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Proceedings Paper

Experiments with an S-band vircator
Author(s): D. E.T.F. Ashby; J. Allen; K. C. Hawkins
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Paper Abstract

The experiments described used a Vircator operating in the frequency range 2.5 - 3.5 MHz and powered by a 10 ohm, 100 ns pulse generator operating at voltages up to 600 kV. The Vircator had a tunable resonant cavity and power was coupled out from one side. A series of experiments were carried out to elucidate various aspects of the Vircator's behavior. The first experiment conclusively demonstrated reflexing in which electrons from the virtual cathode region re-enter the anode/cathode gap and affect the diode impedance. The second experiment demonstrated the effect of the anode/cathode gap on the behavior of the reflexing electrons. The third experiment showed that the power output depended upon the thickness of the anode foil, and more surprisingly, on the thickness of the foil forming the adjustable rear wall of the cavity.

Paper Details

Date Published: 1 May 1994
PDF: 4 pages
Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); doi: 10.1117/12.174574
Show Author Affiliations
D. E.T.F. Ashby, AEA Technology (United Kingdom)
J. Allen, AEA Technology (United Kingdom)
K. C. Hawkins, AEA Technology (United Kingdom)


Published in SPIE Proceedings Vol. 2259:
XVI International Symposium on Discharges and Electrical Insulation in Vacuum
Gennady A. Mesyats, Editor(s)

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