TRANSVERSE WAVE AMPLIFICATION IN PERIODIC ELECTROSTATIC AND MAGNETOSTATIC FIELDS.
Abstract
The paper presents a discussion of various aspects of the so-called dc-pumped electron beam amplifiers. The interaction in the pump-field is considered as a coupling of normal modes. It is shown that all dc-pumped amplifiers belong to one of three classes, depending on the type of coupling involved. The basic design of several possible amplifiers is scetched, and some of their fundamental properties are discussed briefly, in particular the noise performance, focusing requirements, and efficiency. Experimental results of two amplifiers are presented, one is based on coupling between cyclotron waves and synchronous waves, and the second is based on coupling between the two synchronous waves. The latter employs a magnetic field reversal for transforming the synchronous waves to cyclotron waves, thus permitting a design with no periodic structures, with potential advantages in high efficiency tubes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1962
- Accession Number
- AD0600914
Entities
People
- Kjell Blotekjaer
Organizations
- Norwegian Defence Research Establishment