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Measured integrated photon flux at the sample position of the HZB-TXM using a 10 µm exit slit of the monochromator for the 1. and 3. harmonic of the undulator. The inset shows the situation at the carbon-K-edge: A decrease of the flux due to the carbon contamination of the optical elements and the effect of the second order radiation (double photon energy, without using any filter).
