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I. V. Zotova,N. S. Ginzburg,A. S. Sergeev,M. I. Yalandin,A. G. Reutova,M. R. Ulmaskulov,A. K. Sharypov,S. A. Shunailov 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.61
The first experiments on observation of amplification of ultrashort microwave superradiance (SR) pulses under propagating along quasistationary electron beams were performed. For this purpose experimental set-up based on two high current accelerators RADAN synchronized with accuracy 100-300 ps was build up. The first accelerator was used to drive the 37 GHz generator of superradiance pulses with duration ~300 ps based on relativistic BWO. The second accelerator with current up to 1.2 kA and electron energy ~300 keV drives the amplification section in the form of dielectric loaded waveguide. According to theoretical analysis amplification of electromagnetic pulses (minimum in 4 times on power) was accompanied by significant shortening of SR pulse duration fewer than 100 ps.