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Journal Articles Physical Review Letters Year : 2021

Extremely Dense Gamma-Ray Pulses in Electron Beam-Multifoil Collisions

Archana Sampath
  • Function : Author
Sébastien Corde
Maitreyi Sangal
  • Function : Author
Christoph H. Keitel
  • Function : Author
Robert Ariniello
  • Function : Author
John Cary
  • Function : Author
Henrik Ekerfelt
  • Function : Author
Claudio Emma
  • Function : Author
Frederico Fiuza
  • Function : Author
Hiroki Fujii
  • Function : Author
Mark Hogan
  • Function : Author
Chan Joshi
  • Function : Author
Valentina Lee
  • Function : Author
Mike Litos
  • Function : Author
Kenneth Marsh
  • Function : Author
Zan Nie
  • Function : Author
Brendan O'Shea
  • Function : Author
J. Ryan Peterson
  • Function : Author
Doug Storey
  • Function : Author
Yipeng Wu
  • Function : Author
Xinlu Xu
  • Function : Author
Chaojie Zhang
  • Function : Author
Matteo Tamburini
  • Function : Author

Abstract

Sources of high-energy photons have important applications in almost all areas of research. However, the photon flux and intensity of existing sources is strongly limited for photon energies above a few hundred keV. Here we show that a high-current ultrarelativistic electron beam interacting with multiple submicrometer-thick conducting foils can undergo strong self-focusing accompanied by efficient emission of gamma-ray synchrotron photons. Physically, self-focusing and high-energy photon emission originate from the beam interaction with the near-field transition radiation accompanying the beam-foil collision. This near field radiation is of amplitude comparable with the beam self-field, and can be strong enough that a single emitted photon can carry away a significant fraction of the emitting electron energy. After beam collision with multiple foils, femtosecond collimated electron and photon beams with number density exceeding that of a solid are obtained. The relative simplicity, unique properties, and high efficiency of this gamma-ray source open up new opportunities for both applied and fundamental research including laserless investigations of strong-field QED processes with a single electron beam.

Dates and versions

hal-02946161 , version 1 (22-09-2020)

Identifiers

Cite

Archana Sampath, Xavier Davoine, Sébastien Corde, Laurent Gremillet, Max Gilljohann, et al.. Extremely Dense Gamma-Ray Pulses in Electron Beam-Multifoil Collisions. Physical Review Letters, 2021, 126 (6), pp.064801. ⟨10.1103/PhysRevLett.126.064801⟩. ⟨hal-02946161⟩
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