Generation of a wakefield undulator in plasma with transverse density gradient

  title={Generation of a wakefield undulator in plasma with transverse density gradient},
  author={Gennady Stupakov},
  journal={Physics of Plasmas},
  • G. Stupakov
  • Published 3 April 2017
  • Physics
  • Physics of Plasmas
We show that a short relativistic electron beam propagating in a plasma with a density gradient perpendicular to the direction of motion generates a wakefield in which a witness bunch experiences a transverse force. A density gradient oscillating along the beam path would create a periodically varying force—an undulator, with an estimated strength of the equivalent magnetic field more than 10 T. This opens an avenue for the creation of a high-strength, short-period undulator, which eventually… 

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