Helix-plasma coupling

Abstract

As efforts continue to effectively utilize the microwave frequencies a need is apparent for a traveling wave type device capable of handling greater power at higher frequencies . One possible solution is the plasma microwave amplifier tube. This paper discusses an analysis of the plasma - helix coupling problem which may hopefully lead to development of such a device whereby the R. F. energy is coupled directly to the plasma with a helix, rather than coupling to an electron beam as has been the case heretofore. A theoretical analysis is presented, and the computer solution to the analytical equations evolved and the resulting w-B plots are included. This writer wishes to express his appreciation for the assistance and inspiration provided by Dr. Glen A„ Gray of the U. S, Naval Postgraduate School in carrying out this investigation.