Generation of ultrashort microwave pulses based on cyclotron superradiance

N S Ginzburg, I V Zotova, A S Sergeev, A D R Phelps, A W Cross, V G Shpak, M I Yalandin, V P Tarakanov

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6 Citations (Scopus)

Abstract

We have theoretically and experimentally investigated the superradiance from a bunch of electrons rotating in a homogeneous magnetic field. A RADAN-303B modulator equipped with a subnanosecond pulse slicer has been used to generate high current subnanosecond electron bunches(250 kV, 0.1-1 kA, 0.3-0.5 ns), Transverse momentum was imparted to the electrons by a kicker, It is shown that for the experimental observation of cyclotron superradiance from high current electron bunches the optimum conditions are the conditions of group synchronism, when the translational velocity of the bunch coincides with the group velocity of the radiation propagating in the waveguide. In the 35 GHz range microwave pulses with record short duration, down to 0.4 ns, with a peak power level up to 200 kW, have been obtained.

Original languageEnglish
Pages (from-to)462-469
Number of pages8
JournalIEEE Transactions on Plasma Science
Volume27
Issue number2
DOIs
Publication statusPublished - Apr 1999

Keywords

  • cyclotron emission
  • cyclotron maser
  • free electron devices
  • high power microwaves
  • microwave pulses
  • superradiance
  • free electron laser
  • superradiant
  • cyclotron superradiance
  • millimetre wave devices
  • millimeter wave generation
  • millimeter wave sources
  • electron bunches
  • electron beam
  • Ka-band
  • ultrashort microwave pulses

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