ORTEC
®
Detective-EX/DX
®
-100T Portable HPGe Spectrometer — User’s Manual
931040P / 1014
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Figure 28. View Found Nuclides
List.
Figure 29. View Top Lines.
LCX Mode). To view the found nuclides, simply tap on any of the ID messages on the ID Mode
screen. The first tap will open the Found Nuclides report (see Fig. 28). Each ID will have a red,
yellow, or green background corresponding to its threat level as described in Chapter 4. To
access the Suspect Nuclides report in LCX Mode, tap an ID message on the Found screen. The
report screens let you Save the current spectrum and identification results to disk and Display
the current spectrum. Tap Back to return to the main Identification Mode screen.
3.2.5. Intense (View Highest-Intensity Spectrum Lines)
Tap Intense to view the list of most intense gamma-ray lines in the spectrum. The most intense
lines list is a continuously updating list of the 10 best peaks currently detected (Fig. 29).
The energies are based on the internal nuclide library. The rank is based on the confidence value
for the peak. When a detected energy matches an entry in the library, its tentative identity is
posted on this screen, by peak energy, in column 1; and ID confidence factor (also called the Q
value), in column 2. The higher the confidence value, the more likely that the peak is a real
gamma ray peak and not background noise. It should be understood, however, that a peak could
be seen in the top lines list but the corresponding nuclide not reported as found. This is because
there are many other tests applied before an identity or tentative identity is chosen. In general,
any Confidence value over 25 indicates a good peak.
To return to the Identification Mode tap Back.
Summary of Contents for Detective-DX-100T
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