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1. In the photoelectric absorption process:
- The vacancy from the photoelectron is filled from an inner shell electron
- All of the energy of the photon is passed to the free electron
- The vacancy from the photoelectron is filled by an electron from an orbital (shell) further out in the atom
- No ionisation of the atom takes place
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Other questions in this quiz
2. The linear attenuation coefficient:
- Defines the probability of absorption or scattering process taking place
- Defines the fractional reduction in X-rays per unit mass of the attenuator
- Is higher for fat than soft tissue for the same photon energy
- Decreases attenuation per cm of the attenuation medium
3. Which interaction process does not take place in the range of intensities of a diagnostic beam?
- Pair production
- Photoelectric absorption
- Compton scatter
- Coherent scatter
4. Which statment bes describes electrons
- No charge with an atomic weight of 1
- Negative charge with an atomice weight of 1/1840 that of a proton
- positive charge with an atomice weight of 1/1840 that of a proton
- Negative charge with an atomic weight of 1
- Positive charge with an atomic weight of 1
5. Mass attenuation increases with:
- Increasing beam energy
- Electron density
- Increasing temperature of the material
- Decreasing mass number
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