SCI 270: On Nuclear Technology Practice Problems  

6. High-Energy Particles and Quarks

  1. Give six gauge bosons please.
    Name
    ______________

    ______________

    ______________
    Symbol
     

     

     
    Name
    ______________

    ______________

    ______________
    Symbol
     

     

     

  2. What are the functions of guage bosons?

    ________________________________________________________________________

    ________________________________________________________________________

  3. Give six mesons
    Name
    ______________

    ______________

    ______________
    Quark
    components

     

     

     
    Decay
    products

     

     

     
    Name
    ______________

    ______________

    ______________
    Quark
    components

     

     

     
    Decay
    products

     

     

     

  4. Give five Baryons
    Name
    ______________

    ______________

    ______________

    ______________

    ______________
    Quark
    components

     

     

     

     

     

  5. What are the same between a particle and its antiparticle?

    ___________________________________________________________

  6. Dirac combined the theory of relativity with quantum mechanics to get a theory, which predicted a new state for an electron or a particle in general. In this new state, how does the total energy of the particle change as its speed increases?

    ___________________________________________________________

  7.      
         
    What does this diagram represent in terms of filling of energy states for particles and antiparticles?

    ___________________________________________________________

  8.   -  
      -  
    What does this diagram represent in terms of filling of energy states for particles and antiparticles?

    ___________________________________________________________

  9. The rest mass of an electron is 0.51 MeV.

    What happens to a positron and an electron when they come together?

    ___________________________________________________________

  10. What did C.D. Anderson observe in 1932 in his cloud chamber that led him to the discovery of positrons?

    ___________________________________________________________

  11. Describe the annihilation between a positron and an electron.

    ___________________________________________________________

  12. The rest mass of an electron is 0.51 MeV
    Gamma photons with what energy is most likely to cause a pair production?

    ___________________________________________________________

  13. What are force carriers between charged particles?

    ___________________________________________________________

  14. What are the four forces and what is the order according to their strengths?

    ___________________________________________________________

  15. What does this Fynman diagram represent?

    ___________________________________________________________

Answers to Practice Problems 6 are available, but do your part first. Your skills make your life great and they are yours forever.

e-mail address: cchieh@uwaterloo.ca