# Radiation of a Charge Moving in a Wire Structure

## TL;DR

This paper presents a theoretical method to analyze electromagnetic radiation from relativistic electron bunches in wire lattices, combining antenna theory and numerical simulations to explore potential applications.

## Contribution

It introduces a novel theoretical approach based on vibrator antenna theory and approximate integral equation solutions for modeling radiation in wire structures.

## Key findings

- Method validated with numerical simulations
- Applicable to relativistic charges in wire lattices
- Potential for new applications in particle-wave interactions

## Abstract

A theoretical approach for describing the electromagnetic radiation produced by prolonged electron bunch propagating in the lattice of metallic wires of finite length is presented. This approach is based on vibrator antenna theory and involves approximate solving of Hallen's integral equation. For a single wire, it is also supposed that a wire is sufficiently thin and charge motion is relativistic. For many-wire structures, the approximation similar to kinematic approach of parametric X-ray radiation (PXR) theory is additionally applied. The validity of the method is verified by numerical simulations with COMSOL Multiphysics. Possible applications of interaction between charged particle bunches and artificial wire structures are discussed.