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Generation of 3 GW microwave pulses in X-band from a combination of a relativistic backward-wave oscillator and a helical-waveguide compressor

Bratman, V. L. and Denisov, G. G. and Kolganov, N. G. and Mishakin, S. V. and Samsonov, S. V. and Cross, A. W. and He, W. and Zhang, L. and McStravick, M. and Whyte, C. G. and Young, A. R. and Ronald, K. and Robertson, C. W. and Phelps, A. D. R. (2010) Generation of 3 GW microwave pulses in X-band from a combination of a relativistic backward-wave oscillator and a helical-waveguide compressor. Physics of Plasmas, 17 (11). ISSN 1070-664X

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Abstract

The phenomenon of passive compression of frequency-modulated (FM) pulses in a dispersive media (DM) was used to increase the peak microwave power up to the multigigawatt level A helically corrugated waveguide was used as the DM, while a relativistic X-band backward-wave oscillator (RBWO) with a descending-during-the-pulse accelerating voltage served as a source of FM pulses Compression of pulses down to a halfwidth of 2 2 ns accompanied by a 4 5-fold power increase up to a value of about 3 2 GW has been demonstrated.