Test 2 Physics (odd)

Card Set Information

Author:
RadiationTherapy
ID:
263717
Filename:
Test 2 Physics (odd)
Updated:
2014-03-02 11:33:12
Tags:
radiation therapy
Folders:
Mosbys
Description:
chapter 3 physics
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user RadiationTherapy on FreezingBlue Flashcards. What would you like to do?


  1. What are the differences between electrons and protons
    • Electrons are light, negatively charged particles that collide and interact with other particles.
    • Protons are heavy, positive charge particles that only interact with electrons.
  2. During xray production, the resulting xray beam comes from electrons colliding with the target causing interactions such as
    • characteristic radiation
    • Bremsstrahlung radiation &
    • Auger electrons
  3. The positive side of the basic x-ray tube is know as the _______
    Anode
  4. The ratio of xray to heat during xray production is variable depending on the __________ of electrons transversing the tube.
    Maximum energy
  5. An _________ collision is one in which the incoming electron gives all of its energy to the electrons it encounters.
    Elastic
  6. Name the photon interactions
    • photon disentintegration
    • coherent scattering
    • photelectric effect
    • compton effect
    • pair production
  7. Name the electron interactions
    • bremsstrahlung
    • characteristics
  8. Regarding isotopes, isotopes are an element that have the same # of ____ but a different # of neutrons
    protons
  9. Match these
    ___isotopes___isobars___isotones___isomerA. IR192m IR192m
    B. 27Fe59, 27Fe58
    C. 28NI60, 31Ga60
    D. 11Na22, 10Ne21
    • A. isomer
    • B. isotope
    • C. isobar
    • D. isotone
  10. If using a tungsten target, the fx of 4 MeV electrons converted to photons is
    • .1036 or 10.36%
    • F=3.5X10^-4(74)(4MeV)
    • F=.1036
  11. The probability of photoelectric interaction_______ with increasing energy and ________ with the atomic # of the medium.
    • decreases
    • increases
  12. A neutral atom that loses an electron by ionization is called a
    positive ion
  13. A certain atom has binding energies of 70eV in the L shell and 10eV in the M shell. During an M shell to L shell transition, the photon emitted will have the energy of ____
    60ev
  14. An atom is neutral if the # of its electron is = to its
    protons
  15. The photons produced during the orbital transitions of electrons from a higher to lower energy are called
    characteristic radiation
  16. 2 or more chemicals with the same chemical formula, but having difference nuclear states are known as
    isomers
  17. How many disintegration per min are there in 1 Ci?
    3.7 X 1010 dpm
  18. On Jan 1, we receive 80 mCi of an isotpe with a 1/2 life of 8 days. The activity remaining on Jan 25 would be
    • 10 mCi
    • A=80(.5)^(24/8)=
    • A=80 (.5)^3)
    • A=80 (.125)
    • A=10
  19. The wavelength of xrays are measured in
    angstroms
  20. The photoelectric process is essentially an interaction between a photon and a ______ electron
    bound
  21. A deutron is the nucleus of an isotope of H2. Which of the following is true?
    A. it has a mass # of 2
    B.it has an atomic # of 2
    C. it has a positive charge of 2
    D. is has an energy of 2 MeV
    A
  22. The probability that a photon interacts with a material is _____ to the attenuation coefficient
    proportional
  23. Out of Alpha, Beta, Proton and Neutrons, which is produced during natural radioactive decay
    Alpha
  24. Out of Alpha, Beta, Proton and Neutrons, which can carry a + or - charge
    Beta
  25. Out of Alpha, Beta, Proton and Neutrons, which has helium nucleus
    Alpha
  26. Out of Alpha, Beta, Proton and Neutrons, which has hydrogen nucleus
    Proton
  27. Out of Alpha, Beta, Proton and Neutrons, which has greatest internal hazard
    Alpha
  28. Out of Alpha, Beta, Proton and Neutrons, which cannot ionize directly and interacts with only the nucleus
    neutron
  29. Out of Alpha, Beta, Proton and Neutrons, which may be referred to as an electron or positron
    beta
  30. Out of Q- Quantity, H-quality, and B for both, which is affected by altering time of exposure
    Quantity
  31. Out of Q- Quantity, H-quality, and B for both, which is affected by altering tube current
    Quantity
  32. Out of Q- Quantity, H-quality, and B for both, which is affected by altering target material
    Quality
  33. Out of Quantity, quality, or both, which is affected by altering distance
    Both Q/B
  34. Out of Q- Quantity, H-quality, and B for both, which is affected by altering filtration
    Both H/B
  35. Out of Q- Quantity, H-quality, and B for both, which is affected by altering kVp
    Quality
  36. Out of Q- Quantity, H-quality, and B for both, which is affected by altering generator type
    Both
  37. I131 and I125 have different #s of
    neutrons
  38. Neutron decay ______ (is/is not) a type of nuclear decay.
    is not
  39. The radioactive decay of a radioisotope is characterized by its:
    Decay constant
  40. The energy of an electromagnetic radiation is _________ proportional to its wavelength.
    Inversely

    energy <inversely> wavelength
  41. The energy of an electromagnetic radiation is _________ proportional to its frequency.
    Directly

    energy<directly>frequency
  42. Cobalt 60 decays by ______.
    Beta minus
  43. To interact by photoelectric effect, the interacting photon must have energy equal or greater than the :
    Binding energy of the orbiting electron
  44. Carbon 14 and Nitrogen 14 are:
    • Isobars
    • (same mass)
  45. When a long-lived radionuclide decays to a short-lived daughter, it is known as ________ equilibrium.
    Secular
  46. ________ implies the removal of an electron from the atom.
    Ionization
  47. When a radionuclide decays, radiation is emitted from the ________.
    nucleus

What would you like to do?

Home > Flashcards > Print Preview