Experimental observation of cyclotron superradiance under group synchronism conditions

N S Ginzburg, I V Zotova, A S Sergeev, I V Konoplev, A D R Phelps, A W Cross, S J Cooke, V G Shpak, M I Yalandin, S A Shunailov, M R Ulmaskulov

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92 Citations (Scopus)


Intense microwave pulses (several hundreds of kilowatts) of ultrashort duration (less than 0.5 ns) were obtained from an ensemble of electrons rotating in a uniform magnetic field. The comparison with theoretical simulations proves that this emission can be interpreted as cyclotron superradiance. The maximum radiation power was achieved under group synchronism conditions, when the electron bunch translational velocity coincides with the group velocity of the wave propagating in the waveguide.

Original languageEnglish
Pages (from-to)2365-2368
Number of pages4
JournalPhysical Review Letters
Issue number12
Publication statusPublished - 24 Mar 1997


  • cyclotron maser
  • cyclotron maser instability
  • cyclotron maser process
  • cyclotron maser radiation
  • superradiance
  • superradiant amplification
  • free electron masers
  • cyclotron superradiance


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