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Area of Science:

  • High-energy physics
  • Photonics
  • Materials science

Background:

  • Existing high-energy photon sources have limited flux and intensity above a few hundred keV.
  • Applications in research are widespread but constrained by current source capabilities.

Purpose of the Study:

  • To demonstrate a new method for generating high-energy photons with enhanced flux and intensity.
  • To explore the self-focusing of electron beams and associated photon emission.

Main Methods:

  • Interacting a high-current ultrarelativistic electron beam with multiple submicrometer-thick conducting foils.
  • Analyzing the self-focusing phenomenon and gamma-ray synchrotron photon emission.

Main Results:

  • Achieved strong self-focusing of the electron beam.
  • Observed efficient emission of gamma-ray synchrotron photons.
  • Produced femtosecond collimated electron and photon beams with high number density.

Conclusions:

  • The novel method offers a simpler, more efficient gamma-ray source.
  • Opens opportunities for laserless strong-field quantum electrodynamics (QED) research.
  • Potential applications in fundamental and applied research areas.