Accession Number : AD0693025

Title :   VACUUM TUBE RESEARCH PROJECT.

Descriptive Note : Quarterly status rept. no. 18, 1 Jul-30 Sep 57,

Corporate Author : CALIFORNIA INST OF TECH PASADENA ELECTRON TUBE AND MICROWAVE LAB

Personal Author(s) : Field,Lester M. ; Gould,Roy W.

Report Date : 30 SEP 1957

Pagination or Media Count : 37

Abstract : Work to date on the plasma amplifier and measurement of electron density by microwave methods is summarized. The equations which govern the large signal behavior of beam-type crossed field tubes was formulated. These equations are being programmed for numerical solution on the IBM 704 digital computer. A new mode of wave propagation on finite diameter magnetically focused electron beams was found in the course of studying noise propagation near the potential minimum of a diode. A few of the important properties were explored theoretically. Propagation is not dependent on the electron drift velocity and a preliminary experimental verification was obtained using a plasma-filled waveguide. (Author)

Descriptors :   (*ELECTRON TUBES, SCIENTIFIC RESEARCH), AMPLIFIERS, PLASMAS(PHYSICS), MICROWAVE EQUIPMENT, CROSSED FIELD DEVICES, INTERACTIONS, PROPAGATION, BACKWARD WAVE OSCILLATORS, WAVEGUIDES, ELECTRON BEAMS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE