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Figure 4
Calcium XRF from Volcelia: raw signal from (a) detector 1 and (b) detector 2, (c) sum signal and (d) difference signal. The compensated Ca sum image mostly shows fluctuations in Ca content close to the surface, while the relief effect, highlighted in the difference image, is mostly removed. One pixel corresponds to the beam size of 1 mm × 1 mm.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 4| May 2012| Pages 547-550
doi:10.1107/S0909049512021164
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