Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
In scintillation detectors, what happens when X-rays fall onto the crystal?
In scintillation detectors, what happens when X-rays fall onto the crystal?
- Flashes of light are produced (correct)
- Electromagnetic waves are generated
- Gas chambers are activated
- Photomultiplier tubes are turned off
What is the role of the photocathode in a photomultiplier tube?
What is the role of the photocathode in a photomultiplier tube?
- Produces X-rays
- Creates positive ions
- Generates flashes of light
- Releases electrons (correct)
Why are gas-ionization detectors based on the principle of ionization?
Why are gas-ionization detectors based on the principle of ionization?
- To generate flashes of light
- To enhance X-ray penetration
- To activate gas chambers
- To produce positive and negative ions (correct)
What is the purpose of the tungsten plates in gas-ionization detectors?
What is the purpose of the tungsten plates in gas-ionization detectors?
Signup and view all the answers
Why must scintillation detectors exhibit a short primary decay time in CT?
Why must scintillation detectors exhibit a short primary decay time in CT?
Signup and view all the answers
What is the main difference between scintillation detectors and gas-ionization detectors?
What is the main difference between scintillation detectors and gas-ionization detectors?
Signup and view all the answers
Flashcards are hidden until you start studying
