Radiation from Relativistic Electrons in Periodic Structures "RREPS-23" & Electron, Positron, Neutron and X-ray Scattering under External Influences "Meghri-23"

Smith-Purcell radiation from surface plasmons

18 Sept 2023, 16:00

20m

Oral Diffraction Radiation, Smith–Purcell Effect e–/e+ beams interaction in solids

Speaker

Alexey Tishchenko (National Research Nuclear University MEPhI (RU))

Description

Smith-Purcell radiation (SPR) is a widely known effect considered as prospective for ultra-relativistic electron beam diagnostics. Yet, the applications of this effect are not limited to physics of high-energy accelerators: nowadays, it is investigated as the way for generation of radiation from plasmonic and meta-structures.
In this report i consider theoretically SPR from the periodical structures created on a plane surface by the field of plasmons running along the surface. The way of calculations for this problem can be similar to that which I used recently calculating SPR from a standing field of a laser along the surface and direction of motion of an electron beam. I calculate the SPR field and intensity and show how it is sensitive to the surface wave and the electron beam characteristics.