What effect does each of the following changes have on the performance of a proportional counter? (a) The diameter  of  the  anode  wire  is  increased.  (b) The pressure of the fill gas is increased. (c) The atomic number of the wall material is increased.

In anthracene, scintillation photons have a wavelength of 447 nm. If 1-MeV of energy is deposited in an anthracene  crystal  and  20,000  scintillation photons are produced,  what  is the scintillation efficiency?

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Solution Answer 1 a Near the wire surface the electric field strength varies inversely with the dist... View the full answer