Sy
clone Portable Gamma-Ray Spectrometer, Revision 10 2.0 DETAILED OPERATION GUIDE
Ra
dComm – Proprietary Page 12 Revision Date: March 3, 2016
The
data is described as follows:
PEAK – this is the peak channel of the centroid of the accumulated spectrum. The correct
final channel for CESIUM stabilization is channel 219.8.
FWHM – the Full-Width-Half-Maximum (7.6) is a measurement of the quality of the detector
to resolve narrow peaks. Good operation is possible with units measuring FWHM up to 8.5%.
FWHM measurements above 8.5%; spectral peaks are widening, making accurate peak
analysis very difficult, and above 9.5%; spectral analysis, especially in the lower energy area,
is almost impossible.
2.5.2 STABILIZATION SETTINGS
The User can select from “Configuration” – “Stabilization” menu, there are several options
to stabilize the Syclone. These are: ‘12 hours’, ’24 hours’, “AUTO” and “OFF”.
The options ‘12’ and ‘24 hours’ adjust the time intervals when the Syclone will notify the user
to re-stabilize the unit. ‘AUTO’ is an option to avoid frequent Cs-137 source stabilization for
NaI detector temperature interval between 5
o
C to 50
o
C.
Please note: this temperature interval is for temperature on the detector crystal, not
the ambient temperature!
2.5.3 STABILIZATION – AUTO MODE
AUTO – is an option allowing the User to avoid frequent Cs-137 source stabilization, for the
NaI detector temperature interval between 5
o
C to 50
o
C. This option is only available if unit
temperature is within 5-50 ºC. If Auto is selected in STAB Mode selection and the unit is
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