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Question 1. Calculate the energy of a 1173 keV gamma-ray photon after Compton scattering through 90:

  325 keV
  355 keV
  818 keV

 

Question 2. Calculate the energy of a recoil electron if a 1173 keV gamma-ray photon is Compton scattered through 90:

848 keV
325 keV
818 keV

 

Question 3. Which of the three interaction processes is dominant in the following situations:

(use the figure here...)

(i) 1173 keV gamma-rays in lead:

Photoelectric effect
Compton scattering
Pair production

 

(ii) 60 keV gamma-rays in lead:

Photoelectric effect
Compton scattering
Pair production

 

 

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