2014 Med Phys I Lecture 2.3b PreTest Question Title * 1. Name: Question Title * 2. The probabilities of Bremsstrahlung production for beams of diagnostic energy and therapeutic energy are approximately: 50% and 1% respectively 50% and 10% respectively 1% and 50% respectively 10% and 50% respectively Question Title * 3. Which of the followings is NOT a correct assumption for thin target theory no electron suffers more than 1 collision passing through target an electron can lose any amount of energy up to all of its energy the intensity of radiation emitted in each photon energy interval from 0 to E is constant Bremsstrahlung production is low and stopping powers are reasonably constant Question Title * 4. The energy radiated during Bremsstralung is proportional to: The atomic number of the nucleus The speed of the electron The tube current producing the electron beam Question Title * 5. Which of the following are not necessary conditions for the continuous slowing down approximation to apply? Bremsstrahlung production is low. Target atom has a high Z. Stopping power is reasonably constant All of the above. Question Title * 6. Which of the follwing is not a requirement for an electron target used to produce x-rays? High binding energy High atomic number High heat capacity High melting point Question Title * 7. Are there any issues that are not clear to you at this time? Done