Repetitive pulse operation of reltron tubes

Robert B. Miller

doi:10.1117/12.284004

3 October 1997 Repetitive pulse operation of reltron tubes

Robert B. Miller

Proceedings Volume 3158, Intense Microwave Pulses V; (1997) https://doi.org/10.1117/12.284004
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We present data related to the repetitive pulse performance of Reltron HPM tubes. While the tubes using thermionic cathodes are usually limited only by the power supply and/or cooling system, the repetition rate for the high-peak-power tubes (which use explosive emission cathodes) is limited by the rise in the vacuum pressure. In particular, if the tube pressure significantly exceeds 10^-4 torr, the tube fails to operate properly, and the voltage pulses are significantly degraded. We have developed a simple model to describe the phenomenology. We have also begun to explore alternate cathode materials which evolve less gas than velvet. A CsI-coated graphite-fiber cathode appears most promising at present.

Citation Download Citation

Robert B. Miller "Repetitive pulse operation of reltron tubes", Proc. SPIE 3158, Intense Microwave Pulses V, (3 October 1997); https://doi.org/10.1117/12.284004

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