Dynamics of electron beam instability development in microwave sources

Eduard Vardges Rostomyan

doi:10.1117/12.391806

14 July 2000 Dynamics of electron beam instability development in microwave sources

Eduard Vardges Rostomyan

Proceedings Volume 4031, Intense Microwave Pulses VII; (2000) https://doi.org/10.1117/12.391806
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

Evolution of initial perturbation in the case of electron beam instability development in various systems is investigated generally. The approach is based on equation for slowly varying amplitude of induced wave packet. It is shown that the space-time dynamics of fields in the case of beam instability development is described by partial differential equation of third order independently on system geometry, presence of external fields, specific parameters etc. This equation is solved and analytical expression for fields' space-time structure is obtained and analyzed. The shape of induced wave packet is presented. The velocities of unstable perturbations vary between the group velocity of resonant wave (without beam) and beam velocity. The dependence of the growth rates of the perturbations from their velocities is obtained.

Citation Download Citation

Eduard Vardges Rostomyan "Dynamics of electron beam instability development in microwave sources", Proc. SPIE 4031, Intense Microwave Pulses VII, (14 July 2000); https://doi.org/10.1117/12.391806

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