The Generation Of High Power Microwave Radiation From Intense Relativistic Electron Beams

This report provides a basis for evaluating the current and near- future development of relativistic-electron-beam (REB) technology for the generation of microwave radiation. Magnetrons, gyrotrons, and Raman scattering are examined in some detail and references are cited for several other conversion schemes. The status of repetitively pulsed REB generation is then reviewed and two hypothetical systems are constructed from the conversion schemes and generators that were considered earlier. Finally, some of the advantages (such as high power and compact size) and disadvantages (such as unproven technology) are summarized. (Author).

During the last few years, the application of intense, relativistic- electron beams to the generation of electromagnetic radiation at wavelengths ranging from 10 cm down to fraction of a millimeter has enabled significant advances to be made in peak power capabilities. The purpose of this review is to summarize the status of these advances and to describe briefly the nature of the several mechanisms involved.

Spurred by the development of high-current, high-energy relativistic electron beams, this books delves into the foundations of a device- and geometry-independent theoretical treatment of a large collection of interacting and radiating electron bunches. Covers a broad swath of topics, from the radiation emission of a single charged particle to collective behaviour of a high-density electron bunch, to application in modern sytems.

Radiation from an intense relativistic electron beam at submillimeter wavelengths has been measured with bandpass and high-pass filters. Radiated power about 100 kW has been measured in the passband 390 micrometers - 540 micrometers. The generation of this radiation depends on giving the electrons a large energy component transverse to the magnetic field. Coherent wave generation mechanisms which may account for the observed radiation are discussed. (Author).