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Phys Rev Lett. 2004 Mar 19;92(11):118301. Epub 2004 Mar 18.

Compression of frequency-modulated pulses using helically corrugated waveguides and its potential for generating multigigawatt rf radiation.

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1
Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, 603950, Russia.

Abstract

A new method to generate ultrahigh-power microwave pulses compatible with mildly relativistic electron sources is proposed. This method involves a novel microwave compressor in the form of a metal helically corrugated waveguide, which can enhance the power of frequency-modulated nanosecond pulses up to the multigigawatt level. The results of the proof-of-principle experiments at kilowatt power levels are in good agreement with theory.

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