CAPINTEC, INC. CAPRAC
®
-t
April 2021 WELL COUNTER INITIALIZATION 6-13
Nuclide Efficiency
The CAPRAC
®
-t measures efficiencies for a selected nuclide, which is used by the automatic
peak finding program to provide both the identity and the activity of a peak identified in the
Wipe Test program.
The nuclide is chosen from all nuclides in memory or from those added by the user.
Efficiencies may be input or measured. Examples shown are for Cs137.
Figure 6-10 Efficiencies Setup Screen displays a listing of nuclides stored in the calibrator’s
memory (both default and user added nuclides) – 10 at a time.
The nuclide list is in alphabetical order. The number of pages (or screens) will be shown in
the upper right corner of the screen indicating the length of the list. To scroll through the list,
touch the DOWN ARROW (▼) button. The next group of 10 nuclides will be displayed and
the UP ARROW (▲) button will appear allowing the user to scroll up in the list.
To select a nuclide in the list, touch the desired nuclide. The entire line for the selected
nuclide will become highlighted and an EDIT button will appear in the lower left portion of the
screen. Touch the EDIT button to edit the efficiency for the highlighted nuclide.
If the selected nuclide does not have default values for any of the photopeaks, the screen will
appear similar to that shown in Figure 6-11 Edit Efficiencies Screen – without Default
Photopeaks.
If the selected nuclide does have default values for any of the photopeaks, the screen will
appear similar to that shown in Figure 6-12 Edit Efficiencies Screen – with Default
Photopeaks.
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