MICROWAVE GENERATION BY MEANS OF INTERACTION WITH ANISOTROPIC MEDIA.
Quarterly progress rept. no. 4, 15 Mar-15 Jun 66,
MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB
Pagination or Media Count:
Harmonic generation caused by the interaction of a modulated electron beam with a plasma is investigated by using the Boltzmann equation and the macroscopic equations of motion. For the model assumed it is seen that the two methods yield the same results to second order. The solution of the macroscopic equations is presented, and the results are presented for the growing wave term of the second harmonic electric field. A new model for the beam-plasma system is assumed in the calculation of characteristic impednance for matching purposes. A finite diameter column in a metallic drift tube is considered and there is a finite static axial magnetic field. The beam electrons are monoenergetic and collisions are neglected. The dispersion equation is developed for the system using the quasi-static approximation. The beam-plasma interaction is analyzed for systems with spatial nonuniformities in the axial direction. The stationary plasma case is analyzed and gain calculations are presented as functions of various beam and plasma parameters and the interaction length. A model for the drifting plasma is developed and further spatial nonuniformities in the transverse plane are considered. Author
- Electrical and Electronic Equipment
- Plasma Physics and Magnetohydrodynamics