Calculate the pulse amplitude from the anode of a PM tube used with a NaI(Tl) scintillator under the following conditions: A 5-MeV electron loses all its energy in the scintillator, the light collection efficiency to the photocathode is 64%, the average quantum efficiency of the photocathode is 19%, and 77% of the photoelectrons are collected at the first dynode. Assume that the PM tube has 10 stages with a multiplication factor δ=2.6 per stage. The anode load resistance is 92 kΩ, and the anode capacitance is 88 pF.

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Number of Photons in 1 MeV is 38000 Number of Photons in 5 Mev is 5 38000 190000 T... View the full answer