High-current solid-feed ion source

Abstract

A duoPIGatron augmented by magnetic cusp confinement has been equipped with a large-volume external oven. The oven has operated at temperatures as high as 1100 °C. Beams of lithium, phosphorus, calcium, and bismuth have been extracted with a multiple-aperture triode column at voltages of up to 40 kV. Mass normalized current densities of as much as 250 mA cm−2 of singly charged ions have been obtained.