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54

Geiger-Müller – Survey Meters

plots of this type are given for different cathode materials

ideally one would like an efficiency versus energy curve that exactly matches a plot of exposure per gamma ray photon versus energy

ratio of 2 curves at any given energy is a measure of correction factor that should be applied to the survey meter reading

a plot of this correction factor versus gamma-ray energy for 2 commercial survey meters is shown

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