Tube Interactions
What shell is affected during characteristic interactions?
K-shell
What energy does the incident electron have to be to remove the k-shell electron from its shell?
Greater than or equal to the binding energy of the k-shell electron
What is released during Compton scatter?
A Compton electron
What energy is required for a photodisintegration interaction?
10 MeV
Described as wavelike fluctuations of electric and magnetic fields.
Electromagnetic radiation
What is the anode composed of?
Tungsten alloy and rhenium
What is the filling of vacant shells called?
Characteristic cascade
What does the incident x-ray interact with?
A loosely bound outer shell electron
What is the result of a pair production interaction?
A positron and negatron
What are the three ways x-rays interact with matteer?
No interaction, absorption, or scattering.
What does the German term "Bremsstrahlung" mean?
braking or slowing
What happens to the incident electron after it knocks out the k-shell electron?
It is absorbed
The probability of Compton scattering decreases as x-ray energy __________.
What is the energy of the two electrons released in pair production?
0.51 MeV
The product of absorption and scattering
Attenuation
In Bremsstrahlung interactions, what does the projectile electron interact with?
The nucleus
The electron that is removed from the atom of matter is called a _______?
Photoelectron
How does Compton scattering affect image contrast?
It reduces contrast
What is emitted after a photodisintegration interaction?
A nuclear fragment or nucleon
What does differential absorption determine?
The degree of contrast on an image.
In the diagnostic range, most x-rays are _________?
Bremsstrahlung
Photoelectric effect contributes significantly to ________ ________?
Patient dose
During Compton scatter most energy is divided between ________ and ________?
What type of radiation occurs when the positron unites with a free electron and the mass of both particles is converted to energy?
Annihilation radiation
Pure scattering interaction and deposits no energy in material or matter.
Coherent Scattering