Observations of the filamentation of high-intensity laser-produced electron beams

M. S. Wei, F. N. Beg, E. L. Clark, A. E. Dangor, R. G. Evans, A. Gopal, K. W.D. Ledingham, P. McKenna, P. A. Norreys, M. Tatarakis, M. Zepf, K. Krushelnick

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Abstract

The structure of the hot electron beams emitted in laser-solid target interactions was analyzed. It was observed that electron beams were emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser. It was shown that the most important condition in which electron beam filamentation due to Weibel-like instabilities become a factor were situations where large regions of low-density plasma exist. The results suggest that Weibel-like instabilities might not be important for the fast-ignitor scheme.

Original languageEnglish
Article number056412
Number of pages6
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume70
Issue number5
DOIs
Publication statusPublished - 1 Nov 2004

Keywords

  • filamented electron beams
  • laser-generated beam
  • high-intensity laser

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