Accession Number : AD0668937

Title :   STUDY OF TRANSVERSE WAVE INTERACTIONS.

Descriptive Note : Triannual rept. no. 5, 1 Sep-31 Dec 67,

Corporate Author : UTAH UNIV SALT LAKE CITY MICROWAVE DEVICE AND PHYSICAL ELECTRONICS LAB

Personal Author(s) : Talbot,K. I. ; Durney,C. H. ; Grow,R. W.

Report Date : APR 1968

Pagination or Media Count : 24

Abstract : The purpose of this project is to evaluate analytically and experimentally the interaction of waves in a wave guide with waves on a rotating electron beam. The methods of analysis include use of a general coupled-mode theory, a ballistic computer program, and an experimental evaluation. It has been found that the previous power saturation criteria are invalid because they were based on a one- and two-dimensional model. A possible criterion is presented based on a three-dimensional model. The power output of the tube is still low, but it is expected that magnetic field shaping will increase it. Also, the tube has been observed to oscillate in two different modes separated in frequency by about 50 MHz. (Author)

Descriptors :   (*ELECTROMAGNETIC RADIATION, INTERACTIONS), (*ELECTRON BEAMS, INTERACTIONS), WAVEGUIDES, ROTATION, BACKWARD WAVE AMPLIFIERS, MAGNETIC FIELDS, CYCLOTRON WAVES, MICROWAVE FREQUENCY, EFFICIENCY, MATHEMATICAL MODELS, BACKWARD WAVE OSCILLATORS

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE