Present status of the Stockholm electron beam ion source and its scientific program

The Stockholm electron beam ion source CRYSIS has since 1987 been used for the production of ions with charges in the region 1+ to 60+ for various experiments at low energies as well as for experiments in the storage ring CRYRING. A short summary of these experiments is given. The highly charged ions are produced by electron bombardment of species, either by directly introducing a monoisotopic or almost monoisotopic gas or singly charged isotope separated ions into CRYSIS. The singly charged ions are produced in a plasma ion source, CHORDIS, that can operate with gases, solid material evaporated in an oven or used in a sputtering mode. In this way highly charged ions of practically any element can be produced, even isotopes with a low abundance. The mass selection is done with a 0.5 meter radius doubly focusing magnet that ensures isotopically pure beams even for the heaviest elements. A summary is given of the elements and charge states so far delivered to users