MILLIMETER WAVE GENERATION BY PLASMA.
Final engineering rept.
GENERAL ELECTRIC CO SCHENECTADY N Y
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The purpose of this experiment was to demonstrate the feasibility of generating a radiating electromagnetic wave by the interaction of a velocity modulated electron beam with a resonant plasma and coupling this radiated energy directly into a waveguide or a coaxial line. This experiment is based on theoretical studies which covered the interaction of space charge waves with fully ionized resonant plasmas. A standard 9 Gc electron gun and helix configuration was utilized to produce and feed a velocity modulated electron beam into a magnetically compressed, resonant plasma generated in mercury vapor. The work done indicates that fast wave conversion will work best at the higher frequencies since the interaction length will be shorter and more probable of being achieved in a plasma.