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Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront

Författare:
Publiceringsår: 2009
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Applied Physics Letters
Volym: 95
Nummer: 18
Dokumenttyp: Artikel
Förlag: American Institute of Physics
Additional info: Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Sammanfattning

By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.

Disputation

Nyckelord

  • Physics and Astronomy
  • accelerators
  • wakefield
  • plasma X-ray sources
  • betatrons
  • plasma accelerators

Övriga

Published
Yes
  • ISSN: 0003-6951

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