Formation of space-charge bunches in a multivelocity-electron-beam-based microwave oscillator with a cathode unshielded from the magnetic field
- Authors: Kalinin Y.A.1, Starodubov A.V.1, Fokin A.S.1
-
Affiliations:
- Saratov State University
- Issue: Vol 43, No 2 (2017)
- Pages: 191-195
- Section: Charged Particle Beams
- URL: https://journals.rcsi.science/1063-780X/article/view/186451
- DOI: https://doi.org/10.1134/S1063780X17020076
- ID: 186451
Cite item
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 106, 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.
About the authors
Yu. A. Kalinin
Saratov State University
Email: alexander1989fokin@mail.ru
Russian Federation, Saratov, 410012
A. V. Starodubov
Saratov State University
Email: alexander1989fokin@mail.ru
Russian Federation, Saratov, 410012
A. S. Fokin
Saratov State University
Author for correspondence.
Email: alexander1989fokin@mail.ru
Russian Federation, Saratov, 410012