2015 Med Phys I Lecture 3.1d(2) PreTest Question Title * 1. Name: Question Title * 2. According to the differential cross section per unit kinetic energy interval as calculated by the Klein-Nishina coefficient, the probability of electrons produced by Compton scattering at a given energy: Decreases with energy Increases with energy Reaches maxima at 0 and maximum energy Reaches a maximum at intermediate energies Question Title * 3. The assumption of a free electron gas cloud in Compton scatter calculations is accurate at ______ energies. sub-diagnostic diagnostic therapy Question Title * 4. Compton Scattering cross sections are peaked in what direction with respect to increasing energy: Forward Backward Not peaked in any direction Question Title * 5. The linear attenuation coefficient for Compton Scatter is dependent on which of the following? Z effective of the material Density of the material Energy of the incident photon None of the above Question Title * 6. As Z increases, the Compton attenuation coefficient will Always increase Always decrease Increase for low energies Decrease for low energies Question Title * 7. Are there any issues that are not clear to you at this time? Done