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Proceedings Paper

Cesium iodide cathodes for high-power microwave devices
Author(s): Ryan J. Umstattd; Donald A. Shiffler; Michael D. Haworth; Kyle J. Hendricks; John W. Luginsland; Thomas A. Spencer
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Paper Abstract

A variety of cesium iodide-coated carbon fiber cathodes have been designed and tested for high voltage (300 - 500 kV), high current operation. Here, we describe the conditioning process and present the most recent experimental data for a thin annular beam test diode. During these reproducible microsecond-duration pulses, this diode exhibits promising beam impedance maintainability and gap closure speeds of less than 0.4 cm/microsecond(s) ec. Also presented are recent results for a carbon fiber cathode tested in a relativistic klystron oscillator and future plans for such a cathode in the magnetically insulated line oscillator.

Paper Details

Date Published: 1 July 1999
PDF: 6 pages
Proc. SPIE 3702, Intense Microwave Pulses VI, (1 July 1999); doi: 10.1117/12.351207
Show Author Affiliations
Ryan J. Umstattd, Air Force Research Lab. (United States)
Donald A. Shiffler, Air Force Research Lab. (United States)
Michael D. Haworth, Air Force Research Lab. (United States)
Kyle J. Hendricks, Air Force Research Lab. (United States)
John W. Luginsland, Air Force Research Lab. (United States)
Thomas A. Spencer, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 3702:
Intense Microwave Pulses VI
Howard E. Brandt, Editor(s)

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