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Proceedings Paper

Spiking phenomena in gyro backward-wave oscillators
Author(s): Anthony T. Lin
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Paper Abstract

A theoretical analysis is presented which is capable of predicting the starting oscillation condition and the eigenmode temporal growth rate of gyro backward wave oscillators. The theoretical predictions are confirmed by computer simulations. The nonlinear saturation mechanism is due to that in the unstable system, the nonlinear electron phase shift induced by the interaction with the wave field results in a virtual end plane which tends to shorten the effective interaction length and brings the system into the marginal stable state. In the system far above threshold, the virtual end plane first oscillates about and eventually approaches the steady state location. This early oscillating behavior of the end plane strongly correlates to the initial pronounced spiking temporal structure in the output power. The spiking structure could be smoothed out if the magnetic field is tapered.

Paper Details

Date Published: 1 April 1992
PDF: 8 pages
Proc. SPIE 1629, Intense Microwave and Particle Beams III, (1 April 1992); doi: 10.1117/12.137117
Show Author Affiliations
Anthony T. Lin, Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 1629:
Intense Microwave and Particle Beams III
Howard E. Brandt, Editor(s)

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