Speaker
Dr
Alexey Tishchenko
(National Research Nuclear University "MEPhI")
Description
In this report we discuss the similarities and differences of dispersion relations for different types of radiation in periodic structures – resonant transition radiation from multilayered stack of films, Smith-Purcell radiation, parametric X-ray radiation in crystals, undulator radiation. We show that the key factor here is the existence of frequency dependent dielectric permittivity leads to a new roots when the integrals with delta-functions are taken, which in their turn lead to the arising of new addend in the total expressions for spectral or angular distributions. The phenomenon of the so-called “end transition radiation” is discussed as well.
Authors
Dr
Alexey Tishchenko
(National Research Nuclear University "MEPhI")
Ms
Darya Sergeeva
(National Research Nuclear University "MEPhI")
