Two-dimensional dynamics of the plasma wakefield accelerator

摘要: A general analysis of the electromagnetic wakefields for an axisymmetric charge distribution moving through a cold uniform plasma is presented. Particular attention given to and relativistic effects influencing waves. It shown that provides shielding transverse on scale length few skin depths (c/ωp). The implications wakefield accelerators are driving beams with radii will experience severe pinching, whereas larger be subject filamentation instabilities. These conclusions supported by self‐consistent particle‐in‐cell simulations. deleterious severely limit accelerating gradients can obtained even if magnetic field used guide beam.