X Ray Photon Production Flashcards
What are the 3 components of a x ray tube
Tube insert
Tube housing (tube shield)
Light beam diaphragm
What is the tube housing / shield
Provides protection from radiation and electrical hazards resulting from tube insert
What is the light beam diaphragms
Provides protection from radiation hazards resulting from the tube insert
When are x ray photons produced
When fast moving electrons are suddenly stopped by the impractical of a metal target
What is the cathode
Where the moving electrons are accelerated from
what is the anode
The large metal target that stops the electrons
Which energy type is converted in to x ray photons
Kinetic energy
What is thermionic emission
When electrons are emitted from the cathode
What happens to the kinetic energy of a material when heated
It increases and increases the severity of the collisions of the atoms so they are more energetic
Which layer of electrons in thermionic emission are the most loose
Outer electrons
What happens to electrons near the surface of the material in thermionic emission
The kinetic energy causes some of them to be liberated from the material
What does each liberating electron leave the material with
A net positive charge
When is a state of equilibrium created in the space charge effect
When the rate of electrons are liberated from the material equals the rate of electrons that are attracted back into the material
Which metal is mainly used
Tungsten
