Preparation of Ge-68/Ga-68 generator with a binary Ga/Ag electrodepositions as solid target

A novel type of a binary Ga/Ag alloy electrodeposited on silver substrate a s a solid target was developed. It was successfully used for the preparatio n of Ge-68/Ga-68 generator. The deposition was carried out in an alkali sol ution containing gallium, silver and certain electrolytes at controlled cur rent and ambient temperature so that the quality of the deposits was proved to be suited for target irradiation. The yield of Ge-68 with proton bombar dment on this deposits via the Ga-69(p,2n) reaction was assessed. The chemi cal process for providing millicuries Ge-68/Ga-68 generator using a generic tin dioxide as an adsorbent was also established. It was revealed from lon g-term elution tests that approximately 60-70% of Ga-68 could be eluted fro m the generator column with 4 mi of 1.0M HCl per elution, and high radio- a nd chemical purities of the eluates were quite satisfactory for application purposes.