2.3. Main Operation
2.3.3 Dose Rate, Isotope Identification, and Thermal Neutron
Counting
To optimize both the dose rate measurements and the isotope identification
in ID Mode, the gamma source should be positioned facing the top portion
of the front side (i.e. the side with the display) of the I™. This is
where the gamma identification detector is located, which is denoted on the
device boot with the symbol “G”. The following figure illustrates this optimal
orientation.
Figure 2-11. Optimal Direction to Source (Front) - Gamma
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