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RTE 1418 Week 2 ch 7
| Question | Answer |
|---|---|
| bremsstrahlung Interactions | Brems interactions may occur only when the incident electron interacts with the force field of the nucleus |
| Characteristic cascade | The reaction of electrons dropping into the holes created during a characteristic interaction until there is only the hole in the outer shell |
| characteristic interaction | May occur only when incident electron interact with and inner-shell electron |
| Characteristic photons | Energy is exactly the difference between the binding energy of the outer and inner shells between which the electron dropped |
| Characteristic peak | Occurs when K-shell emissions reach their effective energy range of 69 keV. |
| incident electron | The electrons from the thermionic cloud that arrive at the anode target |
| target interaction | The actions that take place when the electrons strike their target or focal spot |
| Within the diagnostic x-ray range most photons are produced by __________ interactions. | Bremsstrahlung target |
| The _________ of the exposure is the maximum possible energy for any photon that exits the x-ray tube. | kVp |
| The average primary beam photon has a keV energy of only about _____ percent of the kVp | 30-40 percent |
| Over ____ percent of kinetic energy of the incident electrons is converted to heat | 99 percent |
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