Accession Number : AD0841853

Title :   RELATIVISTIC EFFECTS IN THE TRAVELING-WAVE AMPLIFIER.

Descriptive Note : Final rept. on Phase 1,

Corporate Author : MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB

Personal Author(s) : Tallerico, P. J.

Report Date : SEP 1968

Pagination or Media Count : 257

Abstract : A relativistically correct two-dimensional theory is developed for the analysis of high-power, axially symmetric traveling amplifiers in order to investigate the physical phenomena involved in the interaction process. An approximate model which includes the effects of magnetic flux linking the cathode is developed for dc relativistic electron flow; the corresponding equilibrium solutions are used to establish the parameters in the nonlinear theory. A set of nonlinear integro-differential equations for the system is derived from the relativistic Lorentz equations of motion, the one-dimensional equivalent transmission-line equation, the wave equation and the continuity of charge relation. The above general equations are applied to two electron stream models: the first is a ring model which permits the effects of nonlaminar flow and space-charge forces to be evaluated. The second model employs approximate laminar-flow space-charge force expressions. Numerical solutions are presented and discussed, with the major emphasis on the disk-model solutions. Some topics in the linearized theory of the traveling-wave tube are discussed. Several of the large-signal results are suggested by the linear theory. (Author)

Descriptors :   (*TRAVELING WAVE TUBES, INTERACTIONS), MICROWAVE AMPLIFIERS, ELECTRON BEAMS, ELECTROMAGNETIC RADIATION, THEORY, EQUATIONS OF MOTION, SPACE CHARGE.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE