High Current Density Cathodes For Microwave Tubes

M. E. Read; A. J. Dudas; P. E. Oettinger

doi:10.1117/12.978520

18 November 1989 High Current Density Cathodes For Microwave Tubes

M. E. Read, A. J. Dudas, P. E. Oettinger

Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978520
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States

Abstract

There has been a recent resurgence in the research and development of high power microwave sources, spurred by the growth of pulse power technology, wherein advances in energy storage and pulse forming have made possible the generation of electron beams with peak powers over 4 Terawatts. These beams can generate microwaves and millimeter waves with impressive intensity over a wide frequency range. Unfortunately, these high peak powers have been achieved, with few exceptions, with pulse lengths less than 100 ns, and, therefore low energy content. Moreover, the pulse repetition rate has been very low, with a measured peak of approximately 50 Hz. Such limitations in pulse length and repetition rate have been due to the characteristics of the accelerators and the nature of the cathode sources of the electron beams. However, lately, significant advances have been made in accelerator technology allowing the generation of pulses with microsecond pulse lengths and peak powers of 10 GW.

Citation Download Citation

M. E. Read, A. J. Dudas, and P. E. Oettinger "High Current Density Cathodes For Microwave Tubes", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); https://doi.org/10.1117/12.978520

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