free electron lasers

Left panels—XFEL spectra measured before (light gray) and after (black) the sample with the optimized FEL mode for 5 consecutive shots; Middle panels—Corresponding single-shot XANES spectra (blue line) and 5 shots averaged spectra (orange line); Right panel—comparison of different XANES spectra: a single-shot LCLS spectra (blue), 5 shots LCLS averaged (orange), a single bunch ESRF-ID24 spectra (blue with a cross) and a long time accumulation reference spectra from ESRF (light green with a full dot). The spectra are vertically shifted to improve the clarity of the figure. The two arrows are showing the pre-edge and shoulder distinctives features of the iron K-edge XANES.