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Proceedings Paper

Harmonic radiation due to nonlinear plasma current in beam-plasma interaction
Author(s): Cai-Dong Xiong; Shenggang Liu
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Paper Abstract

The broadband microwave radiation of electron beam-plasma interaction has gained more attention in recent years for its potential of frequency tunable. The radiation mechanisms of this interaction process are main plasma radiation and electron beam radiation. In this paper, the harmonic radiation mechanism due to nonlinear plasma current is studied. In the case of short beam-plasma interaction, only longitudinal Lamguir wave excited by the beam in plasmas is considered. The current of plasma electrons corresponding to the Langmuir wave is nonliear, and the Fourier analyses show that the current includes higher harmonic components of plasma frequency (omega) p. Under the far-distance radiation approximation, the radiation angle distribution and the radiation power caused by the higher harmonic components of the nonlinear source current are derived. And the radiation fields have higher harmonics of (omega) p. And the dipole radiation may play an important role in plasma radiation.

Paper Details

Date Published: 8 September 1995
PDF: 6 pages
Proc. SPIE 2557, Intense Microwave Pulses III, (8 September 1995); doi: 10.1117/12.218581
Show Author Affiliations
Cai-Dong Xiong, Univ. of Electronic Science and Technology (China)
Shenggang Liu, Univ. of Electronic Science and Technology (China)

Published in SPIE Proceedings Vol. 2557:
Intense Microwave Pulses III
Howard E. Brandt, Editor(s)

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