Modelling the link between emission current and LMIS cusp length

This paper presents new modelling results on the relationship between emission current and cusp length, for gallium and indium liquid-metal ion sources. The work is based on an improved version of the LMIS modelling program developed by Forbes and Ljepojevic, and achieves enhanced computational speed by means of parallel processing. Good agreement is found between the results derived from numerical simulation and experiment.