In X-ray spectrometry with
solid state detectors there are serious discrepancies and contradictions in theX-ray database and X-ray measurements. It is instructional to look at the
scatter of the data in the recent compilation of proton induced experimental
L-shell cross section.
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| Radiation Measurements |
It is quite obvious that
one of the main reasons for the scatter is that the signal-processors are not
supplying the necessary information. The signal from the detector preamplifier
system has contributions from real events, noise triggered events, incompletely
developed pulses, electronic disturbances. These additional processes have
their own time distribution, not necessarily Poisson in nature. Discriminators
are necessary to remove events from unrelated processes as well as to make a
better quality spectrum for analysis. Discriminators are meant to discriminate
against some events but the number of discriminated events depends on the
knowledge and experience of the user / analyst, the constancy of noise and
electric disturbances, input rates and events with other origins. Read more>>>>>>>
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