Linear Stability Of Relativistic Space-Charge Flow In A Magnetically Insulated Transmission Line Oscillator

Raymond W. Lemke

doi:10.1117/12.951788

25 July 1989 Linear Stability Of Relativistic Space-Charge Flow In A Magnetically Insulated Transmission Line Oscillator

Raymond W. Lemke

Author Affiliations +

Proceedings Volume 1061, Microwave and Particle Beam Sources and Directed Energy Concepts; (1989) https://doi.org/10.1117/12.951788
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

The magnetically insulated transmission line oscillator (MILO) is a high power microwave device that combines the technologies of magnetically insulated electron flow and slow-wave tubes. This combination makes the MILO a unique and robust device capable of operating over a wide range of voltages. Microwaves are generated in the MILO via an unstable interaction between slow electromagnetic modes and space-charge waves. We present a linear analysis of this microwave instability that includes the physics of magnetically insulated electron flow. A dispersion relation is derived for transverse magnetic (TM) modes in a cylindrical MILO. The dispersion relation is solved numerically to obtain the MILO frequency spectrum and instability growth rates. We compare the linear theory results with numerical simulation, and obtain excellent agreement.

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Raymond W. Lemke "Linear Stability Of Relativistic Space-Charge Flow In A Magnetically Insulated Transmission Line Oscillator", Proc. SPIE 1061, Microwave and Particle Beam Sources and Directed Energy Concepts, (25 July 1989); https://doi.org/10.1117/12.951788

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