Abstract
rms emittance growth of liquid-metal ion sources is studied. Processes included are nonlinear expansion through extractor and accelerator fringe fields, nonlinear beam space charge, plasma effects near needle, and waves [either ion acoustic or space charge limited as considered by Dudnikov (private communication, 1988)]. This investigation consists of 2-D analysis of appropriate Vlasov–Poisson equations in both steady-state and time-dependent formulations. Various geometries will be considered such as some used by Alton of ORNL.
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