title: [Formation of indium-111 in alpha and helium-3 bombardment of natural cadmium (author's transl)].
abstract: Formation cross sections and thick-target yields were studied in detail for alpha reactions and helium-3 reactions of natural cadmium in the energy range 10-40 MeV in order to determine the optimum condition for the production of medical use 11In. The helium-3 reactions were found to give higher 111In yield; namely, at the optimum helium-3 particle energy of 40 MeV and with the cadmium foil of 280 mg/cm2 thickness the amount of 11In produced was 270 muCi/muA . h. A cooling-time of 54 hours was required for the best radiochemical purity. The extraction of HBr-isopropyl ether followed by the anion exchange method was found to be the best chemical method for the carrier-free indium-111 separation.
mesh_terms: D000512:Alpha Particles; D002104:Cadmium / Q000528:radiation effects*; D006371:Helium; D007204:Indium; D007554:Isotopes; D011829:Radiation Dosage; D011868:Radioisotopes
chemical_list: D007554:Isotopes; D011868:Radioisotopes; D002104:Cadmium; D007204:Indium; D006371:Helium