A facility for the production of iodine-123 by spallation of caesium

A facility for the continuous production of iodine-123 by spallation of elemental caesium by 482 MeV protons has been in operation at a TRIUMF beam dump for about 2 years. Radioxenon from the target is efficiently trapped on alumina which is subsequently used to remove the121Te decay product. The yield is 100 mCi/h from a 20 gm/cm2 target at 10 μA. Impurities are125I