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Figure 4
(a) µ-XRF map recorded on the observation channel. Green stands for the silicon of the chip, orange to red stands for the iron (low and high concentration, respectively) and black indicates a concentration of iron so high that the detector was saturated. (b) Normalized XANES spectra at the Fe K-edge recorded on the positions indicated on the µ-XRF map. The positions where the spectra were collected are reported in (a) as positions A, B and C. The collection of spectra was duplicated; the two successive XANES spectra being labeled 1 and 2, respectively.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 27| Part 1| January 2020| Pages 230-237
https://doi.org/10.1107/S1600577519015042
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