Mastering Characteristic Radiation
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Questions and Answers

What happens when an incoming electron collides with the K-shell electron of a tungsten atom?

  • Both the incoming electron and the K-shell electron are removed (correct)
  • The K-shell electron is removed and the incoming electron is unaffected
  • The incoming electron is removed and the K-shell electron is unaffected
  • The K-shell electron is ejected and replaced by another electron from the same orbit

    • What are X-rays created by the interaction between an incoming electron and a K-shell electron called?

  • Bremsstrahlung radiation
  • Photoelectric effect
  • Characteristic radiation (correct)
  • Compton scattering

    • Why are no characteristic photons produced below 70 kVp?

  • The binding energy of a K-shell is 70 and it takes at least a 70-kVp exposure to eject this electron
  • The binding energy of a K-shell is 70 and it takes at least a 69.5-kVp exposure to eject this electron
  • The binding energy of a K-shell is 69.5 and it takes at least a 70-kVp exposure to eject this electron (correct)
  • The binding energy of a K-shell is 69.5 and it takes at least a 69.5-kVp exposure to eject this electron

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