Results on Plasma Focusing of High Energy Density Electron and Positron   Beams
  We present results from the SLAC E-150 experiment on plasma focusing of high energy density electron and, for the first time, positron beams. We also discuss measurements on plasma lens-induced synchrotron radiation, longitudinal dynamics of plasma focusing, and laser- and beam-plasma interactions. 
J.S.T. Ng, P. Chen, W. Craddock, F.J. Decker, R.C. Field, M.J. Hogan,   R. Iverson, F. King, R.E. Kirby, T. Kotseroglou, P. ...