Physics – Plasma Physics
Scientific paper
Nov 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aps..dppup6045h&link_type=abstract
American Physical Society, 50th Annual Meeting of the Division of Plasma Physics, November 17-21, 2008, abstract #UP6.045
Physics
Plasma Physics
Scientific paper
Recent theory suggest that the radiation signature of gamma ray burst afterglow may be the result of the interaction of ultrarelativistic electrons, ejected from supernova shocks, with small-scale magnetic fields. These tiny ``tangled'' magnetic fields are thought to be created by the two-stream filamentation instability, or Weibel Instability, of the beaming electrons. Using the Hercules laser facility at the University of Michigan, we are conducting an experiment to create an electron beam by the laser wakefield technique, produce such filaments by passing the electron beam through another plasma, and image the resulting structure. This experiment provides one of the first direct observations of Weibel filamentation in a relativistic electron beam.
Bingham Richard
Drake Paul R.
Huntington C. M.
Katsouleas Tom
Krushelnick Karl
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