RSDetection
User’s Manual
March 2016 S131-200-UM Rev A
Page 20
Table 3 "F" Factors for Common Isotopes
0.19, 2.4, 0.85, 2.2,1.55
These values can be used to provide a correction factor if the source of the gamma field is
known. Since the detector is calibrated with respect to Ra226 this correction is the ratio of
the measured isotope to the Ra226 “F” factor. A table of these correction factors is shown
in Table 4.
Table 4 Correction Factors
To use these factors, assume you were measuring Co60 and a dose rate of 150uR/h was
measured. To correct this reading this value should be divided by 0.98, yielding 153 µR/h.
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