Plasma-object diagnostics via resonant transition radiation from an electron bunch

Abstract

The resonant transition radiation from an electron charge that moves along the concentration gradient of a cold isotropic plasma is calculated. The possibility of using this radio-emission for inhomogeneous plasma diagnostics is discussed. Measurements of this kind of radiation in a planar-stratified cold isotropic plasma give the possibility of finding out the profile function of the plasma concentration profile (parts of the plasma density profile where the density is increased over its previous maximum value along the direction of the plasma bunch velocity).

The evolution of a modulated electron beam in a dense plasma barrier

“…Experiments [4,5] also demonstrated that plasma barriers' transillumination using beams with large current densities is impossible, and simulation results [14] confirmed and explained this conclusion.…”

“…The problem of the evolution of modulated electron beams in plasma is significant due to its possible applications in areas such as dense plasma barrier transillumination for electromagnetic waves using electron beams, the planning of experiments on the injection of electron beams into space and ionosphere plasma and the interpretation of their results, and the diagnostics of inhomogeneous plasma via transition radiation of electron beams [1][2][3][4][5][6][7].…”

Dynamics of Charged Bunches in the Wakefield Excited by Them in Plasma

“…While determining whether the reconstruction of a density profile in an inhomogeneous plasma with the use of the transition radiation emitted by modulated beams and bunches of charged particles is possible, the fixed current approximation was used (see, e.g., work [13]); i.e. the dynamics of those particles under the action of excited wakefields was neglected.…”

“…The possibility of constructing the wakefield accelerators was confirmed experimentally (see, e.g., [12]). The problem of the wakefield excitation is also of interest owing to a possibility to diagnose an inhomogeneous plasma, by analyzing the transition radiation emitted by charged particles and bunches [13].…”

Dynamics of Short Electron Bunches and Wakefields Excited by Them in Plasma with and without a Longitudinal Magnetic Field

“…ANISIMOV, M.A. SHCHERBININ, 2016 inhomogeneous plasma diagnostics through the analysis of the transition radiation emitted by charged particles and bunches [15], as well as owing to their capability to focus electron bunches [16].…”