Gas-chemical approach to Ac/Bi radionuclide generator for medical application.

The article presents a novel gas-chemical approach for Ac/Bi generators, which provides effective separation of Bi from parent Ac. The main problem with the generators of high activity is the radiation stability of sorbents, which is not substantial in this gas-chemical method of separation, where only radiationally stable inorganic materials are used. The approach includes heating at high temperature (about 900-1000 °C) Ac sample deposited on a backing material (Nb, quartz glass, stainless steel) in hydrogen-containing inert gas flow.