CESIUM VAPOR CATHODE DEVELOPMENT.
Final technical rept., 1 Aug 65-30 Aug 66,
RADIO CORP OF AMERICA LANCASTER PA ELECTRONIC COMPONENTS AND DEVICES
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The objective of the program was to develop design data to establish feasibility of using a cesium vapor cathode in a practical tube type. The theoretical investigation indicated that in klystrons, traveling wave tubes and backward wave oscillators the cesium cathode has definite possibilities for application. A practical design of a cesium vapor cathode produced 330 amperes per square centimeter which was extracted from a 0.030 inch diameter cathode exit aperture and was accelerated to a beam potential of 8KV under 5 microsecond pulsed DC conditions. Using magnetic focusing, beam transmissions, efficiencies of up to 90 can be obtained through a 0.060 inch diameter, one inch long drift tube. Cesium trapping, recirculation and gettering techniques were also investigated in conjunction with studies of the effects of cesium reaction with various materials used in electron tube fabrication. Author
- Electrical and Electronic Equipment