Extremely short relativistic-electron-bunch generation in the laser wakefield via novel bunch injection scheme

A.G. Khachatryan, F.A. van Goor, K.J. Boller, A.J.W. Reitsma, D.A. Jaroszynski

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Recently a new electron-bunch injection scheme for the laser wakefield accelerator has been proposed [JETP Lett. 74, 371 (2001); Phys. Rev. E 65, 046504 (2002)]. In this scheme, a low energy electron bunch, sent in a plasma channel just before a high-intensity laser pulse, is trapped in the laser wakefield, considerably compressed and accelerated to an ultrarelativistic energy. In this paper we show the possibility of the generation of an extremely short (on the order of 1   μm long or a few femtoseconds in duration) relativistic-electron-bunch by this mechanism. The initial electron bunch, which can be generated, for example, by a laser-driven photocathode rf gun, should have an energy of a few hundred keVs to a few MeVs, a duration in the picosecond range or less and a relatively low concentration. The trapping conditions and parameters of an accelerated bunch are investigated. The laser pulse dynamics as well as a possible experimental setup for the demonstration of the injection scheme are also considered.
Original languageEnglish
Pages (from-to)121301-1-121301-10
JournalPhysical Review Special Topics: Accelerators and Beams
Volume7
Issue number12
DOIs
Publication statusPublished - Dec 2004

Keywords

  • wake wave breaking
  • plasma accelerator
  • pulses
  • ultrashort
  • beams
  • compression
  • excitation

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