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Figure 1
(a) The fractional error of a transmission signal plotted as a function of optical density, with the curve minimum indicated by a circle at 2.2OD. The left-hand y-scale shows the fractional error in units of [I^{\,-{{1}/{2}}}_{0}], while the right-hand y-scale describes the fractional error as a percentage of the optimum value. (b) A comparison of fractional error curves for a transmission signal (blue), as well as fluorescence signals caused by the photo-excitation of the C, Al and Au K-edges (orange, green and red curves, respectively, assuming a detector solid angle of 0.24 sr), and an example TEY signal (dashed). Shaded regions indicate the effect of the penetration power of the emitted X-rays decreasing by up to tenfold.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 4| July 2022| Pages 1054-1064
https://doi.org/10.1107/S1600577522004210
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