Production of metal ion beams from ECR ion source by using oven method

Nakanoya, Takamitsu  ; Matsuda, Makoto  

An ECR ion source has been installed for producing highly charged ion beams of gaseous elements, in the 20 MV high-voltage terminal of the JAEA-Tokai tandem accelerator. The ECR ion source can easily produce intense ion beams for gaseous elements, but not for metal-ion beams. We have developed an oven method in order to produce intense metal-ion beams from the ECR ion source. We have carried out the production test for various metals on a testing stand of the ECR ion source. We have investigated operational parameters for producing 16 different metal-ion beams. In this article, we describe the oven developed in this work, and summarized experimental data of the ionization properties and mass spectrum for each metal element.