FISCHER FISCHERSCOPE X-RAY XDLM 231, Operator'S Manual

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FISCHERSCOPE ® X-RAY 45
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 radi-
ation, 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
analyse, 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.
Figure 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 count rate
contents (in cps) of a certain number of channels.
At your instrument, this number is between:
Channel # 0 (corresponding to an energy of 0 keV) and
Channel # 255 (corresponding to an energy of approx. 33 keV).
You can change the display of the X axis to show the energies directly.
To toggle the display of the X axis between energies and channels
►
Select in the Spectrum window Scaling > X-Axis energy .
Cursor
Spectral lines