ORTEC RADEAGLET, User Manual

Page: 29 / 60

Figure 20: Confirmation after saving the spectrum
The energy-channel ratio of the RADEAGLET scales the energy E=3072 keV to channel 2048 (2k). In-
ternally, the RADEAGLET uses 4096 channels for the spectrum processing.
Changing the x-axis scaling also affects the cursor. The instrument will show the cursor position either in
channel numbers or energy units (whatever is selected).
3.3.8 Changing the y-Axis Scaling: Linear, Logarithmic or Square Root
Scintillation detectors have a certain energy dependent sensitivity. Peaks at low energies (e.g. 59 keV of
241
Am) have a higher sensitivity than peaks at the higher end of the spectrum (e.g. 1332 keV of
60
Co).
When observing this type of spectra and the y-axis has a linear scale, some peaks at higher energies
might not be visible. To see a better display of the higher energy peaks, the user may want to look at the
spectrum either using a logarithmic scale or a square root scale for the y-axis. These different scales
allow the user to visually equalize the peak heights so that a wide range of the spectra can be viewed
without zooming.
You can choose between three data representation modes by toggling between LIN / LOG / SQRT . LIN is
the normal linear mode of displaying the spectrum. LOG represents the logarithmic view. SQRT is the
square root scale for the spectrum. Figure 22 , p. 31 shows a spectrum plotted in square-root scale for
the y-axis. The bar next to the spectrum shows “SQRT” to remind you which vertical scaling is in use. In
logarithmic view, the channels with zero counts are mapped to zero.
© innoRIID GmbH RADEAGLET User Manual• Software 2.1.16 • Document 1.32o • 2017-12-15 Page 29 of 60