Spectrum of Radiation from Rough Surfaces

TL;DR

This paper investigates the spectral-angular intensity of radiation emitted by a charged particle near a rough surface, emphasizing the role of multiple scattering of surface polaritons and its frequency dependence, with potential diagnostic applications.

Contribution

It introduces a model for radiation from charged particles near rough surfaces considering multiple scattering effects on surface polaritons.

Findings

Multiple scattering dominates the radiation intensity.

Radiation intensity shows strong frequency dependence.

Potential use in beam and surface diagnostics.

Abstract

Radiation from a charged particle travelling parallel to a rough surface has been considered. Spectral-angular intensity is calculated in the weak scattering regime. It is shown that the main contribution to the radiation intensity is determined by the multiple scattering of polaritons induced by a charge on the surface. Multiple scattering effects lead to strong frequency dependence of radiation intensity. Possible applications in beam and surface diagnostics are discussed.