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Test

Interaction with matter

bethany.adkins22 11 preguntas

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Preguntas del test (11)

  1. 1Coherent scatter will only occur...
    1. Aat high energies
    2. BWhen the photon has energy greater than the electron binding energy
    3. CAt low photon energies
    4. DAfter a previous interaction
  2. 2The probability of compton scatter occurring is...
    1. AIs proportional to energy
    2. BIs proportional to density squared
    3. CIs proportional to electron density
    4. DIs inversely proportional to energy
  3. 3What happens to the positron produced after pair production?
    1. AIt travels through matter and excites and ionises atoms
    2. BIt is absorbed by an x-ray photon
    3. CIt will interact with the nucleus of an atom
    4. DIt combines with an electron- annihilation
  4. 4In a low energy compton scatter interaction, where is most of the energy deposited?
    1. AThe initial photon
    2. BThe ejected electron
  5. 5Electrons produced in all interactions...
    1. AWill have the same energy as the initial photon
    2. BWill produce a photoelectron
    3. CWill carry some energy from the initial photon
    4. DTransferred to the medium by ionisation or excitations
    5. ECan result in x-ray production
  6. 6How much energy must a photon have to undergo photoelectric interactions?
    1. A1.022meV
    2. BMore than the binding energy of a bound electron
    3. CMore than the binding energy of the k shell
    4. D0.511meV
  7. 7The probability of pair production is...
    1. AIs proportional to energy squared
    2. BIs inversely proportional to z
    3. CIs proportional to energy
    4. DIs proportional to z
  8. 8What is the Linear Attenuation Coefficient (LAC)?
    1. AFraction of photons interacting per gram of material
    2. BFraction of photons interacting per unit thickness of attenuator
    3. CFraction of electrons interacting relative to Z of material
  9. 9To undergo a pair production interaction, how much energy must the initial photon have?
    1. A0.511meV
    2. BEnough to overcome the binding energy of the electron
    3. C1.022meV
    4. D1.022kV
  10. 10What is produced in the photoelectric effect?
    1. AAn electron and a positron
    2. BThe photon is diffracted
    3. CNothing
    4. DAn electron is ejected and a new photon produced.

Información

Descripción
Physical Principles Test sobre Interaction with matter, creado por bethany.adkins22 el 30/04/2013.
Idioma
English
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