X-ray Photon Production Flashcards
1
Q
What are the main components of an X-ray tube
A
Tube insert -
Tube housing/shield - protection from radiation & electrical hazards
Light-beam diaphragm - protection from radiation
2
Q
How are X-ray photons produced
A
Produced when fast-moving electrons (accelerated by cathode) are suddenly stopped by the impact with the anode
The kinetic energy of electrons is converted into X-ray photons and into heat
3
Q
What is thermionic emission
A
Electrons emitted from cathode:
Material heated so KE of atoms increases. Outer electrons are more loosely bound so when collisions occur some electrons are liberated leaving the material with a + charge
4
Q
What happens if you increase the tube current
A
The number of liberated electrons increases
