A TRT Electron Radiation: Transition Between Refractive Indices

ChrisVer
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How can the radiation of electrons in the TRT be described/explained with transition between media of different refractive indices?
 
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Vanadium 50 said:
Did you look at https://en.wikipedia.org/wiki/Transition_radiation and references therein? What part didn't you understand?
the wikipedia does not refer to refractive indices, but rather talks of inhomogeneous media.
 
ChrisVer said:
he wikipedia does not refer to refractive indice

But it does refer to dielectric constants. Do you know the relationship between refractive index and dielectric constant?
 
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