MULTIPLE-SCATTERING OF ELECTROMAGNETIC-WAVES BY LARGE-AMPLITUDE DRIFTTURBULENT VORTEX STREETS IN A PLASMA

The scattering of electromagnetic waves from strong drift turbulent vo rtex streets in uniform plasmas has been considered. An integral equat ion describing the scattering is obtained in a Fourier representation. This integral equation is then solved approximately by the Galerkin m ethod using two trial functions. Assuming arbitrary polarization and a plane wave for the incident electromagnetic held, a compact expressio n for the scattering cross-section is given. Specific results are deri ved for the differential cross-section for the case in which the incid ent wave propagates as an ordinary mode. It is shown that the the scat tering cross-section thus obtained, which contains contributions from all orders in the scattering strength, is no more difficult to evaluat e than the cross-section calculated to second order Born by the iterat ive technique. Keeping both trial functions and allowing the scatterin g strength tend to zero reduces in fact to the second Born solution, w hile keeping only one of the trial functions reduces to the usual firs t Born result in the same limit.