Energy Transfer and Absorption
Recommended Reading
Learning Objectives
By the end of this section, you will be able to:
- Explain the significance of the energy transfer coefficient in the context of radiation absorption and dose delivery.
Energy Transfer and Absorption Coefficients
Practice!
| Practice 6.2.1 |
|---|
| An incident photon beam of energy 100 keV transfers a mean energy of 60 keV to charged particles in the absorber. If the linear attenuation coefficient is 0.500 mm−1, what is the energy transfer coefficient? |
| A. 0.200 mm−1 |
| B. 0.300 mm−1 |
| C. 0.400 mm−1 |
| D. 0.500 mm−1 |
| Practice 6.2.2 |
|---|
| An incident photon beam of energy 100 keV transfers a mean energy of 60 keV to charged particles in the absorber. The linear attenuation coefficient is 0.500 mm−1. If 1% of the incident energy were re-radiated as Bremsstrahlung or characteristic radiation, what would be the energy absorption coefficient? |
| A. 0.285 mm−1 |
| B. 0.305 mm−1 |
| C. 0.295 mm−1 |
| D. 0.315 mm−1 |
| Practice 6.2.3 |
|---|
| The linear attenuation coefficient is 0.071 cm−1 for 1 MeV photons in water. If the energy absorption coefficient for 1 MeV photons in water is 0.031 cm−1, what is the average energy absorbed in water per photon interaction? |
| A. 0.437 MeV |
| B. 0.563 MeV |
| C. 0.731 MeV |
| D. 0.869 MeV |
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