Parametric growth of space charge waves using a self-biased electrostatic wiggler

An investigation is reported on the use of parametric scattering from an electrostatic wiggler for the growth of space charge waves. This investigation extends previous work on slow space charge wave generation and propagation in inhomogeneous waveguides. Observations show that the scattering technique may be used for the growth of large amplitude waves and that this technique permits wave growth at all values of interest for the ratio of beam to limiting current