XRAY PRODUCTION Word Scramble
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Question | Answer |
Electrons that travel from cathode to anode | projectile electrons |
Any outer shell electron can fill the void in the inner orbit | CHARACTERISTIC RADIATION |
distance between the filament and the anode | 1-3 cm |
due to ionization of K shell electrons | K x-rays |
Projectile electrons travel at | ½ the speed of light |
Ionization can occur with the other shells | L, M, N, O, P |
K shell x-rays are more energetic than the other x-rays because | there is a greater difference in the binding energy |
K shell | 69 keV |
Tungsten | CHARACTERISTIC RADIATION |
Braking or slowing down radiation | Bremsstrahlung |
99% is thermal heat and 1% is photons | ANODE HEAT |
the electron gives up all or a large amount of its energy | High energy bremsstrahlung |
the electron did not give up much energy | Low energy bremsstrahlung |
greatest amount of x-rays emitted with energy approximately 1/3 the maximum of the highest energy photons | Bremsstrahlung radiation |
increase height of the curve and the curve shifts to the right | Increase kVp |
increase height of the curve | Increase mAs |
decreases height of the curve and the curve shifts to the right | Filtration |
Projectile electron loses its kinetic energy in an interaction with a nuclear field of a target atom | Bremsstrahlung Radiation |
At 60 kV | .5% x-ray production |
At 100 kV | 1% x-ray production |
% of the kinetic energy of the projectile electrons is converted to heat | 99 |
Doubling the x-ray current causes the heat | to double |
created when projectile electrons interact with orbital electrons but there is not enough energy to remove the electrons from the target atoms (ionize the atom) and produce x-rays | Anode heat |
Created by:
hakrrins
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