Title :
Effect of slow wave structure length on microwave emission from a high-power backward-wave oscillator
Author :
Yatsuzuka, M. ; Sumitani, Y. ; Hashimoto, Yo ; Nobuhara, Shohei
Author_Institution :
Dept. of Electr. Eng., Himeji Inst. of Technol., Hyogo, Japan
Abstract :
Summary form only given. Effect of slow wave structure length on microwave emission from a backward-wave oscillator (BWO) with an intense relativistic electron beam was studied experimentally. The slow wave structure of a circular waveguide with square-wave wall of 57 periods maximum is constructed from individual rings for each period, then its length can be easily changed in any period. The inner and outer radii of the waveguide structure are 1.4 cm and 2.0 cm, respectively. The length of each ring, or one period, is fixed in 0.9 cm, while the length of inner radius section can be exchanged in different length. An annular electron beam with the energy of 300 kV, current of 2 kA, duration of 50 ns, and outer radius of 0.8 cm propagates in the axial magnetic field of 1.5 kG.
Keywords :
backward wave oscillators; circular waveguides; electron beams; magnetic fields; relativistic electron beam tubes; slow wave structures; 1.5 kG; 2 kA; 300 kV; BWO; annular electron beam; axial magnetic field; circular waveguide; high-power backward-wave oscillator; intense relativistic electron beam; microwave emission; slow wave structure length; square-wave wall; Cities and towns; Distortion measurement; Educational institutions; Electron beams; Electronics industry; Industrial electronics; Microwave oscillators; Microwave propagation; Microwave technology; Shape measurement;
Conference_Titel :
Plasma Science, 1996. IEEE Conference Record - Abstracts., 1996 IEEE International Conference on
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3322-5
DOI :
10.1109/PLASMA.1996.551646
