H D XRAY PRODUCTION
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Electrons that travel from cathode to anode | projectile electrons
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| Any outer shell electron can fill the void in the inner orbit | CHARACTERISTIC RADIATION
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| distance between the filament and the anode | 1-3 cm
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| due to ionization of K shell electrons | K x-rays
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| Projectile electrons travel at | ½ the speed of light
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| Ionization can occur with the other shells | L, M, N, O, P
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| K shell x-rays are more energetic than the other x-rays because | there is a greater difference in the binding energy
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| K shell | 69 keV
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| Tungsten | CHARACTERISTIC RADIATION
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| Braking or slowing down radiation | Bremsstrahlung
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| 99% is thermal heat and 1% is photons | ANODE HEAT
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| the electron gives up all or a large amount of its energy | High energy bremsstrahlung
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| the electron did not give up much energy | Low energy bremsstrahlung
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| greatest amount of x-rays emitted with energy approximately 1/3 the maximum of the highest energy photons | Bremsstrahlung radiation
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| increase height of the curve and the curve shifts to the right | Increase kVp
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| increase height of the curve | Increase mAs
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| decreases height of the curve and the curve shifts to the right | Filtration
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| Projectile electron loses its kinetic energy in an interaction with a nuclear field of a target atom | Bremsstrahlung Radiation
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| At 60 kV | .5% x-ray production
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| At 100 kV | 1% x-ray production
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| % of the kinetic energy of the projectile electrons is converted to heat | 99
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| Doubling the x-ray current causes the heat | to double
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| 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
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Created by:
hakrrins
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