Hausladen, P.Weisser, DavidLobanov, NikolaiFifield, L KeithWallace, Howard2015-12-130168-583Xhttp://hdl.handle.net/1885/72963We report on improvements in the overall intensity of a sputter ion source that evolved originally from an NEC MCSNICS. Beam output increases benefit both AMS measurements and nuclear physics experiments using low natural abundance beams. In particular, minor changes in source geometry suggested by a combination of electrostatic calculations and simple design principles have yielded increases in extracted negative ion intensity of nearly a factor of 4.Keywords: Electrostatics; Ion beams; Ion sources; Negative ions; Positive ions; Sputter ion sources; Nuclear physics200210.1016/S0168-583X(01)01307-62015-12-11