Medical Physics: Nuclear Medicine Principles
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Questions and Answers

What is the minimum energy required to disassemble a system of particles into separate parts?

  • Thermal energy
  • Kinetic energy
  • Potential energy
  • Binding energy (correct)

    • What is the energy required to release electrons from the orbitals of an atom?

  • Atomic binding energy (correct)
  • Electron affinity
  • Ionization energy
  • Nuclear binding energy

    • Which of the following is a special unit defined as the energy required to move one electron against a potential difference of one volt?

  • Newton
  • Joule
  • Electron volt (correct)
  • Calorie

    • Which of the following mechanisms involves the absorption of a low-energy photon by an atom, resulting in the ejection of an energetic electron?

    <p>Photoelectric effect</p> Signup and view all the answers

    What happens during Compton scattering?

    <p>Both the photon and an electron are scattered from an atom.</p> Signup and view all the answers

    At what energy level can photons interact with the field around the nucleus and undergo pair production?

    <p>Higher energies</p> Signup and view all the answers

    What is the source of gamma rays?

    <p>The nucleus of a radioactive atom</p> Signup and view all the answers

    What is the source of X-rays?

    <p>Outside the nucleus of a radioactive atom, or from an electron as it changes direction when passing an atomic nucleus</p> Signup and view all the answers

    What are gamma rays and X-rays collectively referred to as?

    <p>Ionizing photons</p> Signup and view all the answers

    What is the difference between gamma rays and X-rays?

    <p>They differ only in their source.</p> Signup and view all the answers

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