title: Generation of electromagnetic fields of extremely high intensity by coherent summation of Cherenkov superradiance pulses.
abstract: We demonstrate both theoretically and experimentally the possibility of correlating the phase of a Cherenkov superradiance (SR) pulse to the sharp edge of a current pulse, when spontaneous emission of the electron bunch edge serves as the seed for SR processes. By division of the driving voltage pulse across several parallel channels equipped with independent cathodes we can synchronize several SR sources to arrange a two-dimensional array. In the experiments carried out, coherent summation of radiation from four independent 8-mm wavelength band SR generators with peak power 600 MW results in the interference maximum of the directional diagram with an intensity that is equivalent to radiation from a single source with a power of 10 GW.
authors.affiliation: Institute of Applied Physics, RAS, 603950 Nizhny Novgorod, Russia.
authors.forename: N S
authors.initials: NS
authors.lastname: Ginzburg
authors.affiliation: Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
authors.forename: A W
authors.initials: AW
authors.lastname: Cross
authors.affiliation: Institute of Applied Physics, RAS, 603950 Nizhny Novgorod, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Golovanov
authors.affiliation: P. N. Lebedev Physical Institute, RAS, 119991 Moscow, Russia.
authors.forename: G A
authors.initials: GA
authors.lastname: Mesyats
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: M S
authors.initials: MS
authors.lastname: Pedos
authors.affiliation: Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
authors.forename: A D R
authors.initials: AD
authors.lastname: Phelps
authors.affiliation: Institute of High-Current Electronics, SB RAS, 634055 Tomsk, Russia.
authors.forename: I V
authors.initials: IV
authors.lastname: Romanchenko
authors.affiliation: Institute of High-Current Electronics, SB RAS, 634055 Tomsk, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Rostov
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: S N
authors.initials: SN
authors.lastname: Rukin
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: K A
authors.initials: KA
authors.lastname: Sharypov
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: V G
authors.initials: VG
authors.lastname: Shpak
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: S A
authors.initials: SA
authors.lastname: Shunailov
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: M R
authors.initials: MR
authors.lastname: Ulmaskulov
authors.affiliation: Institute of Electrophysics, UB RAS, 620016 Ekaterinburg, Russia.
authors.forename: M I
authors.initials: MI
authors.lastname: Yalandin
authors.affiliation: Institute of Applied Physics, RAS, 603950 Nizhny Novgorod, Russia.
authors.forename: I V
authors.initials: IV
authors.lastname: Zotova