Terahertz Cherenkov radiation induced by a self-modulated electron beam in plasma wakefield

In this paper, a novel scheme of generating terahertz radiation is proposed, which considers a relativistic electron beam being modulated by its self-excited plasma wakefield in a plasma-filled slow-wave structure (SWS). Both the dispersion relation and the particle-in-cell simulation show that the...

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Published in:AIP advances 2019-02, Vol.9 (2), p.025025-025025-4
Main Authors: Yang, Shengpeng, Zhou, Qing, Tang, Changjian, Chen, Shaoyong, Xia, Yuxi
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Language:English
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Electromagnetic radiation
Electrons
Particle in cell technique
Plasma
Radiation effects
Relativistic electron beams
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description In this paper, a novel scheme of generating terahertz radiation is proposed, which considers a relativistic electron beam being modulated by its self-excited plasma wakefield in a plasma-filled slow-wave structure (SWS). Both the dispersion relation and the particle-in-cell simulation show that the self-modulation of the beam can act as a mode-selection method to excite the high-harmonics of the SWS and generate terahertz electromagnetic radiation. The present work gives a new thought for researching high-power and tunable terahertz sources.
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subjects Electromagnetic radiation
Electrons
Particle in cell technique
Plasma
Radiation effects
Relativistic electron beams
title Terahertz Cherenkov radiation induced by a self-modulated electron beam in plasma wakefield
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