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Title: Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field

Abstract

The influence of the magnitude and configuration of the magnetic field on the parameters of electron bunches formed in a multivelocity electron beam is analyzed. It is shown that the use of a cathode unshielded from the magnetic field and a nonuniform magnetic field increasing along the drift space enables the formation of compact electron bunches. The ratio between the current density in such bunches and the beam current density at the entrance to the drift space reaches 10{sup 6}, which results in a substantial broadening of the output microwave spectrum due to an increase in the amplitudes of the higher harmonics of the fundamental frequency.

Authors:
; ;  [1]
  1. Saratov State University (Russian Federation)
Publication Date:
OSTI Identifier:
22614043
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 43; Journal Issue: 2; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLITUDES; BEAM BUNCHING; BEAM CURRENTS; CATHODES; CURRENT DENSITY; ELECTRON BEAMS; ELECTRONS; HARMONICS; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC FIELDS; MICROWAVE RADIATION; MICROWAVE SPECTRA; OSCILLATORS; SPACE CHARGE

Citation Formats

Kalinin, Yu. A., Starodubov, A. V., and Fokin, A. S., E-mail: alexander1989fokin@mail.ru. Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field. United States: N. p., 2017. Web. doi:10.1134/S1063780X17020076.
Kalinin, Yu. A., Starodubov, A. V., & Fokin, A. S., E-mail: alexander1989fokin@mail.ru. Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field. United States. doi:10.1134/S1063780X17020076.
Kalinin, Yu. A., Starodubov, A. V., and Fokin, A. S., E-mail: alexander1989fokin@mail.ru. Wed . "Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field". United States. doi:10.1134/S1063780X17020076.
@article{osti_22614043,
title = {Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field},
author = {Kalinin, Yu. A. and Starodubov, A. V. and Fokin, A. S., E-mail: alexander1989fokin@mail.ru},
abstractNote = {The influence of the magnitude and configuration of the magnetic field on the parameters of electron bunches formed in a multivelocity electron beam is analyzed. It is shown that the use of a cathode unshielded from the magnetic field and a nonuniform magnetic field increasing along the drift space enables the formation of compact electron bunches. The ratio between the current density in such bunches and the beam current density at the entrance to the drift space reaches 10{sup 6}, which results in a substantial broadening of the output microwave spectrum due to an increase in the amplitudes of the higher harmonics of the fundamental frequency.},
doi = {10.1134/S1063780X17020076},
journal = {Plasma Physics Reports},
number = 2,
volume = 43,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2017},
month = {Wed Feb 15 00:00:00 EST 2017}
}