Performance of an inverted sputter source

Abstract

An inverted sputter source manufactured locally was installed on the Demokritos Tandem for heavy ion production. The source is utilizing as an extracted beam the negative ions that are found to be back streaming towards the ionizer in a regular sputter source. The source produces in sufficient quantities a number of ion species with rather few signs of ionizer erosion. Concerning the quality of the beam, direct comparison of the transmission through the accelerator of an oxygen beam produced by the sputter source and a diode source indicates the same percentage of transmission