1107231N / 082020 4. DETECTIVE X APPLICATION
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Figure 58. Expanded Spectrum with Marker Near 1173 keV (with Logarithmic Vertical Scaling)
Zoom In <>
— The
<>
button expands the display by halving the number of channels displayed, so
the peaks appear wider. The center channel of the new display will be the marker position.
Zoom Out ><
— The
> <
button contracts the display by doubling the number of channels displayed,
so the peaks appear narrower. The center channel of the new display will be the marker position.
Channel Zero (0) is the leftmost side of the display, and Channel 16384 is the rightmost side of the
display.
Lin/Log
— This button toggles the spectrum’s vertical scale between linear mode, which
automatically adjusts the vertical scale limit based on the tallest peak in the spectrum, and
logarithmic mode.
4.7.2
Intense View
Tapping the
Intense
button displays a continuously updating list of the 8 highest-confidence peaks currently
being detected. The
Energy
and
Confidence
are ordered by highest to lowest confidence level; and displayed
in two columns, left-to-right then down, so all of the peaks can easily be seen at a glance (see Figure 59). As
discussed earlier, the confidence level is the net counts in the peak divided by the peak uncertainty. As the
net counts in the peak increase, the uncertainty decreases, and the confidence level increases proportionally.
