Dr. Zidan Mohamed Houmani Ch. 1: Radiation Sources - IC Electrons Energy
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Questions and Answers

What is the dominant decay mechanism in spontaneous fission?

  • Alpha decay (correct)
  • Gamma decay
  • Beta decay
  • Neutron emission
  • How does the alpha emission rate compare to the spontaneous fission rate?

  • Alpha emission rate is higher (correct)
  • Alpha emission rate is negligible
  • Alpha emission rate is equal
  • Alpha emission rate is lower
  • What is the approximate energy of fission for 252Cf?

  • 120 MeV
  • 85 MeV
  • 185 MeV (correct)
  • 220 MeV
  • How does the energy distribution between light and heavy fragments in spontaneous fission compare?

    <p>Light fragments have higher energy</p> Signup and view all the answers

    Why are alpha particles emitted in opposite directions during spontaneous fission?

    <p>To conserve momentum</p> Signup and view all the answers

    What does Ee represent in the context of internal conversion electrons?

    <p>Energy of the internal conversion electron</p> Signup and view all the answers

    Which process is favored in low Z elements due to their small binding energy?

    <p>Auger electron emission</p> Signup and view all the answers

    In alpha decay, what is emitted from the original nucleus?

    <p>Alpha particle</p> Signup and view all the answers

    What is the change that occurs during spontaneous fission?

    <p>Splitting of a heavy nucleus into two roughly equal parts</p> Signup and view all the answers

    What is the typical energy range of Auger electrons?

    <p>$0.1-1$ keV</p> Signup and view all the answers

    What is the relationship between the excitation energy and the binding energy in the context of internal conversion electrons?

    <p>Directly proportional</p> Signup and view all the answers

    What is the unit of specific activity?

    <p>Becquerel</p> Signup and view all the answers

    Which type of radiation can penetrate only a small thickness of material?

    <p>Alpha particles</p> Signup and view all the answers

    How much energy is required for fast energy reactions involving ionization radiation?

    <p>20 MeV</p> Signup and view all the answers

    Which process involves a neutron transforming into a proton and emitting an electron and a neutrino?

    <p>Beta decay</p> Signup and view all the answers

    In nuclear decay, what does the decay constant represent?

    <p>Rate of decay of a radioactive source</p> Signup and view all the answers

    Which radioactive process involves the emission of a helium nucleus?

    <p>$\alpha$ decay</p> Signup and view all the answers

    $^{214}Po$ has a half-life of approximately 164 microseconds. What does this indicate?

    <p>$^{214}Po$ decays rapidly but emits gamma rays slowly</p> Signup and view all the answers

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