Chapter 6
Diagnostic X-ray sources from the inside
6.1 Working principle and types of medical X-ray tubes
Figure 6.1 shows visible light from the vicinity of a hot X-ray focal spot, the epicenter of an X-ray system. Thermal management is the key task in X-ray generation. As discussed in Chapter 2, just about 1% of the electron energy is converted into precious X-ray energy by inelastic scattering of electrons at atomic nuclei. The low total conversion factor, further downscaled by the tiny ratio of used versus generated X-rays, results in a total efficiency ratio for diagnostic ...
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