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1. Background and classification
Over the years, electron tube technologies have penetrated many areas of industry and science. They use a beam of high-energy electrons, accelerated by a high voltage (from one to several hundred kilovolts), which pass through a vacuum envelope. This description encompasses devices that are not covered here: X-ray sources ("Coolidge tubes"), brightness amplifiers (or "image intensifiers": IIL and IIR), photomultipliers (PM), electron sources, and of course cathode ray tubes (CRT: Cathode Ray Tube) and particle gas pedals, both large ("light sources" like SOLEIL) and small (radiotherapy equipment, for example). The ones we're interested in here are electron tubes where, through a variety of processes, part of the beam's energy is converted into a radiofrequency (RF) electromagnetic wave. In the remainder of this article, the term "electron tube" will be reserved for this family of components,...
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Background and classification
Electronic tube technologies
Bibliography
Events
The proceedings issue of the IVEC (International Vacuum Electronics Conference, an annual event sponsored by the IEEE) is the essential publication for keeping abreast of developments in electronic tube technologies and their applications.
Statistical and economic data
The list of players is as complete as possible, but inevitably contains a few omissions, which the author hopes will not be held against him. Size differences between these players are not indicated, as they can be significant.
The industrial players (table 1...
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