Exploranium GR-135, System Manual, Page: 26 / 80

SAIC Exploranium – GR-135 System Manual page: 26
7.7.2 NEUTRONS
If the integrated NEUTRON sensor detects the presence of Neutrons, this data is displayed as pseudo
Dose data (calibrated for Cf-252) as shown in Fig. 21 and 22 (or as COUNTS depending on
parameter settings in SETUP)
Fig. 21 Fig. 22
In SETUP (section 10) special parameters are used to optimize Neutron performance.
7.7.3 OTHER DISPLAY LABELS
NO NUCLIDES FOUND – this means that the analysis routines found no identifiable nuclides
CZT REQUIRED – this means that the analysis showed some uncertainty
about the peaks so a CZT analysis is required. In the AUTOMATIC
mode this is fully automatic, however in the MANUAL mode the
user must use SETUP/IDENTIFY/DETECTOR and set
DETECTOR=CZT then carry out data analysis
In this case the Sodium-Iodide spectral analysis and the CZT
spectral analysis are totally separate
Fig. 23
NOTE: USERS ARE ADVISED THAT IN THE MANUAL MODE THE SODIUM-IODIDE DATA
ANALYSIS RESULTS ARE SEPARATE FROM THE CZT ANALYSIS RESULTS. SO IT IS
NECESSARY TO NOTE THE RESULTS FROM THE NaI BEFORE SWITCHING TO THE CZT (as
long as the spectra are all stored – use STORE SPECTRUM – then the users can go back
and look at all spectra when they want)
MAIN MENU Exits back to the Main Menu
NUCLIDE LIST
Cs-137 21
NEUTRONS 0.452uSv/h
RETURN
TYPE ISOTOPE SIZE
I ND Cesium-137 11
ENTER TO CONTINUE
NUCLIDE IDENT
NEUTRONS 0.452uSv/h
TYPE ISOTOPE
I ND Thorium-232
ENTER TO CONTINUE
NUCLIDE IDENT
CZT Required