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Syclone Portable Gamma-Ray Spectrometer, Revision 10
5.0 MANUAL MODE
RadComm – Proprietary
Page
33
Revision Date: March 3, 2016
5.2.3.5.1 NUCLIDE LIST
If this mode is activated then a new Nuclide Identification analysis of the selected spectrum is
carried out. The display shows the NUCLIDE LIST screen as displayed. Note that this display
is a more complex version of the previous NUCLIDE IDENT display as this secondary display
is intended to show a higher level of detail for further user analysis.
Th-232 – is the isotope label of the identified isotope
10 – this is the relative amplitude of the isotope in Standard- Deviation units. In the case of
an isotope with multiple peaks this is the sum of all the relevant peaks.
SHIELDED – The Syclone has a wide selection
of radioactive isotopes in its internal library.
If after analysis, the isotope or the residual
signal/ gamma peak cannot be identified,
the
screen
displays
“UNKNOWN
SOURCE”, “SHIELDED
SOURCE”
or
“BACKGROUND” message.
HIGHLIGHTING – when the display appears, the
first isotope is highlighted. The joystick can
be used to move up/down the displayed list
to highlight a required item.
NEUTRON – Neutron Isotopes have been found.
RETURN – pressing RETURN goes to the Main Identify Menu.
5.2.3.5.2 NUCLIDE DETAILS
When the highlighted isotope is selected by
cursor, then ENTER is pressed, the details of that
isotope selection are displayed – see the Figure.
This display shows all the peaks related to the
isotope and various data about them:
Th-232 – is the isotope identified then selected.
2/5 – relates to the isotope identification
requirements, in this case 2 peaks are found
(345kev and 583kev).
345 – the peak in keV.
114 – the peak in CH
26.8 – the FWHM of the peak, a useful measure
of peak quality
5.2 – the amplitude of the peak in SD units
ENTER TO CONTINUE - returns to the IDENTIFY
screen
NEUTRONS
If the integrated NEUTRON sensor detects the
presence of Neutrons, this data is displayed as
COUNTS (shown in the following figures).