No contamination in this one, just a clean Lutetium spectrum with the expected Lu176 peaks, XRF from the Lead sheild and the Lutetium, and a nice sum-peak. The only thing I am not sure of is why the sum peak seems to be shifted up slightly instead of being at 509keV. Also as always with my spectra, small thorium peaks as it seem the plaster in the walls of my flat contain a lot of it.
Share your spectra and discuss their features here
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