CAPINTEC, INC. CAPTUS
®
3000
If data are available for the set criteria, the results will be displayed in the Wipe Test
Summary Reports box. If no data are available for the selected criteria, the following
message will appear:
Figure 8-41
Refine the search criteria until the desired results are displayed.
Printing Wipe Test Summary Report
Any of the displayed Wipe Test Summary Reports may be printed to the system
printer.
When the desired Summary Report is displayed in the window, click the
button.
Exiting Summary Reports
Click the
button on Figure 8-33 Wipe Test Summary Reports
Window to return to Figure 8-23 Wipe Test Search Window.
ISOTOPE EFFICIENCY
Note: A Full Spectrum Efficiency value must be entered in the setup at all times.
Efficiency is a measurement parameter that is defined as the ratio of detected counts (or
counting rate) measured by the system to actual disintegrations (rate of decay). Efficiency
can be defined as follows:
minuteper tionsdisintegra
100minuteper counts
Efficiency
%
×
=
The efficiency of an isotope depends upon the geometry, region of interest, energy,
abundance and activity of the source as well as the type of detector system used to measure
the source. For these reasons, efficiency values vary from one isotope to another. The
CAPTUS
®
3000 uses a default value of 65% for full spectrum efficiency. Full spectrum
means the total number of counts detected in all of the MCA channels. This is the nominal
November 13 WIPE TESTS 8-29
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