Radium separation from thorium and manufacturing of targets by precipitation method

We have proposed to produce a ²²⁹Th/²²⁵Ac generator by neutron irradiation of the ²²⁸Ra target, which is a decay product from ²³²Th. The solutions containing ²³²Th and ²²⁸Ra were obtained through the thermal chemical conversion method to dissolve the ThO₂. Then, the separation of ²²⁸Ra from thorium solutions through co-precipitation with magnesium was studied. It was confirmed that radium is coprecipitated by this method. It was also confirmed that the precipitated magnesium carbonate can be easily converted to magnesium oxide. The decontamination of thorium from precipitated radium was investigated, and it was found that a rough decontamination of thorium was achieved by co-precipitation methods. The decontamination of thorium depends on the chemical conversion conditions and the dissolution methods used.