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MULTIMEGAWATT BROADBAND MICROWAVE TUBES
STANFORD UNIV CA MICROWAVE LAB
The centipede circuit was adapted for use on the electron stick in such a manner that the amplitude and phase of the growing wave along the beam- circuit interaction length could be measured. The results of this study will be of utmost value in optimizing the many parameters affecting the beam-circuit interaction. Current results of theory and experiment are presented. Tests on the electron stick for the suppression of parasitic oscillations were conducted By covering the entire stick with a thin sheet of directionally resistive mylar, oscillations were removed, up to 30 kV. Two other sources of instability were found and removed feedback oscillations and monotron oscillations. Work on calibration of external load and saturated-beam measurements is described. Studies on space-charge waves in an accelerated parallelflow electron beam in a constant magnetic field were continued. The major emphasis this period was on the analysis of the second-order differential system a discussion of the solutions for certain conditions is presented. Preliminary work on beam-plasma studies is described. The properties of microwave acoustic wave transducers were investigated in order to improve their conversion efficiency and bandwidth.
Quarterly status rept. no. 11, 1 May-31 Jul1964
See also: AD0607450. DOI: 10.21236/AD0610066
Approved for public release; distribution is unlimited. Document partially illegible.