Model for Conversion of Intense-Electron-Beam Energy into Radially Converging Ion Fluxes

Abstract

The pinch phenomenon in relativistic diodes is used with proper design of the anode surface to construct a theoretical scheme for ion acceleration. We analyze the early-time formation of the ion source, and give the approximate solutions for the steady state of ion and electron flow. Efficient conversion (>50%) of electron current into ion current is predicted. The energetic ions are accelerated radially inwards in spherical geometry. Application to the generation of intense neutron pulses and pellet compression is discussed.