Title :
High-power microwave generation by excitation of a plasma-filled rippled boundary resonator
Author :
Carmel, Yuval ; Minami, K. ; Lou, Weiran ; Kehs, R.Alan ; Destler, William W. ; Granatstein, Victor L. ; Abe, D.K. ; Rodgers, J.
Author_Institution :
Lab. for Plasma Res., Maryland Univ., College Park, MD, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
An experimental demonstration of a strong enhancement of the interaction efficiency in a high-power relativistic backward-wave oscillator when plasma is injected is presented. Controlled plasma injection enhances the interaction efficiency for the vacuum case by a factor of up to eight to a value of about 40%. A linear theory of electromagnetic wave generation in plasma-loaded corrugated wall resonators is reviewed. A number of physical mechanisms are considered to account for the enhanced interaction, including two variations of a three-wave interaction involving the electron-beam slow space-charge wave, the slow electromagnetic waves in the structure, and the quasi-electrostatic waves in the plasma
Keywords :
backward wave tubes; microwave generation; microwave oscillators; plasma filled waveguides; relativistic electron beam tubes; controlled plasma injection; electromagnetic wave generation; electron-beam slow space-charge wave; excitation; high-power relativistic backward-wave oscillator; interaction efficiency; linear theory; microwave generation; plasma microwave electronics; plasma-filled rippled boundary resonator; plasma-loaded corrugated wall resonators; quasi-electrostatic waves; three-wave interaction; Electromagnetic heating; Electromagnetic scattering; Electron beams; Laboratories; Microwave devices; Microwave generation; Plasma accelerators; Plasma density; Plasma devices; Plasma waves;
Journal_Title :
Plasma Science, IEEE Transactions on
