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Heavy Metals XRF Spectra

XRFKlines

Besides that with the source Americium 241 at 60keV (as described in the post DIY XRF Spectrometry) the XRF technique is also feasible with other gamma excitation sources such as the isotope Na22 which emits at 511keV. In this case the sample is positioned between the detector and the source, as shown in the figure above. With this setup and this excitation source is also possible to excite the K lines of heavy metals, which have energies greater than 60keV.

Gold (Z=79)

gold

Mercury (Z=80)

mercurio

Lead (Z=82)

piombo

Bismuth (Z=83)

bismuto

Thorium (Z=90)

torio

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