14 December 1992 Nonlinear theory of coherent fast wave radiation from spatiotemporally modulated gyrating electron beams
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Proceedings Volume 1929, 17th International Conference on Infrared and Millimeter Waves; 19294F (1992) https://doi.org/10.1117/12.2298276
Event: 17th International Conference on Infrared and Millimeter Waves, 1992, Pasadena, CA, United States
Abstract
A multi-mode nonlinear analysis and particle simulation code is developed to analyze the generation of radiation at a harmonic of the rotation frequency for a spatiotemporally modulated gyrating electron beam in a cylindrical waveguide. For a device employing 150 kV, 6.7 A cold beam and a 18.8 GHz pump, nonlinear simulations show a 5th harmonic conversion efficiency of 55% at 94 GHz in a linearly tapered magnetic field. A nonlinear magnetic field taper which preserves exact phase matching gives an efficiency of 70%. The efficiency is not sensitive to axial velocity spread.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. K. Ganguly, "Nonlinear theory of coherent fast wave radiation from spatiotemporally modulated gyrating electron beams", Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19294F (14 December 1992); doi: 10.1117/12.2298276; https://doi.org/10.1117/12.2298276
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