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Proceedings Paper

High Current Density Cathodes For Microwave Tubes
Author(s): M. E. Read; A. J. Dudas; P. E. Oettinger
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Paper 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.

Paper Details

Date Published: 18 November 1989
PDF: 2 pages
Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978520
Show Author Affiliations
M. E. Read, Physical Sciences, Incorporated (United States)
A. J. Dudas, Physical Sciences, Incorporated (United States)
P. E. Oettinger, Thermo Electron Technologies Corporation (United States)


Published in SPIE Proceedings Vol. 1039:
13th Intl Conf on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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