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Figure 1
A top view showing the principle of the 1D imaging soft X-ray spectrometer. A Wolter mirror pair forms a magnified image of the sample along the XFEL beam on the detector in the horizontal plane, while the grating diffraction forms a wavelength-dispersed spectrum in the perpendicular plane. The detector image shows spectral features unique to the three particular positions indicated in the sample along the XFEL beam. |