FISCHER FISCHERSCOPE X-RAY 4000 Series, Operator'S Manual

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FISCHERSCOPE
®
X-RAY 39
The Spectrum Window User Interface of the WinFTM Software
6.8 The Spectrum Window
X-ray fluorescence radiation is emitted from the irradiated sample. The detector receives
this radiation, the instrument amplifies it and presents it as a spectrum.
You can evaluate the measured spectrum in the spectrum window. With unknown samples
you can analyze, which components comprise the sample.
To open the spectrum window
► Select in the WinFTM main menu General > Spectrum .
The currently measured spectrum is presented in the spectrum window. The spectra
display window remains empty if a measurement has not yet been made after the program
start. Each spectrum is composed of the characteristic plots (peaks) of the elements that
comprise the sample.
Fig. 6-4: The spectrum window
The spectrum window shows the channels [Chan] at the X axis and the count rates [cps,
counts per second] at the Y axis. Each channel corresponds to an energy value.
The spectrum of the X-ray fluorescence radiation is displayed as a distribution curve of
countrate contents (in cps) of a certain number of channels.
Depending on the whether the instrument is equipped with a proportional counter, PIN
detector or SDD detector, the following area of channels is shown on the X axis:

Proportional counter:
From channel # 0 (corresponding to an energy of 0 keV) to channel # 255 (corre-
sponding to an energy of approx. 33 keV)

PIN detector or SDD detector:
From channel # 0 (corresponding to an energy of 0 keV) to channel # 1023 (corre-
sponding to an energy of approx. 33 keV)
Cursor
Spectral lines