|
This article is cited in 2 scientific papers (total in 2 papers)
OPTICS AND NUCLEAR PHYSICS
Does a form factor in Smith–Purcell radiation exist always?
D. Yu. Sergeevaab, A. A. Tishchenkocad a National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia
b Radiation Physics Laboratory, Belgorod National Research University, Belgorod, 308034 Russia
c ITMO University, St. Petersburg, 197101 Russia
d National Research Center Kurchatov Institute, Moscow, 123182 Russia
Abstract:
In the theory of radiation emitted by bunches of charged particles, the effects of coherence are commonly taken into account by multiplying the intensity of radiation generated by a single particle by the form factor of the bunch, which depends on its size, shape, and particle distribution. Here, it is demonstrated that this approach is, generally speaking, incorrect for polarization radiation from a wide class of structures like photonic crystals and metasurfaces. The theory of coherent Smith–Purcell radiation from such structures has been developed. It is shown that the commonly accepted approach is applicable only under two conditions: (i) the observation point lies in the plane containing the trajectory of the bunch and the normal to the surface of the target, and (ii) the radius of the bunch is much smaller than the effective range of the Coulomb field of the moving electrons.
Received: 30.04.2022 Revised: 30.04.2022 Accepted: 04.05.2022
Citation:
D. Yu. Sergeeva, A. A. Tishchenko, “Does a form factor in Smith–Purcell radiation exist always?”, Pis'ma v Zh. Èksper. Teoret. Fiz., 115:12 (2022), 762–768; JETP Letters, 115:12 (2022), 713–719
Linking options:
https://www.mathnet.ru/eng/jetpl6693 https://www.mathnet.ru/eng/jetpl/v115/i12/p762
|
Statistics & downloads: |
Abstract page: | 57 | References: | 13 | First page: | 11 |
|