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27 Dec 2004

Volume 85, Issue 26, pp. 6323-6432

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Appl. Phys. Lett. 85, 6409 (2004); http://dx.doi.org/10.1063/1.1839274 (3 pages)

Peter D. D. Schwindt, Svenja Knappe, Vishal Shah, Leo Hollberg, John Kitching, Li-Anne Liew, and John Moreland
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Cathode priming of a relativistic magnetron

M. C. Jones, V. B. Neculaes, Y. Y. Lau, R. M. Gilgenbach, and W. M. White

Appl. Phys. Lett. 85, 6332 (2004); http://dx.doi.org/10.1063/1.1841454 (3 pages) | Cited 21 times

Online Publication Date: 17 December 2004

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A cathode priming technique of a relativistic magnetron is analyzed via a three-dimensional particle-in-cell simulation. By imposing a threefold azimuthal variation on the emitting cathode of a six-cavity relativistic magnetron, the electrons are prebunched at birth. This leads to fast startup of the pi mode with three electron spokes. Suppression of unwanted modes during startup is observed in the simulation.
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84.40.Fe Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.)
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