Electromagnetic acceleration of electrically charged bodies
  Acceleration of electrically charged bodies is carried out by the electric field running via the spiral structure of the electric pulse. The accelerated particles have a cylindrical shape with a diameter of cylinder two millimeters, a length of the conical part thirteen millimeters and the total length three hundred millimeters. Pre-acceleration of the cylinder up to speed one kilometer per second is performed by gas-dynamic. The pulse with the voltage amplitude two megavolts and the power three hundreds megawatts goes into the spiral waveguide synchronously with the rod injected onto it. The rod is accelerated by the traveling pulse in the longitudinal direction up to the finite velocity six kilometers per second for length three hundreds meters. 
S. N. Dolya
physics.acc-ph