Apparatus for production of lead-212 isotope

A method for production of radioisotopes comprising:

• directing at least one of Th-228 or Ra-224 in a solvent into an emanation box, wherein the emanation box comprises:
• an emanation source comprising fins,
• wherein the fins are made of a non-reactive porous material,
• wherein the least one of Th-228 or Ra-224 is adsorbed onto the fins of the emanation source;
• a shield structure positioned around the emanation source,
• wherein the shield structure is operable to absorb radiation generated by radioactive decay of at least one of the Th-228 or the Ra-224 in the emanation box;
• a carrier gas feed port,
• wherein the carrier gas feed port is operable to provide an inlet for a carrier gas directed into the emanation box;
• a carrier gas exit port,
• wherein the carrier gas exit port is operable to provide an exit for the carrier gas from the emanation box;
• an evaporation exit port,
• wherein the evaporation exit port is operable to provide an exit for evaporated solvent;
• and a heat source, wherein the heat source is operable to provide heat to the emanation box to evaporate the solvent.