Laser wakefield accelerated electron beams and betatron radiation from multijet gas targets

Research output: Contribution to journalArticle


Laser Plasma Wakefield Accelerated (LWFA) electron beams and efficiency of betatron X-ray sources is studied using laser micromachined supersonic gas jet nozzle arrays. Separate sections of the target are used for the injection, acceleration and enhancement of electron oscillation. In this report, we present the results of LWFA and X-ray generation using dynamic gas density grid built by shock-waves of colliding jets. The experiment was done with the 40 TW, 35 fs laser at the Lund Laser Centre. Electron energies of 30–150 MeV and 1.0 × 108–5.5 × 108 photons per shot of betatron radiation have been measured. The implementation of the betatron source with separate regions of LWFA and plasma density grid raised the efficiency of X-ray generation and increased the number of photons per shot by a factor of 2–3 relative to a single-jet gas target source.


  • Vidmantas Tomkus
  • Valdas Girdauskas
  • Juozas Dudutis
  • Paulius Gečys
  • Valdemar Stankevič
  • Gediminas Račiukaitis
  • Isabel Gallardo González
  • Diego Guénot
  • Jonas Björklund Svensson
  • Anders Persson
  • Olle Lundh
External organisations
  • Center for Physical Sciences and Technology, Lithuania
  • Vytautas Magnus University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Article number16807
JournalScientific Reports
Issue number1
Publication statusPublished - 2020 Dec 1
Publication categoryResearch