How x-ray were discovered and how they work

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Created by
Alazay V

Cards (29)

  • X-rays are produced by the interaction between high energy electrons and matter.
  • To produce x-rays you need 1 the source of electrons 2 method of accelerating electrons and 3rd decelerating electrons and 4th vacuum
  • tungsten - cathode filament (resilient to heat)
  • Anode spins to dissipate heat
  • Higher the atomic number the better it resist to heat
  • electromagnetic induction motor causes rotation of a magnetic field around a wire
  • Port indicates direction
  • immersed oil to keep cool
  • rotor- rotates
  • stator - stays still
  • vacuum inside glass envelope is pyrex
  • protective housing - supports , cools and insulates from high voltage
  • x-ray tube with capable of 70 kvp or more will always have a rotating anode
  • cathode - negatively charged
  • The Anode which is positively charged.And the Glass Envelope which supports the anode and cathode structures.
  • The major components of the x-ray machine include: the cathode, the anode, and the glass envelope
  • The cathode is negatively charged and is a source of electrons
  • The cathode structure includes dual filaments, with only one filament working at a time
  • The focusing cup supports the filaments and guides the electron stream to the target area on the anode
  • Thermionic emission occurs when the x-ray machine is powered up, and the electrons accelerate towards the anode
  • The anode is positively charged and attracts electrons when the exposure button is pressed
  • The anode is made of Tungsten and rotates during operation to spread the build-up of heat along the entire disc
  • The glass envelope is made of pyrex and tolerates high heat levels
  • Tungsten is vaporized from the target surface and settles on the inside glass surface over time
  • The x-ray tube is immersed in oil for cooling and electrical insulation
  • The rotor, made of copper, rotates at high speeds due to the stator producing a strong magnetic field
  • The protective housing is made of metal and supports the x-ray tube, filled with oil for cooling and insulation
  • The housing helps control leakage radiation and minimizes filtration or absorption of the x-ray beam
  • A stationary anode x-ray tube does not rotate and conducts heat out of the tube to the surrounding oil