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Enhancement of x-rays generated by a guided laser wakefield accelerator inside capillary tubes

Författare:
Publiceringsår: 2012
Språk: Engelska
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 100
Nummer: 19
Dokumenttyp: Artikel i tidskrift
Förlag: American Institute of Physics

Sammanfattning

Abstract in Undetermined

Electrons accelerated in the nonlinear regime in a laser wakefield accelerator experience transverse oscillations inside the plasma cavity, giving rise to ultra-short pulsed x-rays, also called the betatron radiation. We show that the fluence of x-ray can be enhanced by more than one order of magnitude when the laser is guided by a 10 mm long capillary tube instead of interacting with a 2 mm gas jet. X-rays with a synchrotron-like spectrum and associated critical energy ∼ 5 keV, with a peak brightness of ∼ 1×1021 ph/s/mm2/mrad2/0.1%BW, were achieved by employing 16 TW laser pulses.

Nyckelord

  • Atom and Molecular Physics and Optics

Övriga

Published
  • ISSN: 0003-6951

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