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Laura Nappi online course > (*-*) ELECTRON AND PHOTON INTERACTIONS > Flashcards

(*-*) ELECTRON AND PHOTON INTERACTIONS Flashcards

1
Q

_____ interactions produce photons

A

electron

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2
Q

electron interactions occur at the ____ in diagnostic imaging

A

target // anode

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3
Q

photon interactions are how _____ interact with matter

A

xrays

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4
Q

BREMS and Characteristic are Photon or Electron interactions?

A

electron

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5
Q

BREMS or Characteristic
occur NEAR the nucleus

A

BREMS

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6
Q

BREMS or Characteristic occur with orbiting e-

A

Characteristic

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7
Q

BREMS or Characteristic occur in either MV or KV ranges

A

BREMS

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8
Q

BREMS or Characteristic occur in only KV range

A

Characteristic

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9
Q

what is the only electron interaction to occur in MV range?

A

BREMS

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10
Q

which shell is closest to atomic nucleus?

A

k

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11
Q

which shell has the highest binding energy/produce the highest energy?

A

k - closet to atomic nucleus

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12
Q

which shell produces the most useful in diagnostic xrays?

A

k shell (inner shell) - because farther from atomic nucleus, less energy

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13
Q

does the cascade effect (to stabilize the atom) happen with BREMS or Characteristic?

A

Characteristic

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14
Q

the following is about Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect? -

  • photon interacts with inner shell e-
  • energy of photon is absorbed by electron (most common interaction in diagnostic range)
A

Photoelectric effect

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15
Q

the following is about Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect? -

  • photon interacts with outer shell e-
  • no energy lost but gets excited
A

Coherent scattering

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16
Q

the following is about Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect? -

  • photon interacts with outer shell e-
  • most common interaction in radiation therapy
A

Compton scattering

17
Q

the following is about Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect? -

  • photon interacts with the nucleus
  • neutron is released after interaction
  • neutron contamination
A

Photodisinigration

18
Q

the following is about Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect? -

  • photon interacts with nucleus
  • photon disappears and then reappears as an e- pair
  • threshold of >1.22 MeV
A

Pair Production

19
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

photon interaction –> Coherent

20
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

photon interaction –> compton

21
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

photon interaction – pair production

22
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

electron interaction –
characteristic

23
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

photon interaction – photdisinigration

24
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

electron interaction – BREMS

25
Q

the following is a diagram of which interaction – BREMS, Characteristic, Compton scattering, Coherent Scattering, Pair Production, Photodisinigration or Photoelectric effect?

A

photon interaction –
photoelectric effect

26
Q

when there is 10 MV or greater interacting with collimating jaws what photon interaction is taking place?

A

photodisinigration - because neutron scatter is created

Laura Nappi online course (54 decks)

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