ISOL beams of neutron-rich oxygen isotopes

ISOL beams of 19-22O were produced at ISOLDE and GANIL. At ISOLDE the neutron-rich oxygen isotopes are produced by 1.4 GeV proton-induced reactions in a UCx/graphite target. The target is connected via a water-cooled transfer line (to retain all non-volatile isobars) to an ISOLDE type FEBIAD ion source where the released CO is dominantly ionized as CO+. 19-22O beams were also produced at SPIRAL (GANIL). A 77.5 MeV/nucleon 36S beam was fragmented in a thick graphite target, coupled by a cold transfer tube to an ECR ion source which ionizes the released CO dominantly as O+ and CO+.