Patent Number: 
Section: claims

1. A target for radionuclide production resulting from exposure to a beam of accelerated particles wherein the target comprises a layer of an intermetallic composition of antimony bonded to a backing block comprising a metal and having cooling passages adapted to circulate a cooling fluid. 2. The target of claim 1 wherein the antimony is enriched with antimony-123. 3. The target of claim 1 wherein the intermetallic composition comprises alloys of antimony and an element selected from the group consisting of titanium, copper, nickel, and aluminum. 4. The target of claim 1 wherein the intermetallic composition comprises antimony and titanium. 5. The target of claim 1 wherein the intermetallic composition is diffusion welded to a backing block. 6. The target of claim 1 wherein the intermetallic composition is encapsulated by a target shell comprising a material substantially resistant to water under a high intensity beam of accelerated particles. 7. A target for radionuclide production resulting from exposure of a beam of accelerated particles wherein the target comprises an intermetallic composition of antimony and an element selected from a group consisting of titanium, copper, nickel and aluminum wherein said antimony is enriched with antimony-123.