Study on the region of instable beam-wave interaction in a relativistic backward wave oscillator

HUANG Feng; WANG Dong; XING Qing-zi; DENG Jing-kang

Volume 17 Issue 10

Oct. 2005

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xu yewei, luo xuan, zhu fanghua, et al. Fabrication of low density poly(vinylcyclohexane) foams[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

HUANG Feng, WANG Dong, XING Qing-zi, et al. Study on the region of instable beam-wave interaction in a relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2005, 17.

xu yewei, luo xuan, zhu fanghua, et al. Fabrication of low density poly(vinylcyclohexane) foams[J]. High Power Laser and Particle Beams, 2010, 22.

Citation:

HUANG Feng, WANG Dong, XING Qing-zi, et al. Study on the region of instable beam-wave interaction in a relativistic backward wave oscillator[J]. High Power Laser and Particle Beams, 2005, 17.

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Study on the region of instable beam-wave interaction in a relativistic backward wave oscillator

1.
Department of Physics,Tsinghua University,Beijing 100084,China

Publish Date: 2005-10-15

Abstract

Abstract

A theoretical research was developed for relativistic backward wave oscillators (RBWO) composed of a thin annular electron beam guided by a strong magnetic field through a slow wave structure (SWS) consisting of a cylindrical waveguide with a sinusoidally varying wall radius. Firstly, the analytic expressions of dispersion relations were derived from Swegle's analytic theory of RBWO. Then one code written by Matlab was used to solve the dispersion equations. Through drawing contour lines in the complex plane, the whole dispersion curves of SWS with electron beams were obtained and detailed study on the region of instable beam-wave interaction was carried out. The microwave growth rate and energy efficiency were calculated too. The simulation results illustrate that this interaction, which
- relativistic backward wave oscillator,
- slow wave structure,
- instable beam-wave interaction,
- dispersion curve,
- microwave growth rate,
- energy efficiency

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