MICROWAVE GENERATION BY MEANS OF INTERACTION WITH ANISOTROPIC MEDIA.
Abstract
A perturbation analysis is carried out for a nonlinear beam-plasma system in which a modulated electron beam passes through a stationary cold-electron plasma in the presence of a very strong axial magnetic field. Electron crossover effects are neglected. The generation of harmonics and the mixing of two signals occur within the valid range of signal levels for this analysis. Specific computer results are presented and discussed. An experimental study program for harmonic generation and coupling schemes in beam-plasma systems is outlined. The device consists of a xenon plasma generated by two hot-cathode Penning discharges and an electron beam that can be modulated and demodulated via short helix-type slow-wave structures. This method of coupling is compared with elliptic cavity couplers placed directly around the plasma column. Interactions in one-dimensional, spatially nonuniform beam-plasma systems are analyzed using the coupled-mode approach. The analysis applies to both the Penning ion gauge plasma and the gas discharge plasma. Some closed-form solutions as well as computer results are shown. A general nonlinear theory of beam-plasma systems is developed using a Lagrangian approach. The theory may also be used to investigate two-stream systems. The computer solution of the equations is outlined. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1968
- Accession Number
- AD0841064
Entities
People
- C. A. Brackett
- G. T. Konrad
- Joseph E. Rowe
Organizations
- University of Michigan