INSTALLATION WITH AN ELECTRON-CYCLOTRON RESONANCE ION SOURCE FOR DOPING STENTS WITH RADIOACTIVE AND NON-RADIOACTIVE ATOMS

摘要

An installation for doping stents with radio active and non radio active atoms, comprising an ECR ion source with an extraction device, a mass separation device and an irradiation chamber in which the stents are exposed to a selected partial ion beam. Microwaves are injected by means of a tubular piece which is concentric to the plasma chamber and which can be displaced axially. Gaseous additives to the plasma are selected in such a way that a partial beam with a sufficient proportion of radio active atomic or molecular ions can be produced. Stents which are irradiated according to this method in said installation are characterised by a reliably quantified degree of radio activity.