Functional principles
24
User Manual
Table 3 Steps of spectrum evaluation
Procedure Spectrum
1 Spectra correction
Correction of certain detector
artifacts such as shelf background,
escae peak, and sum peaks.
2 Element identification
The X-ray fluorescence lines of the
individual elements are stored in
an atomic data library. The
identification of the elements is
normally done by an interactive
comparison of the measured
spectral lines and the measured
spectrum from the periodic table.
3 Background correction
A remaining spectral background
composed of the detector shelf
and the scattered excitation
radiation has to be subtracted from
the spectrum.
The scattered part depends on the
sample itself. For heavy samples
this background is very small (as
for jewelry samples) but for light
samples it can be more significant.
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