Dynamical Evolution of Photons in Plasma Waves

TL;DR

This paper explores the behavior of photons in plasma waves using a photon dynamics approach, analyzing effects like acceleration, damping, and trapping in both small and large amplitude plasma waves.

Contribution

It introduces a photon-based dynamical framework to describe photon-plasma interactions, offering insights beyond traditional wave theory.

Findings

Photon acceleration and Landau damping analyzed in linear plasma waves.

Photon trajectories and trapping conditions derived for arbitrary amplitude plasma waves.

Perturbation approach applied to small-amplitude plasma wave interactions.

Abstract

On the viewpoint of corpuscular model an electromagnetic radiation can be regarded as a system composed of photons with different energies and momenta, which provides us a method being different from the Maxwell wave theory to describe the interaction of electromagnetic waves with plasmas. In this paper the evolution behavior of a single photon and the collective effect of a photon system in plasma waves are uniformly described in the frame of photon dynamics. In a small-amplitude plasma wave the modulation of photon dynamical behavior by the plasma wave can be treated as perturbation, and the photon acceleration effect and photon Landau damping are investigated in the linear theory. In a plasma wave with arbitrary amplitude the photon evolution trajectories in phase space and coordinate space are obtained by solving the dynamical equations, and the trapping condition and possibility of photons in the given plasma wave are also discussed.