Laser-wakefield acceleration of electron beams in a low density plasma channel

T. P. A. Ibbotson, N. Bourgeois, T. P. Rowlands-Rees, L. S. Caballero, S. I. Bajlekov, P. A. Walker, S. Kneip, S. P. D. Mangles, S. R. Nagel, C. A. J. Palmer, N. Delerue, G. Doucas, D. Urner, O. Chekhlov, R. J. Clarke, E. Divall, K. Ertel, P. S. Foster, S. J. Hawkes, C. J. HookerB. Parry, P. P. Rajeev, M. J.V. Streeter, S. M. Hooker

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47 Citations (Scopus)
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Abstract

The generation of quasimonoenergetic electron beams, with energies greater than 500 MeV, in a laser-plasma accelerator driven by 2.5 J, 80 fs laser pulses guided in a low density plasma channel, is investigated. The laser energy required to achieve electron injection is found to depend strongly on the quality of the input laser focal spot. Simulations show that, although the matched spot size of the plasma channel is greater than the self-focused spot size, the channel assists relativistic self-focusing and enables electron injection to occur at lower plasma densities and laser powers than would be possible without a waveguide.

Original languageEnglish
Article number031301
Number of pages4
JournalPhysical Review Special Topics - Accelerators and Beams
Volume13
Issue number3
DOIs
Publication statusPublished - 17 Mar 2010
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

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